2 * Copyright 2017 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.
19 static struct supported_combination combos[3] = {
20 {DRM_FORMAT_ARGB8888, DRM_FORMAT_MOD_NONE,
21 BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN |
22 BO_USE_SW_WRITE_OFTEN | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
23 {DRM_FORMAT_RGB565, DRM_FORMAT_MOD_NONE,
24 BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN |
25 BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
26 {DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
27 BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN |
28 BO_USE_SW_WRITE_OFTEN | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
31 static int vc4_init(struct driver *drv)
33 drv_insert_combinations(drv, combos, ARRAY_SIZE(combos));
34 return drv_add_kms_flags(drv);
37 static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height,
38 uint32_t format, uint32_t flags)
42 struct drm_vc4_create_bo bo_create;
44 drv_bo_from_format(bo, width, height, format);
46 memset(&bo_create, 0, sizeof(bo_create));
47 bo_create.size = bo->total_size;
49 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create);
51 fprintf(stderr, "drv: DRM_IOCTL_VC4_GEM_CREATE failed "
52 "(size=%zu)\n", bo->total_size);
56 for (plane = 0; plane < bo->num_planes; plane++)
57 bo->handles[plane].u32 = bo_create.handle;
62 static void *vc4_bo_map(struct bo *bo, struct map_info *data, size_t plane)
65 struct drm_vc4_mmap_bo bo_map;
67 memset(&bo_map, 0, sizeof(bo_map));
68 bo_map.handle = bo->handles[0].u32;
70 ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map,
73 fprintf(stderr, "drv: DRM_VC4_MMAP_BO failed\n");
77 data->length = bo->total_size;
79 return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED,
80 bo->drv->fd, bo_map.offset);
83 struct backend backend_vc4 =
87 .bo_create = vc4_bo_create,
88 .bo_import = drv_prime_bo_import,
89 .bo_destroy = drv_gem_bo_destroy,