drv.c

   1 /*
   2  * Copyright 2016 The Chromium OS Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6 #include <assert.h>
   7 #include <errno.h>
   8 #include <fcntl.h>
   9 #include <pthread.h>
  10 #include <stdint.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <sys/mman.h>
  15 #include <sys/types.h>
  16 #include <unistd.h>
  17 #include <xf86drm.h>
  18
  19 #ifdef __ANDROID__
  20 #include <cutils/log.h>
  21 #include <libgen.h>
  22 #endif
  23
  24 #include "drv_priv.h"
  25 #include "helpers.h"
  26 #include "util.h"
  27
  28 #ifdef DRV_AMDGPU
  29 extern const struct backend backend_amdgpu;
  30 #endif
  31 #ifdef DRV_EXYNOS
  32 extern const struct backend backend_exynos;
  33 #endif
  34 #ifdef DRV_I915
  35 extern const struct backend backend_i915;
  36 #endif
  37 #ifdef DRV_MEDIATEK
  38 extern const struct backend backend_mediatek;
  39 #endif
  40 #ifdef DRV_MSM
  41 extern const struct backend backend_msm;
  42 #endif
  43 #ifdef DRV_ROCKCHIP
  44 extern const struct backend backend_rockchip;
  45 #endif
  46 #ifdef DRV_TEGRA
  47 extern const struct backend backend_tegra;
  48 #endif
  49 #ifdef DRV_VC4
  50 extern const struct backend backend_vc4;
  51 #endif
  52
  53 #ifndef DRI_GENERIC_DRV
  54 // Dumb / generic drivers
  55 extern const struct backend backend_evdi;
  56 extern const struct backend backend_marvell;
  57 extern const struct backend backend_meson;
  58 extern const struct backend backend_nouveau;
  59 extern const struct backend backend_komeda;
  60 extern const struct backend backend_radeon;
  61 extern const struct backend backend_synaptics;
  62 extern const struct backend backend_virtio_gpu;
  63 extern const struct backend backend_udl;
  64 extern const struct backend backend_vkms;
  65 #endif
  66
  67 #ifdef DRI_GENERIC_DRV
  68 extern const struct backend backend_dri_generic;
  69 #endif
  70
  71 static const struct backend *drv_get_backend(int fd)
  72 {
  73         drmVersionPtr drm_version;
  74         unsigned int i;
  75
  76         drm_version = drmGetVersion(fd);
  77
  78         if (!drm_version)
  79                 return NULL;
  80
  81         const struct backend *backend_list[] = {
  82 #ifdef DRV_AMDGPU
  83                 &backend_amdgpu,
  84 #endif
  85 #ifdef DRV_EXYNOS
  86                 &backend_exynos,
  87 #endif
  88 #ifdef DRV_I915
  89                 &backend_i915,
  90 #endif
  91 #ifdef DRV_MEDIATEK
  92                 &backend_mediatek,
  93 #endif
  94 #ifdef DRV_MSM
  95                 &backend_msm,
  96 #endif
  97 #ifdef DRV_ROCKCHIP
  98                 &backend_rockchip,
  99 #endif
 100 #ifdef DRV_VC4
 101                 &backend_vc4,
 102 #endif
 103 #ifndef DRI_GENERIC_DRV
 104                 &backend_evdi,     &backend_marvell,    &backend_meson,     &backend_nouveau,
 105                 &backend_komeda,   &backend_radeon,     &backend_synaptics, &backend_virtio_gpu,
 106                 &backend_udl,      &backend_virtio_gpu, &backend_vkms
 107 #endif
 108         };
 109
 110         for (i = 0; i < ARRAY_SIZE(backend_list); i++) {
 111                 const struct backend *b = backend_list[i];
 112                 // Exactly one of the main create functions must be defined.
 113                 assert((b->bo_create != NULL) ^ (b->bo_create_from_metadata != NULL));
 114                 // Either both or neither must be implemented.
 115                 assert((b->bo_compute_metadata != NULL) == (b->bo_create_from_metadata != NULL));
 116                 // Both can't be defined, but it's okay for neither to be (i.e. only bo_create).
 117                 assert((b->bo_create_with_modifiers == NULL) ||
 118                        (b->bo_create_from_metadata == NULL));
 119
 120                 if (!strcmp(drm_version->name, b->name)) {
 121                         drmFreeVersion(drm_version);
 122                         return b;
 123                 }
 124         }
 125
 126         drmFreeVersion(drm_version);
 127         return NULL;
 128 }
 129
 130 struct driver *drv_create(int fd, bool try_generic)
 131 {
 132         struct driver *drv;
 133         int ret;
 134
 135         drv = (struct driver *)calloc(1, sizeof(*drv));
 136
 137         if (!drv)
 138                 return NULL;
 139
 140         char *minigbm_debug;
 141         minigbm_debug = getenv("MINIGBM_DEBUG");
 142         drv->compression = (minigbm_debug == NULL) || (strcmp(minigbm_debug, "nocompression") != 0);
 143
 144         drv->fd = fd;
 145         drv->backend = drv_get_backend(fd);
 146
 147 #ifdef DRI_GENERIC_DRV
 148         if (!drv->backend && try_generic)
 149                 drv->backend = &backend_dri_generic;
 150 #endif
 151
 152         if (!drv->backend)
 153                 goto free_driver;
 154
 155         if (pthread_mutex_init(&drv->driver_lock, NULL))
 156                 goto free_driver;
 157
 158         drv->buffer_table = drmHashCreate();
 159         if (!drv->buffer_table)
 160                 goto free_lock;
 161
 162         drv->mappings = drv_array_init(sizeof(struct mapping));
 163         if (!drv->mappings)
 164                 goto free_buffer_table;
 165
 166         drv->combos = drv_array_init(sizeof(struct combination));
 167         if (!drv->combos)
 168                 goto free_mappings;
 169
 170         if (drv->backend->init) {
 171                 ret = drv->backend->init(drv);
 172                 if (ret) {
 173                         drv_array_destroy(drv->combos);
 174                         goto free_mappings;
 175                 }
 176         }
 177
 178         return drv;
 179
 180 free_mappings:
 181         drv_array_destroy(drv->mappings);
 182 free_buffer_table:
 183         drmHashDestroy(drv->buffer_table);
 184 free_lock:
 185         pthread_mutex_destroy(&drv->driver_lock);
 186 free_driver:
 187         free(drv);
 188         return NULL;
 189 }
 190
 191 void drv_destroy(struct driver *drv)
 192 {
 193         pthread_mutex_lock(&drv->driver_lock);
 194
 195         if (drv->backend->close)
 196                 drv->backend->close(drv);
 197
 198         drmHashDestroy(drv->buffer_table);
 199         drv_array_destroy(drv->mappings);
 200         drv_array_destroy(drv->combos);
 201
 202         pthread_mutex_unlock(&drv->driver_lock);
 203         pthread_mutex_destroy(&drv->driver_lock);
 204
 205         free(drv);
 206 }
 207
 208 int drv_get_fd(struct driver *drv)
 209 {
 210         return drv->fd;
 211 }
 212
 213 const char *drv_get_name(struct driver *drv)
 214 {
 215         return drv->backend->name;
 216 }
 217
 218 struct combination *drv_get_combination(struct driver *drv, uint32_t format, uint64_t use_flags)
 219 {
 220         struct combination *curr, *best;
 221
 222         if (format == DRM_FORMAT_NONE || use_flags == BO_USE_NONE)
 223                 return 0;
 224
 225         best = NULL;
 226         uint32_t i;
 227         for (i = 0; i < drv_array_size(drv->combos); i++) {
 228                 curr = drv_array_at_idx(drv->combos, i);
 229                 if ((format == curr->format) && use_flags == (curr->use_flags & use_flags))
 230                         if (!best || best->metadata.priority < curr->metadata.priority)
 231                                 best = curr;
 232         }
 233
 234         return best;
 235 }
 236
 237 struct bo *drv_bo_new(struct driver *drv, uint32_t width, uint32_t height, uint32_t format,
 238                       uint64_t use_flags, bool is_test_buffer)
 239 {
 240
 241         struct bo *bo;
 242         bo = (struct bo *)calloc(1, sizeof(*bo));
 243
 244         if (!bo)
 245                 return NULL;
 246
 247         bo->drv = drv;
 248         bo->meta.width = width;
 249         bo->meta.height = height;
 250         bo->meta.format = format;
 251         bo->meta.use_flags = use_flags;
 252         bo->meta.num_planes = drv_num_planes_from_format(format);
 253         bo->is_test_buffer = is_test_buffer;
 254
 255         if (!bo->meta.num_planes) {
 256                 free(bo);
 257                 return NULL;
 258         }
 259
 260         return bo;
 261 }
 262
 263 struct bo *drv_bo_create(struct driver *drv, uint32_t width, uint32_t height, uint32_t format,
 264                          uint64_t use_flags)
 265 {
 266         int ret;
 267         size_t plane;
 268         struct bo *bo;
 269         bool is_test_alloc;
 270
 271         is_test_alloc = use_flags & BO_USE_TEST_ALLOC;
 272         use_flags &= ~BO_USE_TEST_ALLOC;
 273
 274         bo = drv_bo_new(drv, width, height, format, use_flags, is_test_alloc);
 275
 276         if (!bo)
 277                 return NULL;
 278
 279         ret = -EINVAL;
 280         if (drv->backend->bo_compute_metadata) {
 281                 ret = drv->backend->bo_compute_metadata(bo, width, height, format, use_flags, NULL,
 282                                                         0);
 283                 if (!is_test_alloc && ret == 0)
 284                         ret = drv->backend->bo_create_from_metadata(bo);
 285         } else if (!is_test_alloc) {
 286                 ret = drv->backend->bo_create(bo, width, height, format, use_flags);
 287         }
 288
 289         if (ret) {
 290                 free(bo);
 291                 return NULL;
 292         }
 293
 294         pthread_mutex_lock(&drv->driver_lock);
 295
 296         for (plane = 0; plane < bo->meta.num_planes; plane++) {
 297                 if (plane > 0)
 298                         assert(bo->meta.offsets[plane] >= bo->meta.offsets[plane - 1]);
 299
 300                 drv_increment_reference_count(drv, bo, plane);
 301         }
 302
 303         pthread_mutex_unlock(&drv->driver_lock);
 304
 305         return bo;
 306 }
 307
 308 struct bo *drv_bo_create_with_modifiers(struct driver *drv, uint32_t width, uint32_t height,
 309                                         uint32_t format, const uint64_t *modifiers, uint32_t count)
 310 {
 311         int ret;
 312         size_t plane;
 313         struct bo *bo;
 314
 315         if (!drv->backend->bo_create_with_modifiers && !drv->backend->bo_compute_metadata) {
 316                 errno = ENOENT;
 317                 return NULL;
 318         }
 319
 320         bo = drv_bo_new(drv, width, height, format, BO_USE_NONE, false);
 321
 322         if (!bo)
 323                 return NULL;
 324
 325         ret = -EINVAL;
 326         if (drv->backend->bo_compute_metadata) {
 327                 ret = drv->backend->bo_compute_metadata(bo, width, height, format, BO_USE_NONE,
 328                                                         modifiers, count);
 329                 if (ret == 0)
 330                         ret = drv->backend->bo_create_from_metadata(bo);
 331         } else {
 332                 ret = drv->backend->bo_create_with_modifiers(bo, width, height, format, modifiers,
 333                                                              count);
 334         }
 335
 336         if (ret) {
 337                 free(bo);
 338                 return NULL;
 339         }
 340
 341         pthread_mutex_lock(&drv->driver_lock);
 342
 343         for (plane = 0; plane < bo->meta.num_planes; plane++) {
 344                 if (plane > 0)
 345                         assert(bo->meta.offsets[plane] >= bo->meta.offsets[plane - 1]);
 346
 347                 drv_increment_reference_count(drv, bo, plane);
 348         }
 349
 350         pthread_mutex_unlock(&drv->driver_lock);
 351
 352         return bo;
 353 }
 354
 355 void drv_bo_destroy(struct bo *bo)
 356 {
 357         int ret;
 358         size_t plane;
 359         uintptr_t total = 0;
 360         struct driver *drv = bo->drv;
 361
 362         if (!bo->is_test_buffer) {
 363                 pthread_mutex_lock(&drv->driver_lock);
 364
 365                 for (plane = 0; plane < bo->meta.num_planes; plane++)
 366                         drv_decrement_reference_count(drv, bo, plane);
 367
 368                 for (plane = 0; plane < bo->meta.num_planes; plane++)
 369                         total += drv_get_reference_count(drv, bo, plane);
 370
 371                 pthread_mutex_unlock(&drv->driver_lock);
 372
 373                 if (total == 0) {
 374                         ret = drv_mapping_destroy(bo);
 375                         assert(ret == 0);
 376                         bo->drv->backend->bo_destroy(bo);
 377                 }
 378         }
 379
 380         free(bo);
 381 }
 382
 383 struct bo *drv_bo_import(struct driver *drv, struct drv_import_fd_data *data)
 384 {
 385         int ret;
 386         size_t plane;
 387         struct bo *bo;
 388         off_t seek_end;
 389
 390         bo = drv_bo_new(drv, data->width, data->height, data->format, data->use_flags, false);
 391
 392         if (!bo)
 393                 return NULL;
 394
 395         ret = drv->backend->bo_import(bo, data);
 396         if (ret) {
 397                 free(bo);
 398                 return NULL;
 399         }
 400
 401         for (plane = 0; plane < bo->meta.num_planes; plane++) {
 402                 pthread_mutex_lock(&bo->drv->driver_lock);
 403                 drv_increment_reference_count(bo->drv, bo, plane);
 404                 pthread_mutex_unlock(&bo->drv->driver_lock);
 405         }
 406
 407         for (plane = 0; plane < bo->meta.num_planes; plane++) {
 408                 bo->meta.strides[plane] = data->strides[plane];
 409                 bo->meta.offsets[plane] = data->offsets[plane];
 410                 bo->meta.format_modifiers[plane] = data->format_modifiers[plane];
 411
 412                 seek_end = lseek(data->fds[plane], 0, SEEK_END);
 413                 if (seek_end == (off_t)(-1)) {
 414                         drv_log("lseek() failed with %s\n", strerror(errno));
 415                         goto destroy_bo;
 416                 }
 417
 418                 lseek(data->fds[plane], 0, SEEK_SET);
 419                 if (plane == bo->meta.num_planes - 1 || data->offsets[plane + 1] == 0)
 420                         bo->meta.sizes[plane] = seek_end - data->offsets[plane];
 421                 else
 422                         bo->meta.sizes[plane] = data->offsets[plane + 1] - data->offsets[plane];
 423
 424                 if ((int64_t)bo->meta.offsets[plane] + bo->meta.sizes[plane] > seek_end) {
 425                         drv_log("buffer size is too large.\n");
 426                         goto destroy_bo;
 427                 }
 428
 429                 bo->meta.total_size += bo->meta.sizes[plane];
 430         }
 431
 432         return bo;
 433
 434 destroy_bo:
 435         drv_bo_destroy(bo);
 436         return NULL;
 437 }
 438
 439 void *drv_bo_map(struct bo *bo, const struct rectangle *rect, uint32_t map_flags,
 440                  struct mapping **map_data, size_t plane)
 441 {
 442         uint32_t i;
 443         uint8_t *addr;
 444         struct mapping mapping = { 0 };
 445
 446         assert(rect->width >= 0);
 447         assert(rect->height >= 0);
 448         assert(rect->x + rect->width <= drv_bo_get_width(bo));
 449         assert(rect->y + rect->height <= drv_bo_get_height(bo));
 450         assert(BO_MAP_READ_WRITE & map_flags);
 451         /* No CPU access for protected buffers. */
 452         assert(!(bo->meta.use_flags & BO_USE_PROTECTED));
 453
 454         if (bo->is_test_buffer) {
 455                 return MAP_FAILED;
 456         }
 457
 458         mapping.rect = *rect;
 459         mapping.refcount = 1;
 460
 461         pthread_mutex_lock(&bo->drv->driver_lock);
 462
 463         for (i = 0; i < drv_array_size(bo->drv->mappings); i++) {
 464                 struct mapping *prior = (struct mapping *)drv_array_at_idx(bo->drv->mappings, i);
 465                 if (prior->vma->handle != bo->handles[plane].u32 ||
 466                     prior->vma->map_flags != map_flags)
 467                         continue;
 468
 469                 if (rect->x != prior->rect.x || rect->y != prior->rect.y ||
 470                     rect->width != prior->rect.width || rect->height != prior->rect.height)
 471                         continue;
 472
 473                 prior->refcount++;
 474                 *map_data = prior;
 475                 goto exact_match;
 476         }
 477
 478         for (i = 0; i < drv_array_size(bo->drv->mappings); i++) {
 479                 struct mapping *prior = (struct mapping *)drv_array_at_idx(bo->drv->mappings, i);
 480                 if (prior->vma->handle != bo->handles[plane].u32 ||
 481                     prior->vma->map_flags != map_flags)
 482                         continue;
 483
 484                 prior->vma->refcount++;
 485                 mapping.vma = prior->vma;
 486                 goto success;
 487         }
 488
 489         mapping.vma = calloc(1, sizeof(*mapping.vma));
 490         memcpy(mapping.vma->map_strides, bo->meta.strides, sizeof(mapping.vma->map_strides));
 491         addr = bo->drv->backend->bo_map(bo, mapping.vma, plane, map_flags);
 492         if (addr == MAP_FAILED) {
 493                 *map_data = NULL;
 494                 free(mapping.vma);
 495                 pthread_mutex_unlock(&bo->drv->driver_lock);
 496                 return MAP_FAILED;
 497         }
 498
 499         mapping.vma->refcount = 1;
 500         mapping.vma->addr = addr;
 501         mapping.vma->handle = bo->handles[plane].u32;
 502         mapping.vma->map_flags = map_flags;
 503
 504 success:
 505         *map_data = drv_array_append(bo->drv->mappings, &mapping);
 506 exact_match:
 507         drv_bo_invalidate(bo, *map_data);
 508         addr = (uint8_t *)((*map_data)->vma->addr);
 509         addr += drv_bo_get_plane_offset(bo, plane);
 510         pthread_mutex_unlock(&bo->drv->driver_lock);
 511         return (void *)addr;
 512 }
 513
 514 int drv_bo_unmap(struct bo *bo, struct mapping *mapping)
 515 {
 516         uint32_t i;
 517         int ret = 0;
 518
 519         pthread_mutex_lock(&bo->drv->driver_lock);
 520
 521         if (--mapping->refcount)
 522                 goto out;
 523
 524         if (!--mapping->vma->refcount) {
 525                 ret = bo->drv->backend->bo_unmap(bo, mapping->vma);
 526                 free(mapping->vma);
 527         }
 528
 529         for (i = 0; i < drv_array_size(bo->drv->mappings); i++) {
 530                 if (mapping == (struct mapping *)drv_array_at_idx(bo->drv->mappings, i)) {
 531                         drv_array_remove(bo->drv->mappings, i);
 532                         break;
 533                 }
 534         }
 535
 536 out:
 537         pthread_mutex_unlock(&bo->drv->driver_lock);
 538         return ret;
 539 }
 540
 541 int drv_bo_invalidate(struct bo *bo, struct mapping *mapping)
 542 {
 543         int ret = 0;
 544
 545         assert(mapping);
 546         assert(mapping->vma);
 547         assert(mapping->refcount > 0);
 548         assert(mapping->vma->refcount > 0);
 549
 550         if (bo->drv->backend->bo_invalidate)
 551                 ret = bo->drv->backend->bo_invalidate(bo, mapping);
 552
 553         return ret;
 554 }
 555
 556 int drv_bo_flush(struct bo *bo, struct mapping *mapping)
 557 {
 558         int ret = 0;
 559
 560         assert(mapping);
 561         assert(mapping->vma);
 562         assert(mapping->refcount > 0);
 563         assert(mapping->vma->refcount > 0);
 564
 565         if (bo->drv->backend->bo_flush)
 566                 ret = bo->drv->backend->bo_flush(bo, mapping);
 567
 568         return ret;
 569 }
 570
 571 int drv_bo_flush_or_unmap(struct bo *bo, struct mapping *mapping)
 572 {
 573         int ret = 0;
 574
 575         assert(mapping);
 576         assert(mapping->vma);
 577         assert(mapping->refcount > 0);
 578         assert(mapping->vma->refcount > 0);
 579         assert(!(bo->meta.use_flags & BO_USE_PROTECTED));
 580
 581         if (bo->drv->backend->bo_flush)
 582                 ret = bo->drv->backend->bo_flush(bo, mapping);
 583         else
 584                 ret = drv_bo_unmap(bo, mapping);
 585
 586         return ret;
 587 }
 588
 589 uint32_t drv_bo_get_width(struct bo *bo)
 590 {
 591         return bo->meta.width;
 592 }
 593
 594 uint32_t drv_bo_get_height(struct bo *bo)
 595 {
 596         return bo->meta.height;
 597 }
 598
 599 size_t drv_bo_get_num_planes(struct bo *bo)
 600 {
 601         return bo->meta.num_planes;
 602 }
 603
 604 union bo_handle drv_bo_get_plane_handle(struct bo *bo, size_t plane)
 605 {
 606         return bo->handles[plane];
 607 }
 608
 609 #ifndef DRM_RDWR
 610 #define DRM_RDWR O_RDWR
 611 #endif
 612
 613 int drv_bo_get_plane_fd(struct bo *bo, size_t plane)
 614 {
 615
 616         int ret, fd;
 617         assert(plane < bo->meta.num_planes);
 618
 619         if (bo->is_test_buffer) {
 620                 return -EINVAL;
 621         }
 622
 623         if (bo->drv->backend->bo_get_plane_fd) {
 624                 fd = bo->drv->backend->bo_get_plane_fd(bo, plane);
 625
 626                 if (fd >= 0)
 627                         return fd;
 628         }
 629
 630         ret = drmPrimeHandleToFD(bo->drv->fd, bo->handles[plane].u32, DRM_CLOEXEC | DRM_RDWR, &fd);
 631
 632         // Older DRM implementations blocked DRM_RDWR, but gave a read/write mapping anyways
 633         if (ret)
 634                 ret = drmPrimeHandleToFD(bo->drv->fd, bo->handles[plane].u32, DRM_CLOEXEC, &fd);
 635
 636         return (ret) ? ret : fd;
 637 }
 638
 639 uint32_t drv_bo_get_plane_offset(struct bo *bo, size_t plane)
 640 {
 641         assert(plane < bo->meta.num_planes);
 642         return bo->meta.offsets[plane];
 643 }
 644
 645 uint32_t drv_bo_get_plane_size(struct bo *bo, size_t plane)
 646 {
 647         assert(plane < bo->meta.num_planes);
 648         return bo->meta.sizes[plane];
 649 }
 650
 651 uint32_t drv_bo_get_plane_stride(struct bo *bo, size_t plane)
 652 {
 653         assert(plane < bo->meta.num_planes);
 654         return bo->meta.strides[plane];
 655 }
 656
 657 uint64_t drv_bo_get_plane_format_modifier(struct bo *bo, size_t plane)
 658 {
 659         assert(plane < bo->meta.num_planes);
 660         return bo->meta.format_modifiers[plane];
 661 }
 662
 663 uint32_t drv_bo_get_format(struct bo *bo)
 664 {
 665         return bo->meta.format;
 666 }
 667
 668 size_t drv_bo_get_total_size(struct bo *bo)
 669 {
 670         return bo->meta.total_size;
 671 }
 672
 673 uint32_t drv_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
 674 {
 675         if (drv->backend->resolve_format)
 676                 return drv->backend->resolve_format(drv, format, use_flags);
 677
 678         return format;
 679 }
 680
 681 uint32_t drv_num_buffers_per_bo(struct bo *bo)
 682 {
 683         uint32_t count = 0;
 684         size_t plane, p;
 685
 686         if (bo->is_test_buffer) {
 687                 return 0;
 688         }
 689
 690         for (plane = 0; plane < bo->meta.num_planes; plane++) {
 691                 for (p = 0; p < plane; p++)
 692                         if (bo->handles[p].u32 == bo->handles[plane].u32)
 693                                 break;
 694                 if (p == plane)
 695                         count++;
 696         }
 697
 698         return count;
 699 }
 700
 701 void drv_log_prefix(const char *prefix, const char *file, int line, const char *format, ...)
 702 {
 703         char buf[50];
 704         snprintf(buf, sizeof(buf), "[%s:%s(%d)]", prefix, basename(file), line);
 705
 706         va_list args;
 707         va_start(args, format);
 708 #ifdef __ANDROID__
 709         __android_log_vprint(ANDROID_LOG_ERROR, buf, format, args);
 710 #else
 711         fprintf(stderr, "%s ", buf);
 712         vfprintf(stderr, format, args);
 713 #endif
 714         va_end(args);
 715 }
 716
 717 int drv_resource_info(struct bo *bo, uint32_t strides[DRV_MAX_PLANES],
 718                       uint32_t offsets[DRV_MAX_PLANES])
 719 {
 720         for (uint32_t plane = 0; plane < bo->meta.num_planes; plane++) {
 721                 strides[plane] = bo->meta.strides[plane];
 722                 offsets[plane] = bo->meta.offsets[plane];
 723         }
 724
 725         if (bo->drv->backend->resource_info)
 726                 return bo->drv->backend->resource_info(bo, strides, offsets);
 727
 728         return 0;
 729 }