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.
19 #include <mediatek_drm.h>
26 #define TILE_TYPE_LINEAR 0
28 struct mediatek_private_map_data {
34 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
35 DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
36 DRM_FORMAT_XRGB8888 };
39 static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV21, DRM_FORMAT_NV12,
40 DRM_FORMAT_YUYV, DRM_FORMAT_YVU420,
41 DRM_FORMAT_YVU420_ANDROID };
43 static const uint32_t texture_source_formats[] = { DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID,
47 static int mediatek_init(struct driver *drv)
49 struct format_metadata metadata;
51 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
52 &LINEAR_METADATA, BO_USE_RENDER_MASK | BO_USE_SCANOUT);
54 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
55 &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
57 drv_add_combination(drv, DRM_FORMAT_R8, &LINEAR_METADATA,
58 BO_USE_SW_MASK | BO_USE_LINEAR | BO_USE_PROTECTED);
60 * Chrome uses DMA-buf mmap to write to YV12 buffers, which are then accessed by the
61 * Video Encoder Accelerator (VEA). It could also support NV12 potentially in the future.
63 drv_modify_combination(drv, DRM_FORMAT_YVU420, &LINEAR_METADATA, BO_USE_HW_VIDEO_ENCODER);
64 drv_modify_combination(drv, DRM_FORMAT_NV12, &LINEAR_METADATA, BO_USE_HW_VIDEO_ENCODER);
66 /* Android CTS tests require this. */
67 drv_add_combination(drv, DRM_FORMAT_BGR888, &LINEAR_METADATA, BO_USE_SW_MASK);
69 /* Support BO_USE_HW_VIDEO_DECODER for protected content minigbm allocations. */
70 metadata.tiling = TILE_TYPE_LINEAR;
71 metadata.priority = 1;
72 metadata.modifier = DRM_FORMAT_MOD_LINEAR;
73 drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_DECODER);
74 drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &metadata, BO_USE_HW_VIDEO_DECODER);
75 drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata, BO_USE_HW_VIDEO_DECODER);
78 /* Only for MT8183 Camera subsystem */
79 drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
80 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
81 drv_modify_combination(drv, DRM_FORMAT_NV21, &metadata,
82 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
83 drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
84 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
85 drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata,
86 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
87 drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
88 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
89 /* Private formats for private reprocessing in camera */
90 drv_add_combination(drv, DRM_FORMAT_MTISP_SXYZW10, &metadata,
91 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SW_MASK);
94 return drv_modify_linear_combinations(drv);
97 static int mediatek_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
98 uint32_t format, const uint64_t *modifiers,
104 struct drm_mtk_gem_create gem_create;
106 if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
108 drv_log("no usable modifier found\n");
113 * Since the ARM L1 cache line size is 64 bytes, align to that as a
114 * performance optimization.
116 stride = drv_stride_from_format(format, width, 0);
117 stride = ALIGN(stride, 64);
119 if (bo->meta.use_flags & BO_USE_HW_VIDEO_ENCODER) {
120 uint32_t aligned_height = ALIGN(height, 32);
121 uint32_t padding[DRV_MAX_PLANES] = { 0 };
123 for (plane = 0; plane < bo->meta.num_planes; ++plane) {
124 uint32_t plane_stride = drv_stride_from_format(format, stride, plane);
125 padding[plane] = plane_stride *
126 (32 / drv_vertical_subsampling_from_format(format, plane));
129 drv_bo_from_format_and_padding(bo, stride, aligned_height, format, padding);
133 * JPEG Encoder Accelerator requires 16x16 alignment. We want the buffer
134 * from camera can be put in JEA directly so align the height to 16
137 if (format == DRM_FORMAT_NV12)
138 height = ALIGN(height, 16);
140 drv_bo_from_format(bo, stride, height, format);
143 memset(&gem_create, 0, sizeof(gem_create));
144 gem_create.size = bo->meta.total_size;
146 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
148 drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%" PRIu64 ")\n", gem_create.size);
152 for (plane = 0; plane < bo->meta.num_planes; plane++)
153 bo->handles[plane].u32 = gem_create.handle;
158 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
161 uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
162 return mediatek_bo_create_with_modifiers(bo, width, height, format, modifiers,
163 ARRAY_SIZE(modifiers));
166 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
169 struct drm_mtk_gem_map_off gem_map;
170 struct mediatek_private_map_data *priv;
172 memset(&gem_map, 0, sizeof(gem_map));
173 gem_map.handle = bo->handles[0].u32;
175 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
177 drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
181 prime_fd = drv_bo_get_plane_fd(bo, 0);
183 drv_log("Failed to get a prime fd\n");
187 void *addr = mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
190 vma->length = bo->meta.total_size;
192 priv = calloc(1, sizeof(*priv));
193 priv->prime_fd = prime_fd;
196 if (bo->meta.use_flags & BO_USE_RENDERSCRIPT) {
197 priv->cached_addr = calloc(1, bo->meta.total_size);
198 priv->gem_addr = addr;
199 addr = priv->cached_addr;
205 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
208 struct mediatek_private_map_data *priv = vma->priv;
210 if (priv->cached_addr) {
211 vma->addr = priv->gem_addr;
212 free(priv->cached_addr);
215 close(priv->prime_fd);
220 return munmap(vma->addr, vma->length);
223 static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping)
225 struct mediatek_private_map_data *priv = mapping->vma->priv;
228 struct pollfd fds = {
229 .fd = priv->prime_fd,
232 if (mapping->vma->map_flags & BO_MAP_WRITE)
233 fds.events |= POLLOUT;
235 if (mapping->vma->map_flags & BO_MAP_READ)
236 fds.events |= POLLIN;
239 if (fds.revents != fds.events)
240 drv_log("poll prime_fd failed\n");
242 if (priv->cached_addr)
243 memcpy(priv->cached_addr, priv->gem_addr, bo->meta.total_size);
249 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
251 struct mediatek_private_map_data *priv = mapping->vma->priv;
252 if (priv && priv->cached_addr && (mapping->vma->map_flags & BO_MAP_WRITE))
253 memcpy(priv->gem_addr, priv->cached_addr, bo->meta.total_size);
258 static uint32_t mediatek_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
261 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
263 /* Only MT8183 Camera subsystem offers private reprocessing
264 * capability. CAMERA_READ indicates the buffer is intended for
265 * reprocessing and hence given the private format for MTK. */
266 if (use_flags & BO_USE_CAMERA_READ)
267 return DRM_FORMAT_MTISP_SXYZW10;
268 /* For non-reprocessing uses, only MT8183 Camera subsystem
270 else if (use_flags & BO_USE_CAMERA_WRITE)
271 return DRM_FORMAT_NV12;
273 /*HACK: See b/28671744 */
274 return DRM_FORMAT_XBGR8888;
275 case DRM_FORMAT_FLEX_YCbCr_420_888:
277 /* MT8183 camera and decoder subsystems require NV12. */
278 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE |
279 BO_USE_HW_VIDEO_DECODER | BO_USE_HW_VIDEO_ENCODER)) {
280 return DRM_FORMAT_NV12;
283 return DRM_FORMAT_YVU420;
289 const struct backend backend_mediatek = {
291 .init = mediatek_init,
292 .bo_create = mediatek_bo_create,
293 .bo_create_with_modifiers = mediatek_bo_create_with_modifiers,
294 .bo_destroy = drv_gem_bo_destroy,
295 .bo_import = drv_prime_bo_import,
296 .bo_map = mediatek_bo_map,
297 .bo_unmap = mediatek_bo_unmap,
298 .bo_invalidate = mediatek_bo_invalidate,
299 .bo_flush = mediatek_bo_flush,
300 .resolve_format = mediatek_resolve_format,