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.
13 #define MESA_LLVMPIPE_TILE_ORDER 6
14 #define MESA_LLVMPIPE_TILE_SIZE (1 << MESA_LLVMPIPE_TILE_ORDER)
16 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
17 DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
18 DRM_FORMAT_XRGB8888 };
20 static const uint32_t texture_source_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_YVU420,
21 DRM_FORMAT_YVU420_ANDROID };
23 static int virtio_gpu_init(struct driver *drv)
25 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
26 &LINEAR_METADATA, BO_USE_RENDER_MASK);
28 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
29 &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
31 return drv_modify_linear_combinations(drv);
34 static int virtio_gpu_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
37 width = ALIGN(width, MESA_LLVMPIPE_TILE_SIZE);
38 height = ALIGN(height, MESA_LLVMPIPE_TILE_SIZE);
40 /* HAL_PIXEL_FORMAT_YV12 requires that the buffer's height not be aligned. */
41 if (bo->format == DRM_FORMAT_YVU420_ANDROID)
44 return drv_dumb_bo_create(bo, width, height, format, use_flags);
47 static uint32_t virtio_gpu_resolve_format(uint32_t format, uint64_t use_flags)
50 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
51 /*HACK: See b/28671744 */
52 return DRM_FORMAT_XBGR8888;
53 case DRM_FORMAT_FLEX_YCbCr_420_888:
54 return DRM_FORMAT_YVU420;
60 const struct backend backend_virtio_gpu = {
62 .init = virtio_gpu_init,
63 .bo_create = virtio_gpu_bo_create,
64 .bo_destroy = drv_dumb_bo_destroy,
65 .bo_import = drv_prime_bo_import,
66 .bo_map = drv_dumb_bo_map,
67 .bo_unmap = drv_bo_munmap,
68 .resolve_format = virtio_gpu_resolve_format,