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-rw-r--r--linux-core/nouveau_buffer.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/linux-core/nouveau_buffer.c b/linux-core/nouveau_buffer.c
index c40dff6b..0dd4a53a 100644
--- a/linux-core/nouveau_buffer.c
+++ b/linux-core/nouveau_buffer.c
@@ -143,6 +143,7 @@ nouveau_bo_evict_mask(struct drm_buffer_object *bo)
return 0;
}
+
/* GPU-assisted copy using NV_MEMORY_TO_MEMORY_FORMAT, can access
* DRM_BO_MEM_{VRAM,PRIV0,TT} directly.
*/
@@ -195,6 +196,46 @@ nouveau_bo_move_m2mf(struct drm_buffer_object *bo, int evict, int no_wait,
DRM_FENCE_TYPE_EXE, 0, new_mem);
}
+/* Flip pages into the GART and move if we can. */
+static int
+nouveau_bo_flip(struct drm_buffer_object *bo, int evict, int no_wait,
+ struct drm_bo_mem_reg *new_mem)
+{
+ struct drm_device *dev = bo->dev;
+ struct drm_bo_mem_reg tmp_mem;
+ int ret;
+
+ tmp_mem = *new_mem;
+ tmp_mem.mm_node = NULL;
+ tmp_mem.mask = DRM_BO_FLAG_MEM_TT |
+ DRM_BO_FLAG_CACHED | DRM_BO_FLAG_FORCE_CACHING;
+
+ ret = drm_bo_mem_space(bo, &tmp_mem, no_wait);
+
+ if (ret)
+ return ret;
+
+ ret = drm_bind_ttm(bo->ttm, &tmp_mem);
+ if (ret)
+ goto out_cleanup;
+
+ ret = nouveau_bo_move_m2mf(bo, 1, no_wait, &tmp_mem);
+ if (ret)
+ goto out_cleanup;
+
+ ret = drm_bo_move_ttm(bo, evict, no_wait, new_mem);
+
+out_cleanup:
+ if (tmp_mem.mm_node) {
+ mutex_lock(&dev->struct_mutex);
+ if (tmp_mem.mm_node != bo->pinned_node)
+ drm_mm_put_block(tmp_mem.mm_node);
+ tmp_mem.mm_node = NULL;
+ mutex_unlock(&dev->struct_mutex);
+ }
+ return ret;
+}
+
static int
nouveau_bo_move(struct drm_buffer_object *bo, int evict, int no_wait,
struct drm_bo_mem_reg *new_mem)