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)
36 ret = drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
37 &LINEAR_METADATA, BO_USE_RENDER_MASK);
41 ret = drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
42 &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
46 return drv_modify_linear_combinations(drv);
49 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
55 struct drm_mtk_gem_create gem_create;
58 * Since the ARM L1 cache line size is 64 bytes, align to that as a
59 * performance optimization.
61 stride = drv_stride_from_format(format, width, 0);
62 stride = ALIGN(stride, 64);
63 drv_bo_from_format(bo, stride, height, format);
65 memset(&gem_create, 0, sizeof(gem_create));
66 gem_create.size = bo->total_size;
68 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
70 fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_CREATE failed (size=%llu)\n",
75 for (plane = 0; plane < bo->num_planes; plane++)
76 bo->handles[plane].u32 = gem_create.handle;
81 static void *mediatek_bo_map(struct bo *bo, struct map_info *data, size_t plane, int prot)
84 struct drm_mtk_gem_map_off gem_map;
85 struct mediatek_private_map_data *priv;
87 memset(&gem_map, 0, sizeof(gem_map));
88 gem_map.handle = bo->handles[0].u32;
90 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
92 fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
96 void *addr = mmap(0, bo->total_size, prot, MAP_SHARED, bo->drv->fd, gem_map.offset);
98 data->length = bo->total_size;
100 if (bo->flags & BO_USE_RENDERSCRIPT) {
101 priv = calloc(1, sizeof(*priv));
102 priv->cached_addr = calloc(1, bo->total_size);
103 priv->gem_addr = addr;
104 memcpy(priv->cached_addr, priv->gem_addr, bo->total_size);
106 addr = priv->cached_addr;
112 static int mediatek_bo_unmap(struct bo *bo, struct map_info *data)
115 struct mediatek_private_map_data *priv = data->priv;
116 memcpy(priv->gem_addr, priv->cached_addr, bo->total_size);
117 data->addr = priv->gem_addr;
118 free(priv->cached_addr);
123 return munmap(data->addr, data->length);
126 static uint32_t mediatek_resolve_format(uint32_t format, uint64_t usage)
129 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
130 /*HACK: See b/28671744 */
131 return DRM_FORMAT_XBGR8888;
132 case DRM_FORMAT_FLEX_YCbCr_420_888:
133 return DRM_FORMAT_YVU420;
139 struct backend backend_mediatek = {
141 .init = mediatek_init,
142 .bo_create = mediatek_bo_create,
143 .bo_destroy = drv_gem_bo_destroy,
144 .bo_import = drv_prime_bo_import,
145 .bo_map = mediatek_bo_map,
146 .bo_unmap = mediatek_bo_unmap,
147 .resolve_format = mediatek_resolve_format,