2 * Copyright 2015 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.
14 #include <mediatek_drm.h>
21 struct mediatek_private_map_data {
26 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
27 DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
28 DRM_FORMAT_XRGB8888 };
30 static const uint32_t texture_source_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_YVU420,
31 DRM_FORMAT_YVU420_ANDROID };
33 static int mediatek_init(struct driver *drv)
35 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
36 &LINEAR_METADATA, BO_USE_RENDER_MASK);
38 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
39 &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
41 return drv_modify_linear_combinations(drv);
44 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
50 struct drm_mtk_gem_create gem_create;
53 * Since the ARM L1 cache line size is 64 bytes, align to that as a
54 * performance optimization.
56 stride = drv_stride_from_format(format, width, 0);
57 stride = ALIGN(stride, 64);
58 drv_bo_from_format(bo, stride, height, format);
60 memset(&gem_create, 0, sizeof(gem_create));
61 gem_create.size = bo->total_size;
63 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
65 fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_CREATE failed (size=%llu)\n",
70 for (plane = 0; plane < bo->num_planes; plane++)
71 bo->handles[plane].u32 = gem_create.handle;
76 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
79 struct drm_mtk_gem_map_off gem_map;
80 struct mediatek_private_map_data *priv;
82 memset(&gem_map, 0, sizeof(gem_map));
83 gem_map.handle = bo->handles[0].u32;
85 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
87 fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
91 void *addr = mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
94 vma->length = bo->total_size;
96 if (bo->use_flags & BO_USE_RENDERSCRIPT) {
97 priv = calloc(1, sizeof(*priv));
98 priv->cached_addr = calloc(1, bo->total_size);
99 priv->gem_addr = addr;
100 memcpy(priv->cached_addr, priv->gem_addr, bo->total_size);
102 addr = priv->cached_addr;
108 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
111 struct mediatek_private_map_data *priv = vma->priv;
112 vma->addr = priv->gem_addr;
113 free(priv->cached_addr);
118 return munmap(vma->addr, vma->length);
121 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
123 struct mediatek_private_map_data *priv = mapping->vma->priv;
124 if (priv && (mapping->vma->map_flags & BO_MAP_WRITE))
125 memcpy(priv->gem_addr, priv->cached_addr, bo->total_size);
130 static uint32_t mediatek_resolve_format(uint32_t format, uint64_t use_flags)
133 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
134 /*HACK: See b/28671744 */
135 return DRM_FORMAT_XBGR8888;
136 case DRM_FORMAT_FLEX_YCbCr_420_888:
137 return DRM_FORMAT_YVU420;
143 const struct backend backend_mediatek = {
145 .init = mediatek_init,
146 .bo_create = mediatek_bo_create,
147 .bo_destroy = drv_gem_bo_destroy,
148 .bo_import = drv_prime_bo_import,
149 .bo_map = mediatek_bo_map,
150 .bo_unmap = mediatek_bo_unmap,
151 .bo_flush = mediatek_bo_flush,
152 .resolve_format = mediatek_resolve_format,