test/dm/core.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Tests for the core driver model code
   4  *
   5  * Copyright (c) 2013 Google, Inc
   6  */
   7
   8 #include <common.h>
   9 #include <errno.h>
  10 #include <dm.h>
  11 #include <fdtdec.h>
  12 #include <log.h>
  13 #include <malloc.h>
  14 #include <asm/global_data.h>
  15 #include <dm/device-internal.h>
  16 #include <dm/root.h>
  17 #include <dm/util.h>
  18 #include <dm/test.h>
  19 #include <dm/uclass-internal.h>
  20 #include <test/test.h>
  21 #include <test/ut.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 enum {
  26         TEST_INTVAL1            = 0,
  27         TEST_INTVAL2            = 3,
  28         TEST_INTVAL3            = 6,
  29         TEST_INTVAL_MANUAL      = 101112,
  30         TEST_INTVAL_PRE_RELOC   = 7,
  31 };
  32
  33 static const struct dm_test_pdata test_pdata[] = {
  34         { .ping_add             = TEST_INTVAL1, },
  35         { .ping_add             = TEST_INTVAL2, },
  36         { .ping_add             = TEST_INTVAL3, },
  37 };
  38
  39 static const struct dm_test_pdata test_pdata_manual = {
  40         .ping_add               = TEST_INTVAL_MANUAL,
  41 };
  42
  43 static const struct dm_test_pdata test_pdata_pre_reloc = {
  44         .ping_add               = TEST_INTVAL_PRE_RELOC,
  45 };
  46
  47 U_BOOT_DRVINFO(dm_test_info1) = {
  48         .name = "test_drv",
  49         .plat = &test_pdata[0],
  50 };
  51
  52 U_BOOT_DRVINFO(dm_test_info2) = {
  53         .name = "test_drv",
  54         .plat = &test_pdata[1],
  55 };
  56
  57 U_BOOT_DRVINFO(dm_test_info3) = {
  58         .name = "test_drv",
  59         .plat = &test_pdata[2],
  60 };
  61
  62 static struct driver_info driver_info_manual = {
  63         .name = "test_manual_drv",
  64         .plat = &test_pdata_manual,
  65 };
  66
  67 static struct driver_info driver_info_pre_reloc = {
  68         .name = "test_pre_reloc_drv",
  69         .plat = &test_pdata_pre_reloc,
  70 };
  71
  72 static struct driver_info driver_info_act_dma = {
  73         .name = "test_act_dma_drv",
  74 };
  75
  76 static struct driver_info driver_info_vital_clk = {
  77         .name = "test_vital_clk_drv",
  78 };
  79
  80 static struct driver_info driver_info_act_dma_vital_clk = {
  81         .name = "test_act_dma_vital_clk_drv",
  82 };
  83
  84 void dm_leak_check_start(struct unit_test_state *uts)
  85 {
  86         uts->start = mallinfo();
  87         if (!uts->start.uordblks)
  88                 puts("Warning: Please add '#define DEBUG' to the top of common/dlmalloc.c\n");
  89 }
  90
  91 int dm_leak_check_end(struct unit_test_state *uts)
  92 {
  93         struct mallinfo end;
  94         int id, diff;
  95
  96         /* Don't delete the root class, since we started with that */
  97         for (id = UCLASS_ROOT + 1; id < UCLASS_COUNT; id++) {
  98                 struct uclass *uc;
  99
 100                 uc = uclass_find(id);
 101                 if (!uc)
 102                         continue;
 103                 ut_assertok(uclass_destroy(uc));
 104         }
 105
 106         end = mallinfo();
 107         diff = end.uordblks - uts->start.uordblks;
 108         if (diff > 0)
 109                 printf("Leak: lost %#xd bytes\n", diff);
 110         else if (diff < 0)
 111                 printf("Leak: gained %#xd bytes\n", -diff);
 112         ut_asserteq(uts->start.uordblks, end.uordblks);
 113
 114         return 0;
 115 }
 116
 117 /* Test that binding with plat occurs correctly */
 118 static int dm_test_autobind(struct unit_test_state *uts)
 119 {
 120         struct udevice *dev;
 121
 122         /*
 123          * We should have a single class (UCLASS_ROOT) and a single root
 124          * device with no children.
 125          */
 126         ut_assert(uts->root);
 127         ut_asserteq(1, list_count_items(gd->uclass_root));
 128         ut_asserteq(0, list_count_items(&gd->dm_root->child_head));
 129         ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_POST_BIND]);
 130
 131         ut_assertok(dm_scan_plat(false));
 132
 133         /* We should have our test class now at least, plus more children */
 134         ut_assert(1 < list_count_items(gd->uclass_root));
 135         ut_assert(0 < list_count_items(&gd->dm_root->child_head));
 136
 137         /* Our 3 dm_test_infox children should be bound to the test uclass */
 138         ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_POST_BIND]);
 139
 140         /* No devices should be probed */
 141         list_for_each_entry(dev, &gd->dm_root->child_head, sibling_node)
 142                 ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
 143
 144         /* Our test driver should have been bound 3 times */
 145         ut_assert(dm_testdrv_op_count[DM_TEST_OP_BIND] == 3);
 146
 147         return 0;
 148 }
 149 DM_TEST(dm_test_autobind, 0);
 150
 151 /* Test that binding with uclass plat allocation occurs correctly */
 152 static int dm_test_autobind_uclass_pdata_alloc(struct unit_test_state *uts)
 153 {
 154         struct dm_test_perdev_uc_pdata *uc_pdata;
 155         struct udevice *dev;
 156         struct uclass *uc;
 157
 158         ut_assertok(uclass_get(UCLASS_TEST, &uc));
 159         ut_assert(uc);
 160
 161         /**
 162          * Test if test uclass driver requires allocation for the uclass
 163          * platform data and then check the dev->uclass_plat pointer.
 164          */
 165         ut_assert(uc->uc_drv->per_device_plat_auto);
 166
 167         for (uclass_find_first_device(UCLASS_TEST, &dev);
 168              dev;
 169              uclass_find_next_device(&dev)) {
 170                 ut_assertnonnull(dev);
 171
 172                 uc_pdata = dev_get_uclass_plat(dev);
 173                 ut_assert(uc_pdata);
 174         }
 175
 176         return 0;
 177 }
 178 DM_TEST(dm_test_autobind_uclass_pdata_alloc, UT_TESTF_SCAN_PDATA);
 179
 180 /* compare node names ignoring the unit address */
 181 static int dm_test_compare_node_name(struct unit_test_state *uts)
 182 {
 183         ofnode node;
 184
 185         node = ofnode_path("/mmio-bus@0");
 186         ut_assert(ofnode_valid(node));
 187         ut_assert(ofnode_name_eq(node, "mmio-bus"));
 188
 189         return 0;
 190 }
 191
 192 DM_TEST(dm_test_compare_node_name, UT_TESTF_SCAN_PDATA);
 193
 194 /* Test that binding with uclass plat setting occurs correctly */
 195 static int dm_test_autobind_uclass_pdata_valid(struct unit_test_state *uts)
 196 {
 197         struct dm_test_perdev_uc_pdata *uc_pdata;
 198         struct udevice *dev;
 199
 200         /**
 201          * In the test_postbind() method of test uclass driver, the uclass
 202          * platform data should be set to three test int values - test it.
 203          */
 204         for (uclass_find_first_device(UCLASS_TEST, &dev);
 205              dev;
 206              uclass_find_next_device(&dev)) {
 207                 ut_assertnonnull(dev);
 208
 209                 uc_pdata = dev_get_uclass_plat(dev);
 210                 ut_assert(uc_pdata);
 211                 ut_assert(uc_pdata->intval1 == TEST_UC_PDATA_INTVAL1);
 212                 ut_assert(uc_pdata->intval2 == TEST_UC_PDATA_INTVAL2);
 213                 ut_assert(uc_pdata->intval3 == TEST_UC_PDATA_INTVAL3);
 214         }
 215
 216         return 0;
 217 }
 218 DM_TEST(dm_test_autobind_uclass_pdata_valid, UT_TESTF_SCAN_PDATA);
 219
 220 /* Test that autoprobe finds all the expected devices */
 221 static int dm_test_autoprobe(struct unit_test_state *uts)
 222 {
 223         int expected_base_add;
 224         struct udevice *dev;
 225         struct uclass *uc;
 226         int i;
 227
 228         ut_assertok(uclass_get(UCLASS_TEST, &uc));
 229         ut_assert(uc);
 230
 231         ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
 232         ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_PRE_PROBE]);
 233         ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_POST_PROBE]);
 234
 235         /* The root device should not be activated until needed */
 236         ut_assert(dev_get_flags(uts->root) & DM_FLAG_ACTIVATED);
 237
 238         /*
 239          * We should be able to find the three test devices, and they should
 240          * all be activated as they are used (lazy activation, required by
 241          * U-Boot)
 242          */
 243         for (i = 0; i < 3; i++) {
 244                 ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
 245                 ut_assert(dev);
 246                 ut_assertf(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED),
 247                            "Driver %d/%s already activated", i, dev->name);
 248
 249                 /* This should activate it */
 250                 ut_assertok(uclass_get_device(UCLASS_TEST, i, &dev));
 251                 ut_assert(dev);
 252                 ut_assert(dev_get_flags(dev) & DM_FLAG_ACTIVATED);
 253
 254                 /* Activating a device should activate the root device */
 255                 if (!i)
 256                         ut_assert(dev_get_flags(uts->root) & DM_FLAG_ACTIVATED);
 257         }
 258
 259         /*
 260          * Our 3 dm_test_info children should be passed to pre_probe and
 261          * post_probe
 262          */
 263         ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_POST_PROBE]);
 264         ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_PRE_PROBE]);
 265
 266         /* Also we can check the per-device data */
 267         expected_base_add = 0;
 268         for (i = 0; i < 3; i++) {
 269                 struct dm_test_uclass_perdev_priv *priv;
 270                 struct dm_test_pdata *pdata;
 271
 272                 ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
 273                 ut_assert(dev);
 274
 275                 priv = dev_get_uclass_priv(dev);
 276                 ut_assert(priv);
 277                 ut_asserteq(expected_base_add, priv->base_add);
 278
 279                 pdata = dev_get_plat(dev);
 280                 expected_base_add += pdata->ping_add;
 281         }
 282
 283         return 0;
 284 }
 285 DM_TEST(dm_test_autoprobe, UT_TESTF_SCAN_PDATA);
 286
 287 /* Check that we see the correct plat in each device */
 288 static int dm_test_plat(struct unit_test_state *uts)
 289 {
 290         const struct dm_test_pdata *pdata;
 291         struct udevice *dev;
 292         int i;
 293
 294         for (i = 0; i < 3; i++) {
 295                 ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
 296                 ut_assert(dev);
 297                 pdata = dev_get_plat(dev);
 298                 ut_assert(pdata->ping_add == test_pdata[i].ping_add);
 299         }
 300
 301         return 0;
 302 }
 303 DM_TEST(dm_test_plat, UT_TESTF_SCAN_PDATA);
 304
 305 /* Test that we can bind, probe, remove, unbind a driver */
 306 static int dm_test_lifecycle(struct unit_test_state *uts)
 307 {
 308         int op_count[DM_TEST_OP_COUNT];
 309         struct udevice *dev, *test_dev;
 310         int start_dev_count, start_uc_count;
 311         int dev_count, uc_count;
 312         int pingret;
 313         int ret;
 314
 315         memcpy(op_count, dm_testdrv_op_count, sizeof(op_count));
 316
 317         dm_get_stats(&start_dev_count, &start_uc_count);
 318
 319         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_manual,
 320                                         &dev));
 321         ut_assert(dev);
 322         ut_assert(dm_testdrv_op_count[DM_TEST_OP_BIND]
 323                         == op_count[DM_TEST_OP_BIND] + 1);
 324         ut_assert(!dev_get_priv(dev));
 325
 326         /* We should have one more device */
 327         dm_get_stats(&dev_count, &uc_count);
 328         ut_asserteq(start_dev_count + 1, dev_count);
 329         ut_asserteq(start_uc_count, uc_count);
 330
 331         /* Probe the device - it should fail allocating private data */
 332         uts->force_fail_alloc = 1;
 333         ret = device_probe(dev);
 334         ut_assert(ret == -ENOMEM);
 335         ut_assert(dm_testdrv_op_count[DM_TEST_OP_PROBE]
 336                         == op_count[DM_TEST_OP_PROBE] + 1);
 337         ut_assert(!dev_get_priv(dev));
 338
 339         /* Try again without the alloc failure */
 340         uts->force_fail_alloc = 0;
 341         ut_assertok(device_probe(dev));
 342         ut_assert(dm_testdrv_op_count[DM_TEST_OP_PROBE]
 343                         == op_count[DM_TEST_OP_PROBE] + 2);
 344         ut_assert(dev_get_priv(dev));
 345
 346         /* This should be device 3 in the uclass */
 347         ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
 348         ut_assert(dev == test_dev);
 349
 350         /* Try ping */
 351         ut_assertok(test_ping(dev, 100, &pingret));
 352         ut_assert(pingret == 102);
 353
 354         /* Now remove device 3 */
 355         ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_PRE_REMOVE]);
 356         ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
 357         ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_PRE_REMOVE]);
 358
 359         ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
 360         ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_PRE_UNBIND]);
 361         ut_assertok(device_unbind(dev));
 362         ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
 363         ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_PRE_UNBIND]);
 364
 365         /* We should have one less device */
 366         dm_get_stats(&dev_count, &uc_count);
 367         ut_asserteq(start_dev_count, dev_count);
 368         ut_asserteq(start_uc_count, uc_count);
 369
 370         return 0;
 371 }
 372 DM_TEST(dm_test_lifecycle, UT_TESTF_SCAN_PDATA | UT_TESTF_PROBE_TEST);
 373
 374 /* Test that we can bind/unbind and the lists update correctly */
 375 static int dm_test_ordering(struct unit_test_state *uts)
 376 {
 377         struct udevice *dev, *dev_penultimate, *dev_last, *test_dev;
 378         int pingret;
 379
 380         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_manual,
 381                                         &dev));
 382         ut_assert(dev);
 383
 384         /* Bind two new devices (numbers 4 and 5) */
 385         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_manual,
 386                                         &dev_penultimate));
 387         ut_assert(dev_penultimate);
 388         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_manual,
 389                                         &dev_last));
 390         ut_assert(dev_last);
 391
 392         /* Now remove device 3 */
 393         ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
 394         ut_assertok(device_unbind(dev));
 395
 396         /* The device numbering should have shifted down one */
 397         ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
 398         ut_assert(dev_penultimate == test_dev);
 399         ut_assertok(uclass_find_device(UCLASS_TEST, 4, &test_dev));
 400         ut_assert(dev_last == test_dev);
 401
 402         /* Add back the original device 3, now in position 5 */
 403         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_manual,
 404                                         &dev));
 405         ut_assert(dev);
 406
 407         /* Try ping */
 408         ut_assertok(test_ping(dev, 100, &pingret));
 409         ut_assert(pingret == 102);
 410
 411         /* Remove 3 and 4 */
 412         ut_assertok(device_remove(dev_penultimate, DM_REMOVE_NORMAL));
 413         ut_assertok(device_unbind(dev_penultimate));
 414         ut_assertok(device_remove(dev_last, DM_REMOVE_NORMAL));
 415         ut_assertok(device_unbind(dev_last));
 416
 417         /* Our device should now be in position 3 */
 418         ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
 419         ut_assert(dev == test_dev);
 420
 421         /* Now remove device 3 */
 422         ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
 423         ut_assertok(device_unbind(dev));
 424
 425         return 0;
 426 }
 427 DM_TEST(dm_test_ordering, UT_TESTF_SCAN_PDATA);
 428
 429 /* Check that we can perform operations on a device (do a ping) */
 430 int dm_check_operations(struct unit_test_state *uts, struct udevice *dev,
 431                         uint32_t base, struct dm_test_priv *priv)
 432 {
 433         int expected;
 434         int pingret;
 435
 436         /* Getting the child device should allocate plat / priv */
 437         ut_assertok(testfdt_ping(dev, 10, &pingret));
 438         ut_assert(dev_get_priv(dev));
 439         ut_assert(dev_get_plat(dev));
 440
 441         expected = 10 + base;
 442         ut_asserteq(expected, pingret);
 443
 444         /* Do another ping */
 445         ut_assertok(testfdt_ping(dev, 20, &pingret));
 446         expected = 20 + base;
 447         ut_asserteq(expected, pingret);
 448
 449         /* Now check the ping_total */
 450         priv = dev_get_priv(dev);
 451         ut_asserteq(DM_TEST_START_TOTAL + 10 + 20 + base * 2,
 452                     priv->ping_total);
 453
 454         return 0;
 455 }
 456
 457 /* Check that we can perform operations on devices */
 458 static int dm_test_operations(struct unit_test_state *uts)
 459 {
 460         struct udevice *dev;
 461         int i;
 462
 463         /*
 464          * Now check that the ping adds are what we expect. This is using the
 465          * ping-add property in each node.
 466          */
 467         for (i = 0; i < ARRAY_SIZE(test_pdata); i++) {
 468                 uint32_t base;
 469
 470                 ut_assertok(uclass_get_device(UCLASS_TEST, i, &dev));
 471
 472                 /*
 473                  * Get the 'reg' property, which tells us what the ping add
 474                  * should be. We don't use the plat because we want
 475                  * to test the code that sets that up (testfdt_drv_probe()).
 476                  */
 477                 base = test_pdata[i].ping_add;
 478                 debug("dev=%d, base=%d\n", i, base);
 479
 480                 ut_assert(!dm_check_operations(uts, dev, base, dev_get_priv(dev)));
 481         }
 482
 483         return 0;
 484 }
 485 DM_TEST(dm_test_operations, UT_TESTF_SCAN_PDATA);
 486
 487 /* Remove all drivers and check that things work */
 488 static int dm_test_remove(struct unit_test_state *uts)
 489 {
 490         struct udevice *dev;
 491         int i;
 492
 493         for (i = 0; i < 3; i++) {
 494                 ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
 495                 ut_assert(dev);
 496                 ut_assertf(dev_get_flags(dev) & DM_FLAG_ACTIVATED,
 497                            "Driver %d/%s not activated", i, dev->name);
 498                 ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
 499                 ut_assertf(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED),
 500                            "Driver %d/%s should have deactivated", i,
 501                            dev->name);
 502                 ut_assert(!dev_get_priv(dev));
 503         }
 504
 505         return 0;
 506 }
 507 DM_TEST(dm_test_remove, UT_TESTF_SCAN_PDATA | UT_TESTF_PROBE_TEST);
 508
 509 /* Remove and recreate everything, check for memory leaks */
 510 static int dm_test_leak(struct unit_test_state *uts)
 511 {
 512         int i;
 513
 514         for (i = 0; i < 2; i++) {
 515                 struct udevice *dev;
 516                 int ret;
 517                 int id;
 518
 519                 dm_leak_check_start(uts);
 520
 521                 ut_assertok(dm_scan_plat(false));
 522                 ut_assertok(dm_scan_fdt(false));
 523
 524                 /* Scanning the uclass is enough to probe all the devices */
 525                 for (id = UCLASS_ROOT; id < UCLASS_COUNT; id++) {
 526                         for (ret = uclass_first_device(UCLASS_TEST, &dev);
 527                              dev;
 528                              ret = uclass_next_device(&dev))
 529                                 ;
 530                         ut_assertok(ret);
 531                 }
 532
 533                 ut_assertok(dm_leak_check_end(uts));
 534         }
 535
 536         return 0;
 537 }
 538 DM_TEST(dm_test_leak, 0);
 539
 540 /* Test uclass init/destroy methods */
 541 static int dm_test_uclass(struct unit_test_state *uts)
 542 {
 543         int dev_count, uc_count;
 544         struct uclass *uc;
 545
 546         /* We should have just the root device and uclass */
 547         dm_get_stats(&dev_count, &uc_count);
 548         ut_asserteq(1, dev_count);
 549         ut_asserteq(1, uc_count);
 550
 551         ut_assertok(uclass_get(UCLASS_TEST, &uc));
 552         ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
 553         ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_DESTROY]);
 554         ut_assert(uclass_get_priv(uc));
 555
 556         dm_get_stats(&dev_count, &uc_count);
 557         ut_asserteq(1, dev_count);
 558         ut_asserteq(2, uc_count);
 559
 560         ut_assertok(uclass_destroy(uc));
 561         ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
 562         ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_DESTROY]);
 563
 564         dm_get_stats(&dev_count, &uc_count);
 565         ut_asserteq(1, dev_count);
 566         ut_asserteq(1, uc_count);
 567
 568         return 0;
 569 }
 570 DM_TEST(dm_test_uclass, 0);
 571
 572 /**
 573  * create_children() - Create children of a parent node
 574  *
 575  * @dms:        Test system state
 576  * @parent:     Parent device
 577  * @count:      Number of children to create
 578  * @key:        Key value to put in first child. Subsequence children
 579  *              receive an incrementing value
 580  * @child:      If not NULL, then the child device pointers are written into
 581  *              this array.
 582  * Return: 0 if OK, -ve on error
 583  */
 584 static int create_children(struct unit_test_state *uts, struct udevice *parent,
 585                            int count, int key, struct udevice *child[])
 586 {
 587         struct udevice *dev;
 588         int i;
 589
 590         for (i = 0; i < count; i++) {
 591                 struct dm_test_pdata *pdata;
 592
 593                 ut_assertok(device_bind_by_name(parent, false,
 594                                                 &driver_info_manual, &dev));
 595                 pdata = calloc(1, sizeof(*pdata));
 596                 pdata->ping_add = key + i;
 597                 dev_set_plat(dev, pdata);
 598                 if (child)
 599                         child[i] = dev;
 600         }
 601
 602         return 0;
 603 }
 604
 605 #define NODE_COUNT      10
 606
 607 static int dm_test_children(struct unit_test_state *uts)
 608 {
 609         struct udevice *top[NODE_COUNT];
 610         struct udevice *child[NODE_COUNT];
 611         struct udevice *grandchild[NODE_COUNT];
 612         struct udevice *dev;
 613         int total;
 614         int ret;
 615         int i;
 616
 617         /* We don't care about the numbering for this test */
 618         uts->skip_post_probe = 1;
 619
 620         ut_assert(NODE_COUNT > 5);
 621
 622         /* First create 10 top-level children */
 623         ut_assertok(create_children(uts, uts->root, NODE_COUNT, 0, top));
 624
 625         /* Now a few have their own children */
 626         ut_assertok(create_children(uts, top[2], NODE_COUNT, 2, NULL));
 627         ut_assertok(create_children(uts, top[5], NODE_COUNT, 5, child));
 628
 629         /* And grandchildren */
 630         for (i = 0; i < NODE_COUNT; i++)
 631                 ut_assertok(create_children(uts, child[i], NODE_COUNT, 50 * i,
 632                                             i == 2 ? grandchild : NULL));
 633
 634         /* Check total number of devices */
 635         total = NODE_COUNT * (3 + NODE_COUNT);
 636         ut_asserteq(total, dm_testdrv_op_count[DM_TEST_OP_BIND]);
 637
 638         /* Try probing one of the grandchildren */
 639         ut_assertok(uclass_get_device(UCLASS_TEST,
 640                                       NODE_COUNT * 3 + 2 * NODE_COUNT, &dev));
 641         ut_asserteq_ptr(grandchild[0], dev);
 642
 643         /*
 644          * This should have probed the child and top node also, for a total
 645          * of 3 nodes.
 646          */
 647         ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_PROBE]);
 648
 649         /* Probe the other grandchildren */
 650         for (i = 1; i < NODE_COUNT; i++)
 651                 ut_assertok(device_probe(grandchild[i]));
 652
 653         ut_asserteq(2 + NODE_COUNT, dm_testdrv_op_count[DM_TEST_OP_PROBE]);
 654
 655         /* Probe everything */
 656         for (ret = uclass_first_device(UCLASS_TEST, &dev);
 657              dev;
 658              ret = uclass_next_device(&dev))
 659                 ;
 660         ut_assertok(ret);
 661
 662         ut_asserteq(total, dm_testdrv_op_count[DM_TEST_OP_PROBE]);
 663
 664         /* Remove a top-level child and check that the children are removed */
 665         ut_assertok(device_remove(top[2], DM_REMOVE_NORMAL));
 666         ut_asserteq(NODE_COUNT + 1, dm_testdrv_op_count[DM_TEST_OP_REMOVE]);
 667         dm_testdrv_op_count[DM_TEST_OP_REMOVE] = 0;
 668
 669         /* Try one with grandchildren */
 670         ut_assertok(uclass_get_device(UCLASS_TEST, 5, &dev));
 671         ut_asserteq_ptr(dev, top[5]);
 672         ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
 673         ut_asserteq(1 + NODE_COUNT * (1 + NODE_COUNT),
 674                     dm_testdrv_op_count[DM_TEST_OP_REMOVE]);
 675
 676         /* Try the same with unbind */
 677         ut_assertok(device_unbind(top[2]));
 678         ut_asserteq(NODE_COUNT + 1, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
 679         dm_testdrv_op_count[DM_TEST_OP_UNBIND] = 0;
 680
 681         /* Try one with grandchildren */
 682         ut_assertok(uclass_get_device(UCLASS_TEST, 5, &dev));
 683         ut_asserteq_ptr(dev, top[6]);
 684         ut_assertok(device_unbind(top[5]));
 685         ut_asserteq(1 + NODE_COUNT * (1 + NODE_COUNT),
 686                     dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
 687
 688         return 0;
 689 }
 690 DM_TEST(dm_test_children, 0);
 691
 692 static int dm_test_device_reparent(struct unit_test_state *uts)
 693 {
 694         struct udevice *top[NODE_COUNT];
 695         struct udevice *child[NODE_COUNT];
 696         struct udevice *grandchild[NODE_COUNT];
 697         struct udevice *dev;
 698         int total;
 699         int ret;
 700         int i;
 701
 702         /* We don't care about the numbering for this test */
 703         uts->skip_post_probe = 1;
 704
 705         ut_assert(NODE_COUNT > 5);
 706
 707         /* First create 10 top-level children */
 708         ut_assertok(create_children(uts, uts->root, NODE_COUNT, 0, top));
 709
 710         /* Now a few have their own children */
 711         ut_assertok(create_children(uts, top[2], NODE_COUNT, 2, NULL));
 712         ut_assertok(create_children(uts, top[5], NODE_COUNT, 5, child));
 713
 714         /* And grandchildren */
 715         for (i = 0; i < NODE_COUNT; i++)
 716                 ut_assertok(create_children(uts, child[i], NODE_COUNT, 50 * i,
 717                                             i == 2 ? grandchild : NULL));
 718
 719         /* Check total number of devices */
 720         total = NODE_COUNT * (3 + NODE_COUNT);
 721         ut_asserteq(total, dm_testdrv_op_count[DM_TEST_OP_BIND]);
 722
 723         /* Probe everything */
 724         for (i = 0; i < total; i++)
 725                 ut_assertok(uclass_get_device(UCLASS_TEST, i, &dev));
 726
 727         /* Re-parent top-level children with no grandchildren. */
 728         ut_assertok(device_reparent(top[3], top[0]));
 729         /* try to get devices */
 730         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 731              dev;
 732              ret = uclass_find_next_device(&dev)) {
 733                 ut_assert(!ret);
 734                 ut_assertnonnull(dev);
 735         }
 736
 737         ut_assertok(device_reparent(top[4], top[0]));
 738         /* try to get devices */
 739         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 740              dev;
 741              ret = uclass_find_next_device(&dev)) {
 742                 ut_assert(!ret);
 743                 ut_assertnonnull(dev);
 744         }
 745
 746         /* Re-parent top-level children with grandchildren. */
 747         ut_assertok(device_reparent(top[2], top[0]));
 748         /* try to get devices */
 749         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 750              dev;
 751              ret = uclass_find_next_device(&dev)) {
 752                 ut_assert(!ret);
 753                 ut_assertnonnull(dev);
 754         }
 755
 756         ut_assertok(device_reparent(top[5], top[2]));
 757         /* try to get devices */
 758         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 759              dev;
 760              ret = uclass_find_next_device(&dev)) {
 761                 ut_assert(!ret);
 762                 ut_assertnonnull(dev);
 763         }
 764
 765         /* Re-parent grandchildren. */
 766         ut_assertok(device_reparent(grandchild[0], top[1]));
 767         /* try to get devices */
 768         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 769              dev;
 770              ret = uclass_find_next_device(&dev)) {
 771                 ut_assert(!ret);
 772                 ut_assertnonnull(dev);
 773         }
 774
 775         ut_assertok(device_reparent(grandchild[1], top[1]));
 776         /* try to get devices */
 777         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 778              dev;
 779              ret = uclass_find_next_device(&dev)) {
 780                 ut_assert(!ret);
 781                 ut_assertnonnull(dev);
 782         }
 783
 784         /* Remove re-pareneted devices. */
 785         ut_assertok(device_remove(top[3], DM_REMOVE_NORMAL));
 786         /* try to get devices */
 787         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 788              dev;
 789              ret = uclass_find_next_device(&dev)) {
 790                 ut_assert(!ret);
 791                 ut_assertnonnull(dev);
 792         }
 793
 794         ut_assertok(device_remove(top[4], DM_REMOVE_NORMAL));
 795         /* try to get devices */
 796         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 797              dev;
 798              ret = uclass_find_next_device(&dev)) {
 799                 ut_assert(!ret);
 800                 ut_assertnonnull(dev);
 801         }
 802
 803         ut_assertok(device_remove(top[5], DM_REMOVE_NORMAL));
 804         /* try to get devices */
 805         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 806              dev;
 807              ret = uclass_find_next_device(&dev)) {
 808                 ut_assert(!ret);
 809                 ut_assertnonnull(dev);
 810         }
 811
 812         ut_assertok(device_remove(top[2], DM_REMOVE_NORMAL));
 813         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 814              dev;
 815              ret = uclass_find_next_device(&dev)) {
 816                 ut_assert(!ret);
 817                 ut_assertnonnull(dev);
 818         }
 819
 820         ut_assertok(device_remove(grandchild[0], DM_REMOVE_NORMAL));
 821         /* try to get devices */
 822         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 823              dev;
 824              ret = uclass_find_next_device(&dev)) {
 825                 ut_assert(!ret);
 826                 ut_assertnonnull(dev);
 827         }
 828
 829         ut_assertok(device_remove(grandchild[1], DM_REMOVE_NORMAL));
 830         /* try to get devices */
 831         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
 832              dev;
 833              ret = uclass_find_next_device(&dev)) {
 834                 ut_assert(!ret);
 835                 ut_assertnonnull(dev);
 836         }
 837
 838         /* Try the same with unbind */
 839         ut_assertok(device_unbind(top[3]));
 840         ut_assertok(device_unbind(top[4]));
 841         ut_assertok(device_unbind(top[5]));
 842         ut_assertok(device_unbind(top[2]));
 843
 844         ut_assertok(device_unbind(grandchild[0]));
 845         ut_assertok(device_unbind(grandchild[1]));
 846
 847         return 0;
 848 }
 849 DM_TEST(dm_test_device_reparent, 0);
 850
 851 /* Test that pre-relocation devices work as expected */
 852 static int dm_test_pre_reloc(struct unit_test_state *uts)
 853 {
 854         struct udevice *dev;
 855
 856         /* The normal driver should refuse to bind before relocation */
 857         ut_asserteq(-EPERM, device_bind_by_name(uts->root, true,
 858                                                 &driver_info_manual, &dev));
 859
 860         /* But this one is marked pre-reloc */
 861         ut_assertok(device_bind_by_name(uts->root, true,
 862                                         &driver_info_pre_reloc, &dev));
 863
 864         return 0;
 865 }
 866 DM_TEST(dm_test_pre_reloc, 0);
 867
 868 /*
 869  * Test that removal of devices, either via the "normal" device_remove()
 870  * API or via the device driver selective flag works as expected
 871  */
 872 static int dm_test_remove_active_dma(struct unit_test_state *uts)
 873 {
 874         struct udevice *dev;
 875
 876         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_act_dma,
 877                                         &dev));
 878         ut_assert(dev);
 879
 880         /* Probe the device */
 881         ut_assertok(device_probe(dev));
 882
 883         /* Test if device is active right now */
 884         ut_asserteq(true, device_active(dev));
 885
 886         /* Remove the device via selective remove flag */
 887         dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
 888
 889         /* Test if device is inactive right now */
 890         ut_asserteq(false, device_active(dev));
 891
 892         /* Probe the device again */
 893         ut_assertok(device_probe(dev));
 894
 895         /* Test if device is active right now */
 896         ut_asserteq(true, device_active(dev));
 897
 898         /* Remove the device via "normal" remove API */
 899         ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
 900
 901         /* Test if device is inactive right now */
 902         ut_asserteq(false, device_active(dev));
 903
 904         /*
 905          * Test if a device without the active DMA flags is not removed upon
 906          * the active DMA remove call
 907          */
 908         ut_assertok(device_unbind(dev));
 909         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_manual,
 910                                         &dev));
 911         ut_assert(dev);
 912
 913         /* Probe the device */
 914         ut_assertok(device_probe(dev));
 915
 916         /* Test if device is active right now */
 917         ut_asserteq(true, device_active(dev));
 918
 919         /* Remove the device via selective remove flag */
 920         dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
 921
 922         /* Test if device is still active right now */
 923         ut_asserteq(true, device_active(dev));
 924
 925         return 0;
 926 }
 927 DM_TEST(dm_test_remove_active_dma, 0);
 928
 929 /* Test removal of 'vital' devices */
 930 static int dm_test_remove_vital(struct unit_test_state *uts)
 931 {
 932         struct udevice *normal, *dma, *vital, *dma_vital;
 933
 934         /* Skip the behaviour in test_post_probe() */
 935         uts->skip_post_probe = 1;
 936
 937         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_manual,
 938                                         &normal));
 939         ut_assertnonnull(normal);
 940
 941         ut_assertok(device_bind_by_name(uts->root, false, &driver_info_act_dma,
 942                                         &dma));
 943         ut_assertnonnull(dma);
 944
 945         ut_assertok(device_bind_by_name(uts->root, false,
 946                                         &driver_info_vital_clk, &vital));
 947         ut_assertnonnull(vital);
 948
 949         ut_assertok(device_bind_by_name(uts->root, false,
 950                                         &driver_info_act_dma_vital_clk,
 951                                         &dma_vital));
 952         ut_assertnonnull(dma_vital);
 953
 954         /* Probe the devices */
 955         ut_assertok(device_probe(normal));
 956         ut_assertok(device_probe(dma));
 957         ut_assertok(device_probe(vital));
 958         ut_assertok(device_probe(dma_vital));
 959
 960         /* Check that devices are active right now */
 961         ut_asserteq(true, device_active(normal));
 962         ut_asserteq(true, device_active(dma));
 963         ut_asserteq(true, device_active(vital));
 964         ut_asserteq(true, device_active(dma_vital));
 965
 966         /* Remove active devices via selective remove flag */
 967         dm_remove_devices_flags(DM_REMOVE_NON_VITAL | DM_REMOVE_ACTIVE_ALL);
 968
 969         /*
 970          * Check that this only has an effect on the dma device, since two
 971          * devices are vital and the third does not have active DMA
 972          */
 973         ut_asserteq(true, device_active(normal));
 974         ut_asserteq(false, device_active(dma));
 975         ut_asserteq(true, device_active(vital));
 976         ut_asserteq(true, device_active(dma_vital));
 977
 978         /* Remove active devices via selective remove flag */
 979         ut_assertok(device_probe(dma));
 980         dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
 981
 982         /* This should have affected both active-dma devices */
 983         ut_asserteq(true, device_active(normal));
 984         ut_asserteq(false, device_active(dma));
 985         ut_asserteq(true, device_active(vital));
 986         ut_asserteq(false, device_active(dma_vital));
 987
 988         /* Remove non-vital devices */
 989         ut_assertok(device_probe(dma));
 990         ut_assertok(device_probe(dma_vital));
 991         dm_remove_devices_flags(DM_REMOVE_NON_VITAL);
 992
 993         /* This should have affected only non-vital devices */
 994         ut_asserteq(false, device_active(normal));
 995         ut_asserteq(false, device_active(dma));
 996         ut_asserteq(true, device_active(vital));
 997         ut_asserteq(true, device_active(dma_vital));
 998
 999         /* Remove vital devices via normal remove flag */
1000         ut_assertok(device_probe(normal));
1001         ut_assertok(device_probe(dma));
1002         dm_remove_devices_flags(DM_REMOVE_NORMAL);
1003
1004         /* Check that all devices are inactive right now */
1005         ut_asserteq(false, device_active(normal));
1006         ut_asserteq(false, device_active(dma));
1007         ut_asserteq(false, device_active(vital));
1008         ut_asserteq(false, device_active(dma_vital));
1009
1010         return 0;
1011 }
1012 DM_TEST(dm_test_remove_vital, 0);
1013
1014 static int dm_test_uclass_before_ready(struct unit_test_state *uts)
1015 {
1016         struct uclass *uc;
1017
1018         ut_assertok(uclass_get(UCLASS_TEST, &uc));
1019
1020         gd->dm_root = NULL;
1021         gd->dm_root_f = NULL;
1022         memset(&gd->uclass_root, '\0', sizeof(gd->uclass_root));
1023
1024         ut_asserteq_ptr(NULL, uclass_find(UCLASS_TEST));
1025         ut_asserteq(-EDEADLK, uclass_get(UCLASS_TEST, &uc));
1026
1027         return 0;
1028 }
1029 DM_TEST(dm_test_uclass_before_ready, 0);
1030
1031 static int dm_test_uclass_devices_find(struct unit_test_state *uts)
1032 {
1033         struct udevice *dev;
1034         int ret;
1035
1036         for (ret = uclass_find_first_device(UCLASS_TEST, &dev);
1037              dev;
1038              ret = uclass_find_next_device(&dev)) {
1039                 ut_assert(!ret);
1040                 ut_assertnonnull(dev);
1041         }
1042
1043         ut_assertok(uclass_find_first_device(UCLASS_TEST_DUMMY, &dev));
1044         ut_assertnull(dev);
1045
1046         return 0;
1047 }
1048 DM_TEST(dm_test_uclass_devices_find, UT_TESTF_SCAN_PDATA);
1049
1050 static int dm_test_uclass_devices_find_by_name(struct unit_test_state *uts)
1051 {
1052         struct udevice *finddev;
1053         struct udevice *testdev;
1054         int findret, ret;
1055
1056         /*
1057          * For each test device found in fdt like: "a-test", "b-test", etc.,
1058          * use its name and try to find it by uclass_find_device_by_name().
1059          * Then, on success check if:
1060          * - current 'testdev' name is equal to the returned 'finddev' name
1061          * - current 'testdev' pointer is equal to the returned 'finddev'
1062          *
1063          * We assume that, each uclass's device name is unique, so if not, then
1064          * this will fail on checking condition: testdev == finddev, since the
1065          * uclass_find_device_by_name(), returns the first device by given name.
1066         */
1067         for (ret = uclass_find_first_device(UCLASS_TEST_FDT, &testdev);
1068              testdev;
1069              ret = uclass_find_next_device(&testdev)) {
1070                 ut_assertok(ret);
1071                 ut_assertnonnull(testdev);
1072
1073                 findret = uclass_find_device_by_name(UCLASS_TEST_FDT,
1074                                                      testdev->name,
1075                                                      &finddev);
1076
1077                 ut_assertok(findret);
1078                 ut_assert(testdev);
1079                 ut_asserteq_str(testdev->name, finddev->name);
1080                 ut_asserteq_ptr(testdev, finddev);
1081         }
1082
1083         return 0;
1084 }
1085 DM_TEST(dm_test_uclass_devices_find_by_name, UT_TESTF_SCAN_FDT);
1086
1087 static int dm_test_uclass_devices_get(struct unit_test_state *uts)
1088 {
1089         struct udevice *dev;
1090         int ret;
1091
1092         for (ret = uclass_first_device(UCLASS_TEST, &dev);
1093              dev;
1094              ret = uclass_next_device(&dev)) {
1095                 ut_assert(!ret);
1096                 ut_assert(dev);
1097                 ut_assert(device_active(dev));
1098         }
1099
1100         return 0;
1101 }
1102 DM_TEST(dm_test_uclass_devices_get, UT_TESTF_SCAN_PDATA);
1103
1104 static int dm_test_uclass_devices_get_by_name(struct unit_test_state *uts)
1105 {
1106         struct udevice *finddev;
1107         struct udevice *testdev;
1108         int ret, findret;
1109
1110         /*
1111          * For each test device found in fdt like: "a-test", "b-test", etc.,
1112          * use its name and try to get it by uclass_get_device_by_name().
1113          * On success check if:
1114          * - returned finddev' is active
1115          * - current 'testdev' name is equal to the returned 'finddev' name
1116          * - current 'testdev' pointer is equal to the returned 'finddev'
1117          *
1118          * We asserts that the 'testdev' is active on each loop entry, so we
1119          * could be sure that the 'finddev' is activated too, but for sure
1120          * we check it again.
1121          *
1122          * We assume that, each uclass's device name is unique, so if not, then
1123          * this will fail on checking condition: testdev == finddev, since the
1124          * uclass_get_device_by_name(), returns the first device by given name.
1125         */
1126         for (ret = uclass_first_device(UCLASS_TEST_FDT, &testdev);
1127              testdev;
1128              ret = uclass_next_device(&testdev)) {
1129                 ut_assertok(ret);
1130                 ut_assert(testdev);
1131                 ut_assert(device_active(testdev));
1132
1133                 findret = uclass_get_device_by_name(UCLASS_TEST_FDT,
1134                                                     testdev->name,
1135                                                     &finddev);
1136
1137                 ut_assertok(findret);
1138                 ut_assert(finddev);
1139                 ut_assert(device_active(finddev));
1140                 ut_asserteq_str(testdev->name, finddev->name);
1141                 ut_asserteq_ptr(testdev, finddev);
1142         }
1143
1144         return 0;
1145 }
1146 DM_TEST(dm_test_uclass_devices_get_by_name, UT_TESTF_SCAN_FDT);
1147
1148 static int dm_test_device_get_uclass_id(struct unit_test_state *uts)
1149 {
1150         struct udevice *dev;
1151
1152         ut_assertok(uclass_get_device(UCLASS_TEST, 0, &dev));
1153         ut_asserteq(UCLASS_TEST, device_get_uclass_id(dev));
1154
1155         return 0;
1156 }
1157 DM_TEST(dm_test_device_get_uclass_id, UT_TESTF_SCAN_PDATA);
1158
1159 static int dm_test_uclass_names(struct unit_test_state *uts)
1160 {
1161         ut_asserteq_str("test", uclass_get_name(UCLASS_TEST));
1162         ut_asserteq(UCLASS_TEST, uclass_get_by_name("test"));
1163
1164         ut_asserteq(UCLASS_SPI, uclass_get_by_name("spi"));
1165
1166         return 0;
1167 }
1168 DM_TEST(dm_test_uclass_names, UT_TESTF_SCAN_PDATA);
1169
1170 static int dm_test_inactive_child(struct unit_test_state *uts)
1171 {
1172         struct udevice *parent, *dev1, *dev2;
1173
1174         /* Skip the behaviour in test_post_probe() */
1175         uts->skip_post_probe = 1;
1176
1177         ut_assertok(uclass_first_device_err(UCLASS_TEST, &parent));
1178
1179         /*
1180          * Create a child but do not activate it. Calling the function again
1181          * should return the same child.
1182          */
1183         ut_asserteq(-ENODEV, device_find_first_inactive_child(parent,
1184                                                         UCLASS_TEST, &dev1));
1185         ut_assertok(device_bind(parent, DM_DRIVER_GET(test_drv),
1186                                 "test_child", 0, ofnode_null(), &dev1));
1187
1188         ut_assertok(device_find_first_inactive_child(parent, UCLASS_TEST,
1189                                                      &dev2));
1190         ut_asserteq_ptr(dev1, dev2);
1191
1192         ut_assertok(device_probe(dev1));
1193         ut_asserteq(-ENODEV, device_find_first_inactive_child(parent,
1194                                                         UCLASS_TEST, &dev2));
1195
1196         return 0;
1197 }
1198 DM_TEST(dm_test_inactive_child, UT_TESTF_SCAN_PDATA);
1199
1200 /* Make sure all bound devices have a sequence number */
1201 static int dm_test_all_have_seq(struct unit_test_state *uts)
1202 {
1203         struct udevice *dev;
1204         struct uclass *uc;
1205
1206         list_for_each_entry(uc, gd->uclass_root, sibling_node) {
1207                 list_for_each_entry(dev, &uc->dev_head, uclass_node) {
1208                         if (dev->seq_ == -1)
1209                                 printf("Device '%s' has no seq (%d)\n",
1210                                        dev->name, dev->seq_);
1211                         ut_assert(dev->seq_ != -1);
1212                 }
1213         }
1214
1215         return 0;
1216 }
1217 DM_TEST(dm_test_all_have_seq, UT_TESTF_SCAN_PDATA);
1218
1219 #if CONFIG_IS_ENABLED(DM_DMA)
1220 static int dm_test_dma_offset(struct unit_test_state *uts)
1221 {
1222        struct udevice *dev;
1223        ofnode node;
1224
1225        /* Make sure the bus's dma-ranges aren't taken into account here */
1226        node = ofnode_path("/mmio-bus@0");
1227        ut_assert(ofnode_valid(node));
1228        ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
1229        ut_asserteq_64(0, dev->dma_offset);
1230
1231        /* Device behind a bus with dma-ranges */
1232        node = ofnode_path("/mmio-bus@0/subnode@0");
1233        ut_assert(ofnode_valid(node));
1234        ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_FDT, node, &dev));
1235        ut_asserteq_64(-0x10000000ULL, dev->dma_offset);
1236
1237        /* This one has no dma-ranges */
1238        node = ofnode_path("/mmio-bus@1");
1239        ut_assert(ofnode_valid(node));
1240        ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
1241        node = ofnode_path("/mmio-bus@1/subnode@0");
1242        ut_assert(ofnode_valid(node));
1243        ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_FDT, node, &dev));
1244        ut_asserteq_64(0, dev->dma_offset);
1245
1246        return 0;
1247 }
1248 DM_TEST(dm_test_dma_offset, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
1249 #endif
1250
1251 /* Test dm_get_stats() */
1252 static int dm_test_get_stats(struct unit_test_state *uts)
1253 {
1254         int dev_count, uc_count;
1255
1256         dm_get_stats(&dev_count, &uc_count);
1257         ut_assert(dev_count > 50);
1258         ut_assert(uc_count > 30);
1259
1260         return 0;
1261 }
1262 DM_TEST(dm_test_get_stats, UT_TESTF_SCAN_FDT);