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 const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565,
20 DRM_FORMAT_XRGB8888 };
22 static int vc4_init(struct driver *drv)
25 ret = drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
26 &LINEAR_METADATA, BO_USE_RENDER_MASK);
30 return drv_modify_linear_combinations(drv);
33 static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
39 struct drm_vc4_create_bo bo_create;
42 * Since the ARM L1 cache line size is 64 bytes, align to that as a
43 * performance optimization.
45 stride = drv_stride_from_format(format, width, 0);
46 stride = ALIGN(stride, 64);
47 drv_bo_from_format(bo, stride, height, format);
49 memset(&bo_create, 0, sizeof(bo_create));
50 bo_create.size = bo->total_size;
52 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create);
54 fprintf(stderr, "drv: DRM_IOCTL_VC4_GEM_CREATE failed (size=%zu)\n",
59 for (plane = 0; plane < bo->num_planes; plane++)
60 bo->handles[plane].u32 = bo_create.handle;
65 static void *vc4_bo_map(struct bo *bo, struct map_info *data, size_t plane)
68 struct drm_vc4_mmap_bo bo_map;
70 memset(&bo_map, 0, sizeof(bo_map));
71 bo_map.handle = bo->handles[0].u32;
73 ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, sizeof(bo_map));
75 fprintf(stderr, "drv: DRM_VC4_MMAP_BO failed\n");
79 data->length = bo->total_size;
81 return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->drv->fd,
85 struct backend backend_vc4 = {
88 .bo_create = vc4_bo_create,
89 .bo_import = drv_prime_bo_import,
90 .bo_destroy = drv_gem_bo_destroy,