1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Self tests for device tree subsystem 4 */ 5 6 #define pr_fmt(fmt) "### dt-test ### " fmt 7 8 #include <linux/memblock.h> 9 #include <linux/clk.h> 10 #include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */ 11 #include <linux/err.h> 12 #include <linux/errno.h> 13 #include <linux/hashtable.h> 14 #include <linux/libfdt.h> 15 #include <linux/of.h> 16 #include <linux/of_address.h> 17 #include <linux/of_fdt.h> 18 #include <linux/of_irq.h> 19 #include <linux/of_platform.h> 20 #include <linux/list.h> 21 #include <linux/mutex.h> 22 #include <linux/slab.h> 23 #include <linux/device.h> 24 #include <linux/platform_device.h> 25 #include <linux/pci.h> 26 #include <linux/kernel.h> 27 28 #include <linux/i2c.h> 29 #include <linux/i2c-mux.h> 30 #include <linux/gpio/driver.h> 31 32 #include <linux/bitops.h> 33 34 #include "of_private.h" 35 36 static struct unittest_results { 37 int passed; 38 int failed; 39 } unittest_results; 40 41 #define unittest(result, fmt, ...) ({ \ 42 bool failed = !(result); \ 43 if (failed) { \ 44 unittest_results.failed++; \ 45 pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 46 } else { \ 47 unittest_results.passed++; \ 48 pr_info("pass %s():%i\n", __func__, __LINE__); \ 49 } \ 50 failed; \ 51 }) 52 53 #ifdef CONFIG_OF_KOBJ 54 #define OF_KREF_READ(NODE) kref_read(&(NODE)->kobj.kref) 55 #else 56 #define OF_KREF_READ(NODE) 1 57 #endif 58 59 /* 60 * Expected message may have a message level other than KERN_INFO. 61 * Print the expected message only if the current loglevel will allow 62 * the actual message to print. 63 * 64 * Do not use EXPECT_BEGIN(), EXPECT_END(), EXPECT_NOT_BEGIN(), or 65 * EXPECT_NOT_END() to report messages expected to be reported or not 66 * reported by pr_debug(). 67 */ 68 #define EXPECT_BEGIN(level, fmt, ...) \ 69 printk(level pr_fmt("EXPECT \\ : ") fmt, ##__VA_ARGS__) 70 71 #define EXPECT_END(level, fmt, ...) \ 72 printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__) 73 74 #define EXPECT_NOT_BEGIN(level, fmt, ...) \ 75 printk(level pr_fmt("EXPECT_NOT \\ : ") fmt, ##__VA_ARGS__) 76 77 #define EXPECT_NOT_END(level, fmt, ...) \ 78 printk(level pr_fmt("EXPECT_NOT / : ") fmt, ##__VA_ARGS__) 79 80 static void __init of_unittest_find_node_by_name(void) 81 { 82 struct device_node *np; 83 const char *options, *name; 84 85 np = of_find_node_by_path("/testcase-data"); 86 name = kasprintf(GFP_KERNEL, "%pOF", np); 87 unittest(np && name && !strcmp("/testcase-data", name), 88 "find /testcase-data failed\n"); 89 of_node_put(np); 90 kfree(name); 91 92 /* Test if trailing '/' works */ 93 np = of_find_node_by_path("/testcase-data/"); 94 unittest(!np, "trailing '/' on /testcase-data/ should fail\n"); 95 96 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 97 name = kasprintf(GFP_KERNEL, "%pOF", np); 98 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 99 "find /testcase-data/phandle-tests/consumer-a failed\n"); 100 of_node_put(np); 101 kfree(name); 102 103 np = of_find_node_by_path("testcase-alias"); 104 name = kasprintf(GFP_KERNEL, "%pOF", np); 105 unittest(np && name && !strcmp("/testcase-data", name), 106 "find testcase-alias failed\n"); 107 of_node_put(np); 108 kfree(name); 109 110 /* Test if trailing '/' works on aliases */ 111 np = of_find_node_by_path("testcase-alias/"); 112 unittest(!np, "trailing '/' on testcase-alias/ should fail\n"); 113 114 np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a"); 115 name = kasprintf(GFP_KERNEL, "%pOF", np); 116 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name), 117 "find testcase-alias/phandle-tests/consumer-a failed\n"); 118 of_node_put(np); 119 kfree(name); 120 121 np = of_find_node_by_path("/testcase-data/missing-path"); 122 unittest(!np, "non-existent path returned node %pOF\n", np); 123 of_node_put(np); 124 125 np = of_find_node_by_path("missing-alias"); 126 unittest(!np, "non-existent alias returned node %pOF\n", np); 127 of_node_put(np); 128 129 np = of_find_node_by_path("testcase-alias/missing-path"); 130 unittest(!np, "non-existent alias with relative path returned node %pOF\n", np); 131 of_node_put(np); 132 133 np = of_find_node_opts_by_path("/testcase-data:testoption", &options); 134 unittest(np && !strcmp("testoption", options), 135 "option path test failed\n"); 136 of_node_put(np); 137 138 np = of_find_node_opts_by_path("/testcase-data:test/option", &options); 139 unittest(np && !strcmp("test/option", options), 140 "option path test, subcase #1 failed\n"); 141 of_node_put(np); 142 143 np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option", &options); 144 unittest(np && !strcmp("test/option", options), 145 "option path test, subcase #2 failed\n"); 146 of_node_put(np); 147 148 np = of_find_node_opts_by_path("/testcase-data:testoption", NULL); 149 unittest(np, "NULL option path test failed\n"); 150 of_node_put(np); 151 152 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", 153 &options); 154 unittest(np && !strcmp("testaliasoption", options), 155 "option alias path test failed\n"); 156 of_node_put(np); 157 158 np = of_find_node_opts_by_path("testcase-alias:test/alias/option", 159 &options); 160 unittest(np && !strcmp("test/alias/option", options), 161 "option alias path test, subcase #1 failed\n"); 162 of_node_put(np); 163 164 np = of_find_node_opts_by_path("testcase-alias/phandle-tests/consumer-a:testaliasoption", 165 &options); 166 name = kasprintf(GFP_KERNEL, "%pOF", np); 167 unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name) && 168 !strcmp("testaliasoption", options), 169 "option alias path test, subcase #2 failed\n"); 170 of_node_put(np); 171 kfree(name); 172 173 np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL); 174 unittest(np, "NULL option alias path test failed\n"); 175 of_node_put(np); 176 177 options = "testoption"; 178 np = of_find_node_opts_by_path("testcase-alias", &options); 179 unittest(np && !options, "option clearing test failed\n"); 180 of_node_put(np); 181 182 options = "testoption"; 183 np = of_find_node_opts_by_path("/", &options); 184 unittest(np && !options, "option clearing root node test failed\n"); 185 of_node_put(np); 186 } 187 188 static void __init of_unittest_dynamic(void) 189 { 190 struct device_node *np; 191 struct property *prop; 192 193 np = of_find_node_by_path("/testcase-data"); 194 if (!np) { 195 pr_err("missing testcase data\n"); 196 return; 197 } 198 199 /* Array of 4 properties for the purpose of testing */ 200 prop = kcalloc(4, sizeof(*prop), GFP_KERNEL); 201 if (!prop) { 202 unittest(0, "kzalloc() failed\n"); 203 return; 204 } 205 206 /* Add a new property - should pass*/ 207 prop->name = "new-property"; 208 prop->value = "new-property-data"; 209 prop->length = strlen(prop->value) + 1; 210 unittest(of_add_property(np, prop) == 0, "Adding a new property failed\n"); 211 212 /* Try to add an existing property - should fail */ 213 prop++; 214 prop->name = "new-property"; 215 prop->value = "new-property-data-should-fail"; 216 prop->length = strlen(prop->value) + 1; 217 unittest(of_add_property(np, prop) != 0, 218 "Adding an existing property should have failed\n"); 219 220 /* Try to modify an existing property - should pass */ 221 prop->value = "modify-property-data-should-pass"; 222 prop->length = strlen(prop->value) + 1; 223 unittest(of_update_property(np, prop) == 0, 224 "Updating an existing property should have passed\n"); 225 226 /* Try to modify non-existent property - should pass*/ 227 prop++; 228 prop->name = "modify-property"; 229 prop->value = "modify-missing-property-data-should-pass"; 230 prop->length = strlen(prop->value) + 1; 231 unittest(of_update_property(np, prop) == 0, 232 "Updating a missing property should have passed\n"); 233 234 /* Remove property - should pass */ 235 unittest(of_remove_property(np, prop) == 0, 236 "Removing a property should have passed\n"); 237 238 /* Adding very large property - should pass */ 239 prop++; 240 prop->name = "large-property-PAGE_SIZEx8"; 241 prop->length = PAGE_SIZE * 8; 242 prop->value = kzalloc(prop->length, GFP_KERNEL); 243 unittest(prop->value != NULL, "Unable to allocate large buffer\n"); 244 if (prop->value) 245 unittest(of_add_property(np, prop) == 0, 246 "Adding a large property should have passed\n"); 247 } 248 249 static int __init of_unittest_check_node_linkage(struct device_node *np) 250 { 251 int count = 0, rc; 252 253 for_each_child_of_node_scoped(np, child) { 254 if (child->parent != np) { 255 pr_err("Child node %pOFn links to wrong parent %pOFn\n", 256 child, np); 257 return -EINVAL; 258 } 259 260 rc = of_unittest_check_node_linkage(child); 261 if (rc < 0) 262 return rc; 263 count += rc; 264 } 265 266 return count + 1; 267 } 268 269 static void __init of_unittest_check_tree_linkage(void) 270 { 271 struct device_node *np; 272 int allnode_count = 0, child_count; 273 274 if (!of_root) 275 return; 276 277 for_each_of_allnodes(np) 278 allnode_count++; 279 child_count = of_unittest_check_node_linkage(of_root); 280 281 unittest(child_count > 0, "Device node data structure is corrupted\n"); 282 unittest(child_count == allnode_count, 283 "allnodes list size (%i) doesn't match sibling lists size (%i)\n", 284 allnode_count, child_count); 285 pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count); 286 } 287 288 static void __init of_unittest_printf_one(struct device_node *np, const char *fmt, 289 const char *expected) 290 { 291 unsigned char *buf; 292 int buf_size; 293 int size, i; 294 295 buf_size = strlen(expected) + 10; 296 buf = kmalloc(buf_size, GFP_KERNEL); 297 if (!buf) 298 return; 299 300 /* Baseline; check conversion with a large size limit */ 301 memset(buf, 0xff, buf_size); 302 size = snprintf(buf, buf_size - 2, fmt, np); 303 304 /* use strcmp() instead of strncmp() here to be absolutely sure strings match */ 305 unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff), 306 "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n", 307 fmt, expected, buf); 308 309 /* Make sure length limits work */ 310 size++; 311 for (i = 0; i < 2; i++, size--) { 312 /* Clear the buffer, and make sure it works correctly still */ 313 memset(buf, 0xff, buf_size); 314 snprintf(buf, size+1, fmt, np); 315 unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff), 316 "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n", 317 size, fmt, expected, buf); 318 } 319 kfree(buf); 320 } 321 322 static void __init of_unittest_printf(void) 323 { 324 struct device_node *np; 325 const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100"; 326 char phandle_str[16] = ""; 327 328 np = of_find_node_by_path(full_name); 329 if (!np) { 330 unittest(np, "testcase data missing\n"); 331 return; 332 } 333 334 num_to_str(phandle_str, sizeof(phandle_str), np->phandle, 0); 335 336 of_unittest_printf_one(np, "%pOF", full_name); 337 of_unittest_printf_one(np, "%pOFf", full_name); 338 of_unittest_printf_one(np, "%pOFn", "dev"); 339 of_unittest_printf_one(np, "%2pOFn", "dev"); 340 of_unittest_printf_one(np, "%5pOFn", " dev"); 341 of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device"); 342 of_unittest_printf_one(np, "%pOFp", phandle_str); 343 of_unittest_printf_one(np, "%pOFP", "dev@100"); 344 of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC"); 345 of_unittest_printf_one(np, "%10pOFP", " dev@100"); 346 of_unittest_printf_one(np, "%-10pOFP", "dev@100 "); 347 of_unittest_printf_one(of_root, "%pOFP", "/"); 348 of_unittest_printf_one(np, "%pOFF", "----"); 349 of_unittest_printf_one(np, "%pOFPF", "dev@100:----"); 350 of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device"); 351 of_unittest_printf_one(np, "%pOFc", "test-sub-device"); 352 of_unittest_printf_one(np, "%pOFC", 353 "\"test-sub-device\",\"test-compat2\",\"test-compat3\""); 354 } 355 356 struct node_hash { 357 struct hlist_node node; 358 struct device_node *np; 359 }; 360 361 static DEFINE_HASHTABLE(phandle_ht, 8); 362 static void __init of_unittest_check_phandles(void) 363 { 364 struct device_node *np; 365 struct node_hash *nh; 366 struct hlist_node *tmp; 367 int i, dup_count = 0, phandle_count = 0; 368 369 for_each_of_allnodes(np) { 370 if (!np->phandle) 371 continue; 372 373 hash_for_each_possible(phandle_ht, nh, node, np->phandle) { 374 if (nh->np->phandle == np->phandle) { 375 pr_info("Duplicate phandle! %i used by %pOF and %pOF\n", 376 np->phandle, nh->np, np); 377 dup_count++; 378 break; 379 } 380 } 381 382 nh = kzalloc(sizeof(*nh), GFP_KERNEL); 383 if (!nh) 384 return; 385 386 nh->np = np; 387 hash_add(phandle_ht, &nh->node, np->phandle); 388 phandle_count++; 389 } 390 unittest(dup_count == 0, "Found %i duplicates in %i phandles\n", 391 dup_count, phandle_count); 392 393 /* Clean up */ 394 hash_for_each_safe(phandle_ht, i, tmp, nh, node) { 395 hash_del(&nh->node); 396 kfree(nh); 397 } 398 } 399 400 static void __init of_unittest_parse_phandle_with_args(void) 401 { 402 struct device_node *np; 403 struct of_phandle_args args; 404 int i, rc; 405 406 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 407 if (!np) { 408 pr_err("missing testcase data\n"); 409 return; 410 } 411 412 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 413 unittest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc); 414 415 for (i = 0; i < 8; i++) { 416 bool passed = true; 417 418 memset(&args, 0, sizeof(args)); 419 rc = of_parse_phandle_with_args(np, "phandle-list", 420 "#phandle-cells", i, &args); 421 422 /* Test the values from tests-phandle.dtsi */ 423 switch (i) { 424 case 0: 425 passed &= !rc; 426 passed &= (args.args_count == 1); 427 passed &= (args.args[0] == (i + 1)); 428 break; 429 case 1: 430 passed &= !rc; 431 passed &= (args.args_count == 2); 432 passed &= (args.args[0] == (i + 1)); 433 passed &= (args.args[1] == 0); 434 break; 435 case 2: 436 passed &= (rc == -ENOENT); 437 break; 438 case 3: 439 passed &= !rc; 440 passed &= (args.args_count == 3); 441 passed &= (args.args[0] == (i + 1)); 442 passed &= (args.args[1] == 4); 443 passed &= (args.args[2] == 3); 444 break; 445 case 4: 446 passed &= !rc; 447 passed &= (args.args_count == 2); 448 passed &= (args.args[0] == (i + 1)); 449 passed &= (args.args[1] == 100); 450 break; 451 case 5: 452 passed &= !rc; 453 passed &= (args.args_count == 0); 454 break; 455 case 6: 456 passed &= !rc; 457 passed &= (args.args_count == 1); 458 passed &= (args.args[0] == (i + 1)); 459 break; 460 case 7: 461 passed &= (rc == -ENOENT); 462 break; 463 default: 464 passed = false; 465 } 466 467 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 468 i, args.np, rc); 469 470 if (rc == 0) 471 of_node_put(args.np); 472 } 473 474 /* Check for missing list property */ 475 memset(&args, 0, sizeof(args)); 476 rc = of_parse_phandle_with_args(np, "phandle-list-missing", 477 "#phandle-cells", 0, &args); 478 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 479 rc = of_count_phandle_with_args(np, "phandle-list-missing", 480 "#phandle-cells"); 481 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 482 483 /* Check for missing cells property */ 484 memset(&args, 0, sizeof(args)); 485 486 EXPECT_BEGIN(KERN_INFO, 487 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 488 489 rc = of_parse_phandle_with_args(np, "phandle-list", 490 "#phandle-cells-missing", 0, &args); 491 492 EXPECT_END(KERN_INFO, 493 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 494 495 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 496 497 EXPECT_BEGIN(KERN_INFO, 498 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 499 500 rc = of_count_phandle_with_args(np, "phandle-list", 501 "#phandle-cells-missing"); 502 503 EXPECT_END(KERN_INFO, 504 "OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1"); 505 506 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 507 508 /* Check for bad phandle in list */ 509 memset(&args, 0, sizeof(args)); 510 511 EXPECT_BEGIN(KERN_INFO, 512 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 513 514 rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", 515 "#phandle-cells", 0, &args); 516 517 EXPECT_END(KERN_INFO, 518 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 519 520 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 521 522 EXPECT_BEGIN(KERN_INFO, 523 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 524 525 rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle", 526 "#phandle-cells"); 527 528 EXPECT_END(KERN_INFO, 529 "OF: /testcase-data/phandle-tests/consumer-a: could not find phandle"); 530 531 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 532 533 /* Check for incorrectly formed argument list */ 534 memset(&args, 0, sizeof(args)); 535 536 EXPECT_BEGIN(KERN_INFO, 537 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1"); 538 539 rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", 540 "#phandle-cells", 1, &args); 541 542 EXPECT_END(KERN_INFO, 543 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1"); 544 545 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 546 547 EXPECT_BEGIN(KERN_INFO, 548 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1"); 549 550 rc = of_count_phandle_with_args(np, "phandle-list-bad-args", 551 "#phandle-cells"); 552 553 EXPECT_END(KERN_INFO, 554 "OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1"); 555 556 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 557 } 558 559 static void __init of_unittest_parse_phandle_with_args_map(void) 560 { 561 struct device_node *np, *p[6] = {}; 562 struct of_phandle_args args; 563 unsigned int prefs[6]; 564 int i, rc; 565 566 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b"); 567 if (!np) { 568 pr_err("missing testcase data\n"); 569 return; 570 } 571 572 p[0] = of_find_node_by_path("/testcase-data/phandle-tests/provider0"); 573 p[1] = of_find_node_by_path("/testcase-data/phandle-tests/provider1"); 574 p[2] = of_find_node_by_path("/testcase-data/phandle-tests/provider2"); 575 p[3] = of_find_node_by_path("/testcase-data/phandle-tests/provider3"); 576 p[4] = of_find_node_by_path("/testcase-data/phandle-tests/provider4"); 577 p[5] = of_find_node_by_path("/testcase-data/phandle-tests/provider5"); 578 for (i = 0; i < ARRAY_SIZE(p); ++i) { 579 if (!p[i]) { 580 pr_err("missing testcase data\n"); 581 return; 582 } 583 prefs[i] = OF_KREF_READ(p[i]); 584 } 585 586 rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells"); 587 unittest(rc == 8, "of_count_phandle_with_args() returned %i, expected 8\n", rc); 588 589 for (i = 0; i < 9; i++) { 590 bool passed = true; 591 592 memset(&args, 0, sizeof(args)); 593 rc = of_parse_phandle_with_args_map(np, "phandle-list", 594 "phandle", i, &args); 595 596 /* Test the values from tests-phandle.dtsi */ 597 switch (i) { 598 case 0: 599 passed &= !rc; 600 passed &= (args.np == p[1]); 601 passed &= (args.args_count == 1); 602 passed &= (args.args[0] == 1); 603 break; 604 case 1: 605 passed &= !rc; 606 passed &= (args.np == p[3]); 607 passed &= (args.args_count == 3); 608 passed &= (args.args[0] == 2); 609 passed &= (args.args[1] == 5); 610 passed &= (args.args[2] == 3); 611 break; 612 case 2: 613 passed &= (rc == -ENOENT); 614 break; 615 case 3: 616 passed &= !rc; 617 passed &= (args.np == p[0]); 618 passed &= (args.args_count == 0); 619 break; 620 case 4: 621 passed &= !rc; 622 passed &= (args.np == p[1]); 623 passed &= (args.args_count == 1); 624 passed &= (args.args[0] == 3); 625 break; 626 case 5: 627 passed &= !rc; 628 passed &= (args.np == p[0]); 629 passed &= (args.args_count == 0); 630 break; 631 case 6: 632 passed &= !rc; 633 passed &= (args.np == p[2]); 634 passed &= (args.args_count == 2); 635 passed &= (args.args[0] == 15); 636 passed &= (args.args[1] == 0x20); 637 break; 638 case 7: 639 passed &= !rc; 640 passed &= (args.np == p[3]); 641 passed &= (args.args_count == 3); 642 passed &= (args.args[0] == 2); 643 passed &= (args.args[1] == 5); 644 passed &= (args.args[2] == 3); 645 break; 646 case 8: 647 passed &= (rc == -ENOENT); 648 break; 649 default: 650 passed = false; 651 } 652 653 unittest(passed, "index %i - data error on node %s rc=%i\n", 654 i, args.np->full_name, rc); 655 656 if (rc == 0) 657 of_node_put(args.np); 658 } 659 660 /* Check for missing list property */ 661 memset(&args, 0, sizeof(args)); 662 rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", 663 "phandle", 0, &args); 664 unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); 665 666 /* Check for missing cells,map,mask property */ 667 memset(&args, 0, sizeof(args)); 668 669 EXPECT_BEGIN(KERN_INFO, 670 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 671 672 rc = of_parse_phandle_with_args_map(np, "phandle-list", 673 "phandle-missing", 0, &args); 674 EXPECT_END(KERN_INFO, 675 "OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1"); 676 677 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 678 679 /* Check for bad phandle in list */ 680 memset(&args, 0, sizeof(args)); 681 682 EXPECT_BEGIN(KERN_INFO, 683 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678"); 684 685 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", 686 "phandle", 0, &args); 687 EXPECT_END(KERN_INFO, 688 "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678"); 689 690 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 691 692 /* Check for incorrectly formed argument list */ 693 memset(&args, 0, sizeof(args)); 694 695 EXPECT_BEGIN(KERN_INFO, 696 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1"); 697 698 rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", 699 "phandle", 1, &args); 700 EXPECT_END(KERN_INFO, 701 "OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1"); 702 703 unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); 704 705 for (i = 0; i < ARRAY_SIZE(p); ++i) { 706 unittest(prefs[i] == OF_KREF_READ(p[i]), 707 "provider%d: expected:%d got:%d\n", 708 i, prefs[i], OF_KREF_READ(p[i])); 709 of_node_put(p[i]); 710 } 711 } 712 713 static void __init of_unittest_property_string(void) 714 { 715 const char *strings[4]; 716 struct device_node *np; 717 int rc; 718 719 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 720 if (!np) { 721 pr_err("No testcase data in device tree\n"); 722 return; 723 } 724 725 rc = of_property_match_string(np, "phandle-list-names", "first"); 726 unittest(rc == 0, "first expected:0 got:%i\n", rc); 727 rc = of_property_match_string(np, "phandle-list-names", "second"); 728 unittest(rc == 1, "second expected:1 got:%i\n", rc); 729 rc = of_property_match_string(np, "phandle-list-names", "third"); 730 unittest(rc == 2, "third expected:2 got:%i\n", rc); 731 rc = of_property_match_string(np, "phandle-list-names", "fourth"); 732 unittest(rc == -ENODATA, "unmatched string; rc=%i\n", rc); 733 rc = of_property_match_string(np, "missing-property", "blah"); 734 unittest(rc == -EINVAL, "missing property; rc=%i\n", rc); 735 rc = of_property_match_string(np, "empty-property", "blah"); 736 unittest(rc == -ENODATA, "empty property; rc=%i\n", rc); 737 rc = of_property_match_string(np, "unterminated-string", "blah"); 738 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 739 740 /* of_property_count_strings() tests */ 741 rc = of_property_count_strings(np, "string-property"); 742 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 743 rc = of_property_count_strings(np, "phandle-list-names"); 744 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 745 rc = of_property_count_strings(np, "unterminated-string"); 746 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 747 rc = of_property_count_strings(np, "unterminated-string-list"); 748 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 749 750 /* of_property_read_string_index() tests */ 751 rc = of_property_read_string_index(np, "string-property", 0, strings); 752 unittest(rc == 0 && !strcmp(strings[0], "foobar"), "of_property_read_string_index() failure; rc=%i\n", rc); 753 strings[0] = NULL; 754 rc = of_property_read_string_index(np, "string-property", 1, strings); 755 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 756 rc = of_property_read_string_index(np, "phandle-list-names", 0, strings); 757 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 758 rc = of_property_read_string_index(np, "phandle-list-names", 1, strings); 759 unittest(rc == 0 && !strcmp(strings[0], "second"), "of_property_read_string_index() failure; rc=%i\n", rc); 760 rc = of_property_read_string_index(np, "phandle-list-names", 2, strings); 761 unittest(rc == 0 && !strcmp(strings[0], "third"), "of_property_read_string_index() failure; rc=%i\n", rc); 762 strings[0] = NULL; 763 rc = of_property_read_string_index(np, "phandle-list-names", 3, strings); 764 unittest(rc == -ENODATA && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 765 strings[0] = NULL; 766 rc = of_property_read_string_index(np, "unterminated-string", 0, strings); 767 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 768 rc = of_property_read_string_index(np, "unterminated-string-list", 0, strings); 769 unittest(rc == 0 && !strcmp(strings[0], "first"), "of_property_read_string_index() failure; rc=%i\n", rc); 770 strings[0] = NULL; 771 rc = of_property_read_string_index(np, "unterminated-string-list", 2, strings); /* should fail */ 772 unittest(rc == -EILSEQ && strings[0] == NULL, "of_property_read_string_index() failure; rc=%i\n", rc); 773 strings[1] = NULL; 774 775 /* of_property_read_string_array() tests */ 776 rc = of_property_read_string_array(np, "string-property", strings, 4); 777 unittest(rc == 1, "Incorrect string count; rc=%i\n", rc); 778 rc = of_property_read_string_array(np, "phandle-list-names", strings, 4); 779 unittest(rc == 3, "Incorrect string count; rc=%i\n", rc); 780 rc = of_property_read_string_array(np, "unterminated-string", strings, 4); 781 unittest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc); 782 /* -- An incorrectly formed string should cause a failure */ 783 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 4); 784 unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n", rc); 785 /* -- parsing the correctly formed strings should still work: */ 786 strings[2] = NULL; 787 rc = of_property_read_string_array(np, "unterminated-string-list", strings, 2); 788 unittest(rc == 2 && strings[2] == NULL, "of_property_read_string_array() failure; rc=%i\n", rc); 789 strings[1] = NULL; 790 rc = of_property_read_string_array(np, "phandle-list-names", strings, 1); 791 unittest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); 792 } 793 794 #define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ 795 (p1)->value && (p2)->value && \ 796 !memcmp((p1)->value, (p2)->value, (p1)->length) && \ 797 !strcmp((p1)->name, (p2)->name)) 798 static void __init of_unittest_property_copy(void) 799 { 800 #ifdef CONFIG_OF_DYNAMIC 801 struct property p1 = { .name = "p1", .length = 0, .value = "" }; 802 struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; 803 struct property *new; 804 805 new = __of_prop_dup(&p1, GFP_KERNEL); 806 unittest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); 807 __of_prop_free(new); 808 809 new = __of_prop_dup(&p2, GFP_KERNEL); 810 unittest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); 811 __of_prop_free(new); 812 #endif 813 } 814 815 static void __init of_unittest_changeset(void) 816 { 817 #ifdef CONFIG_OF_DYNAMIC 818 int ret; 819 struct property *ppadd, padd = { .name = "prop-add", .length = 1, .value = "" }; 820 struct property *ppname_n1, pname_n1 = { .name = "name", .length = 3, .value = "n1" }; 821 struct property *ppname_n2, pname_n2 = { .name = "name", .length = 3, .value = "n2" }; 822 struct property *ppname_n21, pname_n21 = { .name = "name", .length = 3, .value = "n21" }; 823 struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; 824 struct property *ppremove; 825 struct device_node *n1, *n2, *n21, *n22, *nchangeset, *nremove, *parent, *np; 826 static const char * const str_array[] = { "str1", "str2", "str3" }; 827 const u32 u32_array[] = { 1, 2, 3 }; 828 struct of_changeset chgset; 829 const char *propstr = NULL; 830 831 n1 = __of_node_dup(NULL, "n1"); 832 unittest(n1, "testcase setup failure\n"); 833 834 n2 = __of_node_dup(NULL, "n2"); 835 unittest(n2, "testcase setup failure\n"); 836 837 n21 = __of_node_dup(NULL, "n21"); 838 unittest(n21, "testcase setup failure %p\n", n21); 839 840 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 841 nremove = of_get_child_by_name(nchangeset, "node-remove"); 842 unittest(nremove, "testcase setup failure\n"); 843 844 ppadd = __of_prop_dup(&padd, GFP_KERNEL); 845 unittest(ppadd, "testcase setup failure\n"); 846 847 ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL); 848 unittest(ppname_n1, "testcase setup failure\n"); 849 850 ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL); 851 unittest(ppname_n2, "testcase setup failure\n"); 852 853 ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL); 854 unittest(ppname_n21, "testcase setup failure\n"); 855 856 ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); 857 unittest(ppupdate, "testcase setup failure\n"); 858 859 parent = nchangeset; 860 n1->parent = parent; 861 n2->parent = parent; 862 n21->parent = n2; 863 864 ppremove = of_find_property(parent, "prop-remove", NULL); 865 unittest(ppremove, "failed to find removal prop"); 866 867 of_changeset_init(&chgset); 868 869 unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); 870 unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n"); 871 872 unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); 873 unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n"); 874 875 unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); 876 unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n"); 877 878 unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); 879 880 unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n"); 881 unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); 882 unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); 883 n22 = of_changeset_create_node(&chgset, n2, "n22"); 884 unittest(n22, "fail create n22\n"); 885 unittest(!of_changeset_add_prop_string(&chgset, n22, "prop-str", "abcd"), 886 "fail add prop prop-str"); 887 unittest(!of_changeset_add_prop_string_array(&chgset, n22, "prop-str-array", 888 (const char **)str_array, 889 ARRAY_SIZE(str_array)), 890 "fail add prop prop-str-array"); 891 unittest(!of_changeset_add_prop_u32_array(&chgset, n22, "prop-u32-array", 892 u32_array, ARRAY_SIZE(u32_array)), 893 "fail add prop prop-u32-array"); 894 895 unittest(!of_changeset_apply(&chgset), "apply failed\n"); 896 897 of_node_put(nchangeset); 898 899 /* Make sure node names are constructed correctly */ 900 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21")), 901 "'%pOF' not added\n", n21); 902 of_node_put(np); 903 unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n22")), 904 "'%pOF' not added\n", n22); 905 of_node_put(np); 906 907 unittest(!of_changeset_revert(&chgset), "revert failed\n"); 908 909 unittest(!of_find_node_by_path("/testcase-data/changeset/n2/n21"), 910 "'%pOF' still present after revert\n", n21); 911 912 unittest(of_property_present(parent, "prop-remove"), 913 "failed to find removed prop after revert\n"); 914 915 ret = of_property_read_string(parent, "prop-update", &propstr); 916 unittest(!ret, "failed to find updated prop after revert\n"); 917 if (!ret) 918 unittest(strcmp(propstr, "hello") == 0, "original value not in updated property after revert"); 919 920 of_changeset_destroy(&chgset); 921 922 of_node_put(n1); 923 of_node_put(n2); 924 of_node_put(n21); 925 of_node_put(n22); 926 #endif 927 } 928 929 static void __init __maybe_unused changeset_check_string(struct device_node *np, 930 const char *prop_name, 931 const char *expected_str) 932 { 933 const char *str; 934 int ret; 935 936 ret = of_property_read_string(np, prop_name, &str); 937 if (unittest(ret == 0, "failed to read %s\n", prop_name)) 938 return; 939 940 unittest(strcmp(str, expected_str) == 0, 941 "%s value mismatch (read '%s', exp '%s')\n", 942 prop_name, str, expected_str); 943 } 944 945 static void __init __maybe_unused changeset_check_string_array(struct device_node *np, 946 const char *prop_name, 947 const char * const *expected_array, 948 unsigned int count) 949 { 950 const char *str; 951 unsigned int i; 952 int ret; 953 int cnt; 954 955 cnt = of_property_count_strings(np, prop_name); 956 if (unittest(cnt >= 0, "failed to get %s count\n", prop_name)) 957 return; 958 959 if (unittest(cnt == count, 960 "%s count mismatch (read %d, exp %u)\n", 961 prop_name, cnt, count)) 962 return; 963 964 for (i = 0; i < count; i++) { 965 ret = of_property_read_string_index(np, prop_name, i, &str); 966 if (unittest(ret == 0, "failed to read %s[%d]\n", prop_name, i)) 967 continue; 968 969 unittest(strcmp(str, expected_array[i]) == 0, 970 "%s[%d] value mismatch (read '%s', exp '%s')\n", 971 prop_name, i, str, expected_array[i]); 972 } 973 } 974 975 static void __init __maybe_unused changeset_check_u32(struct device_node *np, 976 const char *prop_name, 977 u32 expected_u32) 978 { 979 u32 val32; 980 int ret; 981 982 ret = of_property_read_u32(np, prop_name, &val32); 983 if (unittest(ret == 0, "failed to read %s\n", prop_name)) 984 return; 985 986 unittest(val32 == expected_u32, 987 "%s value mismatch (read '%u', exp '%u')\n", 988 prop_name, val32, expected_u32); 989 } 990 991 static void __init __maybe_unused changeset_check_u32_array(struct device_node *np, 992 const char *prop_name, 993 const u32 *expected_array, 994 unsigned int count) 995 { 996 unsigned int i; 997 u32 val32; 998 int ret; 999 int cnt; 1000 1001 cnt = of_property_count_u32_elems(np, prop_name); 1002 if (unittest(cnt >= 0, "failed to get %s count\n", prop_name)) 1003 return; 1004 1005 if (unittest(cnt == count, 1006 "%s count mismatch (read %d, exp %u)\n", 1007 prop_name, cnt, count)) 1008 return; 1009 1010 for (i = 0; i < count; i++) { 1011 ret = of_property_read_u32_index(np, prop_name, i, &val32); 1012 if (unittest(ret == 0, "failed to read %s[%d]\n", prop_name, i)) 1013 continue; 1014 1015 unittest(val32 == expected_array[i], 1016 "%s[%d] value mismatch (read '%u', exp '%u')\n", 1017 prop_name, i, val32, expected_array[i]); 1018 } 1019 } 1020 1021 static void __init __maybe_unused changeset_check_bool(struct device_node *np, 1022 const char *prop_name) 1023 { 1024 unittest(of_property_read_bool(np, prop_name), 1025 "%s value mismatch (read 'false', exp 'true')\n", prop_name); 1026 } 1027 1028 static void __init of_unittest_changeset_prop(void) 1029 { 1030 #ifdef CONFIG_OF_DYNAMIC 1031 static const char * const str_array[] = { "abc", "defg", "hij" }; 1032 static const u32 u32_array[] = { 123, 4567, 89, 10, 11 }; 1033 struct device_node *nchangeset, *np; 1034 struct of_changeset chgset; 1035 int ret; 1036 1037 nchangeset = of_find_node_by_path("/testcase-data/changeset"); 1038 if (!nchangeset) { 1039 pr_err("missing testcase data\n"); 1040 return; 1041 } 1042 1043 of_changeset_init(&chgset); 1044 1045 np = of_changeset_create_node(&chgset, nchangeset, "test-prop"); 1046 if (unittest(np, "failed to create test-prop node\n")) 1047 goto end_changeset_destroy; 1048 1049 ret = of_changeset_add_prop_string(&chgset, np, "prop-string", "abcde"); 1050 unittest(ret == 0, "failed to add prop-string\n"); 1051 1052 ret = of_changeset_add_prop_string_array(&chgset, np, "prop-string-array", 1053 str_array, ARRAY_SIZE(str_array)); 1054 unittest(ret == 0, "failed to add prop-string-array\n"); 1055 1056 ret = of_changeset_add_prop_u32(&chgset, np, "prop-u32", 1234); 1057 unittest(ret == 0, "failed to add prop-u32\n"); 1058 1059 ret = of_changeset_add_prop_u32_array(&chgset, np, "prop-u32-array", 1060 u32_array, ARRAY_SIZE(u32_array)); 1061 unittest(ret == 0, "failed to add prop-u32-array\n"); 1062 1063 ret = of_changeset_add_prop_bool(&chgset, np, "prop-bool"); 1064 unittest(ret == 0, "failed to add prop-bool\n"); 1065 1066 of_node_put(np); 1067 1068 ret = of_changeset_apply(&chgset); 1069 if (unittest(ret == 0, "failed to apply changeset\n")) 1070 goto end_changeset_destroy; 1071 1072 np = of_find_node_by_path("/testcase-data/changeset/test-prop"); 1073 if (unittest(np, "failed to find test-prop node\n")) 1074 goto end_revert_changeset; 1075 1076 changeset_check_string(np, "prop-string", "abcde"); 1077 changeset_check_string_array(np, "prop-string-array", str_array, ARRAY_SIZE(str_array)); 1078 changeset_check_u32(np, "prop-u32", 1234); 1079 changeset_check_u32_array(np, "prop-u32-array", u32_array, ARRAY_SIZE(u32_array)); 1080 changeset_check_bool(np, "prop-bool"); 1081 1082 of_node_put(np); 1083 1084 end_revert_changeset: 1085 ret = of_changeset_revert(&chgset); 1086 unittest(ret == 0, "failed to revert changeset\n"); 1087 1088 end_changeset_destroy: 1089 of_changeset_destroy(&chgset); 1090 of_node_put(nchangeset); 1091 #endif 1092 } 1093 1094 static void __init of_unittest_dma_get_max_cpu_address(void) 1095 { 1096 struct device_node *np; 1097 phys_addr_t cpu_addr; 1098 1099 if (!IS_ENABLED(CONFIG_OF_ADDRESS)) 1100 return; 1101 1102 np = of_find_node_by_path("/testcase-data/address-tests"); 1103 if (!np) { 1104 pr_err("missing testcase data\n"); 1105 return; 1106 } 1107 1108 cpu_addr = of_dma_get_max_cpu_address(np); 1109 unittest(cpu_addr == 0x4fffffff, 1110 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n", 1111 &cpu_addr, 0x4fffffff); 1112 } 1113 1114 static void __init of_unittest_dma_ranges_one(const char *path, 1115 u64 expect_dma_addr, u64 expect_paddr) 1116 { 1117 #ifdef CONFIG_HAS_DMA 1118 struct device_node *np; 1119 const struct bus_dma_region *map = NULL; 1120 int rc; 1121 1122 np = of_find_node_by_path(path); 1123 if (!np) { 1124 pr_err("missing testcase data\n"); 1125 return; 1126 } 1127 1128 rc = of_dma_get_range(np, &map); 1129 1130 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); 1131 1132 if (!rc) { 1133 phys_addr_t paddr; 1134 dma_addr_t dma_addr; 1135 struct device *dev_bogus; 1136 1137 dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL); 1138 if (!dev_bogus) { 1139 unittest(0, "kzalloc() failed\n"); 1140 kfree(map); 1141 return; 1142 } 1143 1144 dev_bogus->dma_range_map = map; 1145 paddr = dma_to_phys(dev_bogus, expect_dma_addr); 1146 dma_addr = phys_to_dma(dev_bogus, expect_paddr); 1147 1148 unittest(paddr == expect_paddr, 1149 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n", 1150 &paddr, expect_paddr, np); 1151 unittest(dma_addr == expect_dma_addr, 1152 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n", 1153 &dma_addr, expect_dma_addr, np); 1154 1155 kfree(map); 1156 kfree(dev_bogus); 1157 } 1158 of_node_put(np); 1159 #endif 1160 } 1161 1162 static void __init of_unittest_parse_dma_ranges(void) 1163 { 1164 of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", 1165 0x0, 0x20000000); 1166 if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT)) 1167 of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", 1168 0x100000000, 0x20000000); 1169 of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", 1170 0x80000000, 0x20000000); 1171 } 1172 1173 static void __init of_unittest_pci_dma_ranges(void) 1174 { 1175 struct device_node *np; 1176 struct of_pci_range range; 1177 struct of_pci_range_parser parser; 1178 int i = 0; 1179 1180 if (!IS_ENABLED(CONFIG_PCI)) 1181 return; 1182 1183 np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); 1184 if (!np) { 1185 pr_err("missing testcase data\n"); 1186 return; 1187 } 1188 1189 if (of_pci_dma_range_parser_init(&parser, np)) { 1190 pr_err("missing dma-ranges property\n"); 1191 return; 1192 } 1193 1194 /* 1195 * Get the dma-ranges from the device tree 1196 */ 1197 for_each_of_pci_range(&parser, &range) { 1198 if (!i) { 1199 unittest(range.size == 0x10000000, 1200 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 1201 np, range.size); 1202 unittest(range.cpu_addr == 0x20000000, 1203 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 1204 range.cpu_addr, np); 1205 unittest(range.pci_addr == 0x80000000, 1206 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 1207 range.pci_addr, np); 1208 } else { 1209 unittest(range.size == 0x10000000, 1210 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 1211 np, range.size); 1212 unittest(range.cpu_addr == 0x40000000, 1213 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 1214 range.cpu_addr, np); 1215 unittest(range.pci_addr == 0xc0000000, 1216 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 1217 range.pci_addr, np); 1218 } 1219 i++; 1220 } 1221 1222 of_node_put(np); 1223 } 1224 1225 static void __init of_unittest_pci_empty_dma_ranges(void) 1226 { 1227 struct device_node *np; 1228 struct of_pci_range range; 1229 struct of_pci_range_parser parser; 1230 1231 if (!IS_ENABLED(CONFIG_PCI)) 1232 return; 1233 1234 np = of_find_node_by_path("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0"); 1235 if (!np) { 1236 pr_err("missing testcase data\n"); 1237 return; 1238 } 1239 1240 if (of_pci_dma_range_parser_init(&parser, np)) { 1241 pr_err("missing dma-ranges property\n"); 1242 return; 1243 } 1244 1245 /* 1246 * Get the dma-ranges from the device tree 1247 */ 1248 for_each_of_pci_range(&parser, &range) { 1249 unittest(range.size == 0x10000000, 1250 "for_each_of_pci_range wrong size on node %pOF size=%llx\n", 1251 np, range.size); 1252 unittest(range.cpu_addr == 0x00000000, 1253 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", 1254 range.cpu_addr, np); 1255 unittest(range.pci_addr == 0xc0000000, 1256 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", 1257 range.pci_addr, np); 1258 } 1259 1260 of_node_put(np); 1261 } 1262 1263 static void __init of_unittest_bus_ranges(void) 1264 { 1265 struct device_node *np; 1266 struct of_range range; 1267 struct of_range_parser parser; 1268 struct resource res; 1269 int ret, count, i = 0; 1270 1271 np = of_find_node_by_path("/testcase-data/address-tests"); 1272 if (!np) { 1273 pr_err("missing testcase data\n"); 1274 return; 1275 } 1276 1277 if (of_range_parser_init(&parser, np)) { 1278 pr_err("missing ranges property\n"); 1279 return; 1280 } 1281 1282 ret = of_range_to_resource(np, 1, &res); 1283 unittest(!ret, "of_range_to_resource returned error (%d) node %pOF\n", 1284 ret, np); 1285 unittest(resource_type(&res) == IORESOURCE_MEM, 1286 "of_range_to_resource wrong resource type on node %pOF res=%pR\n", 1287 np, &res); 1288 unittest(res.start == 0xd0000000, 1289 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n", 1290 np, &res); 1291 unittest(resource_size(&res) == 0x20000000, 1292 "of_range_to_resource wrong resource start address on node %pOF res=%pR\n", 1293 np, &res); 1294 1295 count = of_range_count(&parser); 1296 unittest(count == 2, 1297 "of_range_count wrong size on node %pOF count=%d\n", 1298 np, count); 1299 1300 /* 1301 * Get the "ranges" from the device tree 1302 */ 1303 for_each_of_range(&parser, &range) { 1304 unittest(range.flags == IORESOURCE_MEM, 1305 "for_each_of_range wrong flags on node %pOF flags=%x (expected %x)\n", 1306 np, range.flags, IORESOURCE_MEM); 1307 if (!i) { 1308 unittest(range.size == 0x50000000, 1309 "for_each_of_range wrong size on node %pOF size=%llx\n", 1310 np, range.size); 1311 unittest(range.cpu_addr == 0x70000000, 1312 "for_each_of_range wrong CPU addr (%llx) on node %pOF", 1313 range.cpu_addr, np); 1314 unittest(range.bus_addr == 0x70000000, 1315 "for_each_of_range wrong bus addr (%llx) on node %pOF", 1316 range.pci_addr, np); 1317 } else { 1318 unittest(range.size == 0x20000000, 1319 "for_each_of_range wrong size on node %pOF size=%llx\n", 1320 np, range.size); 1321 unittest(range.cpu_addr == 0xd0000000, 1322 "for_each_of_range wrong CPU addr (%llx) on node %pOF", 1323 range.cpu_addr, np); 1324 unittest(range.bus_addr == 0x00000000, 1325 "for_each_of_range wrong bus addr (%llx) on node %pOF", 1326 range.pci_addr, np); 1327 } 1328 i++; 1329 } 1330 1331 of_node_put(np); 1332 } 1333 1334 static void __init of_unittest_bus_3cell_ranges(void) 1335 { 1336 struct device_node *np; 1337 struct of_range range; 1338 struct of_range_parser parser; 1339 int i = 0; 1340 1341 np = of_find_node_by_path("/testcase-data/address-tests/bus@a0000000"); 1342 if (!np) { 1343 pr_err("missing testcase data\n"); 1344 return; 1345 } 1346 1347 if (of_range_parser_init(&parser, np)) { 1348 pr_err("missing ranges property\n"); 1349 return; 1350 } 1351 1352 /* 1353 * Get the "ranges" from the device tree 1354 */ 1355 for_each_of_range(&parser, &range) { 1356 if (!i) { 1357 unittest(range.flags == 0xf00baa, 1358 "for_each_of_range wrong flags on node %pOF flags=%x\n", 1359 np, range.flags); 1360 unittest(range.size == 0x100000, 1361 "for_each_of_range wrong size on node %pOF size=%llx\n", 1362 np, range.size); 1363 unittest(range.cpu_addr == 0xa0000000, 1364 "for_each_of_range wrong CPU addr (%llx) on node %pOF", 1365 range.cpu_addr, np); 1366 unittest(range.bus_addr == 0x0, 1367 "for_each_of_range wrong bus addr (%llx) on node %pOF", 1368 range.pci_addr, np); 1369 } else { 1370 unittest(range.flags == 0xf00bee, 1371 "for_each_of_range wrong flags on node %pOF flags=%x\n", 1372 np, range.flags); 1373 unittest(range.size == 0x200000, 1374 "for_each_of_range wrong size on node %pOF size=%llx\n", 1375 np, range.size); 1376 unittest(range.cpu_addr == 0xb0000000, 1377 "for_each_of_range wrong CPU addr (%llx) on node %pOF", 1378 range.cpu_addr, np); 1379 unittest(range.bus_addr == 0x100000000, 1380 "for_each_of_range wrong bus addr (%llx) on node %pOF", 1381 range.pci_addr, np); 1382 } 1383 i++; 1384 } 1385 1386 of_node_put(np); 1387 } 1388 1389 static void __init of_unittest_reg(void) 1390 { 1391 struct device_node *np; 1392 struct resource res; 1393 int ret; 1394 u64 addr, size; 1395 1396 np = of_find_node_by_path("/testcase-data/address-tests/bus@80000000/device@1000"); 1397 if (!np) { 1398 pr_err("missing testcase data\n"); 1399 return; 1400 } 1401 1402 ret = of_property_read_reg(np, 0, &addr, &size); 1403 unittest(!ret, "of_property_read_reg(%pOF) returned error %d\n", 1404 np, ret); 1405 unittest(addr == 0x1000, "of_property_read_reg(%pOF) untranslated address (%llx) incorrect\n", 1406 np, addr); 1407 1408 of_node_put(np); 1409 1410 np = of_find_node_by_path("/testcase-data/platform-tests-2/node/test-device@100"); 1411 if (!np) { 1412 pr_err("missing testcase data\n"); 1413 return; 1414 } 1415 1416 ret = of_address_to_resource(np, 0, &res); 1417 unittest(ret == -EINVAL, "of_address_to_resource(%pOF) expected error on untranslatable address\n", 1418 np); 1419 1420 of_node_put(np); 1421 1422 } 1423 1424 struct of_unittest_expected_res { 1425 int index; 1426 struct resource res; 1427 }; 1428 1429 static void __init of_unittest_check_addr(const char *node_path, 1430 const struct of_unittest_expected_res *tab_exp, 1431 unsigned int tab_exp_count) 1432 { 1433 const struct of_unittest_expected_res *expected; 1434 struct device_node *np; 1435 struct resource res; 1436 unsigned int count; 1437 int ret; 1438 1439 if (!IS_ENABLED(CONFIG_OF_ADDRESS)) 1440 return; 1441 1442 np = of_find_node_by_path(node_path); 1443 if (!np) { 1444 pr_err("missing testcase data (%s)\n", node_path); 1445 return; 1446 } 1447 1448 expected = tab_exp; 1449 count = tab_exp_count; 1450 while (count--) { 1451 ret = of_address_to_resource(np, expected->index, &res); 1452 unittest(!ret, "of_address_to_resource(%pOF, %d) returned error %d\n", 1453 np, expected->index, ret); 1454 unittest(resource_type(&res) == resource_type(&expected->res) && 1455 res.start == expected->res.start && 1456 resource_size(&res) == resource_size(&expected->res), 1457 "of_address_to_resource(%pOF, %d) wrong resource %pR, expected %pR\n", 1458 np, expected->index, &res, &expected->res); 1459 expected++; 1460 } 1461 1462 of_node_put(np); 1463 } 1464 1465 static const struct of_unittest_expected_res of_unittest_reg_2cell_expected_res[] = { 1466 {.index = 0, .res = DEFINE_RES_MEM(0xa0a01000, 0x100) }, 1467 {.index = 1, .res = DEFINE_RES_MEM(0xa0a02000, 0x100) }, 1468 {.index = 2, .res = DEFINE_RES_MEM(0xc0c01000, 0x100) }, 1469 {.index = 3, .res = DEFINE_RES_MEM(0xd0d01000, 0x100) }, 1470 }; 1471 1472 static const struct of_unittest_expected_res of_unittest_reg_3cell_expected_res[] = { 1473 {.index = 0, .res = DEFINE_RES_MEM(0xa0a01000, 0x100) }, 1474 {.index = 1, .res = DEFINE_RES_MEM(0xa0b02000, 0x100) }, 1475 {.index = 2, .res = DEFINE_RES_MEM(0xc0c01000, 0x100) }, 1476 {.index = 3, .res = DEFINE_RES_MEM(0xc0c09000, 0x100) }, 1477 {.index = 4, .res = DEFINE_RES_MEM(0xd0d01000, 0x100) }, 1478 }; 1479 1480 static const struct of_unittest_expected_res of_unittest_reg_pci_expected_res[] = { 1481 {.index = 0, .res = DEFINE_RES_MEM(0xe8001000, 0x1000) }, 1482 {.index = 1, .res = DEFINE_RES_MEM(0xea002000, 0x2000) }, 1483 }; 1484 1485 static void __init of_unittest_translate_addr(void) 1486 { 1487 of_unittest_check_addr("/testcase-data/address-tests2/bus-2cell@10000000/device@100000", 1488 of_unittest_reg_2cell_expected_res, 1489 ARRAY_SIZE(of_unittest_reg_2cell_expected_res)); 1490 1491 of_unittest_check_addr("/testcase-data/address-tests2/bus-3cell@20000000/local-bus@100000/device@f1001000", 1492 of_unittest_reg_3cell_expected_res, 1493 ARRAY_SIZE(of_unittest_reg_3cell_expected_res)); 1494 1495 of_unittest_check_addr("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0/dev@e0000000", 1496 of_unittest_reg_pci_expected_res, 1497 ARRAY_SIZE(of_unittest_reg_pci_expected_res)); 1498 } 1499 1500 static void __init of_unittest_parse_interrupts(void) 1501 { 1502 struct device_node *np; 1503 struct of_phandle_args args; 1504 int i, rc; 1505 1506 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1507 return; 1508 1509 np = of_find_node_by_path("/testcase-data/interrupts/interrupts0"); 1510 if (!np) { 1511 pr_err("missing testcase data\n"); 1512 return; 1513 } 1514 1515 for (i = 0; i < 4; i++) { 1516 bool passed = true; 1517 1518 memset(&args, 0, sizeof(args)); 1519 rc = of_irq_parse_one(np, i, &args); 1520 1521 passed &= !rc; 1522 passed &= (args.args_count == 1); 1523 passed &= (args.args[0] == (i + 1)); 1524 1525 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1526 i, args.np, rc); 1527 } 1528 of_node_put(np); 1529 1530 np = of_find_node_by_path("/testcase-data/interrupts/interrupts1"); 1531 if (!np) { 1532 pr_err("missing testcase data\n"); 1533 return; 1534 } 1535 1536 for (i = 0; i < 4; i++) { 1537 bool passed = true; 1538 1539 memset(&args, 0, sizeof(args)); 1540 rc = of_irq_parse_one(np, i, &args); 1541 1542 /* Test the values from tests-phandle.dtsi */ 1543 switch (i) { 1544 case 0: 1545 passed &= !rc; 1546 passed &= (args.args_count == 1); 1547 passed &= (args.args[0] == 9); 1548 break; 1549 case 1: 1550 passed &= !rc; 1551 passed &= (args.args_count == 3); 1552 passed &= (args.args[0] == 10); 1553 passed &= (args.args[1] == 11); 1554 passed &= (args.args[2] == 12); 1555 break; 1556 case 2: 1557 passed &= !rc; 1558 passed &= (args.args_count == 2); 1559 passed &= (args.args[0] == 13); 1560 passed &= (args.args[1] == 14); 1561 break; 1562 case 3: 1563 passed &= !rc; 1564 passed &= (args.args_count == 2); 1565 passed &= (args.args[0] == 15); 1566 passed &= (args.args[1] == 16); 1567 break; 1568 default: 1569 passed = false; 1570 } 1571 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1572 i, args.np, rc); 1573 } 1574 of_node_put(np); 1575 } 1576 1577 static void __init of_unittest_parse_interrupts_extended(void) 1578 { 1579 struct device_node *np; 1580 struct of_phandle_args args; 1581 int i, rc; 1582 1583 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1584 return; 1585 1586 np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1587 if (!np) { 1588 pr_err("missing testcase data\n"); 1589 return; 1590 } 1591 1592 for (i = 0; i < 7; i++) { 1593 bool passed = true; 1594 1595 memset(&args, 0, sizeof(args)); 1596 rc = of_irq_parse_one(np, i, &args); 1597 1598 /* Test the values from tests-phandle.dtsi */ 1599 switch (i) { 1600 case 0: 1601 passed &= !rc; 1602 passed &= (args.args_count == 1); 1603 passed &= (args.args[0] == 1); 1604 break; 1605 case 1: 1606 passed &= !rc; 1607 passed &= (args.args_count == 3); 1608 passed &= (args.args[0] == 2); 1609 passed &= (args.args[1] == 3); 1610 passed &= (args.args[2] == 4); 1611 break; 1612 case 2: 1613 passed &= !rc; 1614 passed &= (args.args_count == 2); 1615 passed &= (args.args[0] == 5); 1616 passed &= (args.args[1] == 6); 1617 break; 1618 case 3: 1619 passed &= !rc; 1620 passed &= (args.args_count == 1); 1621 passed &= (args.args[0] == 9); 1622 break; 1623 case 4: 1624 passed &= !rc; 1625 passed &= (args.args_count == 3); 1626 passed &= (args.args[0] == 10); 1627 passed &= (args.args[1] == 11); 1628 passed &= (args.args[2] == 12); 1629 break; 1630 case 5: 1631 passed &= !rc; 1632 passed &= (args.args_count == 2); 1633 passed &= (args.args[0] == 13); 1634 passed &= (args.args[1] == 14); 1635 break; 1636 case 6: 1637 /* 1638 * Tests child node that is missing property 1639 * #address-cells. See the comments in 1640 * drivers/of/unittest-data/tests-interrupts.dtsi 1641 * nodes intmap1 and interrupts-extended0 1642 */ 1643 passed &= !rc; 1644 passed &= (args.args_count == 1); 1645 passed &= (args.args[0] == 15); 1646 break; 1647 default: 1648 passed = false; 1649 } 1650 1651 unittest(passed, "index %i - data error on node %pOF rc=%i\n", 1652 i, args.np, rc); 1653 } 1654 of_node_put(np); 1655 } 1656 1657 #if IS_ENABLED(CONFIG_OF_DYNAMIC) 1658 static void __init of_unittest_irq_refcount(void) 1659 { 1660 struct of_phandle_args args; 1661 struct device_node *intc0, *int_ext0; 1662 struct device_node *int2, *intc_intmap0; 1663 unsigned int ref_c0, ref_c1, ref_c2; 1664 int rc; 1665 bool passed; 1666 1667 if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) 1668 return; 1669 1670 intc0 = of_find_node_by_path("/testcase-data/interrupts/intc0"); 1671 int_ext0 = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0"); 1672 intc_intmap0 = of_find_node_by_path("/testcase-data/interrupts/intc-intmap0"); 1673 int2 = of_find_node_by_path("/testcase-data/interrupts/interrupts2"); 1674 if (!intc0 || !int_ext0 || !intc_intmap0 || !int2) { 1675 pr_err("missing testcase data\n"); 1676 goto out; 1677 } 1678 1679 /* Test refcount for API of_irq_parse_one() */ 1680 passed = true; 1681 ref_c0 = OF_KREF_READ(intc0); 1682 ref_c1 = ref_c0 + 1; 1683 memset(&args, 0, sizeof(args)); 1684 rc = of_irq_parse_one(int_ext0, 0, &args); 1685 ref_c2 = OF_KREF_READ(intc0); 1686 of_node_put(args.np); 1687 1688 passed &= !rc; 1689 passed &= (args.np == intc0); 1690 passed &= (args.args_count == 1); 1691 passed &= (args.args[0] == 1); 1692 passed &= (ref_c1 == ref_c2); 1693 unittest(passed, "IRQ refcount case #1 failed, original(%u) expected(%u) got(%u)\n", 1694 ref_c0, ref_c1, ref_c2); 1695 1696 /* Test refcount for API of_irq_parse_raw() */ 1697 passed = true; 1698 ref_c0 = OF_KREF_READ(intc_intmap0); 1699 ref_c1 = ref_c0 + 1; 1700 memset(&args, 0, sizeof(args)); 1701 rc = of_irq_parse_one(int2, 0, &args); 1702 ref_c2 = OF_KREF_READ(intc_intmap0); 1703 of_node_put(args.np); 1704 1705 passed &= !rc; 1706 passed &= (args.np == intc_intmap0); 1707 passed &= (args.args_count == 1); 1708 passed &= (args.args[0] == 2); 1709 passed &= (ref_c1 == ref_c2); 1710 unittest(passed, "IRQ refcount case #2 failed, original(%u) expected(%u) got(%u)\n", 1711 ref_c0, ref_c1, ref_c2); 1712 1713 out: 1714 of_node_put(int2); 1715 of_node_put(intc_intmap0); 1716 of_node_put(int_ext0); 1717 of_node_put(intc0); 1718 } 1719 #else 1720 static inline void __init of_unittest_irq_refcount(void) { } 1721 #endif 1722 1723 static const struct of_device_id match_node_table[] = { 1724 { .data = "A", .name = "name0", }, /* Name alone is lowest priority */ 1725 { .data = "B", .type = "type1", }, /* followed by type alone */ 1726 1727 { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */ 1728 { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */ 1729 { .data = "Cc", .name = "name2", .type = "type2", }, 1730 1731 { .data = "E", .compatible = "compat3" }, 1732 { .data = "G", .compatible = "compat2", }, 1733 { .data = "H", .compatible = "compat2", .name = "name5", }, 1734 { .data = "I", .compatible = "compat2", .type = "type1", }, 1735 { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", }, 1736 { .data = "K", .compatible = "compat2", .name = "name9", }, 1737 {} 1738 }; 1739 1740 static struct { 1741 const char *path; 1742 const char *data; 1743 } match_node_tests[] = { 1744 { .path = "/testcase-data/match-node/name0", .data = "A", }, 1745 { .path = "/testcase-data/match-node/name1", .data = "B", }, 1746 { .path = "/testcase-data/match-node/a/name2", .data = "Ca", }, 1747 { .path = "/testcase-data/match-node/b/name2", .data = "Cb", }, 1748 { .path = "/testcase-data/match-node/c/name2", .data = "Cc", }, 1749 { .path = "/testcase-data/match-node/name3", .data = "E", }, 1750 { .path = "/testcase-data/match-node/name4", .data = "G", }, 1751 { .path = "/testcase-data/match-node/name5", .data = "H", }, 1752 { .path = "/testcase-data/match-node/name6", .data = "G", }, 1753 { .path = "/testcase-data/match-node/name7", .data = "I", }, 1754 { .path = "/testcase-data/match-node/name8", .data = "J", }, 1755 { .path = "/testcase-data/match-node/name9", .data = "K", }, 1756 }; 1757 1758 static void __init of_unittest_match_node(void) 1759 { 1760 struct device_node *np; 1761 const struct of_device_id *match; 1762 int i; 1763 1764 for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) { 1765 np = of_find_node_by_path(match_node_tests[i].path); 1766 if (!np) { 1767 unittest(0, "missing testcase node %s\n", 1768 match_node_tests[i].path); 1769 continue; 1770 } 1771 1772 match = of_match_node(match_node_table, np); 1773 if (!match) { 1774 unittest(0, "%s didn't match anything\n", 1775 match_node_tests[i].path); 1776 continue; 1777 } 1778 1779 if (strcmp(match->data, match_node_tests[i].data) != 0) { 1780 unittest(0, "%s got wrong match. expected %s, got %s\n", 1781 match_node_tests[i].path, match_node_tests[i].data, 1782 (const char *)match->data); 1783 continue; 1784 } 1785 unittest(1, "passed"); 1786 } 1787 } 1788 1789 static struct resource test_bus_res = DEFINE_RES_MEM(0xfffffff8, 2); 1790 static const struct platform_device_info test_bus_info = { 1791 .name = "unittest-bus", 1792 }; 1793 static void __init of_unittest_platform_populate(void) 1794 { 1795 int irq, rc; 1796 struct device_node *np, *child, *grandchild; 1797 struct platform_device *pdev, *test_bus; 1798 const struct of_device_id match[] = { 1799 { .compatible = "test-device", }, 1800 {} 1801 }; 1802 1803 np = of_find_node_by_path("/testcase-data"); 1804 of_platform_default_populate(np, NULL, NULL); 1805 1806 /* Test that a missing irq domain returns -EPROBE_DEFER */ 1807 np = of_find_node_by_path("/testcase-data/testcase-device1"); 1808 pdev = of_find_device_by_node(np); 1809 unittest(pdev, "device 1 creation failed\n"); 1810 1811 if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) { 1812 irq = platform_get_irq(pdev, 0); 1813 unittest(irq == -EPROBE_DEFER, 1814 "device deferred probe failed - %d\n", irq); 1815 1816 /* Test that a parsing failure does not return -EPROBE_DEFER */ 1817 np = of_find_node_by_path("/testcase-data/testcase-device2"); 1818 pdev = of_find_device_by_node(np); 1819 unittest(pdev, "device 2 creation failed\n"); 1820 1821 EXPECT_BEGIN(KERN_INFO, 1822 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found"); 1823 1824 irq = platform_get_irq(pdev, 0); 1825 1826 EXPECT_END(KERN_INFO, 1827 "platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found"); 1828 1829 unittest(irq < 0 && irq != -EPROBE_DEFER, 1830 "device parsing error failed - %d\n", irq); 1831 } 1832 1833 np = of_find_node_by_path("/testcase-data/platform-tests"); 1834 unittest(np, "No testcase data in device tree\n"); 1835 if (!np) 1836 return; 1837 1838 test_bus = platform_device_register_full(&test_bus_info); 1839 rc = PTR_ERR_OR_ZERO(test_bus); 1840 unittest(!rc, "testbus registration failed; rc=%i\n", rc); 1841 if (rc) { 1842 of_node_put(np); 1843 return; 1844 } 1845 test_bus->dev.of_node = np; 1846 1847 /* 1848 * Add a dummy resource to the test bus node after it is 1849 * registered to catch problems with un-inserted resources. The 1850 * DT code doesn't insert the resources, and it has caused the 1851 * kernel to oops in the past. This makes sure the same bug 1852 * doesn't crop up again. 1853 */ 1854 platform_device_add_resources(test_bus, &test_bus_res, 1); 1855 1856 of_platform_populate(np, match, NULL, &test_bus->dev); 1857 for_each_child_of_node(np, child) { 1858 for_each_child_of_node(child, grandchild) { 1859 pdev = of_find_device_by_node(grandchild); 1860 unittest(pdev, 1861 "Could not create device for node '%pOFn'\n", 1862 grandchild); 1863 platform_device_put(pdev); 1864 } 1865 } 1866 1867 of_platform_depopulate(&test_bus->dev); 1868 for_each_child_of_node(np, child) { 1869 for_each_child_of_node(child, grandchild) 1870 unittest(!of_find_device_by_node(grandchild), 1871 "device didn't get destroyed '%pOFn'\n", 1872 grandchild); 1873 } 1874 1875 platform_device_unregister(test_bus); 1876 of_node_put(np); 1877 } 1878 1879 /** 1880 * update_node_properties - adds the properties 1881 * of np into dup node (present in live tree) and 1882 * updates parent of children of np to dup. 1883 * 1884 * @np: node whose properties are being added to the live tree 1885 * @dup: node present in live tree to be updated 1886 */ 1887 static void update_node_properties(struct device_node *np, 1888 struct device_node *dup) 1889 { 1890 struct property *prop; 1891 struct property *save_next; 1892 struct device_node *child; 1893 int ret; 1894 1895 for_each_child_of_node(np, child) 1896 child->parent = dup; 1897 1898 /* 1899 * "unittest internal error: unable to add testdata property" 1900 * 1901 * If this message reports a property in node '/__symbols__' then 1902 * the respective unittest overlay contains a label that has the 1903 * same name as a label in the live devicetree. The label will 1904 * be in the live devicetree only if the devicetree source was 1905 * compiled with the '-@' option. If you encounter this error, 1906 * please consider renaming __all__ of the labels in the unittest 1907 * overlay dts files with an odd prefix that is unlikely to be 1908 * used in a real devicetree. 1909 */ 1910 1911 /* 1912 * open code for_each_property_of_node() because of_add_property() 1913 * sets prop->next to NULL 1914 */ 1915 for (prop = np->properties; prop != NULL; prop = save_next) { 1916 save_next = prop->next; 1917 ret = of_add_property(dup, prop); 1918 if (ret) { 1919 if (ret == -EEXIST && !strcmp(prop->name, "name")) 1920 continue; 1921 pr_err("unittest internal error: unable to add testdata property %pOF/%s", 1922 np, prop->name); 1923 } 1924 } 1925 } 1926 1927 /** 1928 * attach_node_and_children - attaches nodes 1929 * and its children to live tree. 1930 * CAUTION: misleading function name - if node @np already exists in 1931 * the live tree then children of @np are *not* attached to the live 1932 * tree. This works for the current test devicetree nodes because such 1933 * nodes do not have child nodes. 1934 * 1935 * @np: Node to attach to live tree 1936 */ 1937 static void attach_node_and_children(struct device_node *np) 1938 { 1939 struct device_node *next, *dup, *child; 1940 unsigned long flags; 1941 const char *full_name; 1942 1943 full_name = kasprintf(GFP_KERNEL, "%pOF", np); 1944 if (!full_name) 1945 return; 1946 1947 if (!strcmp(full_name, "/__local_fixups__") || 1948 !strcmp(full_name, "/__fixups__")) { 1949 kfree(full_name); 1950 return; 1951 } 1952 1953 dup = of_find_node_by_path(full_name); 1954 kfree(full_name); 1955 if (dup) { 1956 update_node_properties(np, dup); 1957 return; 1958 } 1959 1960 child = np->child; 1961 np->child = NULL; 1962 1963 mutex_lock(&of_mutex); 1964 raw_spin_lock_irqsave(&devtree_lock, flags); 1965 np->sibling = np->parent->child; 1966 np->parent->child = np; 1967 of_node_clear_flag(np, OF_DETACHED); 1968 raw_spin_unlock_irqrestore(&devtree_lock, flags); 1969 1970 __of_attach_node_sysfs(np); 1971 mutex_unlock(&of_mutex); 1972 1973 while (child) { 1974 next = child->sibling; 1975 attach_node_and_children(child); 1976 child = next; 1977 } 1978 } 1979 1980 /** 1981 * unittest_data_add - Reads, copies data from 1982 * linked tree and attaches it to the live tree 1983 */ 1984 static int __init unittest_data_add(void) 1985 { 1986 void *unittest_data; 1987 void *unittest_data_align; 1988 struct device_node *unittest_data_node = NULL, *np; 1989 /* 1990 * __dtbo_testcases_begin[] and __dtbo_testcases_end[] are magically 1991 * created by cmd_wrap_S_dtbo in scripts/Makefile.dtbs 1992 */ 1993 extern uint8_t __dtbo_testcases_begin[]; 1994 extern uint8_t __dtbo_testcases_end[]; 1995 const int size = __dtbo_testcases_end - __dtbo_testcases_begin; 1996 int rc; 1997 void *ret; 1998 1999 if (!size) { 2000 pr_warn("%s: testcases is empty\n", __func__); 2001 return -ENODATA; 2002 } 2003 2004 /* creating copy */ 2005 unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL); 2006 if (!unittest_data) 2007 return -ENOMEM; 2008 2009 unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE); 2010 memcpy(unittest_data_align, __dtbo_testcases_begin, size); 2011 2012 ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node); 2013 if (!ret) { 2014 pr_warn("%s: unflatten testcases tree failed\n", __func__); 2015 kfree(unittest_data); 2016 return -ENODATA; 2017 } 2018 if (!unittest_data_node) { 2019 pr_warn("%s: testcases tree is empty\n", __func__); 2020 kfree(unittest_data); 2021 return -ENODATA; 2022 } 2023 2024 /* 2025 * This lock normally encloses of_resolve_phandles() 2026 */ 2027 of_overlay_mutex_lock(); 2028 2029 rc = of_resolve_phandles(unittest_data_node); 2030 if (rc) { 2031 pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc); 2032 of_overlay_mutex_unlock(); 2033 return -EINVAL; 2034 } 2035 2036 /* attach the sub-tree to live tree */ 2037 if (!of_root) { 2038 pr_warn("%s: no live tree to attach sub-tree\n", __func__); 2039 kfree(unittest_data); 2040 return -ENODEV; 2041 } 2042 2043 EXPECT_BEGIN(KERN_INFO, 2044 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 2045 2046 np = unittest_data_node->child; 2047 while (np) { 2048 struct device_node *next = np->sibling; 2049 2050 np->parent = of_root; 2051 /* this will clear OF_DETACHED in np and children */ 2052 attach_node_and_children(np); 2053 np = next; 2054 } 2055 2056 EXPECT_END(KERN_INFO, 2057 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 2058 2059 of_overlay_mutex_unlock(); 2060 2061 return 0; 2062 } 2063 2064 #ifdef CONFIG_OF_OVERLAY 2065 static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id); 2066 2067 static int unittest_probe(struct platform_device *pdev) 2068 { 2069 struct device *dev = &pdev->dev; 2070 struct device_node *np = dev->of_node; 2071 2072 if (np == NULL) { 2073 dev_err(dev, "No OF data for device\n"); 2074 return -EINVAL; 2075 2076 } 2077 2078 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2079 2080 of_platform_populate(np, NULL, NULL, &pdev->dev); 2081 2082 return 0; 2083 } 2084 2085 static void unittest_remove(struct platform_device *pdev) 2086 { 2087 struct device *dev = &pdev->dev; 2088 struct device_node *np = dev->of_node; 2089 2090 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2091 } 2092 2093 static const struct of_device_id unittest_match[] = { 2094 { .compatible = "unittest", }, 2095 {}, 2096 }; 2097 2098 static struct platform_driver unittest_driver = { 2099 .probe = unittest_probe, 2100 .remove = unittest_remove, 2101 .driver = { 2102 .name = "unittest", 2103 .of_match_table = unittest_match, 2104 }, 2105 }; 2106 2107 /* get the platform device instantiated at the path */ 2108 static struct platform_device *of_path_to_platform_device(const char *path) 2109 { 2110 struct device_node *np; 2111 struct platform_device *pdev; 2112 2113 np = of_find_node_by_path(path); 2114 if (np == NULL) 2115 return NULL; 2116 2117 pdev = of_find_device_by_node(np); 2118 of_node_put(np); 2119 2120 return pdev; 2121 } 2122 2123 /* find out if a platform device exists at that path */ 2124 static int of_path_platform_device_exists(const char *path) 2125 { 2126 struct platform_device *pdev; 2127 2128 pdev = of_path_to_platform_device(path); 2129 platform_device_put(pdev); 2130 return pdev != NULL; 2131 } 2132 2133 #ifdef CONFIG_OF_GPIO 2134 2135 struct unittest_gpio_dev { 2136 struct gpio_chip chip; 2137 }; 2138 2139 static int unittest_gpio_chip_request_count; 2140 static int unittest_gpio_probe_count; 2141 static int unittest_gpio_probe_pass_count; 2142 2143 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 2144 { 2145 unittest_gpio_chip_request_count++; 2146 2147 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 2148 unittest_gpio_chip_request_count); 2149 return 0; 2150 } 2151 2152 static int unittest_gpio_probe(struct platform_device *pdev) 2153 { 2154 struct unittest_gpio_dev *devptr; 2155 int ret; 2156 2157 unittest_gpio_probe_count++; 2158 2159 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 2160 if (!devptr) 2161 return -ENOMEM; 2162 2163 platform_set_drvdata(pdev, devptr); 2164 2165 devptr->chip.fwnode = dev_fwnode(&pdev->dev); 2166 devptr->chip.label = "of-unittest-gpio"; 2167 devptr->chip.base = -1; /* dynamic allocation */ 2168 devptr->chip.ngpio = 5; 2169 devptr->chip.request = unittest_gpio_chip_request; 2170 2171 ret = gpiochip_add_data(&devptr->chip, NULL); 2172 2173 unittest(!ret, 2174 "gpiochip_add_data() for node @%pfw failed, ret = %d\n", devptr->chip.fwnode, ret); 2175 2176 if (!ret) 2177 unittest_gpio_probe_pass_count++; 2178 return ret; 2179 } 2180 2181 static void unittest_gpio_remove(struct platform_device *pdev) 2182 { 2183 struct unittest_gpio_dev *devptr = platform_get_drvdata(pdev); 2184 struct device *dev = &pdev->dev; 2185 2186 dev_dbg(dev, "%s for node @%pfw\n", __func__, devptr->chip.fwnode); 2187 2188 if (devptr->chip.base != -1) 2189 gpiochip_remove(&devptr->chip); 2190 2191 kfree(devptr); 2192 } 2193 2194 static const struct of_device_id unittest_gpio_id[] = { 2195 { .compatible = "unittest-gpio", }, 2196 {} 2197 }; 2198 2199 static struct platform_driver unittest_gpio_driver = { 2200 .probe = unittest_gpio_probe, 2201 .remove = unittest_gpio_remove, 2202 .driver = { 2203 .name = "unittest-gpio", 2204 .of_match_table = unittest_gpio_id, 2205 }, 2206 }; 2207 2208 static void __init of_unittest_overlay_gpio(void) 2209 { 2210 int chip_request_count; 2211 int probe_pass_count; 2212 int ret; 2213 2214 /* 2215 * tests: apply overlays before registering driver 2216 * Similar to installing a driver as a module, the 2217 * driver is registered after applying the overlays. 2218 * 2219 * The overlays are applied by overlay_data_apply() 2220 * instead of of_unittest_apply_overlay() so that they 2221 * will not be tracked. Thus they will not be removed 2222 * by of_unittest_remove_tracked_overlays(). 2223 * 2224 * - apply overlay_gpio_01 2225 * - apply overlay_gpio_02a 2226 * - apply overlay_gpio_02b 2227 * - register driver 2228 * 2229 * register driver will result in 2230 * - probe and processing gpio hog for overlay_gpio_01 2231 * - probe for overlay_gpio_02a 2232 * - processing gpio for overlay_gpio_02b 2233 */ 2234 2235 probe_pass_count = unittest_gpio_probe_pass_count; 2236 chip_request_count = unittest_gpio_chip_request_count; 2237 2238 /* 2239 * overlay_gpio_01 contains gpio node and child gpio hog node 2240 * overlay_gpio_02a contains gpio node 2241 * overlay_gpio_02b contains child gpio hog node 2242 */ 2243 2244 unittest(overlay_data_apply("overlay_gpio_01", NULL), 2245 "Adding overlay 'overlay_gpio_01' failed\n"); 2246 2247 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 2248 "Adding overlay 'overlay_gpio_02a' failed\n"); 2249 2250 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 2251 "Adding overlay 'overlay_gpio_02b' failed\n"); 2252 2253 ret = platform_driver_register(&unittest_gpio_driver); 2254 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 2255 return; 2256 2257 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 2258 "unittest_gpio_probe() failed or not called\n"); 2259 2260 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 2261 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2262 unittest_gpio_chip_request_count - chip_request_count); 2263 2264 /* 2265 * tests: apply overlays after registering driver 2266 * 2267 * Similar to a driver built-in to the kernel, the 2268 * driver is registered before applying the overlays. 2269 * 2270 * overlay_gpio_03 contains gpio node and child gpio hog node 2271 * 2272 * - apply overlay_gpio_03 2273 * 2274 * apply overlay will result in 2275 * - probe and processing gpio hog. 2276 */ 2277 2278 probe_pass_count = unittest_gpio_probe_pass_count; 2279 chip_request_count = unittest_gpio_chip_request_count; 2280 2281 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 2282 2283 unittest(overlay_data_apply("overlay_gpio_03", NULL), 2284 "Adding overlay 'overlay_gpio_03' failed\n"); 2285 2286 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 2287 "unittest_gpio_probe() failed or not called\n"); 2288 2289 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 2290 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2291 unittest_gpio_chip_request_count - chip_request_count); 2292 2293 /* 2294 * overlay_gpio_04a contains gpio node 2295 * 2296 * - apply overlay_gpio_04a 2297 * 2298 * apply the overlay will result in 2299 * - probe for overlay_gpio_04a 2300 */ 2301 2302 probe_pass_count = unittest_gpio_probe_pass_count; 2303 chip_request_count = unittest_gpio_chip_request_count; 2304 2305 /* overlay_gpio_04a contains gpio node */ 2306 2307 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 2308 "Adding overlay 'overlay_gpio_04a' failed\n"); 2309 2310 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 2311 "unittest_gpio_probe() failed or not called\n"); 2312 2313 /* 2314 * overlay_gpio_04b contains child gpio hog node 2315 * 2316 * - apply overlay_gpio_04b 2317 * 2318 * apply the overlay will result in 2319 * - processing gpio for overlay_gpio_04b 2320 */ 2321 2322 /* overlay_gpio_04b contains child gpio hog node */ 2323 2324 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 2325 "Adding overlay 'overlay_gpio_04b' failed\n"); 2326 2327 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 2328 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2329 unittest_gpio_chip_request_count - chip_request_count); 2330 } 2331 2332 #else 2333 2334 static void __init of_unittest_overlay_gpio(void) 2335 { 2336 /* skip tests */ 2337 } 2338 2339 #endif 2340 2341 #if IS_BUILTIN(CONFIG_I2C) 2342 2343 /* get the i2c client device instantiated at the path */ 2344 static struct i2c_client *of_path_to_i2c_client(const char *path) 2345 { 2346 struct device_node *np; 2347 struct i2c_client *client; 2348 2349 np = of_find_node_by_path(path); 2350 if (np == NULL) 2351 return NULL; 2352 2353 client = of_find_i2c_device_by_node(np); 2354 of_node_put(np); 2355 2356 return client; 2357 } 2358 2359 /* find out if a i2c client device exists at that path */ 2360 static int of_path_i2c_client_exists(const char *path) 2361 { 2362 struct i2c_client *client; 2363 2364 client = of_path_to_i2c_client(path); 2365 if (client) 2366 put_device(&client->dev); 2367 return client != NULL; 2368 } 2369 #else 2370 static int of_path_i2c_client_exists(const char *path) 2371 { 2372 return 0; 2373 } 2374 #endif 2375 2376 enum overlay_type { 2377 PDEV_OVERLAY, 2378 I2C_OVERLAY 2379 }; 2380 2381 static int of_path_device_type_exists(const char *path, 2382 enum overlay_type ovtype) 2383 { 2384 switch (ovtype) { 2385 case PDEV_OVERLAY: 2386 return of_path_platform_device_exists(path); 2387 case I2C_OVERLAY: 2388 return of_path_i2c_client_exists(path); 2389 } 2390 return 0; 2391 } 2392 2393 static const char *unittest_path(int nr, enum overlay_type ovtype) 2394 { 2395 const char *base; 2396 static char buf[256]; 2397 2398 switch (ovtype) { 2399 case PDEV_OVERLAY: 2400 base = "/testcase-data/overlay-node/test-bus"; 2401 break; 2402 case I2C_OVERLAY: 2403 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 2404 break; 2405 default: 2406 buf[0] = '\0'; 2407 return buf; 2408 } 2409 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 2410 buf[sizeof(buf) - 1] = '\0'; 2411 return buf; 2412 } 2413 2414 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 2415 { 2416 const char *path; 2417 2418 path = unittest_path(unittest_nr, ovtype); 2419 2420 switch (ovtype) { 2421 case PDEV_OVERLAY: 2422 return of_path_platform_device_exists(path); 2423 case I2C_OVERLAY: 2424 return of_path_i2c_client_exists(path); 2425 } 2426 return 0; 2427 } 2428 2429 static const char *overlay_name_from_nr(int nr) 2430 { 2431 static char buf[256]; 2432 2433 snprintf(buf, sizeof(buf) - 1, 2434 "overlay_%d", nr); 2435 buf[sizeof(buf) - 1] = '\0'; 2436 2437 return buf; 2438 } 2439 2440 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 2441 2442 #define MAX_TRACK_OVCS_IDS 256 2443 2444 static int track_ovcs_id[MAX_TRACK_OVCS_IDS]; 2445 static int track_ovcs_id_overlay_nr[MAX_TRACK_OVCS_IDS]; 2446 static int track_ovcs_id_cnt; 2447 2448 static void of_unittest_track_overlay(int ovcs_id, int overlay_nr) 2449 { 2450 if (WARN_ON(track_ovcs_id_cnt >= MAX_TRACK_OVCS_IDS)) 2451 return; 2452 2453 track_ovcs_id[track_ovcs_id_cnt] = ovcs_id; 2454 track_ovcs_id_overlay_nr[track_ovcs_id_cnt] = overlay_nr; 2455 track_ovcs_id_cnt++; 2456 } 2457 2458 static void of_unittest_untrack_overlay(int ovcs_id) 2459 { 2460 if (WARN_ON(track_ovcs_id_cnt < 1)) 2461 return; 2462 2463 track_ovcs_id_cnt--; 2464 2465 /* If out of synch then test is broken. Do not try to recover. */ 2466 WARN_ON(track_ovcs_id[track_ovcs_id_cnt] != ovcs_id); 2467 } 2468 2469 static void of_unittest_remove_tracked_overlays(void) 2470 { 2471 int ret, ovcs_id, overlay_nr, save_ovcs_id; 2472 const char *overlay_name; 2473 2474 while (track_ovcs_id_cnt > 0) { 2475 2476 ovcs_id = track_ovcs_id[track_ovcs_id_cnt - 1]; 2477 overlay_nr = track_ovcs_id_overlay_nr[track_ovcs_id_cnt - 1]; 2478 save_ovcs_id = ovcs_id; 2479 ret = of_overlay_remove(&ovcs_id); 2480 if (ret == -ENODEV) { 2481 overlay_name = overlay_name_from_nr(overlay_nr); 2482 pr_warn("%s: of_overlay_remove() for overlay \"%s\" failed, ret = %d\n", 2483 __func__, overlay_name, ret); 2484 } 2485 of_unittest_untrack_overlay(save_ovcs_id); 2486 } 2487 2488 } 2489 2490 static int __init of_unittest_apply_overlay(int overlay_nr, int *ovcs_id) 2491 { 2492 /* 2493 * The overlay will be tracked, thus it will be removed 2494 * by of_unittest_remove_tracked_overlays(). 2495 */ 2496 2497 const char *overlay_name; 2498 2499 overlay_name = overlay_name_from_nr(overlay_nr); 2500 2501 if (!overlay_data_apply(overlay_name, ovcs_id)) { 2502 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2503 return -EFAULT; 2504 } 2505 of_unittest_track_overlay(*ovcs_id, overlay_nr); 2506 2507 return 0; 2508 } 2509 2510 static int __init __of_unittest_apply_overlay_check(int overlay_nr, 2511 int unittest_nr, int before, int after, 2512 enum overlay_type ovtype) 2513 { 2514 int ret, ovcs_id; 2515 2516 /* unittest device must be in before state */ 2517 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2518 unittest(0, "%s with device @\"%s\" %s\n", 2519 overlay_name_from_nr(overlay_nr), 2520 unittest_path(unittest_nr, ovtype), 2521 !before ? "enabled" : "disabled"); 2522 return -EINVAL; 2523 } 2524 2525 /* apply the overlay */ 2526 ovcs_id = 0; 2527 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2528 if (ret != 0) { 2529 /* of_unittest_apply_overlay already called unittest() */ 2530 return ret; 2531 } 2532 2533 /* unittest device must be in after state */ 2534 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2535 unittest(0, "%s with device @\"%s\" %s\n", 2536 overlay_name_from_nr(overlay_nr), 2537 unittest_path(unittest_nr, ovtype), 2538 !after ? "enabled" : "disabled"); 2539 return -EINVAL; 2540 } 2541 2542 return ovcs_id; 2543 } 2544 2545 /* apply an overlay while checking before and after states */ 2546 static int __init of_unittest_apply_overlay_check(int overlay_nr, 2547 int unittest_nr, int before, int after, 2548 enum overlay_type ovtype) 2549 { 2550 int ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, 2551 unittest_nr, before, after, ovtype); 2552 if (ovcs_id < 0) 2553 return ovcs_id; 2554 2555 return 0; 2556 } 2557 2558 /* apply an overlay and then revert it while checking before, after states */ 2559 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 2560 int unittest_nr, int before, int after, 2561 enum overlay_type ovtype) 2562 { 2563 int ret, ovcs_id, save_ovcs_id; 2564 2565 ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, unittest_nr, 2566 before, after, ovtype); 2567 if (ovcs_id < 0) 2568 return ovcs_id; 2569 2570 /* remove the overlay */ 2571 save_ovcs_id = ovcs_id; 2572 ret = of_overlay_remove(&ovcs_id); 2573 if (ret != 0) { 2574 unittest(0, "%s failed to be destroyed @\"%s\"\n", 2575 overlay_name_from_nr(overlay_nr), 2576 unittest_path(unittest_nr, ovtype)); 2577 return ret; 2578 } 2579 of_unittest_untrack_overlay(save_ovcs_id); 2580 2581 /* unittest device must be again in before state */ 2582 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2583 unittest(0, "%s with device @\"%s\" %s\n", 2584 overlay_name_from_nr(overlay_nr), 2585 unittest_path(unittest_nr, ovtype), 2586 !before ? "enabled" : "disabled"); 2587 return -EINVAL; 2588 } 2589 2590 return 0; 2591 } 2592 2593 /* test activation of device */ 2594 static void __init of_unittest_overlay_0(void) 2595 { 2596 int ret; 2597 2598 EXPECT_BEGIN(KERN_INFO, 2599 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2600 2601 /* device should enable */ 2602 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); 2603 2604 EXPECT_END(KERN_INFO, 2605 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2606 2607 if (ret) 2608 return; 2609 2610 unittest(1, "overlay test %d passed\n", 0); 2611 } 2612 2613 /* test deactivation of device */ 2614 static void __init of_unittest_overlay_1(void) 2615 { 2616 int ret; 2617 2618 EXPECT_BEGIN(KERN_INFO, 2619 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2620 2621 /* device should disable */ 2622 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2623 2624 EXPECT_END(KERN_INFO, 2625 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2626 2627 if (ret) 2628 return; 2629 2630 unittest(1, "overlay test %d passed\n", 1); 2631 2632 } 2633 2634 /* test activation of device */ 2635 static void __init of_unittest_overlay_2(void) 2636 { 2637 int ret; 2638 2639 EXPECT_BEGIN(KERN_INFO, 2640 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2641 2642 /* device should enable */ 2643 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2644 2645 EXPECT_END(KERN_INFO, 2646 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2647 2648 if (ret) 2649 return; 2650 unittest(1, "overlay test %d passed\n", 2); 2651 } 2652 2653 /* test deactivation of device */ 2654 static void __init of_unittest_overlay_3(void) 2655 { 2656 int ret; 2657 2658 EXPECT_BEGIN(KERN_INFO, 2659 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2660 2661 /* device should disable */ 2662 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2663 2664 EXPECT_END(KERN_INFO, 2665 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2666 2667 if (ret) 2668 return; 2669 2670 unittest(1, "overlay test %d passed\n", 3); 2671 } 2672 2673 /* test activation of a full device node */ 2674 static void __init of_unittest_overlay_4(void) 2675 { 2676 /* device should disable */ 2677 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2678 return; 2679 2680 unittest(1, "overlay test %d passed\n", 4); 2681 } 2682 2683 /* test overlay apply/revert sequence */ 2684 static void __init of_unittest_overlay_5(void) 2685 { 2686 int ret; 2687 2688 EXPECT_BEGIN(KERN_INFO, 2689 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2690 2691 /* device should disable */ 2692 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2693 2694 EXPECT_END(KERN_INFO, 2695 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2696 2697 if (ret) 2698 return; 2699 2700 unittest(1, "overlay test %d passed\n", 5); 2701 } 2702 2703 /* test overlay application in sequence */ 2704 static void __init of_unittest_overlay_6(void) 2705 { 2706 int i, save_ovcs_id[2], ovcs_id; 2707 int overlay_nr = 6, unittest_nr = 6; 2708 int before = 0, after = 1; 2709 const char *overlay_name; 2710 2711 int ret; 2712 2713 /* unittest device must be in before state */ 2714 for (i = 0; i < 2; i++) { 2715 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2716 != before) { 2717 unittest(0, "%s with device @\"%s\" %s\n", 2718 overlay_name_from_nr(overlay_nr + i), 2719 unittest_path(unittest_nr + i, 2720 PDEV_OVERLAY), 2721 !before ? "enabled" : "disabled"); 2722 return; 2723 } 2724 } 2725 2726 /* apply the overlays */ 2727 2728 EXPECT_BEGIN(KERN_INFO, 2729 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2730 2731 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2732 2733 ret = overlay_data_apply(overlay_name, &ovcs_id); 2734 2735 if (!ret) { 2736 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2737 return; 2738 } 2739 save_ovcs_id[0] = ovcs_id; 2740 of_unittest_track_overlay(ovcs_id, overlay_nr + 0); 2741 2742 EXPECT_END(KERN_INFO, 2743 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2744 2745 EXPECT_BEGIN(KERN_INFO, 2746 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2747 2748 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2749 2750 ret = overlay_data_apply(overlay_name, &ovcs_id); 2751 2752 if (!ret) { 2753 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2754 return; 2755 } 2756 save_ovcs_id[1] = ovcs_id; 2757 of_unittest_track_overlay(ovcs_id, overlay_nr + 1); 2758 2759 EXPECT_END(KERN_INFO, 2760 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2761 2762 2763 for (i = 0; i < 2; i++) { 2764 /* unittest device must be in after state */ 2765 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2766 != after) { 2767 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2768 overlay_name_from_nr(overlay_nr + i), 2769 unittest_path(unittest_nr + i, 2770 PDEV_OVERLAY), 2771 !after ? "enabled" : "disabled"); 2772 return; 2773 } 2774 } 2775 2776 for (i = 1; i >= 0; i--) { 2777 ovcs_id = save_ovcs_id[i]; 2778 if (of_overlay_remove(&ovcs_id)) { 2779 unittest(0, "%s failed destroy @\"%s\"\n", 2780 overlay_name_from_nr(overlay_nr + i), 2781 unittest_path(unittest_nr + i, 2782 PDEV_OVERLAY)); 2783 return; 2784 } 2785 of_unittest_untrack_overlay(save_ovcs_id[i]); 2786 } 2787 2788 for (i = 0; i < 2; i++) { 2789 /* unittest device must be again in before state */ 2790 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2791 != before) { 2792 unittest(0, "%s with device @\"%s\" %s\n", 2793 overlay_name_from_nr(overlay_nr + i), 2794 unittest_path(unittest_nr + i, 2795 PDEV_OVERLAY), 2796 !before ? "enabled" : "disabled"); 2797 return; 2798 } 2799 } 2800 2801 unittest(1, "overlay test %d passed\n", 6); 2802 2803 } 2804 2805 /* test overlay application in sequence */ 2806 static void __init of_unittest_overlay_8(void) 2807 { 2808 int i, save_ovcs_id[2], ovcs_id; 2809 int overlay_nr = 8, unittest_nr = 8; 2810 const char *overlay_name; 2811 int ret; 2812 2813 /* we don't care about device state in this test */ 2814 2815 EXPECT_BEGIN(KERN_INFO, 2816 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2817 2818 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2819 2820 ret = overlay_data_apply(overlay_name, &ovcs_id); 2821 if (!ret) 2822 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2823 2824 EXPECT_END(KERN_INFO, 2825 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2826 2827 if (!ret) 2828 return; 2829 2830 save_ovcs_id[0] = ovcs_id; 2831 of_unittest_track_overlay(ovcs_id, overlay_nr + 0); 2832 2833 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2834 2835 EXPECT_BEGIN(KERN_INFO, 2836 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2837 2838 /* apply the overlays */ 2839 ret = overlay_data_apply(overlay_name, &ovcs_id); 2840 2841 EXPECT_END(KERN_INFO, 2842 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2843 2844 if (!ret) { 2845 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2846 return; 2847 } 2848 2849 save_ovcs_id[1] = ovcs_id; 2850 of_unittest_track_overlay(ovcs_id, overlay_nr + 1); 2851 2852 /* now try to remove first overlay (it should fail) */ 2853 ovcs_id = save_ovcs_id[0]; 2854 2855 EXPECT_BEGIN(KERN_INFO, 2856 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2857 2858 EXPECT_BEGIN(KERN_INFO, 2859 "OF: overlay: overlay #6 is not topmost"); 2860 2861 ret = of_overlay_remove(&ovcs_id); 2862 2863 EXPECT_END(KERN_INFO, 2864 "OF: overlay: overlay #6 is not topmost"); 2865 2866 EXPECT_END(KERN_INFO, 2867 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2868 2869 if (!ret) { 2870 /* 2871 * Should never get here. If we do, expect a lot of 2872 * subsequent tracking and overlay removal related errors. 2873 */ 2874 unittest(0, "%s was destroyed @\"%s\"\n", 2875 overlay_name_from_nr(overlay_nr + 0), 2876 unittest_path(unittest_nr, 2877 PDEV_OVERLAY)); 2878 return; 2879 } 2880 2881 /* removing them in order should work */ 2882 for (i = 1; i >= 0; i--) { 2883 ovcs_id = save_ovcs_id[i]; 2884 if (of_overlay_remove(&ovcs_id)) { 2885 unittest(0, "%s not destroyed @\"%s\"\n", 2886 overlay_name_from_nr(overlay_nr + i), 2887 unittest_path(unittest_nr, 2888 PDEV_OVERLAY)); 2889 return; 2890 } 2891 of_unittest_untrack_overlay(save_ovcs_id[i]); 2892 } 2893 2894 unittest(1, "overlay test %d passed\n", 8); 2895 } 2896 2897 /* test insertion of a bus with parent devices */ 2898 static void __init of_unittest_overlay_10(void) 2899 { 2900 int ret; 2901 char *child_path; 2902 2903 /* device should disable */ 2904 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2905 2906 if (unittest(ret == 0, 2907 "overlay test %d failed; overlay application\n", 10)) 2908 return; 2909 2910 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2911 unittest_path(10, PDEV_OVERLAY)); 2912 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2913 return; 2914 2915 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2916 kfree(child_path); 2917 2918 unittest(ret, "overlay test %d failed; no child device\n", 10); 2919 } 2920 2921 /* test insertion of a bus with parent devices (and revert) */ 2922 static void __init of_unittest_overlay_11(void) 2923 { 2924 int ret; 2925 2926 /* device should disable */ 2927 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2928 PDEV_OVERLAY); 2929 2930 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2931 } 2932 2933 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2934 2935 struct unittest_i2c_bus_data { 2936 struct platform_device *pdev; 2937 struct i2c_adapter adap; 2938 }; 2939 2940 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2941 struct i2c_msg *msgs, int num) 2942 { 2943 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2944 2945 (void)std; 2946 2947 return num; 2948 } 2949 2950 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2951 { 2952 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2953 } 2954 2955 static const struct i2c_algorithm unittest_i2c_algo = { 2956 .master_xfer = unittest_i2c_master_xfer, 2957 .functionality = unittest_i2c_functionality, 2958 }; 2959 2960 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2961 { 2962 struct device *dev = &pdev->dev; 2963 struct device_node *np = dev->of_node; 2964 struct unittest_i2c_bus_data *std; 2965 struct i2c_adapter *adap; 2966 int ret; 2967 2968 if (np == NULL) { 2969 dev_err(dev, "No OF data for device\n"); 2970 return -EINVAL; 2971 2972 } 2973 2974 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2975 2976 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2977 if (!std) 2978 return -ENOMEM; 2979 2980 /* link them together */ 2981 std->pdev = pdev; 2982 platform_set_drvdata(pdev, std); 2983 2984 adap = &std->adap; 2985 i2c_set_adapdata(adap, std); 2986 adap->nr = -1; 2987 strscpy(adap->name, pdev->name, sizeof(adap->name)); 2988 adap->class = I2C_CLASS_DEPRECATED; 2989 adap->algo = &unittest_i2c_algo; 2990 adap->dev.parent = dev; 2991 adap->dev.of_node = dev->of_node; 2992 adap->timeout = 5 * HZ; 2993 adap->retries = 3; 2994 2995 ret = i2c_add_numbered_adapter(adap); 2996 if (ret != 0) { 2997 dev_err(dev, "Failed to add I2C adapter\n"); 2998 return ret; 2999 } 3000 3001 return 0; 3002 } 3003 3004 static void unittest_i2c_bus_remove(struct platform_device *pdev) 3005 { 3006 struct device *dev = &pdev->dev; 3007 struct device_node *np = dev->of_node; 3008 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 3009 3010 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3011 i2c_del_adapter(&std->adap); 3012 } 3013 3014 static const struct of_device_id unittest_i2c_bus_match[] = { 3015 { .compatible = "unittest-i2c-bus", }, 3016 {}, 3017 }; 3018 3019 static struct platform_driver unittest_i2c_bus_driver = { 3020 .probe = unittest_i2c_bus_probe, 3021 .remove = unittest_i2c_bus_remove, 3022 .driver = { 3023 .name = "unittest-i2c-bus", 3024 .of_match_table = unittest_i2c_bus_match, 3025 }, 3026 }; 3027 3028 static int unittest_i2c_dev_probe(struct i2c_client *client) 3029 { 3030 struct device *dev = &client->dev; 3031 struct device_node *np = client->dev.of_node; 3032 3033 if (!np) { 3034 dev_err(dev, "No OF node\n"); 3035 return -EINVAL; 3036 } 3037 3038 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3039 3040 return 0; 3041 }; 3042 3043 static void unittest_i2c_dev_remove(struct i2c_client *client) 3044 { 3045 struct device *dev = &client->dev; 3046 struct device_node *np = client->dev.of_node; 3047 3048 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3049 } 3050 3051 static const struct i2c_device_id unittest_i2c_dev_id[] = { 3052 { .name = "unittest-i2c-dev" }, 3053 { } 3054 }; 3055 3056 static struct i2c_driver unittest_i2c_dev_driver = { 3057 .driver = { 3058 .name = "unittest-i2c-dev", 3059 }, 3060 .probe = unittest_i2c_dev_probe, 3061 .remove = unittest_i2c_dev_remove, 3062 .id_table = unittest_i2c_dev_id, 3063 }; 3064 3065 #if IS_BUILTIN(CONFIG_I2C_MUX) 3066 3067 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 3068 { 3069 return 0; 3070 } 3071 3072 static int unittest_i2c_mux_probe(struct i2c_client *client) 3073 { 3074 int i, nchans; 3075 struct device *dev = &client->dev; 3076 struct i2c_adapter *adap = client->adapter; 3077 struct device_node *np = client->dev.of_node, *child; 3078 struct i2c_mux_core *muxc; 3079 u32 reg, max_reg; 3080 3081 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3082 3083 if (!np) { 3084 dev_err(dev, "No OF node\n"); 3085 return -EINVAL; 3086 } 3087 3088 max_reg = (u32)-1; 3089 for_each_child_of_node(np, child) { 3090 if (of_property_read_u32(child, "reg", ®)) 3091 continue; 3092 if (max_reg == (u32)-1 || reg > max_reg) 3093 max_reg = reg; 3094 } 3095 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 3096 if (nchans == 0) { 3097 dev_err(dev, "No channels\n"); 3098 return -EINVAL; 3099 } 3100 3101 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 3102 unittest_i2c_mux_select_chan, NULL); 3103 if (!muxc) 3104 return -ENOMEM; 3105 for (i = 0; i < nchans; i++) { 3106 if (i2c_mux_add_adapter(muxc, 0, i)) { 3107 dev_err(dev, "Failed to register mux #%d\n", i); 3108 i2c_mux_del_adapters(muxc); 3109 return -ENODEV; 3110 } 3111 } 3112 3113 i2c_set_clientdata(client, muxc); 3114 3115 return 0; 3116 }; 3117 3118 static void unittest_i2c_mux_remove(struct i2c_client *client) 3119 { 3120 struct device *dev = &client->dev; 3121 struct device_node *np = client->dev.of_node; 3122 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 3123 3124 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3125 i2c_mux_del_adapters(muxc); 3126 } 3127 3128 static const struct i2c_device_id unittest_i2c_mux_id[] = { 3129 { .name = "unittest-i2c-mux" }, 3130 { } 3131 }; 3132 3133 static struct i2c_driver unittest_i2c_mux_driver = { 3134 .driver = { 3135 .name = "unittest-i2c-mux", 3136 }, 3137 .probe = unittest_i2c_mux_probe, 3138 .remove = unittest_i2c_mux_remove, 3139 .id_table = unittest_i2c_mux_id, 3140 }; 3141 3142 #endif 3143 3144 static int of_unittest_overlay_i2c_init(void) 3145 { 3146 int ret; 3147 3148 ret = i2c_add_driver(&unittest_i2c_dev_driver); 3149 if (unittest(ret == 0, 3150 "could not register unittest i2c device driver\n")) 3151 return ret; 3152 3153 ret = platform_driver_register(&unittest_i2c_bus_driver); 3154 3155 if (unittest(ret == 0, 3156 "could not register unittest i2c bus driver\n")) 3157 return ret; 3158 3159 #if IS_BUILTIN(CONFIG_I2C_MUX) 3160 3161 EXPECT_BEGIN(KERN_INFO, 3162 "i2c i2c-1: Added multiplexed i2c bus 2"); 3163 3164 ret = i2c_add_driver(&unittest_i2c_mux_driver); 3165 3166 EXPECT_END(KERN_INFO, 3167 "i2c i2c-1: Added multiplexed i2c bus 2"); 3168 3169 if (unittest(ret == 0, 3170 "could not register unittest i2c mux driver\n")) 3171 return ret; 3172 #endif 3173 3174 return 0; 3175 } 3176 3177 static void of_unittest_overlay_i2c_cleanup(void) 3178 { 3179 #if IS_BUILTIN(CONFIG_I2C_MUX) 3180 i2c_del_driver(&unittest_i2c_mux_driver); 3181 #endif 3182 platform_driver_unregister(&unittest_i2c_bus_driver); 3183 i2c_del_driver(&unittest_i2c_dev_driver); 3184 } 3185 3186 static void __init of_unittest_overlay_i2c_12(void) 3187 { 3188 int ret; 3189 3190 /* device should enable */ 3191 EXPECT_BEGIN(KERN_INFO, 3192 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 3193 3194 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 3195 3196 EXPECT_END(KERN_INFO, 3197 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 3198 3199 if (ret) 3200 return; 3201 3202 unittest(1, "overlay test %d passed\n", 12); 3203 } 3204 3205 /* test deactivation of device */ 3206 static void __init of_unittest_overlay_i2c_13(void) 3207 { 3208 int ret; 3209 3210 EXPECT_BEGIN(KERN_INFO, 3211 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 3212 3213 /* device should disable */ 3214 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 3215 3216 EXPECT_END(KERN_INFO, 3217 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 3218 3219 if (ret) 3220 return; 3221 3222 unittest(1, "overlay test %d passed\n", 13); 3223 } 3224 3225 /* just check for i2c mux existence */ 3226 static void of_unittest_overlay_i2c_14(void) 3227 { 3228 } 3229 3230 static void __init of_unittest_overlay_i2c_15(void) 3231 { 3232 int ret; 3233 3234 /* device should enable */ 3235 EXPECT_BEGIN(KERN_INFO, 3236 "i2c i2c-1: Added multiplexed i2c bus 3"); 3237 3238 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 3239 3240 EXPECT_END(KERN_INFO, 3241 "i2c i2c-1: Added multiplexed i2c bus 3"); 3242 3243 if (ret) 3244 return; 3245 3246 unittest(1, "overlay test %d passed\n", 15); 3247 } 3248 3249 #else 3250 3251 static inline void of_unittest_overlay_i2c_14(void) { } 3252 static inline void of_unittest_overlay_i2c_15(void) { } 3253 3254 #endif 3255 3256 static int of_notify(struct notifier_block *nb, unsigned long action, 3257 void *arg) 3258 { 3259 struct of_overlay_notify_data *nd = arg; 3260 struct device_node *found; 3261 int ret; 3262 3263 /* 3264 * For overlay_16 .. overlay_19, check that returning an error 3265 * works for each of the actions by setting an arbitrary return 3266 * error number that matches the test number. e.g. for unittest16, 3267 * ret = -EBUSY which is -16. 3268 * 3269 * OVERLAY_INFO() for the overlays is declared to expect the same 3270 * error number, so overlay_data_apply() will return no error. 3271 * 3272 * overlay_20 will return NOTIFY_DONE 3273 */ 3274 3275 ret = 0; 3276 of_node_get(nd->overlay); 3277 3278 switch (action) { 3279 3280 case OF_OVERLAY_PRE_APPLY: 3281 found = of_find_node_by_name(nd->overlay, "test-unittest16"); 3282 if (found) { 3283 of_node_put(found); 3284 ret = -EBUSY; 3285 } 3286 break; 3287 3288 case OF_OVERLAY_POST_APPLY: 3289 found = of_find_node_by_name(nd->overlay, "test-unittest17"); 3290 if (found) { 3291 of_node_put(found); 3292 ret = -EEXIST; 3293 } 3294 break; 3295 3296 case OF_OVERLAY_PRE_REMOVE: 3297 found = of_find_node_by_name(nd->overlay, "test-unittest18"); 3298 if (found) { 3299 of_node_put(found); 3300 ret = -EXDEV; 3301 } 3302 break; 3303 3304 case OF_OVERLAY_POST_REMOVE: 3305 found = of_find_node_by_name(nd->overlay, "test-unittest19"); 3306 if (found) { 3307 of_node_put(found); 3308 ret = -ENODEV; 3309 } 3310 break; 3311 3312 default: /* should not happen */ 3313 of_node_put(nd->overlay); 3314 ret = -EINVAL; 3315 break; 3316 } 3317 3318 if (ret) 3319 return notifier_from_errno(ret); 3320 3321 return NOTIFY_DONE; 3322 } 3323 3324 static struct notifier_block of_nb = { 3325 .notifier_call = of_notify, 3326 }; 3327 3328 static void __init of_unittest_overlay_notify(void) 3329 { 3330 int ovcs_id; 3331 int ret; 3332 3333 ret = of_overlay_notifier_register(&of_nb); 3334 unittest(!ret, 3335 "of_overlay_notifier_register() failed, ret = %d\n", ret); 3336 if (ret) 3337 return; 3338 3339 /* 3340 * The overlays are applied by overlay_data_apply() 3341 * instead of of_unittest_apply_overlay() so that they 3342 * will not be tracked. Thus they will not be removed 3343 * by of_unittest_remove_tracked_overlays(). 3344 * 3345 * Applying overlays 16 - 19 will each trigger an error for a 3346 * different action in of_notify(). 3347 * 3348 * Applying overlay 20 will not trigger any error in of_notify(). 3349 */ 3350 3351 /* --- overlay 16 --- */ 3352 3353 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus"); 3354 3355 unittest(overlay_data_apply("overlay_16", &ovcs_id), 3356 "test OF_OVERLAY_PRE_APPLY notify injected error\n"); 3357 3358 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus"); 3359 3360 unittest(ovcs_id, "ovcs_id not created for overlay_16\n"); 3361 3362 /* --- overlay 17 --- */ 3363 3364 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus"); 3365 3366 unittest(overlay_data_apply("overlay_17", &ovcs_id), 3367 "test OF_OVERLAY_POST_APPLY notify injected error\n"); 3368 3369 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus"); 3370 3371 unittest(ovcs_id, "ovcs_id not created for overlay_17\n"); 3372 3373 /* --- overlay 18 --- */ 3374 3375 unittest(overlay_data_apply("overlay_18", &ovcs_id), 3376 "OF_OVERLAY_PRE_REMOVE notify injected error\n"); 3377 3378 unittest(ovcs_id, "ovcs_id not created for overlay_18\n"); 3379 3380 if (ovcs_id) { 3381 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus"); 3382 3383 ret = of_overlay_remove(&ovcs_id); 3384 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus"); 3385 if (ret == -EXDEV) { 3386 /* 3387 * change set ovcs_id should still exist 3388 */ 3389 unittest(1, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE\n"); 3390 } else { 3391 unittest(0, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE not returned\n"); 3392 } 3393 } else { 3394 unittest(1, "ovcs_id not created for overlay_18\n"); 3395 } 3396 3397 unittest(ovcs_id, "ovcs_id removed for overlay_18\n"); 3398 3399 /* --- overlay 19 --- */ 3400 3401 unittest(overlay_data_apply("overlay_19", &ovcs_id), 3402 "OF_OVERLAY_POST_REMOVE notify injected error\n"); 3403 3404 unittest(ovcs_id, "ovcs_id not created for overlay_19\n"); 3405 3406 if (ovcs_id) { 3407 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus"); 3408 ret = of_overlay_remove(&ovcs_id); 3409 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus"); 3410 if (ret == -ENODEV) 3411 unittest(1, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE\n"); 3412 else 3413 unittest(0, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE not returned\n"); 3414 } else { 3415 unittest(1, "ovcs_id removed for overlay_19\n"); 3416 } 3417 3418 unittest(!ovcs_id, "changeset ovcs_id = %d not removed for overlay_19\n", 3419 ovcs_id); 3420 3421 /* --- overlay 20 --- */ 3422 3423 unittest(overlay_data_apply("overlay_20", &ovcs_id), 3424 "overlay notify no injected error\n"); 3425 3426 if (ovcs_id) { 3427 ret = of_overlay_remove(&ovcs_id); 3428 if (ret) 3429 unittest(1, "overlay_20 failed to be destroyed, ret = %d\n", 3430 ret); 3431 } else { 3432 unittest(1, "ovcs_id not created for overlay_20\n"); 3433 } 3434 3435 unittest(!of_overlay_notifier_unregister(&of_nb), 3436 "of_overlay_notifier_unregister() failed, ret = %d\n", ret); 3437 } 3438 3439 static void __init of_unittest_overlay(void) 3440 { 3441 struct device_node *bus_np = NULL; 3442 unsigned int i; 3443 3444 if (platform_driver_register(&unittest_driver)) { 3445 unittest(0, "could not register unittest driver\n"); 3446 goto out; 3447 } 3448 3449 bus_np = of_find_node_by_path(bus_path); 3450 if (bus_np == NULL) { 3451 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 3452 goto out; 3453 } 3454 3455 if (of_platform_default_populate(bus_np, NULL, NULL)) { 3456 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 3457 goto out; 3458 } 3459 3460 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 3461 unittest(0, "could not find unittest0 @ \"%s\"\n", 3462 unittest_path(100, PDEV_OVERLAY)); 3463 goto out; 3464 } 3465 3466 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 3467 unittest(0, "unittest1 @ \"%s\" should not exist\n", 3468 unittest_path(101, PDEV_OVERLAY)); 3469 goto out; 3470 } 3471 3472 unittest(1, "basic infrastructure of overlays passed"); 3473 3474 /* tests in sequence */ 3475 of_unittest_overlay_0(); 3476 of_unittest_overlay_1(); 3477 of_unittest_overlay_2(); 3478 of_unittest_overlay_3(); 3479 of_unittest_overlay_4(); 3480 for (i = 0; i < 3; i++) 3481 of_unittest_overlay_5(); 3482 of_unittest_overlay_6(); 3483 of_unittest_overlay_8(); 3484 3485 of_unittest_overlay_10(); 3486 of_unittest_overlay_11(); 3487 3488 #if IS_BUILTIN(CONFIG_I2C) 3489 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 3490 goto out; 3491 3492 of_unittest_overlay_i2c_12(); 3493 of_unittest_overlay_i2c_13(); 3494 of_unittest_overlay_i2c_14(); 3495 of_unittest_overlay_i2c_15(); 3496 3497 of_unittest_overlay_i2c_cleanup(); 3498 #endif 3499 3500 of_unittest_overlay_gpio(); 3501 3502 of_unittest_remove_tracked_overlays(); 3503 3504 of_unittest_overlay_notify(); 3505 3506 out: 3507 of_node_put(bus_np); 3508 } 3509 3510 #else 3511 static inline void __init of_unittest_overlay(void) { } 3512 #endif 3513 3514 static void __init of_unittest_lifecycle(void) 3515 { 3516 #ifdef CONFIG_OF_DYNAMIC 3517 unsigned int refcount; 3518 int found_refcount_one = 0; 3519 int put_count = 0; 3520 struct device_node *np; 3521 struct device_node *prev_sibling, *next_sibling; 3522 const char *refcount_path = "/testcase-data/refcount-node"; 3523 const char *refcount_parent_path = "/testcase-data"; 3524 3525 /* 3526 * Node lifecycle tests, non-dynamic node: 3527 * 3528 * - Decrementing refcount to zero via of_node_put() should cause the 3529 * attempt to free the node memory by of_node_release() to fail 3530 * because the node is not a dynamic node. 3531 * 3532 * - Decrementing refcount past zero should result in additional 3533 * errors reported. 3534 */ 3535 3536 np = of_find_node_by_path(refcount_path); 3537 unittest(np, "find refcount_path \"%s\"\n", refcount_path); 3538 if (np == NULL) 3539 goto out_skip_tests; 3540 3541 while (!found_refcount_one) { 3542 3543 if (put_count++ > 10) { 3544 unittest(0, "guardrail to avoid infinite loop\n"); 3545 goto out_skip_tests; 3546 } 3547 3548 refcount = kref_read(&np->kobj.kref); 3549 if (refcount == 1) 3550 found_refcount_one = 1; 3551 else 3552 of_node_put(np); 3553 } 3554 3555 EXPECT_BEGIN(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node"); 3556 3557 /* 3558 * refcount is now one, decrementing to zero will result in a call to 3559 * of_node_release() to free the node's memory, which should result 3560 * in an error 3561 */ 3562 unittest(1, "/testcase-data/refcount-node is one"); 3563 of_node_put(np); 3564 3565 EXPECT_END(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node"); 3566 3567 3568 /* 3569 * expect stack trace for subsequent of_node_put(): 3570 * __refcount_sub_and_test() calls: 3571 * refcount_warn_saturate(r, REFCOUNT_SUB_UAF) 3572 * 3573 * Not capturing entire WARN_ONCE() trace with EXPECT_*(), just 3574 * the first three lines, and the last line. 3575 */ 3576 EXPECT_BEGIN(KERN_INFO, "------------[ cut here ]------------"); 3577 EXPECT_BEGIN(KERN_INFO, "WARNING: <<all>>"); 3578 EXPECT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free."); 3579 EXPECT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---"); 3580 3581 /* refcount is now zero, this should fail */ 3582 unittest(1, "/testcase-data/refcount-node is zero"); 3583 of_node_put(np); 3584 3585 EXPECT_END(KERN_INFO, "---[ end trace <<int>> ]---"); 3586 EXPECT_END(KERN_INFO, "refcount_t: underflow; use-after-free."); 3587 EXPECT_END(KERN_INFO, "WARNING: <<all>>"); 3588 EXPECT_END(KERN_INFO, "------------[ cut here ]------------"); 3589 3590 /* 3591 * Q. do we expect to get yet another warning? 3592 * A. no, the WARNING is from WARN_ONCE() 3593 */ 3594 EXPECT_NOT_BEGIN(KERN_INFO, "------------[ cut here ]------------"); 3595 EXPECT_NOT_BEGIN(KERN_INFO, "WARNING: <<all>>"); 3596 EXPECT_NOT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free."); 3597 EXPECT_NOT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---"); 3598 3599 unittest(1, "/testcase-data/refcount-node is zero, second time"); 3600 of_node_put(np); 3601 3602 EXPECT_NOT_END(KERN_INFO, "---[ end trace <<int>> ]---"); 3603 EXPECT_NOT_END(KERN_INFO, "refcount_t: underflow; use-after-free."); 3604 EXPECT_NOT_END(KERN_INFO, "WARNING: <<all>>"); 3605 EXPECT_NOT_END(KERN_INFO, "------------[ cut here ]------------"); 3606 3607 /* 3608 * refcount of zero will trigger stack traces from any further 3609 * attempt to of_node_get() node "refcount-node". One example of 3610 * this is where of_unittest_check_node_linkage() will recursively 3611 * scan the tree, with 'for_each_child_of_node()' doing an 3612 * of_node_get() of the children of a node. 3613 * 3614 * Prevent the stack trace by removing node "refcount-node" from 3615 * its parent's child list. 3616 * 3617 * WARNING: EVIL, EVIL, EVIL: 3618 * 3619 * Directly manipulate the child list of node /testcase-data to 3620 * remove child refcount-node. This is ignoring all proper methods 3621 * of removing a child and will leak a small amount of memory. 3622 */ 3623 3624 np = of_find_node_by_path(refcount_parent_path); 3625 unittest(np, "find refcount_parent_path \"%s\"\n", refcount_parent_path); 3626 unittest(np, "ERROR: devicetree live tree left in a 'bad state' if test fail\n"); 3627 if (np == NULL) 3628 return; 3629 3630 prev_sibling = np->child; 3631 next_sibling = prev_sibling->sibling; 3632 if (!strcmp(prev_sibling->full_name, "refcount-node")) { 3633 np->child = next_sibling; 3634 next_sibling = next_sibling->sibling; 3635 } 3636 while (next_sibling) { 3637 if (!strcmp(next_sibling->full_name, "refcount-node")) 3638 prev_sibling->sibling = next_sibling->sibling; 3639 prev_sibling = next_sibling; 3640 next_sibling = next_sibling->sibling; 3641 } 3642 of_node_put(np); 3643 3644 return; 3645 3646 out_skip_tests: 3647 #endif 3648 unittest(0, "One or more lifecycle tests skipped\n"); 3649 } 3650 3651 #ifdef CONFIG_OF_OVERLAY 3652 3653 /* 3654 * __dtbo_##overlay_name##_begin[] and __dtbo_##overlay_name##_end[] are 3655 * created by cmd_wrap_S_dtbo in scripts/Makefile.dtbs 3656 */ 3657 3658 #define OVERLAY_INFO_EXTERN(overlay_name) \ 3659 extern uint8_t __dtbo_##overlay_name##_begin[]; \ 3660 extern uint8_t __dtbo_##overlay_name##_end[] 3661 3662 #define OVERLAY_INFO(overlay_name, expected, expected_remove) \ 3663 { .dtbo_begin = __dtbo_##overlay_name##_begin, \ 3664 .dtbo_end = __dtbo_##overlay_name##_end, \ 3665 .expected_result = expected, \ 3666 .expected_result_remove = expected_remove, \ 3667 .name = #overlay_name, \ 3668 } 3669 3670 struct overlay_info { 3671 uint8_t *dtbo_begin; 3672 uint8_t *dtbo_end; 3673 int expected_result; 3674 int expected_result_remove; /* if apply failed */ 3675 int ovcs_id; 3676 char *name; 3677 }; 3678 3679 OVERLAY_INFO_EXTERN(overlay_base); 3680 OVERLAY_INFO_EXTERN(overlay); 3681 OVERLAY_INFO_EXTERN(overlay_0); 3682 OVERLAY_INFO_EXTERN(overlay_1); 3683 OVERLAY_INFO_EXTERN(overlay_2); 3684 OVERLAY_INFO_EXTERN(overlay_3); 3685 OVERLAY_INFO_EXTERN(overlay_4); 3686 OVERLAY_INFO_EXTERN(overlay_5); 3687 OVERLAY_INFO_EXTERN(overlay_6); 3688 OVERLAY_INFO_EXTERN(overlay_7); 3689 OVERLAY_INFO_EXTERN(overlay_8); 3690 OVERLAY_INFO_EXTERN(overlay_9); 3691 OVERLAY_INFO_EXTERN(overlay_10); 3692 OVERLAY_INFO_EXTERN(overlay_11); 3693 OVERLAY_INFO_EXTERN(overlay_12); 3694 OVERLAY_INFO_EXTERN(overlay_13); 3695 OVERLAY_INFO_EXTERN(overlay_15); 3696 OVERLAY_INFO_EXTERN(overlay_16); 3697 OVERLAY_INFO_EXTERN(overlay_17); 3698 OVERLAY_INFO_EXTERN(overlay_18); 3699 OVERLAY_INFO_EXTERN(overlay_19); 3700 OVERLAY_INFO_EXTERN(overlay_20); 3701 OVERLAY_INFO_EXTERN(overlay_gpio_01); 3702 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 3703 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 3704 OVERLAY_INFO_EXTERN(overlay_gpio_03); 3705 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 3706 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 3707 OVERLAY_INFO_EXTERN(overlay_pci_node); 3708 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 3709 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 3710 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 3711 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 3712 OVERLAY_INFO_EXTERN(overlay_bad_unresolved); 3713 3714 /* entries found by name */ 3715 static struct overlay_info overlays[] = { 3716 OVERLAY_INFO(overlay_base, -9999, 0), 3717 OVERLAY_INFO(overlay, 0, 0), 3718 OVERLAY_INFO(overlay_0, 0, 0), 3719 OVERLAY_INFO(overlay_1, 0, 0), 3720 OVERLAY_INFO(overlay_2, 0, 0), 3721 OVERLAY_INFO(overlay_3, 0, 0), 3722 OVERLAY_INFO(overlay_4, 0, 0), 3723 OVERLAY_INFO(overlay_5, 0, 0), 3724 OVERLAY_INFO(overlay_6, 0, 0), 3725 OVERLAY_INFO(overlay_7, 0, 0), 3726 OVERLAY_INFO(overlay_8, 0, 0), 3727 OVERLAY_INFO(overlay_9, 0, 0), 3728 OVERLAY_INFO(overlay_10, 0, 0), 3729 OVERLAY_INFO(overlay_11, 0, 0), 3730 OVERLAY_INFO(overlay_12, 0, 0), 3731 OVERLAY_INFO(overlay_13, 0, 0), 3732 OVERLAY_INFO(overlay_15, 0, 0), 3733 OVERLAY_INFO(overlay_16, -EBUSY, 0), 3734 OVERLAY_INFO(overlay_17, -EEXIST, 0), 3735 OVERLAY_INFO(overlay_18, 0, 0), 3736 OVERLAY_INFO(overlay_19, 0, 0), 3737 OVERLAY_INFO(overlay_20, 0, 0), 3738 OVERLAY_INFO(overlay_gpio_01, 0, 0), 3739 OVERLAY_INFO(overlay_gpio_02a, 0, 0), 3740 OVERLAY_INFO(overlay_gpio_02b, 0, 0), 3741 OVERLAY_INFO(overlay_gpio_03, 0, 0), 3742 OVERLAY_INFO(overlay_gpio_04a, 0, 0), 3743 OVERLAY_INFO(overlay_gpio_04b, 0, 0), 3744 OVERLAY_INFO(overlay_pci_node, 0, 0), 3745 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL, -ENODEV), 3746 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL, -ENODEV), 3747 OVERLAY_INFO(overlay_bad_phandle, -EINVAL, 0), 3748 OVERLAY_INFO(overlay_bad_symbol, -EINVAL, -ENODEV), 3749 OVERLAY_INFO(overlay_bad_unresolved, -EINVAL, 0), 3750 /* end marker */ 3751 { } 3752 }; 3753 3754 static struct device_node *overlay_base_root; 3755 3756 static void * __init dt_alloc_memory(u64 size, u64 align) 3757 { 3758 return memblock_alloc_or_panic(size, align); 3759 } 3760 3761 /* 3762 * Create base device tree for the overlay unittest. 3763 * 3764 * This is called from very early boot code. 3765 * 3766 * Do as much as possible the same way as done in __unflatten_device_tree 3767 * and other early boot steps for the normal FDT so that the overlay base 3768 * unflattened tree will have the same characteristics as the real tree 3769 * (such as having memory allocated by the early allocator). The goal 3770 * is to test "the real thing" as much as possible, and test "test setup 3771 * code" as little as possible. 3772 * 3773 * Have to stop before resolving phandles, because that uses kmalloc. 3774 */ 3775 void __init unittest_unflatten_overlay_base(void) 3776 { 3777 struct overlay_info *info; 3778 u32 data_size; 3779 void *new_fdt; 3780 u32 size; 3781 int found = 0; 3782 const char *overlay_name = "overlay_base"; 3783 3784 for (info = overlays; info && info->name; info++) { 3785 if (!strcmp(overlay_name, info->name)) { 3786 found = 1; 3787 break; 3788 } 3789 } 3790 if (!found) { 3791 pr_err("no overlay data for %s\n", overlay_name); 3792 return; 3793 } 3794 3795 info = &overlays[0]; 3796 3797 if (info->expected_result != -9999) { 3798 pr_err("No dtb 'overlay_base' to attach\n"); 3799 return; 3800 } 3801 3802 data_size = info->dtbo_end - info->dtbo_begin; 3803 if (!data_size) { 3804 pr_err("No dtb 'overlay_base' to attach\n"); 3805 return; 3806 } 3807 3808 size = fdt_totalsize(info->dtbo_begin); 3809 if (size != data_size) { 3810 pr_err("dtb 'overlay_base' header totalsize != actual size"); 3811 return; 3812 } 3813 3814 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 3815 if (!new_fdt) { 3816 pr_err("alloc for dtb 'overlay_base' failed"); 3817 return; 3818 } 3819 3820 memcpy(new_fdt, info->dtbo_begin, size); 3821 3822 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 3823 dt_alloc_memory, true); 3824 } 3825 3826 /* 3827 * The purpose of of_unittest_overlay_data_add is to add an 3828 * overlay in the normal fashion. This is a test of the whole 3829 * picture, instead of testing individual elements. 3830 * 3831 * A secondary purpose is to be able to verify that the contents of 3832 * /proc/device-tree/ contains the updated structure and values from 3833 * the overlay. That must be verified separately in user space. 3834 * 3835 * Return 0 on unexpected error. 3836 */ 3837 static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id) 3838 { 3839 struct overlay_info *info; 3840 int passed = 1; 3841 int found = 0; 3842 int ret, ret2; 3843 u32 size; 3844 3845 for (info = overlays; info && info->name; info++) { 3846 if (!strcmp(overlay_name, info->name)) { 3847 found = 1; 3848 break; 3849 } 3850 } 3851 if (!found) { 3852 pr_err("no overlay data for %s\n", overlay_name); 3853 return 0; 3854 } 3855 3856 size = info->dtbo_end - info->dtbo_begin; 3857 if (!size) 3858 pr_err("no overlay data for %s\n", overlay_name); 3859 3860 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &info->ovcs_id, 3861 NULL); 3862 if (ovcs_id) 3863 *ovcs_id = info->ovcs_id; 3864 if (ret < 0) 3865 goto out; 3866 3867 pr_debug("%s applied\n", overlay_name); 3868 3869 out: 3870 if (ret != info->expected_result) { 3871 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 3872 info->expected_result, ret, overlay_name); 3873 passed = 0; 3874 } 3875 3876 if (ret < 0) { 3877 /* changeset may be partially applied */ 3878 ret2 = of_overlay_remove(&info->ovcs_id); 3879 if (ret2 != info->expected_result_remove) { 3880 pr_err("of_overlay_remove() expected %d, ret=%d, %s\n", 3881 info->expected_result_remove, ret2, 3882 overlay_name); 3883 passed = 0; 3884 } 3885 } 3886 3887 return passed; 3888 } 3889 3890 /* 3891 * The purpose of of_unittest_overlay_high_level is to add an overlay 3892 * in the normal fashion. This is a test of the whole picture, 3893 * instead of individual elements. 3894 * 3895 * The first part of the function is _not_ normal overlay usage; it is 3896 * finishing splicing the base overlay device tree into the live tree. 3897 */ 3898 static __init void of_unittest_overlay_high_level(void) 3899 { 3900 struct device_node *last_sibling; 3901 struct device_node *np; 3902 struct device_node *of_symbols; 3903 struct device_node *overlay_base_symbols; 3904 struct device_node **pprev; 3905 struct property *prop; 3906 int ret; 3907 3908 if (!overlay_base_root) { 3909 unittest(0, "overlay_base_root not initialized\n"); 3910 return; 3911 } 3912 3913 /* 3914 * Could not fixup phandles in unittest_unflatten_overlay_base() 3915 * because kmalloc() was not yet available. 3916 */ 3917 of_overlay_mutex_lock(); 3918 of_resolve_phandles(overlay_base_root); 3919 of_overlay_mutex_unlock(); 3920 3921 3922 /* 3923 * do not allow overlay_base to duplicate any node already in 3924 * tree, this greatly simplifies the code 3925 */ 3926 3927 /* 3928 * remove overlay_base_root node "__local_fixups", after 3929 * being used by of_resolve_phandles() 3930 */ 3931 pprev = &overlay_base_root->child; 3932 for (np = overlay_base_root->child; np; np = np->sibling) { 3933 if (of_node_name_eq(np, "__local_fixups__")) { 3934 *pprev = np->sibling; 3935 break; 3936 } 3937 pprev = &np->sibling; 3938 } 3939 3940 /* remove overlay_base_root node "__symbols__" if in live tree */ 3941 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3942 if (of_symbols) { 3943 /* will have to graft properties from node into live tree */ 3944 pprev = &overlay_base_root->child; 3945 for (np = overlay_base_root->child; np; np = np->sibling) { 3946 if (of_node_name_eq(np, "__symbols__")) { 3947 overlay_base_symbols = np; 3948 *pprev = np->sibling; 3949 break; 3950 } 3951 pprev = &np->sibling; 3952 } 3953 } 3954 3955 for_each_child_of_node(overlay_base_root, np) { 3956 struct device_node *base_child; 3957 for_each_child_of_node(of_root, base_child) { 3958 if (!strcmp(np->full_name, base_child->full_name)) { 3959 unittest(0, "illegal node name in overlay_base %pOFn", 3960 np); 3961 of_node_put(np); 3962 of_node_put(base_child); 3963 return; 3964 } 3965 } 3966 } 3967 3968 /* 3969 * overlay 'overlay_base' is not allowed to have root 3970 * properties, so only need to splice nodes into main device tree. 3971 * 3972 * root node of *overlay_base_root will not be freed, it is lost 3973 * memory. 3974 */ 3975 3976 for (np = overlay_base_root->child; np; np = np->sibling) 3977 np->parent = of_root; 3978 3979 mutex_lock(&of_mutex); 3980 3981 for (last_sibling = np = of_root->child; np; np = np->sibling) 3982 last_sibling = np; 3983 3984 if (last_sibling) 3985 last_sibling->sibling = overlay_base_root->child; 3986 else 3987 of_root->child = overlay_base_root->child; 3988 3989 for_each_of_allnodes_from(overlay_base_root, np) 3990 __of_attach_node_sysfs(np); 3991 3992 if (of_symbols) { 3993 struct property *new_prop; 3994 for_each_property_of_node(overlay_base_symbols, prop) { 3995 3996 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3997 if (!new_prop) { 3998 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 3999 prop->name); 4000 goto err_unlock; 4001 } 4002 if (__of_add_property(of_symbols, new_prop)) { 4003 __of_prop_free(new_prop); 4004 /* "name" auto-generated by unflatten */ 4005 if (!strcmp(prop->name, "name")) 4006 continue; 4007 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 4008 prop->name); 4009 goto err_unlock; 4010 } 4011 if (__of_add_property_sysfs(of_symbols, new_prop)) { 4012 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 4013 prop->name); 4014 goto err_unlock; 4015 } 4016 } 4017 } 4018 4019 mutex_unlock(&of_mutex); 4020 4021 4022 /* now do the normal overlay usage test */ 4023 4024 /* --- overlay --- */ 4025 4026 EXPECT_BEGIN(KERN_ERR, 4027 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 4028 EXPECT_BEGIN(KERN_ERR, 4029 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 4030 EXPECT_BEGIN(KERN_ERR, 4031 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 4032 EXPECT_BEGIN(KERN_ERR, 4033 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 4034 EXPECT_BEGIN(KERN_ERR, 4035 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 4036 EXPECT_BEGIN(KERN_ERR, 4037 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 4038 EXPECT_BEGIN(KERN_ERR, 4039 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 4040 EXPECT_BEGIN(KERN_ERR, 4041 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 4042 EXPECT_BEGIN(KERN_ERR, 4043 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 4044 EXPECT_BEGIN(KERN_ERR, 4045 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 4046 EXPECT_BEGIN(KERN_ERR, 4047 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 4048 4049 ret = overlay_data_apply("overlay", NULL); 4050 4051 EXPECT_END(KERN_ERR, 4052 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 4053 EXPECT_END(KERN_ERR, 4054 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 4055 EXPECT_END(KERN_ERR, 4056 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 4057 EXPECT_END(KERN_ERR, 4058 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 4059 EXPECT_END(KERN_ERR, 4060 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 4061 EXPECT_END(KERN_ERR, 4062 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 4063 EXPECT_END(KERN_ERR, 4064 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 4065 EXPECT_END(KERN_ERR, 4066 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 4067 EXPECT_END(KERN_ERR, 4068 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 4069 EXPECT_END(KERN_ERR, 4070 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 4071 EXPECT_END(KERN_ERR, 4072 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 4073 4074 unittest(ret, "Adding overlay 'overlay' failed\n"); 4075 4076 /* --- overlay_bad_add_dup_node --- */ 4077 4078 EXPECT_BEGIN(KERN_ERR, 4079 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 4080 EXPECT_BEGIN(KERN_ERR, 4081 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 4082 EXPECT_BEGIN(KERN_ERR, 4083 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name"); 4084 EXPECT_BEGIN(KERN_ERR, 4085 "OF: Error reverting changeset (-19)"); 4086 4087 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 4088 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 4089 4090 EXPECT_END(KERN_ERR, 4091 "OF: Error reverting changeset (-19)"); 4092 EXPECT_END(KERN_ERR, 4093 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name"); 4094 EXPECT_END(KERN_ERR, 4095 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 4096 EXPECT_END(KERN_ERR, 4097 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 4098 4099 /* --- overlay_bad_add_dup_prop --- */ 4100 4101 EXPECT_BEGIN(KERN_ERR, 4102 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 4103 EXPECT_BEGIN(KERN_ERR, 4104 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 4105 EXPECT_BEGIN(KERN_ERR, 4106 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 4107 EXPECT_BEGIN(KERN_ERR, 4108 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name"); 4109 EXPECT_BEGIN(KERN_ERR, 4110 "OF: Error reverting changeset (-19)"); 4111 4112 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 4113 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 4114 4115 EXPECT_END(KERN_ERR, 4116 "OF: Error reverting changeset (-19)"); 4117 EXPECT_END(KERN_ERR, 4118 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name"); 4119 EXPECT_END(KERN_ERR, 4120 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 4121 EXPECT_END(KERN_ERR, 4122 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 4123 EXPECT_END(KERN_ERR, 4124 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 4125 4126 /* --- overlay_bad_phandle --- */ 4127 4128 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 4129 "Adding overlay 'overlay_bad_phandle' failed\n"); 4130 4131 /* --- overlay_bad_symbol --- */ 4132 4133 EXPECT_BEGIN(KERN_ERR, 4134 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name"); 4135 EXPECT_BEGIN(KERN_ERR, 4136 "OF: Error reverting changeset (-19)"); 4137 4138 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 4139 "Adding overlay 'overlay_bad_symbol' failed\n"); 4140 4141 EXPECT_END(KERN_ERR, 4142 "OF: Error reverting changeset (-19)"); 4143 EXPECT_END(KERN_ERR, 4144 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name"); 4145 4146 /* --- overlay_bad_unresolved --- */ 4147 4148 EXPECT_BEGIN(KERN_ERR, 4149 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table"); 4150 EXPECT_BEGIN(KERN_ERR, 4151 "OF: resolver: overlay phandle fixup failed: -22"); 4152 4153 unittest(overlay_data_apply("overlay_bad_unresolved", NULL), 4154 "Adding overlay 'overlay_bad_unresolved' failed\n"); 4155 4156 EXPECT_END(KERN_ERR, 4157 "OF: resolver: overlay phandle fixup failed: -22"); 4158 EXPECT_END(KERN_ERR, 4159 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table"); 4160 4161 return; 4162 4163 err_unlock: 4164 mutex_unlock(&of_mutex); 4165 } 4166 4167 static int of_unittest_pci_dev_num; 4168 static int of_unittest_pci_child_num; 4169 4170 /* 4171 * PCI device tree node test driver 4172 */ 4173 static const struct pci_device_id testdrv_pci_ids[] = { 4174 { PCI_DEVICE(PCI_VENDOR_ID_REDHAT, 0x5), }, /* PCI_VENDOR_ID_REDHAT */ 4175 { 0, } 4176 }; 4177 4178 static int testdrv_probe(struct pci_dev *pdev, const struct pci_device_id *id) 4179 { 4180 struct overlay_info *info; 4181 struct device_node *dn; 4182 int ret, ovcs_id; 4183 u32 size; 4184 4185 dn = pdev->dev.of_node; 4186 if (!dn) { 4187 dev_err(&pdev->dev, "does not find bus endpoint"); 4188 return -EINVAL; 4189 } 4190 4191 for (info = overlays; info && info->name; info++) { 4192 if (!strcmp(info->name, "overlay_pci_node")) 4193 break; 4194 } 4195 if (!info || !info->name) { 4196 dev_err(&pdev->dev, "no overlay data for overlay_pci_node"); 4197 return -ENODEV; 4198 } 4199 4200 size = info->dtbo_end - info->dtbo_begin; 4201 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &ovcs_id, dn); 4202 of_node_put(dn); 4203 if (ret) 4204 return ret; 4205 4206 of_platform_default_populate(dn, NULL, &pdev->dev); 4207 pci_set_drvdata(pdev, (void *)(uintptr_t)ovcs_id); 4208 4209 return 0; 4210 } 4211 4212 static void testdrv_remove(struct pci_dev *pdev) 4213 { 4214 int ovcs_id = (int)(uintptr_t)pci_get_drvdata(pdev); 4215 4216 of_platform_depopulate(&pdev->dev); 4217 of_overlay_remove(&ovcs_id); 4218 } 4219 4220 static struct pci_driver testdrv_driver = { 4221 .name = "pci_dt_testdrv", 4222 .id_table = testdrv_pci_ids, 4223 .probe = testdrv_probe, 4224 .remove = testdrv_remove, 4225 }; 4226 4227 static int unittest_pci_probe(struct platform_device *pdev) 4228 { 4229 struct resource *res; 4230 struct device *dev; 4231 u64 exp_addr; 4232 4233 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 4234 if (!res) 4235 return -ENODEV; 4236 4237 dev = &pdev->dev; 4238 while (dev && !dev_is_pci(dev)) 4239 dev = dev->parent; 4240 if (!dev) { 4241 pr_err("unable to find parent device\n"); 4242 return -ENODEV; 4243 } 4244 4245 exp_addr = pci_resource_start(to_pci_dev(dev), 0) + 0x100; 4246 unittest(res->start == exp_addr, "Incorrect translated address %llx, expected %llx\n", 4247 (u64)res->start, exp_addr); 4248 4249 of_unittest_pci_child_num++; 4250 4251 return 0; 4252 } 4253 4254 static const struct of_device_id unittest_pci_of_match[] = { 4255 { .compatible = "unittest-pci" }, 4256 { } 4257 }; 4258 4259 static struct platform_driver unittest_pci_driver = { 4260 .probe = unittest_pci_probe, 4261 .driver = { 4262 .name = "unittest-pci", 4263 .of_match_table = unittest_pci_of_match, 4264 }, 4265 }; 4266 4267 static int of_unittest_pci_node_verify(struct pci_dev *pdev, bool add) 4268 { 4269 struct device_node *pnp, *np = NULL; 4270 struct device *child_dev; 4271 char *path = NULL; 4272 const __be32 *reg; 4273 int rc = 0; 4274 4275 pnp = pdev->dev.of_node; 4276 unittest(pnp, "Failed creating PCI dt node\n"); 4277 if (!pnp) 4278 return -ENODEV; 4279 4280 if (add) { 4281 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0/unittest-pci@100", pnp); 4282 np = of_find_node_by_path(path); 4283 unittest(np, "Failed to get unittest-pci node under PCI node\n"); 4284 if (!np) { 4285 rc = -ENODEV; 4286 goto failed; 4287 } 4288 4289 reg = of_get_property(np, "reg", NULL); 4290 unittest(reg, "Failed to get reg property\n"); 4291 if (!reg) 4292 rc = -ENODEV; 4293 } else { 4294 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0", pnp); 4295 np = of_find_node_by_path(path); 4296 unittest(!np, "Child device tree node is not removed\n"); 4297 child_dev = device_find_any_child(&pdev->dev); 4298 unittest(!child_dev, "Child device is not removed\n"); 4299 } 4300 4301 failed: 4302 kfree(path); 4303 if (np) 4304 of_node_put(np); 4305 4306 return rc; 4307 } 4308 4309 static void __init of_unittest_pci_node(void) 4310 { 4311 struct pci_dev *pdev = NULL; 4312 int rc; 4313 4314 if (!IS_ENABLED(CONFIG_PCI_DYNAMIC_OF_NODES)) 4315 return; 4316 4317 rc = pci_register_driver(&testdrv_driver); 4318 unittest(!rc, "Failed to register pci test driver; rc = %d\n", rc); 4319 if (rc) 4320 return; 4321 4322 rc = platform_driver_register(&unittest_pci_driver); 4323 if (unittest(!rc, "Failed to register unittest pci driver\n")) { 4324 pci_unregister_driver(&testdrv_driver); 4325 return; 4326 } 4327 4328 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL) { 4329 of_unittest_pci_node_verify(pdev, true); 4330 of_unittest_pci_dev_num++; 4331 } 4332 if (pdev) 4333 pci_dev_put(pdev); 4334 4335 unittest(of_unittest_pci_dev_num, 4336 "No test PCI device been found. Please run QEMU with '-device pci-testdev'\n"); 4337 unittest(of_unittest_pci_dev_num == of_unittest_pci_child_num, 4338 "Child device number %d is not expected %d", of_unittest_pci_child_num, 4339 of_unittest_pci_dev_num); 4340 4341 platform_driver_unregister(&unittest_pci_driver); 4342 pci_unregister_driver(&testdrv_driver); 4343 4344 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL) 4345 of_unittest_pci_node_verify(pdev, false); 4346 if (pdev) 4347 pci_dev_put(pdev); 4348 } 4349 #else 4350 4351 static inline __init void of_unittest_overlay_high_level(void) {} 4352 static inline __init void of_unittest_pci_node(void) { } 4353 4354 #endif 4355 4356 static int __init of_unittest(void) 4357 { 4358 struct device_node *np; 4359 int res; 4360 4361 pr_info("start of unittest - you will see error messages\n"); 4362 4363 /* Taint the kernel so we know we've run tests. */ 4364 add_taint(TAINT_TEST, LOCKDEP_STILL_OK); 4365 4366 /* adding data for unittest */ 4367 res = unittest_data_add(); 4368 if (res) 4369 return res; 4370 if (!of_aliases) 4371 of_aliases = of_find_node_by_path("/aliases"); 4372 4373 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 4374 if (!np) { 4375 pr_info("No testcase data in device tree; not running tests\n"); 4376 return 0; 4377 } 4378 of_node_put(np); 4379 4380 of_unittest_check_tree_linkage(); 4381 of_unittest_check_phandles(); 4382 of_unittest_find_node_by_name(); 4383 of_unittest_dynamic(); 4384 of_unittest_parse_phandle_with_args(); 4385 of_unittest_parse_phandle_with_args_map(); 4386 of_unittest_printf(); 4387 of_unittest_property_string(); 4388 of_unittest_property_copy(); 4389 of_unittest_changeset(); 4390 of_unittest_changeset_prop(); 4391 of_unittest_parse_interrupts(); 4392 of_unittest_parse_interrupts_extended(); 4393 of_unittest_irq_refcount(); 4394 of_unittest_dma_get_max_cpu_address(); 4395 of_unittest_parse_dma_ranges(); 4396 of_unittest_pci_dma_ranges(); 4397 of_unittest_pci_empty_dma_ranges(); 4398 of_unittest_bus_ranges(); 4399 of_unittest_bus_3cell_ranges(); 4400 of_unittest_reg(); 4401 of_unittest_translate_addr(); 4402 of_unittest_match_node(); 4403 of_unittest_platform_populate(); 4404 of_unittest_overlay(); 4405 of_unittest_lifecycle(); 4406 of_unittest_pci_node(); 4407 4408 /* Double check linkage after removing testcase data */ 4409 of_unittest_check_tree_linkage(); 4410 4411 of_unittest_overlay_high_level(); 4412 4413 pr_info("end of unittest - %i passed, %i failed\n", 4414 unittest_results.passed, unittest_results.failed); 4415 4416 return 0; 4417 } 4418 late_initcall(of_unittest); 4419