2 * Copyright 2016 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.
8 #include <amdgpu_drm.h>
22 #define DRI_PATH STRINGIZE(DRI_DRIVER_DIR/radeonsi_dri.so)
25 #define TILE_TYPE_LINEAR 0
26 /* DRI backend decides tiling in this case. */
27 #define TILE_TYPE_DRI 1
30 struct dri_driver dri;
34 const static uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
35 DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
36 DRM_FORMAT_XRGB8888 };
38 const static uint32_t texture_source_formats[] = { DRM_FORMAT_GR88, DRM_FORMAT_R8,
39 DRM_FORMAT_NV21, DRM_FORMAT_NV12,
40 DRM_FORMAT_YVU420_ANDROID, DRM_FORMAT_YVU420 };
42 static int amdgpu_init(struct driver *drv)
44 struct amdgpu_priv *priv;
45 drmVersionPtr drm_version;
46 struct format_metadata metadata;
47 uint64_t use_flags = BO_USE_RENDER_MASK;
49 priv = calloc(1, sizeof(struct amdgpu_priv));
53 drm_version = drmGetVersion(drv_get_fd(drv));
59 priv->drm_version = drm_version->version_minor;
60 drmFreeVersion(drm_version);
64 if (dri_init(drv, DRI_PATH, "radeonsi")) {
70 metadata.tiling = TILE_TYPE_LINEAR;
71 metadata.priority = 1;
72 metadata.modifier = DRM_FORMAT_MOD_LINEAR;
74 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
75 &metadata, use_flags);
77 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
78 &metadata, BO_USE_TEXTURE_MASK);
81 * Chrome uses DMA-buf mmap to write to YV12 buffers, which are then accessed by the
82 * Video Encoder Accelerator (VEA). It could also support NV12 potentially in the future.
84 drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_ENCODER);
85 drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata, BO_USE_HW_VIDEO_ENCODER);
87 /* Android CTS tests require this. */
88 drv_add_combination(drv, DRM_FORMAT_BGR888, &metadata, BO_USE_SW_MASK);
90 /* Linear formats supported by display. */
91 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
92 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
93 drv_modify_combination(drv, DRM_FORMAT_ABGR8888, &metadata, BO_USE_SCANOUT);
94 drv_modify_combination(drv, DRM_FORMAT_XBGR8888, &metadata, BO_USE_SCANOUT);
96 /* YUV formats for camera and display. */
97 drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
98 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SCANOUT |
99 BO_USE_HW_VIDEO_DECODER);
101 drv_modify_combination(drv, DRM_FORMAT_NV21, &metadata, BO_USE_SCANOUT);
104 * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
107 drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
108 BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
111 * The following formats will be allocated by the DRI backend and may be potentially tiled.
112 * Since format modifier support hasn't been implemented fully yet, it's not
113 * possible to enumerate the different types of buffers (like i915 can).
115 use_flags &= ~BO_USE_RENDERSCRIPT;
116 use_flags &= ~BO_USE_SW_WRITE_OFTEN;
117 use_flags &= ~BO_USE_SW_READ_OFTEN;
118 use_flags &= ~BO_USE_LINEAR;
120 metadata.tiling = TILE_TYPE_DRI;
121 metadata.priority = 2;
123 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
124 &metadata, use_flags);
126 /* Potentially tiled formats supported by display. */
127 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
128 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
129 drv_modify_combination(drv, DRM_FORMAT_ABGR8888, &metadata, BO_USE_SCANOUT);
130 drv_modify_combination(drv, DRM_FORMAT_XBGR8888, &metadata, BO_USE_SCANOUT);
134 static void amdgpu_close(struct driver *drv)
141 static int amdgpu_create_bo_linear(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
145 uint32_t plane, stride;
146 union drm_amdgpu_gem_create gem_create;
148 stride = drv_stride_from_format(format, width, 0);
149 stride = ALIGN(stride, 256);
151 drv_bo_from_format(bo, stride, height, format);
153 memset(&gem_create, 0, sizeof(gem_create));
154 gem_create.in.bo_size = bo->meta.total_size;
155 gem_create.in.alignment = 256;
156 gem_create.in.domain_flags = 0;
158 if (use_flags & (BO_USE_LINEAR | BO_USE_SW_MASK))
159 gem_create.in.domain_flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
161 gem_create.in.domains = AMDGPU_GEM_DOMAIN_GTT;
162 gem_create.in.domain_flags |= AMDGPU_GEM_CREATE_CPU_GTT_USWC;
164 /* Allocate the buffer with the preferred heap. */
165 ret = drmCommandWriteRead(drv_get_fd(bo->drv), DRM_AMDGPU_GEM_CREATE, &gem_create,
170 for (plane = 0; plane < bo->meta.num_planes; plane++)
171 bo->handles[plane].u32 = gem_create.out.handle;
173 bo->meta.format_modifiers[0] = DRM_FORMAT_MOD_LINEAR;
178 static int amdgpu_create_bo(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
181 struct combination *combo;
183 combo = drv_get_combination(bo->drv, format, use_flags);
187 if (combo->metadata.tiling == TILE_TYPE_DRI) {
188 bool needs_alignment = false;
191 * Currently, the gralloc API doesn't differentiate between allocation time and map
192 * time strides. A workaround for amdgpu DRI buffers is to always to align to 256 at
195 * See b/115946221,b/117942643
197 if (use_flags & (BO_USE_SW_MASK))
198 needs_alignment = true;
201 if (use_flags & (BO_USE_SCANOUT))
202 needs_alignment = true;
204 if (needs_alignment) {
205 uint32_t bytes_per_pixel = drv_bytes_per_pixel_from_format(format, 0);
206 width = ALIGN(width, 256 / bytes_per_pixel);
209 return dri_bo_create(bo, width, height, format, use_flags);
212 return amdgpu_create_bo_linear(bo, width, height, format, use_flags);
215 static int amdgpu_create_bo_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
216 uint32_t format, const uint64_t *modifiers,
219 bool only_use_linear = true;
221 for (uint32_t i = 0; i < count; ++i)
222 if (modifiers[i] != DRM_FORMAT_MOD_LINEAR)
223 only_use_linear = false;
226 return amdgpu_create_bo_linear(bo, width, height, format, BO_USE_SCANOUT);
228 return dri_bo_create_with_modifiers(bo, width, height, format, modifiers, count);
231 static int amdgpu_import_bo(struct bo *bo, struct drv_import_fd_data *data)
233 bool dri_tiling = data->format_modifiers[0] != DRM_FORMAT_MOD_LINEAR;
234 if (data->format_modifiers[0] == DRM_FORMAT_MOD_INVALID) {
235 struct combination *combo;
236 combo = drv_get_combination(bo->drv, data->format, data->use_flags);
240 dri_tiling = combo->metadata.tiling == TILE_TYPE_DRI;
244 return dri_bo_import(bo, data);
246 return drv_prime_bo_import(bo, data);
249 static int amdgpu_destroy_bo(struct bo *bo)
252 return dri_bo_destroy(bo);
254 return drv_gem_bo_destroy(bo);
257 static void *amdgpu_map_bo(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
260 union drm_amdgpu_gem_mmap gem_map;
263 return dri_bo_map(bo, vma, plane, map_flags);
265 memset(&gem_map, 0, sizeof(gem_map));
266 gem_map.in.handle = bo->handles[plane].u32;
268 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_AMDGPU_GEM_MMAP, &gem_map);
270 drv_log("DRM_IOCTL_AMDGPU_GEM_MMAP failed\n");
274 vma->length = bo->meta.total_size;
276 return mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
277 gem_map.out.addr_ptr);
280 static int amdgpu_unmap_bo(struct bo *bo, struct vma *vma)
283 return dri_bo_unmap(bo, vma);
285 return munmap(vma->addr, vma->length);
288 static int amdgpu_bo_invalidate(struct bo *bo, struct mapping *mapping)
291 union drm_amdgpu_gem_wait_idle wait_idle;
296 memset(&wait_idle, 0, sizeof(wait_idle));
297 wait_idle.in.handle = bo->handles[0].u32;
298 wait_idle.in.timeout = AMDGPU_TIMEOUT_INFINITE;
300 ret = drmCommandWriteRead(bo->drv->fd, DRM_AMDGPU_GEM_WAIT_IDLE, &wait_idle,
304 drv_log("DRM_AMDGPU_GEM_WAIT_IDLE failed with %d\n", ret);
308 if (ret == 0 && wait_idle.out.status)
309 drv_log("DRM_AMDGPU_GEM_WAIT_IDLE BO is busy\n");
314 static uint32_t amdgpu_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
317 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
318 /* Camera subsystem requires NV12. */
319 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE))
320 return DRM_FORMAT_NV12;
321 /*HACK: See b/28671744 */
322 return DRM_FORMAT_XBGR8888;
323 case DRM_FORMAT_FLEX_YCbCr_420_888:
324 return DRM_FORMAT_NV12;
330 const struct backend backend_amdgpu = {
333 .close = amdgpu_close,
334 .bo_create = amdgpu_create_bo,
335 .bo_create_with_modifiers = amdgpu_create_bo_with_modifiers,
336 .bo_destroy = amdgpu_destroy_bo,
337 .bo_import = amdgpu_import_bo,
338 .bo_map = amdgpu_map_bo,
339 .bo_unmap = amdgpu_unmap_bo,
340 .bo_invalidate = amdgpu_bo_invalidate,
341 .resolve_format = amdgpu_resolve_format,
342 .num_planes_from_modifier = dri_num_planes_from_modifier,