/* * Copyright (c) 2014-2016 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #ifndef __INTEL_FRONTBUFFER_H__#define __INTEL_FRONTBUFFER_H__ struct drm_i915_private;struct drm_i915_gem_object; void intel_frontbuffer_flip_prepare(struct drm_i915_private *dev_priv,				    unsigned frontbuffer_bits);void intel_frontbuffer_flip_complete(struct drm_i915_private *dev_priv,				     unsigned frontbuffer_bits);void intel_frontbuffer_flip(struct drm_i915_private *dev_priv,			    unsigned frontbuffer_bits); void __intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,			       enum fb_op_origin origin,			       unsigned int frontbuffer_bits);void __intel_fb_obj_flush(struct drm_i915_gem_object *obj,			  enum fb_op_origin origin,			  unsigned int frontbuffer_bits); /** * intel_fb_obj_invalidate - invalidate frontbuffer object * @obj: GEM object to invalidate * @origin: which operation caused the invalidation * * This function gets called every time rendering on the given object starts and * frontbuffer caching (fbc, low refresh rate for DRRS, panel self refresh) must * be invalidated. For ORIGIN_CS any subsequent invalidation will be delayed * until the rendering completes or a flip on this frontbuffer plane is * scheduled. */static inline bool intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,					   enum fb_op_origin origin){	unsigned int frontbuffer_bits; 	frontbuffer_bits = atomic_read(&obj->frontbuffer_bits);	if (!frontbuffer_bits)		return false; 	__intel_fb_obj_invalidate(obj, origin, frontbuffer_bits);	return true;} /** * intel_fb_obj_flush - flush frontbuffer object * @obj: GEM object to flush * @origin: which operation caused the flush * * This function gets called every time rendering on the given object has * completed and frontbuffer caching can be started again. */static inline void intel_fb_obj_flush(struct drm_i915_gem_object *obj,				      enum fb_op_origin origin){	unsigned int frontbuffer_bits; 	frontbuffer_bits = atomic_read(&obj->frontbuffer_bits);	if (!frontbuffer_bits)		return; 	__intel_fb_obj_flush(obj, origin, frontbuffer_bits);} #endif /* __INTEL_FRONTBUFFER_H__ */