extern struct ttm_placement vmw_mob_ne_placement;
 extern struct ttm_placement vmw_nonfixed_placement;
 extern struct ttm_bo_driver vmw_bo_driver;
-extern int vmw_bo_map_dma(struct ttm_buffer_object *bo);
-extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo);
 extern const struct vmw_sg_table *
 vmw_bo_sg_table(struct ttm_buffer_object *bo);
 extern int vmw_bo_create_and_populate(struct vmw_private *dev_priv,
 
        vmw_tt->mapped = false;
 }
 
-
-/**
- * vmw_bo_map_dma - Make sure buffer object pages are visible to the device
- *
- * @bo: Pointer to a struct ttm_buffer_object
- *
- * Wrapper around vmw_ttm_map_dma, that takes a TTM buffer object pointer
- * instead of a pointer to a struct vmw_ttm_backend as argument.
- * Note that the buffer object must be either pinned or reserved before
- * calling this function.
- */
-int vmw_bo_map_dma(struct ttm_buffer_object *bo)
-{
-       struct vmw_ttm_tt *vmw_tt =
-               container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm);
-
-       return vmw_ttm_map_dma(vmw_tt);
-}
-
-
-/**
- * vmw_bo_unmap_dma - Make sure buffer object pages are visible to the device
- *
- * @bo: Pointer to a struct ttm_buffer_object
- *
- * Wrapper around vmw_ttm_unmap_dma, that takes a TTM buffer object pointer
- * instead of a pointer to a struct vmw_ttm_backend as argument.
- */
-void vmw_bo_unmap_dma(struct ttm_buffer_object *bo)
-{
-       struct vmw_ttm_tt *vmw_tt =
-               container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm);
-
-       vmw_ttm_unmap_dma(vmw_tt);
-}
-
-
 /**
  * vmw_bo_sg_table - Return a struct vmw_sg_table object for a
  * TTM buffer object
 
        ret = ttm_bo_reserve(bo, false, true, NULL);
        BUG_ON(ret != 0);
-       ret = vmw_bo_driver.ttm_tt_populate(bo->ttm, &ctx);
-       if (likely(ret == 0))
-               ret = vmw_bo_map_dma(bo);
+       ret = vmw_ttm_populate(bo->ttm, &ctx);
+       if (likely(ret == 0)) {
+               struct vmw_ttm_tt *vmw_tt =
+                       container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm);
+               ret = vmw_ttm_map_dma(vmw_tt);
+       }
 
        ttm_bo_unreserve(bo);