[Mesa-dev] [PATCH 04/26] winsys/amdgpu: allow drivers to set/get opaque metadata

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/drivers/radeon/radeon_winsys.h | 10 ++++++++++
 src/gallium/winsys/amdgpu/drm/amdgpu_bo.c  |  5 +++++
 2 files changed, 15 insertions(+)

diff --git a/src/gallium/drivers/radeon/radeon_winsys.h b/src/gallium/drivers/radeon/radeon_winsys.h
index 566322c..5ca2414 100644
--- a/src/gallium/drivers/radeon/radeon_winsys.h
+++ b/src/gallium/drivers/radeon/radeon_winsys.h
@@ -278,6 +278,9 @@ struct radeon_info {
 
 /* Tiling info for display code, DRI sharing, and other data. */
 struct radeon_bo_metadata {
+    /* Tiling flags describing the texture layout for display code
+     * and DRI sharing.
+     */
     enum radeon_bo_layout   microtile;
     enum radeon_bo_layout   macrotile;
     unsigned                pipe_config;
@@ -289,6 +292,13 @@ struct radeon_bo_metadata {
     unsigned                num_banks;
     unsigned                stride;
     bool                    scanout;
+
+    /* Additional metadata associated with the buffer, in bytes.
+     * The maximum size is 64 * 4. This is opaque for the winsys & kernel.
+     * Supported by amdgpu only.
+     */
+    uint32_t                size_metadata;
+    uint32_t                metadata[64];
 };
 
 enum radeon_feature_id {
diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
index 10ac2b2..b670f26 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
@@ -417,6 +417,9 @@ static void amdgpu_buffer_get_metadata(struct pb_buffer *_buf,
    md->tile_split = eg_tile_split(AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT));
    md->mtilea = 1 << AMDGPU_TILING_GET(tiling_flags, MACRO_TILE_ASPECT);
    md->scanout = AMDGPU_TILING_GET(tiling_flags, MICRO_TILE_MODE) == 0; /* DISPLAY */
+
+   md->size_metadata = info.metadata.size_metadata;
+   memcpy(md->metadata, info.metadata.umd_metadata, sizeof(md->metadata));
 }
 
 static void amdgpu_buffer_set_metadata(struct pb_buffer *_buf,
@@ -447,6 +450,8 @@ static void amdgpu_buffer_set_metadata(struct pb_buffer *_buf,
       tiling_flags |= AMDGPU_TILING_SET(MICRO_TILE_MODE, 1); /* THIN_MICRO_TILING */
 
    metadata.tiling_info = tiling_flags;
+   metadata.size_metadata = md->size_metadata;
+   memcpy(metadata.umd_metadata, md->metadata, sizeof(md->metadata));
 
    amdgpu_bo_set_metadata(bo->bo, &metadata);
 }
-- 
2.5.0