diff options
| -rw-r--r-- | linux-core/nouveau_buffer.c | 41 |
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) |