+ /**
+ * Create a tiled buffer.
+ *
+ * *stride, height are in bytes. The winsys tries to allocate the buffer with
+ * the tiling mode provide in *tiling. If tiling is no possible, *tiling will
+ * be set to I915_TILE_NONE. The calculated stride (incorporateing hw/kernel
+ * requirements) is always returned in *stride.
+ */
+ struct i915_winsys_buffer *
+ (*buffer_create_tiled)(struct i915_winsys *iws,
+ unsigned *stride, unsigned height,
+ enum i915_winsys_buffer_tile *tiling,
+ enum i915_winsys_buffer_type type);
+