2 * Copyright 2014 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.
11 #include <rockchip_drm.h>
21 struct rockchip_private_map_data {
26 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
27 DRM_FORMAT_BGR888, DRM_FORMAT_RGB565,
28 DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888 };
30 static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV12, DRM_FORMAT_YVU420,
31 DRM_FORMAT_YVU420_ANDROID };
33 static int afbc_bo_from_format(struct bo *bo, uint32_t width, uint32_t height, uint32_t format)
35 /* We've restricted ourselves to four bytes per pixel. */
36 const uint32_t pixel_size = 4;
38 const uint32_t clump_width = 4;
39 const uint32_t clump_height = 4;
43 const uint32_t block_width = 4 * clump_width;
44 const uint32_t block_height = 4 * clump_height;
46 const uint32_t block_width = 8 * clump_width;
47 const uint32_t block_height = 2 * clump_height;
50 const uint32_t header_block_size = 16;
51 const uint32_t body_block_size = block_width * block_height * pixel_size;
52 const uint32_t width_in_blocks = DIV_ROUND_UP(width, block_width);
53 const uint32_t height_in_blocks = DIV_ROUND_UP(height, block_height);
54 const uint32_t total_blocks = width_in_blocks * height_in_blocks;
56 const uint32_t header_plane_size = total_blocks * header_block_size;
57 const uint32_t body_plane_size = total_blocks * body_block_size;
59 /* GPU requires 64 bytes, but EGL import code expects 1024 byte
60 * alignement for the body plane. */
61 const uint32_t body_plane_alignment = 1024;
63 const uint32_t body_plane_offset = ALIGN(header_plane_size, body_plane_alignment);
64 const uint32_t total_size = body_plane_offset + body_plane_size;
66 bo->strides[0] = width_in_blocks * block_width * pixel_size;
67 bo->sizes[0] = total_size;
70 bo->total_size = total_size;
72 bo->format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;
77 static int rockchip_add_kms_item(struct driver *drv, const struct kms_item *item)
81 struct combination *combo;
82 struct format_metadata metadata;
84 for (i = 0; i < drv_array_size(drv->combos); i++) {
85 combo = (struct combination *)drv_array_at_idx(drv->combos, i);
86 if (combo->format == item->format) {
87 if (item->modifier == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC) {
88 use_flags = BO_USE_RENDERING | BO_USE_SCANOUT | BO_USE_TEXTURE;
89 metadata.modifier = item->modifier;
91 metadata.priority = 2;
93 for (j = 0; j < ARRAY_SIZE(texture_source_formats); j++) {
94 if (item->format == texture_source_formats[j])
95 use_flags &= ~BO_USE_RENDERING;
98 drv_add_combinations(drv, &item->format, 1, &metadata, use_flags);
100 combo->use_flags |= item->use_flags;
108 static int rockchip_init(struct driver *drv)
112 struct drv_array *kms_items;
113 struct format_metadata metadata;
116 metadata.priority = 1;
117 metadata.modifier = DRM_FORMAT_MOD_LINEAR;
119 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
120 &metadata, BO_USE_RENDER_MASK);
122 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
123 &metadata, BO_USE_TEXTURE_MASK);
126 * Chrome uses DMA-buf mmap to write to YV12 buffers, which are then accessed by the
127 * Video Encoder Accelerator (VEA). It could also support NV12 potentially in the future.
129 drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_ENCODER);
130 drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata, BO_USE_HW_VIDEO_ENCODER);
132 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
133 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
135 /* Camera ISP supports only NV12 output. */
136 drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
137 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_HW_VIDEO_DECODER);
139 * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
142 drv_add_combination(drv, DRM_FORMAT_R8, &metadata,
143 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SW_MASK |
146 kms_items = drv_query_kms(drv);
150 for (i = 0; i < drv_array_size(kms_items); i++) {
151 ret = rockchip_add_kms_item(drv, (struct kms_item *)drv_array_at_idx(kms_items, i));
153 drv_array_destroy(kms_items);
158 drv_array_destroy(kms_items);
162 static int rockchip_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
163 uint32_t format, const uint64_t *modifiers,
168 struct drm_rockchip_gem_create gem_create;
170 if (format == DRM_FORMAT_NV12) {
171 uint32_t w_mbs = DIV_ROUND_UP(width, 16);
172 uint32_t h_mbs = DIV_ROUND_UP(height, 16);
174 uint32_t aligned_width = w_mbs * 16;
176 // TODO(b/140152839): Align height by 16 once camera HAL
177 // supports multi planar format.
178 drv_bo_from_format(bo, aligned_width, height, format);
180 * drv_bo_from_format updates total_size. Add an extra data space for rockchip video
181 * driver to store motion vectors.
183 bo->total_size += w_mbs * h_mbs * 128;
184 } else if (width <= 2560 &&
185 drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)) {
186 /* If the caller has decided they can use AFBC, always
188 afbc_bo_from_format(bo, width, height, format);
190 if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
192 drv_log("no usable modifier found\n");
198 * Since the ARM L1 cache line size is 64 bytes, align to that
199 * as a performance optimization. For YV12, the Mali cmem allocator
200 * requires that chroma planes are aligned to 64-bytes, so align the
201 * luma plane to 128 bytes.
203 stride = drv_stride_from_format(format, width, 0);
204 if (format == DRM_FORMAT_YVU420 || format == DRM_FORMAT_YVU420_ANDROID)
205 stride = ALIGN(stride, 128);
207 stride = ALIGN(stride, 64);
209 drv_bo_from_format(bo, stride, height, format);
212 memset(&gem_create, 0, sizeof(gem_create));
213 gem_create.size = bo->total_size;
215 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE, &gem_create);
218 drv_log("DRM_IOCTL_ROCKCHIP_GEM_CREATE failed (size=%" PRIu64 ")\n",
223 for (plane = 0; plane < bo->num_planes; plane++)
224 bo->handles[plane].u32 = gem_create.handle;
229 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
232 uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
233 return rockchip_bo_create_with_modifiers(bo, width, height, format, modifiers,
234 ARRAY_SIZE(modifiers));
237 static void *rockchip_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
240 struct drm_rockchip_gem_map_off gem_map;
241 struct rockchip_private_map_data *priv;
243 /* We can only map buffers created with SW access flags, which should
244 * have no modifiers (ie, not AFBC). */
245 if (bo->format_modifiers[0] == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)
248 memset(&gem_map, 0, sizeof(gem_map));
249 gem_map.handle = bo->handles[0].u32;
251 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET, &gem_map);
253 drv_log("DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
257 void *addr = mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
260 vma->length = bo->total_size;
262 if (bo->use_flags & BO_USE_RENDERSCRIPT) {
263 priv = calloc(1, sizeof(*priv));
264 priv->cached_addr = calloc(1, bo->total_size);
265 priv->gem_addr = addr;
267 addr = priv->cached_addr;
273 static int rockchip_bo_unmap(struct bo *bo, struct vma *vma)
276 struct rockchip_private_map_data *priv = vma->priv;
277 vma->addr = priv->gem_addr;
278 free(priv->cached_addr);
283 return munmap(vma->addr, vma->length);
286 static int rockchip_bo_invalidate(struct bo *bo, struct mapping *mapping)
288 if (mapping->vma->priv) {
289 struct rockchip_private_map_data *priv = mapping->vma->priv;
290 memcpy(priv->cached_addr, priv->gem_addr, bo->total_size);
296 static int rockchip_bo_flush(struct bo *bo, struct mapping *mapping)
298 struct rockchip_private_map_data *priv = mapping->vma->priv;
299 if (priv && (mapping->vma->map_flags & BO_MAP_WRITE))
300 memcpy(priv->gem_addr, priv->cached_addr, bo->total_size);
305 static uint32_t rockchip_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
308 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
309 /* Camera subsystem requires NV12. */
310 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE))
311 return DRM_FORMAT_NV12;
312 /*HACK: See b/28671744 */
313 return DRM_FORMAT_XBGR8888;
314 case DRM_FORMAT_FLEX_YCbCr_420_888:
315 return DRM_FORMAT_NV12;
321 const struct backend backend_rockchip = {
323 .init = rockchip_init,
324 .bo_create = rockchip_bo_create,
325 .bo_create_with_modifiers = rockchip_bo_create_with_modifiers,
326 .bo_destroy = drv_gem_bo_destroy,
327 .bo_import = drv_prime_bo_import,
328 .bo_map = rockchip_bo_map,
329 .bo_unmap = rockchip_bo_unmap,
330 .bo_invalidate = rockchip_bo_invalidate,
331 .bo_flush = rockchip_bo_flush,
332 .resolve_format = rockchip_resolve_format,