SNB_GMCH_GGMS_SHIFT 2805 drivers/gpu/drm/i915/i915_gem_gtt.c 	snb_gmch_ctl >>= SNB_GMCH_GGMS_SHIFT;
SNB_GMCH_GGMS_SHIFT 2828 drivers/gpu/drm/i915/i915_gem_gtt.c 	gmch_ctrl >>= SNB_GMCH_GGMS_SHIFT;