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 rc = -EINVAL; 2033 goto unlock; 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 rc = -ENODEV; 2041 goto unlock; 2042 } 2043 2044 EXPECT_BEGIN(KERN_INFO, 2045 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 2046 2047 np = unittest_data_node->child; 2048 while (np) { 2049 struct device_node *next = np->sibling; 2050 2051 np->parent = of_root; 2052 /* this will clear OF_DETACHED in np and children */ 2053 attach_node_and_children(np); 2054 np = next; 2055 } 2056 2057 EXPECT_END(KERN_INFO, 2058 "Duplicate name in testcase-data, renamed to \"duplicate-name#1\""); 2059 2060 unlock: 2061 of_overlay_mutex_unlock(); 2062 2063 return rc; 2064 } 2065 2066 #ifdef CONFIG_OF_OVERLAY 2067 static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id); 2068 2069 static int unittest_probe(struct platform_device *pdev) 2070 { 2071 struct device *dev = &pdev->dev; 2072 struct device_node *np = dev->of_node; 2073 2074 if (np == NULL) { 2075 dev_err(dev, "No OF data for device\n"); 2076 return -EINVAL; 2077 2078 } 2079 2080 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2081 2082 of_platform_populate(np, NULL, NULL, &pdev->dev); 2083 2084 return 0; 2085 } 2086 2087 static void unittest_remove(struct platform_device *pdev) 2088 { 2089 struct device *dev = &pdev->dev; 2090 struct device_node *np = dev->of_node; 2091 2092 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2093 } 2094 2095 static const struct of_device_id unittest_match[] = { 2096 { .compatible = "unittest", }, 2097 {}, 2098 }; 2099 2100 static struct platform_driver unittest_driver = { 2101 .probe = unittest_probe, 2102 .remove = unittest_remove, 2103 .driver = { 2104 .name = "unittest", 2105 .of_match_table = unittest_match, 2106 }, 2107 }; 2108 2109 /* get the platform device instantiated at the path */ 2110 static struct platform_device *of_path_to_platform_device(const char *path) 2111 { 2112 struct device_node *np; 2113 struct platform_device *pdev; 2114 2115 np = of_find_node_by_path(path); 2116 if (np == NULL) 2117 return NULL; 2118 2119 pdev = of_find_device_by_node(np); 2120 of_node_put(np); 2121 2122 return pdev; 2123 } 2124 2125 /* find out if a platform device exists at that path */ 2126 static int of_path_platform_device_exists(const char *path) 2127 { 2128 struct platform_device *pdev; 2129 2130 pdev = of_path_to_platform_device(path); 2131 platform_device_put(pdev); 2132 return pdev != NULL; 2133 } 2134 2135 #ifdef CONFIG_OF_GPIO 2136 2137 struct unittest_gpio_dev { 2138 struct gpio_chip chip; 2139 }; 2140 2141 static int unittest_gpio_chip_request_count; 2142 static int unittest_gpio_probe_count; 2143 static int unittest_gpio_probe_pass_count; 2144 2145 static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) 2146 { 2147 unittest_gpio_chip_request_count++; 2148 2149 pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, 2150 unittest_gpio_chip_request_count); 2151 return 0; 2152 } 2153 2154 static int unittest_gpio_probe(struct platform_device *pdev) 2155 { 2156 struct unittest_gpio_dev *devptr; 2157 int ret; 2158 2159 unittest_gpio_probe_count++; 2160 2161 devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); 2162 if (!devptr) 2163 return -ENOMEM; 2164 2165 platform_set_drvdata(pdev, devptr); 2166 2167 devptr->chip.fwnode = dev_fwnode(&pdev->dev); 2168 devptr->chip.label = "of-unittest-gpio"; 2169 devptr->chip.base = -1; /* dynamic allocation */ 2170 devptr->chip.ngpio = 5; 2171 devptr->chip.request = unittest_gpio_chip_request; 2172 2173 ret = gpiochip_add_data(&devptr->chip, NULL); 2174 2175 unittest(!ret, 2176 "gpiochip_add_data() for node @%pfw failed, ret = %d\n", devptr->chip.fwnode, ret); 2177 2178 if (!ret) 2179 unittest_gpio_probe_pass_count++; 2180 return ret; 2181 } 2182 2183 static void unittest_gpio_remove(struct platform_device *pdev) 2184 { 2185 struct unittest_gpio_dev *devptr = platform_get_drvdata(pdev); 2186 struct device *dev = &pdev->dev; 2187 2188 dev_dbg(dev, "%s for node @%pfw\n", __func__, devptr->chip.fwnode); 2189 2190 if (devptr->chip.base != -1) 2191 gpiochip_remove(&devptr->chip); 2192 2193 kfree(devptr); 2194 } 2195 2196 static const struct of_device_id unittest_gpio_id[] = { 2197 { .compatible = "unittest-gpio", }, 2198 {} 2199 }; 2200 2201 static struct platform_driver unittest_gpio_driver = { 2202 .probe = unittest_gpio_probe, 2203 .remove = unittest_gpio_remove, 2204 .driver = { 2205 .name = "unittest-gpio", 2206 .of_match_table = unittest_gpio_id, 2207 }, 2208 }; 2209 2210 static void __init of_unittest_overlay_gpio(void) 2211 { 2212 int chip_request_count; 2213 int probe_pass_count; 2214 int ret; 2215 2216 /* 2217 * tests: apply overlays before registering driver 2218 * Similar to installing a driver as a module, the 2219 * driver is registered after applying the overlays. 2220 * 2221 * The overlays are applied by overlay_data_apply() 2222 * instead of of_unittest_apply_overlay() so that they 2223 * will not be tracked. Thus they will not be removed 2224 * by of_unittest_remove_tracked_overlays(). 2225 * 2226 * - apply overlay_gpio_01 2227 * - apply overlay_gpio_02a 2228 * - apply overlay_gpio_02b 2229 * - register driver 2230 * 2231 * register driver will result in 2232 * - probe and processing gpio hog for overlay_gpio_01 2233 * - probe for overlay_gpio_02a 2234 * - processing gpio for overlay_gpio_02b 2235 */ 2236 2237 probe_pass_count = unittest_gpio_probe_pass_count; 2238 chip_request_count = unittest_gpio_chip_request_count; 2239 2240 /* 2241 * overlay_gpio_01 contains gpio node and child gpio hog node 2242 * overlay_gpio_02a contains gpio node 2243 * overlay_gpio_02b contains child gpio hog node 2244 */ 2245 2246 unittest(overlay_data_apply("overlay_gpio_01", NULL), 2247 "Adding overlay 'overlay_gpio_01' failed\n"); 2248 2249 unittest(overlay_data_apply("overlay_gpio_02a", NULL), 2250 "Adding overlay 'overlay_gpio_02a' failed\n"); 2251 2252 unittest(overlay_data_apply("overlay_gpio_02b", NULL), 2253 "Adding overlay 'overlay_gpio_02b' failed\n"); 2254 2255 ret = platform_driver_register(&unittest_gpio_driver); 2256 if (unittest(ret == 0, "could not register unittest gpio driver\n")) 2257 return; 2258 2259 unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, 2260 "unittest_gpio_probe() failed or not called\n"); 2261 2262 unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, 2263 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2264 unittest_gpio_chip_request_count - chip_request_count); 2265 2266 /* 2267 * tests: apply overlays after registering driver 2268 * 2269 * Similar to a driver built-in to the kernel, the 2270 * driver is registered before applying the overlays. 2271 * 2272 * overlay_gpio_03 contains gpio node and child gpio hog node 2273 * 2274 * - apply overlay_gpio_03 2275 * 2276 * apply overlay will result in 2277 * - probe and processing gpio hog. 2278 */ 2279 2280 probe_pass_count = unittest_gpio_probe_pass_count; 2281 chip_request_count = unittest_gpio_chip_request_count; 2282 2283 /* overlay_gpio_03 contains gpio node and child gpio hog node */ 2284 2285 unittest(overlay_data_apply("overlay_gpio_03", NULL), 2286 "Adding overlay 'overlay_gpio_03' failed\n"); 2287 2288 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 2289 "unittest_gpio_probe() failed or not called\n"); 2290 2291 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 2292 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2293 unittest_gpio_chip_request_count - chip_request_count); 2294 2295 /* 2296 * overlay_gpio_04a contains gpio node 2297 * 2298 * - apply overlay_gpio_04a 2299 * 2300 * apply the overlay will result in 2301 * - probe for overlay_gpio_04a 2302 */ 2303 2304 probe_pass_count = unittest_gpio_probe_pass_count; 2305 chip_request_count = unittest_gpio_chip_request_count; 2306 2307 /* overlay_gpio_04a contains gpio node */ 2308 2309 unittest(overlay_data_apply("overlay_gpio_04a", NULL), 2310 "Adding overlay 'overlay_gpio_04a' failed\n"); 2311 2312 unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, 2313 "unittest_gpio_probe() failed or not called\n"); 2314 2315 /* 2316 * overlay_gpio_04b contains child gpio hog node 2317 * 2318 * - apply overlay_gpio_04b 2319 * 2320 * apply the overlay will result in 2321 * - processing gpio for overlay_gpio_04b 2322 */ 2323 2324 /* overlay_gpio_04b contains child gpio hog node */ 2325 2326 unittest(overlay_data_apply("overlay_gpio_04b", NULL), 2327 "Adding overlay 'overlay_gpio_04b' failed\n"); 2328 2329 unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, 2330 "unittest_gpio_chip_request() called %d times (expected 1 time)\n", 2331 unittest_gpio_chip_request_count - chip_request_count); 2332 } 2333 2334 #else 2335 2336 static void __init of_unittest_overlay_gpio(void) 2337 { 2338 /* skip tests */ 2339 } 2340 2341 #endif 2342 2343 #if IS_BUILTIN(CONFIG_I2C) 2344 2345 /* get the i2c client device instantiated at the path */ 2346 static struct i2c_client *of_path_to_i2c_client(const char *path) 2347 { 2348 struct device_node *np; 2349 struct i2c_client *client; 2350 2351 np = of_find_node_by_path(path); 2352 if (np == NULL) 2353 return NULL; 2354 2355 client = of_find_i2c_device_by_node(np); 2356 of_node_put(np); 2357 2358 return client; 2359 } 2360 2361 /* find out if a i2c client device exists at that path */ 2362 static int of_path_i2c_client_exists(const char *path) 2363 { 2364 struct i2c_client *client; 2365 2366 client = of_path_to_i2c_client(path); 2367 if (client) 2368 put_device(&client->dev); 2369 return client != NULL; 2370 } 2371 #else 2372 static int of_path_i2c_client_exists(const char *path) 2373 { 2374 return 0; 2375 } 2376 #endif 2377 2378 enum overlay_type { 2379 PDEV_OVERLAY, 2380 I2C_OVERLAY 2381 }; 2382 2383 static int of_path_device_type_exists(const char *path, 2384 enum overlay_type ovtype) 2385 { 2386 switch (ovtype) { 2387 case PDEV_OVERLAY: 2388 return of_path_platform_device_exists(path); 2389 case I2C_OVERLAY: 2390 return of_path_i2c_client_exists(path); 2391 } 2392 return 0; 2393 } 2394 2395 static const char *unittest_path(int nr, enum overlay_type ovtype) 2396 { 2397 const char *base; 2398 static char buf[256]; 2399 2400 switch (ovtype) { 2401 case PDEV_OVERLAY: 2402 base = "/testcase-data/overlay-node/test-bus"; 2403 break; 2404 case I2C_OVERLAY: 2405 base = "/testcase-data/overlay-node/test-bus/i2c-test-bus"; 2406 break; 2407 default: 2408 buf[0] = '\0'; 2409 return buf; 2410 } 2411 snprintf(buf, sizeof(buf) - 1, "%s/test-unittest%d", base, nr); 2412 buf[sizeof(buf) - 1] = '\0'; 2413 return buf; 2414 } 2415 2416 static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype) 2417 { 2418 const char *path; 2419 2420 path = unittest_path(unittest_nr, ovtype); 2421 2422 switch (ovtype) { 2423 case PDEV_OVERLAY: 2424 return of_path_platform_device_exists(path); 2425 case I2C_OVERLAY: 2426 return of_path_i2c_client_exists(path); 2427 } 2428 return 0; 2429 } 2430 2431 static const char *overlay_name_from_nr(int nr) 2432 { 2433 static char buf[256]; 2434 2435 snprintf(buf, sizeof(buf) - 1, 2436 "overlay_%d", nr); 2437 buf[sizeof(buf) - 1] = '\0'; 2438 2439 return buf; 2440 } 2441 2442 static const char *bus_path = "/testcase-data/overlay-node/test-bus"; 2443 2444 #define MAX_TRACK_OVCS_IDS 256 2445 2446 static int track_ovcs_id[MAX_TRACK_OVCS_IDS]; 2447 static int track_ovcs_id_overlay_nr[MAX_TRACK_OVCS_IDS]; 2448 static int track_ovcs_id_cnt; 2449 2450 static void of_unittest_track_overlay(int ovcs_id, int overlay_nr) 2451 { 2452 if (WARN_ON(track_ovcs_id_cnt >= MAX_TRACK_OVCS_IDS)) 2453 return; 2454 2455 track_ovcs_id[track_ovcs_id_cnt] = ovcs_id; 2456 track_ovcs_id_overlay_nr[track_ovcs_id_cnt] = overlay_nr; 2457 track_ovcs_id_cnt++; 2458 } 2459 2460 static void of_unittest_untrack_overlay(int ovcs_id) 2461 { 2462 if (WARN_ON(track_ovcs_id_cnt < 1)) 2463 return; 2464 2465 track_ovcs_id_cnt--; 2466 2467 /* If out of synch then test is broken. Do not try to recover. */ 2468 WARN_ON(track_ovcs_id[track_ovcs_id_cnt] != ovcs_id); 2469 } 2470 2471 static void of_unittest_remove_tracked_overlays(void) 2472 { 2473 int ret, ovcs_id, overlay_nr, save_ovcs_id; 2474 const char *overlay_name; 2475 2476 while (track_ovcs_id_cnt > 0) { 2477 2478 ovcs_id = track_ovcs_id[track_ovcs_id_cnt - 1]; 2479 overlay_nr = track_ovcs_id_overlay_nr[track_ovcs_id_cnt - 1]; 2480 save_ovcs_id = ovcs_id; 2481 ret = of_overlay_remove(&ovcs_id); 2482 if (ret == -ENODEV) { 2483 overlay_name = overlay_name_from_nr(overlay_nr); 2484 pr_warn("%s: of_overlay_remove() for overlay \"%s\" failed, ret = %d\n", 2485 __func__, overlay_name, ret); 2486 } 2487 of_unittest_untrack_overlay(save_ovcs_id); 2488 } 2489 2490 } 2491 2492 static int __init of_unittest_apply_overlay(int overlay_nr, int *ovcs_id) 2493 { 2494 /* 2495 * The overlay will be tracked, thus it will be removed 2496 * by of_unittest_remove_tracked_overlays(). 2497 */ 2498 2499 const char *overlay_name; 2500 2501 overlay_name = overlay_name_from_nr(overlay_nr); 2502 2503 if (!overlay_data_apply(overlay_name, ovcs_id)) { 2504 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2505 return -EFAULT; 2506 } 2507 of_unittest_track_overlay(*ovcs_id, overlay_nr); 2508 2509 return 0; 2510 } 2511 2512 static int __init __of_unittest_apply_overlay_check(int overlay_nr, 2513 int unittest_nr, int before, int after, 2514 enum overlay_type ovtype) 2515 { 2516 int ret, ovcs_id; 2517 2518 /* unittest device must be in before state */ 2519 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2520 unittest(0, "%s with device @\"%s\" %s\n", 2521 overlay_name_from_nr(overlay_nr), 2522 unittest_path(unittest_nr, ovtype), 2523 !before ? "enabled" : "disabled"); 2524 return -EINVAL; 2525 } 2526 2527 /* apply the overlay */ 2528 ovcs_id = 0; 2529 ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id); 2530 if (ret != 0) { 2531 /* of_unittest_apply_overlay already called unittest() */ 2532 return ret; 2533 } 2534 2535 /* unittest device must be in after state */ 2536 if (of_unittest_device_exists(unittest_nr, ovtype) != after) { 2537 unittest(0, "%s with device @\"%s\" %s\n", 2538 overlay_name_from_nr(overlay_nr), 2539 unittest_path(unittest_nr, ovtype), 2540 !after ? "enabled" : "disabled"); 2541 return -EINVAL; 2542 } 2543 2544 return ovcs_id; 2545 } 2546 2547 /* apply an overlay while checking before and after states */ 2548 static int __init of_unittest_apply_overlay_check(int overlay_nr, 2549 int unittest_nr, int before, int after, 2550 enum overlay_type ovtype) 2551 { 2552 int ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, 2553 unittest_nr, before, after, ovtype); 2554 if (ovcs_id < 0) 2555 return ovcs_id; 2556 2557 return 0; 2558 } 2559 2560 /* apply an overlay and then revert it while checking before, after states */ 2561 static int __init of_unittest_apply_revert_overlay_check(int overlay_nr, 2562 int unittest_nr, int before, int after, 2563 enum overlay_type ovtype) 2564 { 2565 int ret, ovcs_id, save_ovcs_id; 2566 2567 ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, unittest_nr, 2568 before, after, ovtype); 2569 if (ovcs_id < 0) 2570 return ovcs_id; 2571 2572 /* remove the overlay */ 2573 save_ovcs_id = ovcs_id; 2574 ret = of_overlay_remove(&ovcs_id); 2575 if (ret != 0) { 2576 unittest(0, "%s failed to be destroyed @\"%s\"\n", 2577 overlay_name_from_nr(overlay_nr), 2578 unittest_path(unittest_nr, ovtype)); 2579 return ret; 2580 } 2581 of_unittest_untrack_overlay(save_ovcs_id); 2582 2583 /* unittest device must be again in before state */ 2584 if (of_unittest_device_exists(unittest_nr, ovtype) != before) { 2585 unittest(0, "%s with device @\"%s\" %s\n", 2586 overlay_name_from_nr(overlay_nr), 2587 unittest_path(unittest_nr, ovtype), 2588 !before ? "enabled" : "disabled"); 2589 return -EINVAL; 2590 } 2591 2592 return 0; 2593 } 2594 2595 /* test activation of device */ 2596 static void __init of_unittest_overlay_0(void) 2597 { 2598 int ret; 2599 2600 EXPECT_BEGIN(KERN_INFO, 2601 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2602 2603 /* device should enable */ 2604 ret = of_unittest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY); 2605 2606 EXPECT_END(KERN_INFO, 2607 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status"); 2608 2609 if (ret) 2610 return; 2611 2612 unittest(1, "overlay test %d passed\n", 0); 2613 } 2614 2615 /* test deactivation of device */ 2616 static void __init of_unittest_overlay_1(void) 2617 { 2618 int ret; 2619 2620 EXPECT_BEGIN(KERN_INFO, 2621 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2622 2623 /* device should disable */ 2624 ret = of_unittest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY); 2625 2626 EXPECT_END(KERN_INFO, 2627 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status"); 2628 2629 if (ret) 2630 return; 2631 2632 unittest(1, "overlay test %d passed\n", 1); 2633 2634 } 2635 2636 /* test activation of device */ 2637 static void __init of_unittest_overlay_2(void) 2638 { 2639 int ret; 2640 2641 EXPECT_BEGIN(KERN_INFO, 2642 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2643 2644 /* device should enable */ 2645 ret = of_unittest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY); 2646 2647 EXPECT_END(KERN_INFO, 2648 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status"); 2649 2650 if (ret) 2651 return; 2652 unittest(1, "overlay test %d passed\n", 2); 2653 } 2654 2655 /* test deactivation of device */ 2656 static void __init of_unittest_overlay_3(void) 2657 { 2658 int ret; 2659 2660 EXPECT_BEGIN(KERN_INFO, 2661 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2662 2663 /* device should disable */ 2664 ret = of_unittest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY); 2665 2666 EXPECT_END(KERN_INFO, 2667 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status"); 2668 2669 if (ret) 2670 return; 2671 2672 unittest(1, "overlay test %d passed\n", 3); 2673 } 2674 2675 /* test activation of a full device node */ 2676 static void __init of_unittest_overlay_4(void) 2677 { 2678 /* device should disable */ 2679 if (of_unittest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY)) 2680 return; 2681 2682 unittest(1, "overlay test %d passed\n", 4); 2683 } 2684 2685 /* test overlay apply/revert sequence */ 2686 static void __init of_unittest_overlay_5(void) 2687 { 2688 int ret; 2689 2690 EXPECT_BEGIN(KERN_INFO, 2691 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2692 2693 /* device should disable */ 2694 ret = of_unittest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY); 2695 2696 EXPECT_END(KERN_INFO, 2697 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status"); 2698 2699 if (ret) 2700 return; 2701 2702 unittest(1, "overlay test %d passed\n", 5); 2703 } 2704 2705 /* test overlay application in sequence */ 2706 static void __init of_unittest_overlay_6(void) 2707 { 2708 int i, save_ovcs_id[2], ovcs_id; 2709 int overlay_nr = 6, unittest_nr = 6; 2710 int before = 0, after = 1; 2711 const char *overlay_name; 2712 2713 int ret; 2714 2715 /* unittest device must be in before state */ 2716 for (i = 0; i < 2; i++) { 2717 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2718 != before) { 2719 unittest(0, "%s with device @\"%s\" %s\n", 2720 overlay_name_from_nr(overlay_nr + i), 2721 unittest_path(unittest_nr + i, 2722 PDEV_OVERLAY), 2723 !before ? "enabled" : "disabled"); 2724 return; 2725 } 2726 } 2727 2728 /* apply the overlays */ 2729 2730 EXPECT_BEGIN(KERN_INFO, 2731 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2732 2733 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2734 2735 ret = overlay_data_apply(overlay_name, &ovcs_id); 2736 2737 if (!ret) { 2738 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2739 return; 2740 } 2741 save_ovcs_id[0] = ovcs_id; 2742 of_unittest_track_overlay(ovcs_id, overlay_nr + 0); 2743 2744 EXPECT_END(KERN_INFO, 2745 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status"); 2746 2747 EXPECT_BEGIN(KERN_INFO, 2748 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2749 2750 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2751 2752 ret = overlay_data_apply(overlay_name, &ovcs_id); 2753 2754 if (!ret) { 2755 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2756 return; 2757 } 2758 save_ovcs_id[1] = ovcs_id; 2759 of_unittest_track_overlay(ovcs_id, overlay_nr + 1); 2760 2761 EXPECT_END(KERN_INFO, 2762 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status"); 2763 2764 2765 for (i = 0; i < 2; i++) { 2766 /* unittest device must be in after state */ 2767 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2768 != after) { 2769 unittest(0, "overlay @\"%s\" failed @\"%s\" %s\n", 2770 overlay_name_from_nr(overlay_nr + i), 2771 unittest_path(unittest_nr + i, 2772 PDEV_OVERLAY), 2773 !after ? "enabled" : "disabled"); 2774 return; 2775 } 2776 } 2777 2778 for (i = 1; i >= 0; i--) { 2779 ovcs_id = save_ovcs_id[i]; 2780 if (of_overlay_remove(&ovcs_id)) { 2781 unittest(0, "%s failed destroy @\"%s\"\n", 2782 overlay_name_from_nr(overlay_nr + i), 2783 unittest_path(unittest_nr + i, 2784 PDEV_OVERLAY)); 2785 return; 2786 } 2787 of_unittest_untrack_overlay(save_ovcs_id[i]); 2788 } 2789 2790 for (i = 0; i < 2; i++) { 2791 /* unittest device must be again in before state */ 2792 if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY) 2793 != before) { 2794 unittest(0, "%s with device @\"%s\" %s\n", 2795 overlay_name_from_nr(overlay_nr + i), 2796 unittest_path(unittest_nr + i, 2797 PDEV_OVERLAY), 2798 !before ? "enabled" : "disabled"); 2799 return; 2800 } 2801 } 2802 2803 unittest(1, "overlay test %d passed\n", 6); 2804 2805 } 2806 2807 /* test overlay application in sequence */ 2808 static void __init of_unittest_overlay_8(void) 2809 { 2810 int i, save_ovcs_id[2], ovcs_id; 2811 int overlay_nr = 8, unittest_nr = 8; 2812 const char *overlay_name; 2813 int ret; 2814 2815 /* we don't care about device state in this test */ 2816 2817 EXPECT_BEGIN(KERN_INFO, 2818 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2819 2820 overlay_name = overlay_name_from_nr(overlay_nr + 0); 2821 2822 ret = overlay_data_apply(overlay_name, &ovcs_id); 2823 if (!ret) 2824 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2825 2826 EXPECT_END(KERN_INFO, 2827 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status"); 2828 2829 if (!ret) 2830 return; 2831 2832 save_ovcs_id[0] = ovcs_id; 2833 of_unittest_track_overlay(ovcs_id, overlay_nr + 0); 2834 2835 overlay_name = overlay_name_from_nr(overlay_nr + 1); 2836 2837 EXPECT_BEGIN(KERN_INFO, 2838 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2839 2840 /* apply the overlays */ 2841 ret = overlay_data_apply(overlay_name, &ovcs_id); 2842 2843 EXPECT_END(KERN_INFO, 2844 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo"); 2845 2846 if (!ret) { 2847 unittest(0, "could not apply overlay \"%s\"\n", overlay_name); 2848 return; 2849 } 2850 2851 save_ovcs_id[1] = ovcs_id; 2852 of_unittest_track_overlay(ovcs_id, overlay_nr + 1); 2853 2854 /* now try to remove first overlay (it should fail) */ 2855 ovcs_id = save_ovcs_id[0]; 2856 2857 EXPECT_BEGIN(KERN_INFO, 2858 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2859 2860 EXPECT_BEGIN(KERN_INFO, 2861 "OF: overlay: overlay #6 is not topmost"); 2862 2863 ret = of_overlay_remove(&ovcs_id); 2864 2865 EXPECT_END(KERN_INFO, 2866 "OF: overlay: overlay #6 is not topmost"); 2867 2868 EXPECT_END(KERN_INFO, 2869 "OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8"); 2870 2871 if (!ret) { 2872 /* 2873 * Should never get here. If we do, expect a lot of 2874 * subsequent tracking and overlay removal related errors. 2875 */ 2876 unittest(0, "%s was destroyed @\"%s\"\n", 2877 overlay_name_from_nr(overlay_nr + 0), 2878 unittest_path(unittest_nr, 2879 PDEV_OVERLAY)); 2880 return; 2881 } 2882 2883 /* removing them in order should work */ 2884 for (i = 1; i >= 0; i--) { 2885 ovcs_id = save_ovcs_id[i]; 2886 if (of_overlay_remove(&ovcs_id)) { 2887 unittest(0, "%s not destroyed @\"%s\"\n", 2888 overlay_name_from_nr(overlay_nr + i), 2889 unittest_path(unittest_nr, 2890 PDEV_OVERLAY)); 2891 return; 2892 } 2893 of_unittest_untrack_overlay(save_ovcs_id[i]); 2894 } 2895 2896 unittest(1, "overlay test %d passed\n", 8); 2897 } 2898 2899 /* test insertion of a bus with parent devices */ 2900 static void __init of_unittest_overlay_10(void) 2901 { 2902 int ret; 2903 char *child_path; 2904 2905 /* device should disable */ 2906 ret = of_unittest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY); 2907 2908 if (unittest(ret == 0, 2909 "overlay test %d failed; overlay application\n", 10)) 2910 return; 2911 2912 child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101", 2913 unittest_path(10, PDEV_OVERLAY)); 2914 if (unittest(child_path, "overlay test %d failed; kasprintf\n", 10)) 2915 return; 2916 2917 ret = of_path_device_type_exists(child_path, PDEV_OVERLAY); 2918 kfree(child_path); 2919 2920 unittest(ret, "overlay test %d failed; no child device\n", 10); 2921 } 2922 2923 /* test insertion of a bus with parent devices (and revert) */ 2924 static void __init of_unittest_overlay_11(void) 2925 { 2926 int ret; 2927 2928 /* device should disable */ 2929 ret = of_unittest_apply_revert_overlay_check(11, 11, 0, 1, 2930 PDEV_OVERLAY); 2931 2932 unittest(ret == 0, "overlay test %d failed; overlay apply\n", 11); 2933 } 2934 2935 #if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY) 2936 2937 struct unittest_i2c_bus_data { 2938 struct platform_device *pdev; 2939 struct i2c_adapter adap; 2940 }; 2941 2942 static int unittest_i2c_master_xfer(struct i2c_adapter *adap, 2943 struct i2c_msg *msgs, int num) 2944 { 2945 struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap); 2946 2947 (void)std; 2948 2949 return num; 2950 } 2951 2952 static u32 unittest_i2c_functionality(struct i2c_adapter *adap) 2953 { 2954 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 2955 } 2956 2957 static const struct i2c_algorithm unittest_i2c_algo = { 2958 .master_xfer = unittest_i2c_master_xfer, 2959 .functionality = unittest_i2c_functionality, 2960 }; 2961 2962 static int unittest_i2c_bus_probe(struct platform_device *pdev) 2963 { 2964 struct device *dev = &pdev->dev; 2965 struct device_node *np = dev->of_node; 2966 struct unittest_i2c_bus_data *std; 2967 struct i2c_adapter *adap; 2968 int ret; 2969 2970 if (np == NULL) { 2971 dev_err(dev, "No OF data for device\n"); 2972 return -EINVAL; 2973 2974 } 2975 2976 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 2977 2978 std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL); 2979 if (!std) 2980 return -ENOMEM; 2981 2982 /* link them together */ 2983 std->pdev = pdev; 2984 platform_set_drvdata(pdev, std); 2985 2986 adap = &std->adap; 2987 i2c_set_adapdata(adap, std); 2988 adap->nr = -1; 2989 strscpy(adap->name, pdev->name, sizeof(adap->name)); 2990 adap->class = I2C_CLASS_DEPRECATED; 2991 adap->algo = &unittest_i2c_algo; 2992 adap->dev.parent = dev; 2993 adap->dev.of_node = dev->of_node; 2994 adap->timeout = 5 * HZ; 2995 adap->retries = 3; 2996 2997 ret = i2c_add_numbered_adapter(adap); 2998 if (ret != 0) { 2999 dev_err(dev, "Failed to add I2C adapter\n"); 3000 return ret; 3001 } 3002 3003 return 0; 3004 } 3005 3006 static void unittest_i2c_bus_remove(struct platform_device *pdev) 3007 { 3008 struct device *dev = &pdev->dev; 3009 struct device_node *np = dev->of_node; 3010 struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev); 3011 3012 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3013 i2c_del_adapter(&std->adap); 3014 } 3015 3016 static const struct of_device_id unittest_i2c_bus_match[] = { 3017 { .compatible = "unittest-i2c-bus", }, 3018 {}, 3019 }; 3020 3021 static struct platform_driver unittest_i2c_bus_driver = { 3022 .probe = unittest_i2c_bus_probe, 3023 .remove = unittest_i2c_bus_remove, 3024 .driver = { 3025 .name = "unittest-i2c-bus", 3026 .of_match_table = unittest_i2c_bus_match, 3027 }, 3028 }; 3029 3030 static int unittest_i2c_dev_probe(struct i2c_client *client) 3031 { 3032 struct device *dev = &client->dev; 3033 struct device_node *np = client->dev.of_node; 3034 3035 if (!np) { 3036 dev_err(dev, "No OF node\n"); 3037 return -EINVAL; 3038 } 3039 3040 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3041 3042 return 0; 3043 }; 3044 3045 static void unittest_i2c_dev_remove(struct i2c_client *client) 3046 { 3047 struct device *dev = &client->dev; 3048 struct device_node *np = client->dev.of_node; 3049 3050 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3051 } 3052 3053 static const struct i2c_device_id unittest_i2c_dev_id[] = { 3054 { .name = "unittest-i2c-dev" }, 3055 { } 3056 }; 3057 3058 static struct i2c_driver unittest_i2c_dev_driver = { 3059 .driver = { 3060 .name = "unittest-i2c-dev", 3061 }, 3062 .probe = unittest_i2c_dev_probe, 3063 .remove = unittest_i2c_dev_remove, 3064 .id_table = unittest_i2c_dev_id, 3065 }; 3066 3067 #if IS_BUILTIN(CONFIG_I2C_MUX) 3068 3069 static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan) 3070 { 3071 return 0; 3072 } 3073 3074 static int unittest_i2c_mux_probe(struct i2c_client *client) 3075 { 3076 int i, nchans; 3077 struct device *dev = &client->dev; 3078 struct i2c_adapter *adap = client->adapter; 3079 struct device_node *np = client->dev.of_node, *child; 3080 struct i2c_mux_core *muxc; 3081 u32 reg, max_reg; 3082 3083 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3084 3085 if (!np) { 3086 dev_err(dev, "No OF node\n"); 3087 return -EINVAL; 3088 } 3089 3090 max_reg = (u32)-1; 3091 for_each_child_of_node(np, child) { 3092 if (of_property_read_u32(child, "reg", ®)) 3093 continue; 3094 if (max_reg == (u32)-1 || reg > max_reg) 3095 max_reg = reg; 3096 } 3097 nchans = max_reg == (u32)-1 ? 0 : max_reg + 1; 3098 if (nchans == 0) { 3099 dev_err(dev, "No channels\n"); 3100 return -EINVAL; 3101 } 3102 3103 muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0, 3104 unittest_i2c_mux_select_chan, NULL); 3105 if (!muxc) 3106 return -ENOMEM; 3107 for (i = 0; i < nchans; i++) { 3108 if (i2c_mux_add_adapter(muxc, 0, i)) { 3109 dev_err(dev, "Failed to register mux #%d\n", i); 3110 i2c_mux_del_adapters(muxc); 3111 return -ENODEV; 3112 } 3113 } 3114 3115 i2c_set_clientdata(client, muxc); 3116 3117 return 0; 3118 }; 3119 3120 static void unittest_i2c_mux_remove(struct i2c_client *client) 3121 { 3122 struct device *dev = &client->dev; 3123 struct device_node *np = client->dev.of_node; 3124 struct i2c_mux_core *muxc = i2c_get_clientdata(client); 3125 3126 dev_dbg(dev, "%s for node @%pOF\n", __func__, np); 3127 i2c_mux_del_adapters(muxc); 3128 } 3129 3130 static const struct i2c_device_id unittest_i2c_mux_id[] = { 3131 { .name = "unittest-i2c-mux" }, 3132 { } 3133 }; 3134 3135 static struct i2c_driver unittest_i2c_mux_driver = { 3136 .driver = { 3137 .name = "unittest-i2c-mux", 3138 }, 3139 .probe = unittest_i2c_mux_probe, 3140 .remove = unittest_i2c_mux_remove, 3141 .id_table = unittest_i2c_mux_id, 3142 }; 3143 3144 #endif 3145 3146 static int of_unittest_overlay_i2c_init(void) 3147 { 3148 int ret; 3149 3150 ret = i2c_add_driver(&unittest_i2c_dev_driver); 3151 if (unittest(ret == 0, 3152 "could not register unittest i2c device driver\n")) 3153 return ret; 3154 3155 ret = platform_driver_register(&unittest_i2c_bus_driver); 3156 3157 if (unittest(ret == 0, 3158 "could not register unittest i2c bus driver\n")) 3159 return ret; 3160 3161 #if IS_BUILTIN(CONFIG_I2C_MUX) 3162 3163 EXPECT_BEGIN(KERN_INFO, 3164 "i2c i2c-1: Added multiplexed i2c bus 2"); 3165 3166 ret = i2c_add_driver(&unittest_i2c_mux_driver); 3167 3168 EXPECT_END(KERN_INFO, 3169 "i2c i2c-1: Added multiplexed i2c bus 2"); 3170 3171 if (unittest(ret == 0, 3172 "could not register unittest i2c mux driver\n")) 3173 return ret; 3174 #endif 3175 3176 return 0; 3177 } 3178 3179 static void of_unittest_overlay_i2c_cleanup(void) 3180 { 3181 #if IS_BUILTIN(CONFIG_I2C_MUX) 3182 i2c_del_driver(&unittest_i2c_mux_driver); 3183 #endif 3184 platform_driver_unregister(&unittest_i2c_bus_driver); 3185 i2c_del_driver(&unittest_i2c_dev_driver); 3186 } 3187 3188 static void __init of_unittest_overlay_i2c_12(void) 3189 { 3190 int ret; 3191 3192 /* device should enable */ 3193 EXPECT_BEGIN(KERN_INFO, 3194 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 3195 3196 ret = of_unittest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY); 3197 3198 EXPECT_END(KERN_INFO, 3199 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status"); 3200 3201 if (ret) 3202 return; 3203 3204 unittest(1, "overlay test %d passed\n", 12); 3205 } 3206 3207 /* test deactivation of device */ 3208 static void __init of_unittest_overlay_i2c_13(void) 3209 { 3210 int ret; 3211 3212 EXPECT_BEGIN(KERN_INFO, 3213 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 3214 3215 /* device should disable */ 3216 ret = of_unittest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY); 3217 3218 EXPECT_END(KERN_INFO, 3219 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status"); 3220 3221 if (ret) 3222 return; 3223 3224 unittest(1, "overlay test %d passed\n", 13); 3225 } 3226 3227 /* just check for i2c mux existence */ 3228 static void of_unittest_overlay_i2c_14(void) 3229 { 3230 } 3231 3232 static void __init of_unittest_overlay_i2c_15(void) 3233 { 3234 int ret; 3235 3236 /* device should enable */ 3237 EXPECT_BEGIN(KERN_INFO, 3238 "i2c i2c-1: Added multiplexed i2c bus 3"); 3239 3240 ret = of_unittest_apply_overlay_check(15, 15, 0, 1, I2C_OVERLAY); 3241 3242 EXPECT_END(KERN_INFO, 3243 "i2c i2c-1: Added multiplexed i2c bus 3"); 3244 3245 if (ret) 3246 return; 3247 3248 unittest(1, "overlay test %d passed\n", 15); 3249 } 3250 3251 #else 3252 3253 static inline void of_unittest_overlay_i2c_14(void) { } 3254 static inline void of_unittest_overlay_i2c_15(void) { } 3255 3256 #endif 3257 3258 static int of_notify(struct notifier_block *nb, unsigned long action, 3259 void *arg) 3260 { 3261 struct of_overlay_notify_data *nd = arg; 3262 struct device_node *found; 3263 int ret; 3264 3265 /* 3266 * For overlay_16 .. overlay_19, check that returning an error 3267 * works for each of the actions by setting an arbitrary return 3268 * error number that matches the test number. e.g. for unittest16, 3269 * ret = -EBUSY which is -16. 3270 * 3271 * OVERLAY_INFO() for the overlays is declared to expect the same 3272 * error number, so overlay_data_apply() will return no error. 3273 * 3274 * overlay_20 will return NOTIFY_DONE 3275 */ 3276 3277 ret = 0; 3278 of_node_get(nd->overlay); 3279 3280 switch (action) { 3281 3282 case OF_OVERLAY_PRE_APPLY: 3283 found = of_find_node_by_name(nd->overlay, "test-unittest16"); 3284 if (found) { 3285 of_node_put(found); 3286 ret = -EBUSY; 3287 } 3288 break; 3289 3290 case OF_OVERLAY_POST_APPLY: 3291 found = of_find_node_by_name(nd->overlay, "test-unittest17"); 3292 if (found) { 3293 of_node_put(found); 3294 ret = -EEXIST; 3295 } 3296 break; 3297 3298 case OF_OVERLAY_PRE_REMOVE: 3299 found = of_find_node_by_name(nd->overlay, "test-unittest18"); 3300 if (found) { 3301 of_node_put(found); 3302 ret = -EXDEV; 3303 } 3304 break; 3305 3306 case OF_OVERLAY_POST_REMOVE: 3307 found = of_find_node_by_name(nd->overlay, "test-unittest19"); 3308 if (found) { 3309 of_node_put(found); 3310 ret = -ENODEV; 3311 } 3312 break; 3313 3314 default: /* should not happen */ 3315 of_node_put(nd->overlay); 3316 ret = -EINVAL; 3317 break; 3318 } 3319 3320 if (ret) 3321 return notifier_from_errno(ret); 3322 3323 return NOTIFY_DONE; 3324 } 3325 3326 static struct notifier_block of_nb = { 3327 .notifier_call = of_notify, 3328 }; 3329 3330 static void __init of_unittest_overlay_notify(void) 3331 { 3332 int ovcs_id; 3333 int ret; 3334 3335 ret = of_overlay_notifier_register(&of_nb); 3336 unittest(!ret, 3337 "of_overlay_notifier_register() failed, ret = %d\n", ret); 3338 if (ret) 3339 return; 3340 3341 /* 3342 * The overlays are applied by overlay_data_apply() 3343 * instead of of_unittest_apply_overlay() so that they 3344 * will not be tracked. Thus they will not be removed 3345 * by of_unittest_remove_tracked_overlays(). 3346 * 3347 * Applying overlays 16 - 19 will each trigger an error for a 3348 * different action in of_notify(). 3349 * 3350 * Applying overlay 20 will not trigger any error in of_notify(). 3351 */ 3352 3353 /* --- overlay 16 --- */ 3354 3355 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus"); 3356 3357 unittest(overlay_data_apply("overlay_16", &ovcs_id), 3358 "test OF_OVERLAY_PRE_APPLY notify injected error\n"); 3359 3360 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus"); 3361 3362 unittest(ovcs_id, "ovcs_id not created for overlay_16\n"); 3363 3364 /* --- overlay 17 --- */ 3365 3366 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus"); 3367 3368 unittest(overlay_data_apply("overlay_17", &ovcs_id), 3369 "test OF_OVERLAY_POST_APPLY notify injected error\n"); 3370 3371 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus"); 3372 3373 unittest(ovcs_id, "ovcs_id not created for overlay_17\n"); 3374 3375 /* --- overlay 18 --- */ 3376 3377 unittest(overlay_data_apply("overlay_18", &ovcs_id), 3378 "OF_OVERLAY_PRE_REMOVE notify injected error\n"); 3379 3380 unittest(ovcs_id, "ovcs_id not created for overlay_18\n"); 3381 3382 if (ovcs_id) { 3383 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus"); 3384 3385 ret = of_overlay_remove(&ovcs_id); 3386 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus"); 3387 if (ret == -EXDEV) { 3388 /* 3389 * change set ovcs_id should still exist 3390 */ 3391 unittest(1, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE\n"); 3392 } else { 3393 unittest(0, "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE not returned\n"); 3394 } 3395 } else { 3396 unittest(1, "ovcs_id not created for overlay_18\n"); 3397 } 3398 3399 unittest(ovcs_id, "ovcs_id removed for overlay_18\n"); 3400 3401 /* --- overlay 19 --- */ 3402 3403 unittest(overlay_data_apply("overlay_19", &ovcs_id), 3404 "OF_OVERLAY_POST_REMOVE notify injected error\n"); 3405 3406 unittest(ovcs_id, "ovcs_id not created for overlay_19\n"); 3407 3408 if (ovcs_id) { 3409 EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus"); 3410 ret = of_overlay_remove(&ovcs_id); 3411 EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus"); 3412 if (ret == -ENODEV) 3413 unittest(1, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE\n"); 3414 else 3415 unittest(0, "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE not returned\n"); 3416 } else { 3417 unittest(1, "ovcs_id removed for overlay_19\n"); 3418 } 3419 3420 unittest(!ovcs_id, "changeset ovcs_id = %d not removed for overlay_19\n", 3421 ovcs_id); 3422 3423 /* --- overlay 20 --- */ 3424 3425 unittest(overlay_data_apply("overlay_20", &ovcs_id), 3426 "overlay notify no injected error\n"); 3427 3428 if (ovcs_id) { 3429 ret = of_overlay_remove(&ovcs_id); 3430 if (ret) 3431 unittest(1, "overlay_20 failed to be destroyed, ret = %d\n", 3432 ret); 3433 } else { 3434 unittest(1, "ovcs_id not created for overlay_20\n"); 3435 } 3436 3437 unittest(!of_overlay_notifier_unregister(&of_nb), 3438 "of_overlay_notifier_unregister() failed, ret = %d\n", ret); 3439 } 3440 3441 static void __init of_unittest_overlay(void) 3442 { 3443 struct device_node *bus_np = NULL; 3444 unsigned int i; 3445 3446 if (platform_driver_register(&unittest_driver)) { 3447 unittest(0, "could not register unittest driver\n"); 3448 goto out; 3449 } 3450 3451 bus_np = of_find_node_by_path(bus_path); 3452 if (bus_np == NULL) { 3453 unittest(0, "could not find bus_path \"%s\"\n", bus_path); 3454 goto out; 3455 } 3456 3457 if (of_platform_default_populate(bus_np, NULL, NULL)) { 3458 unittest(0, "could not populate bus @ \"%s\"\n", bus_path); 3459 goto out; 3460 } 3461 3462 if (!of_unittest_device_exists(100, PDEV_OVERLAY)) { 3463 unittest(0, "could not find unittest0 @ \"%s\"\n", 3464 unittest_path(100, PDEV_OVERLAY)); 3465 goto out; 3466 } 3467 3468 if (of_unittest_device_exists(101, PDEV_OVERLAY)) { 3469 unittest(0, "unittest1 @ \"%s\" should not exist\n", 3470 unittest_path(101, PDEV_OVERLAY)); 3471 goto out; 3472 } 3473 3474 unittest(1, "basic infrastructure of overlays passed"); 3475 3476 /* tests in sequence */ 3477 of_unittest_overlay_0(); 3478 of_unittest_overlay_1(); 3479 of_unittest_overlay_2(); 3480 of_unittest_overlay_3(); 3481 of_unittest_overlay_4(); 3482 for (i = 0; i < 3; i++) 3483 of_unittest_overlay_5(); 3484 of_unittest_overlay_6(); 3485 of_unittest_overlay_8(); 3486 3487 of_unittest_overlay_10(); 3488 of_unittest_overlay_11(); 3489 3490 #if IS_BUILTIN(CONFIG_I2C) 3491 if (unittest(of_unittest_overlay_i2c_init() == 0, "i2c init failed\n")) 3492 goto out; 3493 3494 of_unittest_overlay_i2c_12(); 3495 of_unittest_overlay_i2c_13(); 3496 of_unittest_overlay_i2c_14(); 3497 of_unittest_overlay_i2c_15(); 3498 3499 of_unittest_overlay_i2c_cleanup(); 3500 #endif 3501 3502 of_unittest_overlay_gpio(); 3503 3504 of_unittest_remove_tracked_overlays(); 3505 3506 of_unittest_overlay_notify(); 3507 3508 out: 3509 of_node_put(bus_np); 3510 } 3511 3512 #else 3513 static inline void __init of_unittest_overlay(void) { } 3514 #endif 3515 3516 static void __init of_unittest_lifecycle(void) 3517 { 3518 #ifdef CONFIG_OF_DYNAMIC 3519 unsigned int refcount; 3520 int found_refcount_one = 0; 3521 int put_count = 0; 3522 struct device_node *np; 3523 struct device_node *prev_sibling, *next_sibling; 3524 const char *refcount_path = "/testcase-data/refcount-node"; 3525 const char *refcount_parent_path = "/testcase-data"; 3526 3527 /* 3528 * Node lifecycle tests, non-dynamic node: 3529 * 3530 * - Decrementing refcount to zero via of_node_put() should cause the 3531 * attempt to free the node memory by of_node_release() to fail 3532 * because the node is not a dynamic node. 3533 * 3534 * - Decrementing refcount past zero should result in additional 3535 * errors reported. 3536 */ 3537 3538 np = of_find_node_by_path(refcount_path); 3539 unittest(np, "find refcount_path \"%s\"\n", refcount_path); 3540 if (np == NULL) 3541 goto out_skip_tests; 3542 3543 while (!found_refcount_one) { 3544 3545 if (put_count++ > 10) { 3546 unittest(0, "guardrail to avoid infinite loop\n"); 3547 goto out_skip_tests; 3548 } 3549 3550 refcount = kref_read(&np->kobj.kref); 3551 if (refcount == 1) 3552 found_refcount_one = 1; 3553 else 3554 of_node_put(np); 3555 } 3556 3557 EXPECT_BEGIN(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node"); 3558 3559 /* 3560 * refcount is now one, decrementing to zero will result in a call to 3561 * of_node_release() to free the node's memory, which should result 3562 * in an error 3563 */ 3564 unittest(1, "/testcase-data/refcount-node is one"); 3565 of_node_put(np); 3566 3567 EXPECT_END(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node"); 3568 3569 3570 /* 3571 * expect stack trace for subsequent of_node_put(): 3572 * __refcount_sub_and_test() calls: 3573 * refcount_warn_saturate(r, REFCOUNT_SUB_UAF) 3574 * 3575 * Not capturing entire WARN_ONCE() trace with EXPECT_*(), just 3576 * the first three lines, and the last line. 3577 */ 3578 EXPECT_BEGIN(KERN_INFO, "------------[ cut here ]------------"); 3579 EXPECT_BEGIN(KERN_INFO, "WARNING: <<all>>"); 3580 EXPECT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free."); 3581 EXPECT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---"); 3582 3583 /* refcount is now zero, this should fail */ 3584 unittest(1, "/testcase-data/refcount-node is zero"); 3585 of_node_put(np); 3586 3587 EXPECT_END(KERN_INFO, "---[ end trace <<int>> ]---"); 3588 EXPECT_END(KERN_INFO, "refcount_t: underflow; use-after-free."); 3589 EXPECT_END(KERN_INFO, "WARNING: <<all>>"); 3590 EXPECT_END(KERN_INFO, "------------[ cut here ]------------"); 3591 3592 /* 3593 * Q. do we expect to get yet another warning? 3594 * A. no, the WARNING is from WARN_ONCE() 3595 */ 3596 EXPECT_NOT_BEGIN(KERN_INFO, "------------[ cut here ]------------"); 3597 EXPECT_NOT_BEGIN(KERN_INFO, "WARNING: <<all>>"); 3598 EXPECT_NOT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free."); 3599 EXPECT_NOT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---"); 3600 3601 unittest(1, "/testcase-data/refcount-node is zero, second time"); 3602 of_node_put(np); 3603 3604 EXPECT_NOT_END(KERN_INFO, "---[ end trace <<int>> ]---"); 3605 EXPECT_NOT_END(KERN_INFO, "refcount_t: underflow; use-after-free."); 3606 EXPECT_NOT_END(KERN_INFO, "WARNING: <<all>>"); 3607 EXPECT_NOT_END(KERN_INFO, "------------[ cut here ]------------"); 3608 3609 /* 3610 * refcount of zero will trigger stack traces from any further 3611 * attempt to of_node_get() node "refcount-node". One example of 3612 * this is where of_unittest_check_node_linkage() will recursively 3613 * scan the tree, with 'for_each_child_of_node()' doing an 3614 * of_node_get() of the children of a node. 3615 * 3616 * Prevent the stack trace by removing node "refcount-node" from 3617 * its parent's child list. 3618 * 3619 * WARNING: EVIL, EVIL, EVIL: 3620 * 3621 * Directly manipulate the child list of node /testcase-data to 3622 * remove child refcount-node. This is ignoring all proper methods 3623 * of removing a child and will leak a small amount of memory. 3624 */ 3625 3626 np = of_find_node_by_path(refcount_parent_path); 3627 unittest(np, "find refcount_parent_path \"%s\"\n", refcount_parent_path); 3628 unittest(np, "ERROR: devicetree live tree left in a 'bad state' if test fail\n"); 3629 if (np == NULL) 3630 return; 3631 3632 prev_sibling = np->child; 3633 next_sibling = prev_sibling->sibling; 3634 if (!strcmp(prev_sibling->full_name, "refcount-node")) { 3635 np->child = next_sibling; 3636 next_sibling = next_sibling->sibling; 3637 } 3638 while (next_sibling) { 3639 if (!strcmp(next_sibling->full_name, "refcount-node")) 3640 prev_sibling->sibling = next_sibling->sibling; 3641 prev_sibling = next_sibling; 3642 next_sibling = next_sibling->sibling; 3643 } 3644 of_node_put(np); 3645 3646 return; 3647 3648 out_skip_tests: 3649 #endif 3650 unittest(0, "One or more lifecycle tests skipped\n"); 3651 } 3652 3653 #ifdef CONFIG_OF_OVERLAY 3654 3655 /* 3656 * __dtbo_##overlay_name##_begin[] and __dtbo_##overlay_name##_end[] are 3657 * created by cmd_wrap_S_dtbo in scripts/Makefile.dtbs 3658 */ 3659 3660 #define OVERLAY_INFO_EXTERN(overlay_name) \ 3661 extern uint8_t __dtbo_##overlay_name##_begin[]; \ 3662 extern uint8_t __dtbo_##overlay_name##_end[] 3663 3664 #define OVERLAY_INFO(overlay_name, expected, expected_remove) \ 3665 { .dtbo_begin = __dtbo_##overlay_name##_begin, \ 3666 .dtbo_end = __dtbo_##overlay_name##_end, \ 3667 .expected_result = expected, \ 3668 .expected_result_remove = expected_remove, \ 3669 .name = #overlay_name, \ 3670 } 3671 3672 struct overlay_info { 3673 uint8_t *dtbo_begin; 3674 uint8_t *dtbo_end; 3675 int expected_result; 3676 int expected_result_remove; /* if apply failed */ 3677 int ovcs_id; 3678 char *name; 3679 }; 3680 3681 OVERLAY_INFO_EXTERN(overlay_base); 3682 OVERLAY_INFO_EXTERN(overlay); 3683 OVERLAY_INFO_EXTERN(overlay_0); 3684 OVERLAY_INFO_EXTERN(overlay_1); 3685 OVERLAY_INFO_EXTERN(overlay_2); 3686 OVERLAY_INFO_EXTERN(overlay_3); 3687 OVERLAY_INFO_EXTERN(overlay_4); 3688 OVERLAY_INFO_EXTERN(overlay_5); 3689 OVERLAY_INFO_EXTERN(overlay_6); 3690 OVERLAY_INFO_EXTERN(overlay_7); 3691 OVERLAY_INFO_EXTERN(overlay_8); 3692 OVERLAY_INFO_EXTERN(overlay_9); 3693 OVERLAY_INFO_EXTERN(overlay_10); 3694 OVERLAY_INFO_EXTERN(overlay_11); 3695 OVERLAY_INFO_EXTERN(overlay_12); 3696 OVERLAY_INFO_EXTERN(overlay_13); 3697 OVERLAY_INFO_EXTERN(overlay_15); 3698 OVERLAY_INFO_EXTERN(overlay_16); 3699 OVERLAY_INFO_EXTERN(overlay_17); 3700 OVERLAY_INFO_EXTERN(overlay_18); 3701 OVERLAY_INFO_EXTERN(overlay_19); 3702 OVERLAY_INFO_EXTERN(overlay_20); 3703 OVERLAY_INFO_EXTERN(overlay_gpio_01); 3704 OVERLAY_INFO_EXTERN(overlay_gpio_02a); 3705 OVERLAY_INFO_EXTERN(overlay_gpio_02b); 3706 OVERLAY_INFO_EXTERN(overlay_gpio_03); 3707 OVERLAY_INFO_EXTERN(overlay_gpio_04a); 3708 OVERLAY_INFO_EXTERN(overlay_gpio_04b); 3709 OVERLAY_INFO_EXTERN(overlay_pci_node); 3710 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); 3711 OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop); 3712 OVERLAY_INFO_EXTERN(overlay_bad_phandle); 3713 OVERLAY_INFO_EXTERN(overlay_bad_symbol); 3714 OVERLAY_INFO_EXTERN(overlay_bad_unresolved); 3715 3716 /* entries found by name */ 3717 static struct overlay_info overlays[] = { 3718 OVERLAY_INFO(overlay_base, -9999, 0), 3719 OVERLAY_INFO(overlay, 0, 0), 3720 OVERLAY_INFO(overlay_0, 0, 0), 3721 OVERLAY_INFO(overlay_1, 0, 0), 3722 OVERLAY_INFO(overlay_2, 0, 0), 3723 OVERLAY_INFO(overlay_3, 0, 0), 3724 OVERLAY_INFO(overlay_4, 0, 0), 3725 OVERLAY_INFO(overlay_5, 0, 0), 3726 OVERLAY_INFO(overlay_6, 0, 0), 3727 OVERLAY_INFO(overlay_7, 0, 0), 3728 OVERLAY_INFO(overlay_8, 0, 0), 3729 OVERLAY_INFO(overlay_9, 0, 0), 3730 OVERLAY_INFO(overlay_10, 0, 0), 3731 OVERLAY_INFO(overlay_11, 0, 0), 3732 OVERLAY_INFO(overlay_12, 0, 0), 3733 OVERLAY_INFO(overlay_13, 0, 0), 3734 OVERLAY_INFO(overlay_15, 0, 0), 3735 OVERLAY_INFO(overlay_16, -EBUSY, 0), 3736 OVERLAY_INFO(overlay_17, -EEXIST, 0), 3737 OVERLAY_INFO(overlay_18, 0, 0), 3738 OVERLAY_INFO(overlay_19, 0, 0), 3739 OVERLAY_INFO(overlay_20, 0, 0), 3740 OVERLAY_INFO(overlay_gpio_01, 0, 0), 3741 OVERLAY_INFO(overlay_gpio_02a, 0, 0), 3742 OVERLAY_INFO(overlay_gpio_02b, 0, 0), 3743 OVERLAY_INFO(overlay_gpio_03, 0, 0), 3744 OVERLAY_INFO(overlay_gpio_04a, 0, 0), 3745 OVERLAY_INFO(overlay_gpio_04b, 0, 0), 3746 OVERLAY_INFO(overlay_pci_node, 0, 0), 3747 OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL, -ENODEV), 3748 OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL, -ENODEV), 3749 OVERLAY_INFO(overlay_bad_phandle, -EINVAL, 0), 3750 OVERLAY_INFO(overlay_bad_symbol, -EINVAL, -ENODEV), 3751 OVERLAY_INFO(overlay_bad_unresolved, -EINVAL, 0), 3752 /* end marker */ 3753 { } 3754 }; 3755 3756 static struct device_node *overlay_base_root; 3757 3758 static void * __init dt_alloc_memory(u64 size, u64 align) 3759 { 3760 return memblock_alloc_or_panic(size, align); 3761 } 3762 3763 /* 3764 * Create base device tree for the overlay unittest. 3765 * 3766 * This is called from very early boot code. 3767 * 3768 * Do as much as possible the same way as done in __unflatten_device_tree 3769 * and other early boot steps for the normal FDT so that the overlay base 3770 * unflattened tree will have the same characteristics as the real tree 3771 * (such as having memory allocated by the early allocator). The goal 3772 * is to test "the real thing" as much as possible, and test "test setup 3773 * code" as little as possible. 3774 * 3775 * Have to stop before resolving phandles, because that uses kmalloc. 3776 */ 3777 void __init unittest_unflatten_overlay_base(void) 3778 { 3779 struct overlay_info *info; 3780 u32 data_size; 3781 void *new_fdt; 3782 u32 size; 3783 int found = 0; 3784 const char *overlay_name = "overlay_base"; 3785 3786 for (info = overlays; info && info->name; info++) { 3787 if (!strcmp(overlay_name, info->name)) { 3788 found = 1; 3789 break; 3790 } 3791 } 3792 if (!found) { 3793 pr_err("no overlay data for %s\n", overlay_name); 3794 return; 3795 } 3796 3797 info = &overlays[0]; 3798 3799 if (info->expected_result != -9999) { 3800 pr_err("No dtb 'overlay_base' to attach\n"); 3801 return; 3802 } 3803 3804 data_size = info->dtbo_end - info->dtbo_begin; 3805 if (!data_size) { 3806 pr_err("No dtb 'overlay_base' to attach\n"); 3807 return; 3808 } 3809 3810 size = fdt_totalsize(info->dtbo_begin); 3811 if (size != data_size) { 3812 pr_err("dtb 'overlay_base' header totalsize != actual size"); 3813 return; 3814 } 3815 3816 new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE)); 3817 if (!new_fdt) { 3818 pr_err("alloc for dtb 'overlay_base' failed"); 3819 return; 3820 } 3821 3822 memcpy(new_fdt, info->dtbo_begin, size); 3823 3824 __unflatten_device_tree(new_fdt, NULL, &overlay_base_root, 3825 dt_alloc_memory, true); 3826 } 3827 3828 /* 3829 * The purpose of of_unittest_overlay_data_add is to add an 3830 * overlay in the normal fashion. This is a test of the whole 3831 * picture, instead of testing individual elements. 3832 * 3833 * A secondary purpose is to be able to verify that the contents of 3834 * /proc/device-tree/ contains the updated structure and values from 3835 * the overlay. That must be verified separately in user space. 3836 * 3837 * Return 0 on unexpected error. 3838 */ 3839 static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id) 3840 { 3841 struct overlay_info *info; 3842 int passed = 1; 3843 int found = 0; 3844 int ret, ret2; 3845 u32 size; 3846 3847 for (info = overlays; info && info->name; info++) { 3848 if (!strcmp(overlay_name, info->name)) { 3849 found = 1; 3850 break; 3851 } 3852 } 3853 if (!found) { 3854 pr_err("no overlay data for %s\n", overlay_name); 3855 return 0; 3856 } 3857 3858 size = info->dtbo_end - info->dtbo_begin; 3859 if (!size) 3860 pr_err("no overlay data for %s\n", overlay_name); 3861 3862 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &info->ovcs_id, 3863 NULL); 3864 if (ovcs_id) 3865 *ovcs_id = info->ovcs_id; 3866 if (ret < 0) 3867 goto out; 3868 3869 pr_debug("%s applied\n", overlay_name); 3870 3871 out: 3872 if (ret != info->expected_result) { 3873 pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n", 3874 info->expected_result, ret, overlay_name); 3875 passed = 0; 3876 } 3877 3878 if (ret < 0) { 3879 /* changeset may be partially applied */ 3880 ret2 = of_overlay_remove(&info->ovcs_id); 3881 if (ret2 != info->expected_result_remove) { 3882 pr_err("of_overlay_remove() expected %d, ret=%d, %s\n", 3883 info->expected_result_remove, ret2, 3884 overlay_name); 3885 passed = 0; 3886 } 3887 } 3888 3889 return passed; 3890 } 3891 3892 /* 3893 * The purpose of of_unittest_overlay_high_level is to add an overlay 3894 * in the normal fashion. This is a test of the whole picture, 3895 * instead of individual elements. 3896 * 3897 * The first part of the function is _not_ normal overlay usage; it is 3898 * finishing splicing the base overlay device tree into the live tree. 3899 */ 3900 static __init void of_unittest_overlay_high_level(void) 3901 { 3902 struct device_node *last_sibling; 3903 struct device_node *np; 3904 struct device_node *of_symbols; 3905 struct device_node *overlay_base_symbols; 3906 struct device_node **pprev; 3907 struct property *prop; 3908 int ret; 3909 3910 if (!overlay_base_root) { 3911 unittest(0, "overlay_base_root not initialized\n"); 3912 return; 3913 } 3914 3915 /* 3916 * Could not fixup phandles in unittest_unflatten_overlay_base() 3917 * because kmalloc() was not yet available. 3918 */ 3919 of_overlay_mutex_lock(); 3920 of_resolve_phandles(overlay_base_root); 3921 of_overlay_mutex_unlock(); 3922 3923 3924 /* 3925 * do not allow overlay_base to duplicate any node already in 3926 * tree, this greatly simplifies the code 3927 */ 3928 3929 /* 3930 * remove overlay_base_root node "__local_fixups", after 3931 * being used by of_resolve_phandles() 3932 */ 3933 pprev = &overlay_base_root->child; 3934 for (np = overlay_base_root->child; np; np = np->sibling) { 3935 if (of_node_name_eq(np, "__local_fixups__")) { 3936 *pprev = np->sibling; 3937 break; 3938 } 3939 pprev = &np->sibling; 3940 } 3941 3942 /* remove overlay_base_root node "__symbols__" if in live tree */ 3943 of_symbols = of_get_child_by_name(of_root, "__symbols__"); 3944 if (of_symbols) { 3945 /* will have to graft properties from node into live tree */ 3946 pprev = &overlay_base_root->child; 3947 for (np = overlay_base_root->child; np; np = np->sibling) { 3948 if (of_node_name_eq(np, "__symbols__")) { 3949 overlay_base_symbols = np; 3950 *pprev = np->sibling; 3951 break; 3952 } 3953 pprev = &np->sibling; 3954 } 3955 } 3956 3957 for_each_child_of_node(overlay_base_root, np) { 3958 struct device_node *base_child; 3959 for_each_child_of_node(of_root, base_child) { 3960 if (!strcmp(np->full_name, base_child->full_name)) { 3961 unittest(0, "illegal node name in overlay_base %pOFn", 3962 np); 3963 of_node_put(np); 3964 of_node_put(base_child); 3965 return; 3966 } 3967 } 3968 } 3969 3970 /* 3971 * overlay 'overlay_base' is not allowed to have root 3972 * properties, so only need to splice nodes into main device tree. 3973 * 3974 * root node of *overlay_base_root will not be freed, it is lost 3975 * memory. 3976 */ 3977 3978 for (np = overlay_base_root->child; np; np = np->sibling) 3979 np->parent = of_root; 3980 3981 mutex_lock(&of_mutex); 3982 3983 for (last_sibling = np = of_root->child; np; np = np->sibling) 3984 last_sibling = np; 3985 3986 if (last_sibling) 3987 last_sibling->sibling = overlay_base_root->child; 3988 else 3989 of_root->child = overlay_base_root->child; 3990 3991 for_each_of_allnodes_from(overlay_base_root, np) 3992 __of_attach_node_sysfs(np); 3993 3994 if (of_symbols) { 3995 struct property *new_prop; 3996 for_each_property_of_node(overlay_base_symbols, prop) { 3997 3998 new_prop = __of_prop_dup(prop, GFP_KERNEL); 3999 if (!new_prop) { 4000 unittest(0, "__of_prop_dup() of '%s' from overlay_base node __symbols__", 4001 prop->name); 4002 goto err_unlock; 4003 } 4004 if (__of_add_property(of_symbols, new_prop)) { 4005 __of_prop_free(new_prop); 4006 /* "name" auto-generated by unflatten */ 4007 if (!strcmp(prop->name, "name")) 4008 continue; 4009 unittest(0, "duplicate property '%s' in overlay_base node __symbols__", 4010 prop->name); 4011 goto err_unlock; 4012 } 4013 if (__of_add_property_sysfs(of_symbols, new_prop)) { 4014 unittest(0, "unable to add property '%s' in overlay_base node __symbols__ to sysfs", 4015 prop->name); 4016 goto err_unlock; 4017 } 4018 } 4019 } 4020 4021 mutex_unlock(&of_mutex); 4022 4023 4024 /* now do the normal overlay usage test */ 4025 4026 /* --- overlay --- */ 4027 4028 EXPECT_BEGIN(KERN_ERR, 4029 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 4030 EXPECT_BEGIN(KERN_ERR, 4031 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 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@30/incline-up"); 4034 EXPECT_BEGIN(KERN_ERR, 4035 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up"); 4036 EXPECT_BEGIN(KERN_ERR, 4037 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 4038 EXPECT_BEGIN(KERN_ERR, 4039 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 4040 EXPECT_BEGIN(KERN_ERR, 4041 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 4042 EXPECT_BEGIN(KERN_ERR, 4043 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 4044 EXPECT_BEGIN(KERN_ERR, 4045 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 4046 EXPECT_BEGIN(KERN_ERR, 4047 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 4048 EXPECT_BEGIN(KERN_ERR, 4049 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 4050 4051 ret = overlay_data_apply("overlay", NULL); 4052 4053 EXPECT_END(KERN_ERR, 4054 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right"); 4055 EXPECT_END(KERN_ERR, 4056 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left"); 4057 EXPECT_END(KERN_ERR, 4058 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200"); 4059 EXPECT_END(KERN_ERR, 4060 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2"); 4061 EXPECT_END(KERN_ERR, 4062 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate"); 4063 EXPECT_END(KERN_ERR, 4064 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color"); 4065 EXPECT_END(KERN_ERR, 4066 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status"); 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@40/incline-up"); 4069 EXPECT_END(KERN_ERR, 4070 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up"); 4071 EXPECT_END(KERN_ERR, 4072 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status"); 4073 EXPECT_END(KERN_ERR, 4074 "OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status"); 4075 4076 unittest(ret, "Adding overlay 'overlay' failed\n"); 4077 4078 /* --- overlay_bad_add_dup_node --- */ 4079 4080 EXPECT_BEGIN(KERN_ERR, 4081 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 4082 EXPECT_BEGIN(KERN_ERR, 4083 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 4084 EXPECT_BEGIN(KERN_ERR, 4085 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name"); 4086 EXPECT_BEGIN(KERN_ERR, 4087 "OF: Error reverting changeset (-19)"); 4088 4089 unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), 4090 "Adding overlay 'overlay_bad_add_dup_node' failed\n"); 4091 4092 EXPECT_END(KERN_ERR, 4093 "OF: Error reverting changeset (-19)"); 4094 EXPECT_END(KERN_ERR, 4095 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name"); 4096 EXPECT_END(KERN_ERR, 4097 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name"); 4098 EXPECT_END(KERN_ERR, 4099 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller"); 4100 4101 /* --- overlay_bad_add_dup_prop --- */ 4102 4103 EXPECT_BEGIN(KERN_ERR, 4104 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 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/rpm_avail"); 4107 EXPECT_BEGIN(KERN_ERR, 4108 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name"); 4109 EXPECT_BEGIN(KERN_ERR, 4110 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name"); 4111 EXPECT_BEGIN(KERN_ERR, 4112 "OF: Error reverting changeset (-19)"); 4113 4114 unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL), 4115 "Adding overlay 'overlay_bad_add_dup_prop' failed\n"); 4116 4117 EXPECT_END(KERN_ERR, 4118 "OF: Error reverting changeset (-19)"); 4119 EXPECT_END(KERN_ERR, 4120 "OF: changeset: apply failed: REMOVE_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/name"); 4123 EXPECT_END(KERN_ERR, 4124 "OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail"); 4125 EXPECT_END(KERN_ERR, 4126 "OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric"); 4127 4128 /* --- overlay_bad_phandle --- */ 4129 4130 unittest(overlay_data_apply("overlay_bad_phandle", NULL), 4131 "Adding overlay 'overlay_bad_phandle' failed\n"); 4132 4133 /* --- overlay_bad_symbol --- */ 4134 4135 EXPECT_BEGIN(KERN_ERR, 4136 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name"); 4137 EXPECT_BEGIN(KERN_ERR, 4138 "OF: Error reverting changeset (-19)"); 4139 4140 unittest(overlay_data_apply("overlay_bad_symbol", NULL), 4141 "Adding overlay 'overlay_bad_symbol' failed\n"); 4142 4143 EXPECT_END(KERN_ERR, 4144 "OF: Error reverting changeset (-19)"); 4145 EXPECT_END(KERN_ERR, 4146 "OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name"); 4147 4148 /* --- overlay_bad_unresolved --- */ 4149 4150 EXPECT_BEGIN(KERN_ERR, 4151 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table"); 4152 EXPECT_BEGIN(KERN_ERR, 4153 "OF: resolver: overlay phandle fixup failed: -22"); 4154 4155 unittest(overlay_data_apply("overlay_bad_unresolved", NULL), 4156 "Adding overlay 'overlay_bad_unresolved' failed\n"); 4157 4158 EXPECT_END(KERN_ERR, 4159 "OF: resolver: overlay phandle fixup failed: -22"); 4160 EXPECT_END(KERN_ERR, 4161 "OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table"); 4162 4163 return; 4164 4165 err_unlock: 4166 mutex_unlock(&of_mutex); 4167 } 4168 4169 static int of_unittest_pci_dev_num; 4170 static int of_unittest_pci_child_num; 4171 4172 /* 4173 * PCI device tree node test driver 4174 */ 4175 static const struct pci_device_id testdrv_pci_ids[] = { 4176 { PCI_DEVICE(PCI_VENDOR_ID_REDHAT, 0x5), }, /* PCI_VENDOR_ID_REDHAT */ 4177 { 0, } 4178 }; 4179 4180 static int testdrv_probe(struct pci_dev *pdev, const struct pci_device_id *id) 4181 { 4182 struct overlay_info *info; 4183 struct device_node *dn; 4184 int ret, ovcs_id; 4185 u32 size; 4186 4187 dn = pdev->dev.of_node; 4188 if (!dn) { 4189 dev_err(&pdev->dev, "does not find bus endpoint"); 4190 return -EINVAL; 4191 } 4192 4193 for (info = overlays; info && info->name; info++) { 4194 if (!strcmp(info->name, "overlay_pci_node")) 4195 break; 4196 } 4197 if (!info || !info->name) { 4198 dev_err(&pdev->dev, "no overlay data for overlay_pci_node"); 4199 return -ENODEV; 4200 } 4201 4202 size = info->dtbo_end - info->dtbo_begin; 4203 ret = of_overlay_fdt_apply(info->dtbo_begin, size, &ovcs_id, dn); 4204 of_node_put(dn); 4205 if (ret) 4206 return ret; 4207 4208 of_platform_default_populate(dn, NULL, &pdev->dev); 4209 pci_set_drvdata(pdev, (void *)(uintptr_t)ovcs_id); 4210 4211 return 0; 4212 } 4213 4214 static void testdrv_remove(struct pci_dev *pdev) 4215 { 4216 int ovcs_id = (int)(uintptr_t)pci_get_drvdata(pdev); 4217 4218 of_platform_depopulate(&pdev->dev); 4219 of_overlay_remove(&ovcs_id); 4220 } 4221 4222 static struct pci_driver testdrv_driver = { 4223 .name = "pci_dt_testdrv", 4224 .id_table = testdrv_pci_ids, 4225 .probe = testdrv_probe, 4226 .remove = testdrv_remove, 4227 }; 4228 4229 static int unittest_pci_probe(struct platform_device *pdev) 4230 { 4231 struct resource *res; 4232 struct device *dev; 4233 u64 exp_addr; 4234 4235 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 4236 if (!res) 4237 return -ENODEV; 4238 4239 dev = &pdev->dev; 4240 while (dev && !dev_is_pci(dev)) 4241 dev = dev->parent; 4242 if (!dev) { 4243 pr_err("unable to find parent device\n"); 4244 return -ENODEV; 4245 } 4246 4247 exp_addr = pci_resource_start(to_pci_dev(dev), 0) + 0x100; 4248 unittest(res->start == exp_addr, "Incorrect translated address %llx, expected %llx\n", 4249 (u64)res->start, exp_addr); 4250 4251 of_unittest_pci_child_num++; 4252 4253 return 0; 4254 } 4255 4256 static const struct of_device_id unittest_pci_of_match[] = { 4257 { .compatible = "unittest-pci" }, 4258 { } 4259 }; 4260 4261 static struct platform_driver unittest_pci_driver = { 4262 .probe = unittest_pci_probe, 4263 .driver = { 4264 .name = "unittest-pci", 4265 .of_match_table = unittest_pci_of_match, 4266 }, 4267 }; 4268 4269 static int of_unittest_pci_node_verify(struct pci_dev *pdev, bool add) 4270 { 4271 struct device_node *pnp, *np = NULL; 4272 struct device *child_dev; 4273 char *path = NULL; 4274 const __be32 *reg; 4275 int rc = 0; 4276 4277 pnp = pdev->dev.of_node; 4278 unittest(pnp, "Failed creating PCI dt node\n"); 4279 if (!pnp) 4280 return -ENODEV; 4281 4282 if (add) { 4283 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0/unittest-pci@100", pnp); 4284 np = of_find_node_by_path(path); 4285 unittest(np, "Failed to get unittest-pci node under PCI node\n"); 4286 if (!np) { 4287 rc = -ENODEV; 4288 goto failed; 4289 } 4290 4291 reg = of_get_property(np, "reg", NULL); 4292 unittest(reg, "Failed to get reg property\n"); 4293 if (!reg) 4294 rc = -ENODEV; 4295 } else { 4296 path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0", pnp); 4297 np = of_find_node_by_path(path); 4298 unittest(!np, "Child device tree node is not removed\n"); 4299 child_dev = device_find_any_child(&pdev->dev); 4300 unittest(!child_dev, "Child device is not removed\n"); 4301 } 4302 4303 failed: 4304 kfree(path); 4305 if (np) 4306 of_node_put(np); 4307 4308 return rc; 4309 } 4310 4311 static void __init of_unittest_pci_node(void) 4312 { 4313 struct pci_dev *pdev = NULL; 4314 int rc; 4315 4316 if (!IS_ENABLED(CONFIG_PCI_DYNAMIC_OF_NODES)) 4317 return; 4318 4319 rc = pci_register_driver(&testdrv_driver); 4320 unittest(!rc, "Failed to register pci test driver; rc = %d\n", rc); 4321 if (rc) 4322 return; 4323 4324 rc = platform_driver_register(&unittest_pci_driver); 4325 if (unittest(!rc, "Failed to register unittest pci driver\n")) { 4326 pci_unregister_driver(&testdrv_driver); 4327 return; 4328 } 4329 4330 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL) { 4331 of_unittest_pci_node_verify(pdev, true); 4332 of_unittest_pci_dev_num++; 4333 } 4334 if (pdev) 4335 pci_dev_put(pdev); 4336 4337 unittest(of_unittest_pci_dev_num, 4338 "No test PCI device been found. Please run QEMU with '-device pci-testdev'\n"); 4339 unittest(of_unittest_pci_dev_num == of_unittest_pci_child_num, 4340 "Child device number %d is not expected %d", of_unittest_pci_child_num, 4341 of_unittest_pci_dev_num); 4342 4343 platform_driver_unregister(&unittest_pci_driver); 4344 pci_unregister_driver(&testdrv_driver); 4345 4346 while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0x5, pdev)) != NULL) 4347 of_unittest_pci_node_verify(pdev, false); 4348 if (pdev) 4349 pci_dev_put(pdev); 4350 } 4351 #else 4352 4353 static inline __init void of_unittest_overlay_high_level(void) {} 4354 static inline __init void of_unittest_pci_node(void) { } 4355 4356 #endif 4357 4358 static int __init of_unittest(void) 4359 { 4360 struct device_node *np; 4361 int res; 4362 4363 pr_info("start of unittest - you will see error messages\n"); 4364 4365 /* Taint the kernel so we know we've run tests. */ 4366 add_taint(TAINT_TEST, LOCKDEP_STILL_OK); 4367 4368 /* adding data for unittest */ 4369 res = unittest_data_add(); 4370 if (res) 4371 return res; 4372 if (!of_aliases) 4373 of_aliases = of_find_node_by_path("/aliases"); 4374 4375 np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a"); 4376 if (!np) { 4377 pr_info("No testcase data in device tree; not running tests\n"); 4378 return 0; 4379 } 4380 of_node_put(np); 4381 4382 of_unittest_check_tree_linkage(); 4383 of_unittest_check_phandles(); 4384 of_unittest_find_node_by_name(); 4385 of_unittest_dynamic(); 4386 of_unittest_parse_phandle_with_args(); 4387 of_unittest_parse_phandle_with_args_map(); 4388 of_unittest_printf(); 4389 of_unittest_property_string(); 4390 of_unittest_property_copy(); 4391 of_unittest_changeset(); 4392 of_unittest_changeset_prop(); 4393 of_unittest_parse_interrupts(); 4394 of_unittest_parse_interrupts_extended(); 4395 of_unittest_irq_refcount(); 4396 of_unittest_dma_get_max_cpu_address(); 4397 of_unittest_parse_dma_ranges(); 4398 of_unittest_pci_dma_ranges(); 4399 of_unittest_pci_empty_dma_ranges(); 4400 of_unittest_bus_ranges(); 4401 of_unittest_bus_3cell_ranges(); 4402 of_unittest_reg(); 4403 of_unittest_translate_addr(); 4404 of_unittest_match_node(); 4405 of_unittest_platform_populate(); 4406 of_unittest_overlay(); 4407 of_unittest_lifecycle(); 4408 of_unittest_pci_node(); 4409 4410 /* Double check linkage after removing testcase data */ 4411 of_unittest_check_tree_linkage(); 4412 4413 of_unittest_overlay_high_level(); 4414 4415 pr_info("end of unittest - %i passed, %i failed\n", 4416 unittest_results.passed, unittest_results.failed); 4417 4418 return 0; 4419 } 4420 late_initcall(of_unittest); 4421