int (*batchbuffer_reloc)(struct i915_winsys_batchbuffer *batch,
struct i915_winsys_buffer *reloc,
enum i915_winsys_buffer_usage usage,
int (*batchbuffer_reloc)(struct i915_winsys_batchbuffer *batch,
struct i915_winsys_buffer *reloc,
enum i915_winsys_buffer_usage usage,
struct i915_winsys_buffer *
(*buffer_from_handle)(struct i915_winsys *iws,
struct winsys_handle *whandle,
struct i915_winsys_buffer *
(*buffer_from_handle)(struct i915_winsys *iws,
struct winsys_handle *whandle,