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)
24 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
25 &LINEAR_METADATA, BO_USE_RENDER_MASK);
27 return drv_modify_linear_combinations(drv);
30 static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
36 struct drm_vc4_create_bo bo_create;
39 * Since the ARM L1 cache line size is 64 bytes, align to that as a
40 * performance optimization.
42 stride = drv_stride_from_format(format, width, 0);
43 stride = ALIGN(stride, 64);
44 drv_bo_from_format(bo, stride, 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 drv_log("DRM_IOCTL_VC4_GEM_CREATE failed (size=%zu)\n", bo->total_size);
55 for (plane = 0; plane < bo->num_planes; plane++)
56 bo->handles[plane].u32 = bo_create.handle;
61 static void *vc4_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
64 struct drm_vc4_mmap_bo bo_map;
66 memset(&bo_map, 0, sizeof(bo_map));
67 bo_map.handle = bo->handles[0].u32;
69 ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, sizeof(bo_map));
71 drv_log("DRM_VC4_MMAP_BO failed\n");
75 vma->length = bo->total_size;
76 return mmap(NULL, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
80 const struct backend backend_vc4 = {
83 .bo_create = vc4_bo_create,
84 .bo_import = drv_prime_bo_import,
85 .bo_destroy = drv_gem_bo_destroy,
87 .bo_unmap = drv_bo_munmap,