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.
20 static const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565,
21 DRM_FORMAT_XRGB8888 };
23 static int vc4_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 return drv_modify_linear_combinations(drv);
31 static int vc4_bo_create_for_modifier(struct bo *bo, uint32_t width, uint32_t height,
32 uint32_t format, uint64_t modifier)
37 struct drm_vc4_create_bo bo_create;
40 case DRM_FORMAT_MOD_LINEAR:
42 case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED:
43 drv_log("DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED not supported yet\n");
50 * Since the ARM L1 cache line size is 64 bytes, align to that as a
51 * performance optimization.
53 stride = drv_stride_from_format(format, width, 0);
54 stride = ALIGN(stride, 64);
55 drv_bo_from_format(bo, stride, height, format);
57 memset(&bo_create, 0, sizeof(bo_create));
58 bo_create.size = bo->meta.total_size;
60 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create);
62 drv_log("DRM_IOCTL_VC4_GEM_CREATE failed (size=%zu)\n", bo->meta.total_size);
66 for (plane = 0; plane < bo->meta.num_planes; plane++)
67 bo->handles[plane].u32 = bo_create.handle;
72 static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
75 struct combination *combo;
77 combo = drv_get_combination(bo->drv, format, use_flags);
81 return vc4_bo_create_for_modifier(bo, width, height, format, combo->metadata.modifier);
84 static int vc4_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
85 uint32_t format, const uint64_t *modifiers, uint32_t count)
87 static const uint64_t modifier_order[] = {
88 DRM_FORMAT_MOD_LINEAR,
92 modifier = drv_pick_modifier(modifiers, count, modifier_order, ARRAY_SIZE(modifier_order));
94 return vc4_bo_create_for_modifier(bo, width, height, format, modifier);
97 static void *vc4_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
100 struct drm_vc4_mmap_bo bo_map;
102 memset(&bo_map, 0, sizeof(bo_map));
103 bo_map.handle = bo->handles[0].u32;
105 ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, sizeof(bo_map));
107 drv_log("DRM_VC4_MMAP_BO failed\n");
111 vma->length = bo->meta.total_size;
112 return mmap(NULL, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
116 const struct backend backend_vc4 = {
119 .bo_create = vc4_bo_create,
120 .bo_create_with_modifiers = vc4_bo_create_with_modifiers,
121 .bo_import = drv_prime_bo_import,
122 .bo_destroy = drv_gem_bo_destroy,
123 .bo_map = vc4_bo_map,
124 .bo_unmap = drv_bo_munmap,