1*71f41f3eSFrançois Tigeot /* 2*71f41f3eSFrançois Tigeot * Copyright (c) 2014-2016 Intel Corporation 3*71f41f3eSFrançois Tigeot * 4*71f41f3eSFrançois Tigeot * Permission is hereby granted, free of charge, to any person obtaining a 5*71f41f3eSFrançois Tigeot * copy of this software and associated documentation files (the "Software"), 6*71f41f3eSFrançois Tigeot * to deal in the Software without restriction, including without limitation 7*71f41f3eSFrançois Tigeot * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8*71f41f3eSFrançois Tigeot * and/or sell copies of the Software, and to permit persons to whom the 9*71f41f3eSFrançois Tigeot * Software is furnished to do so, subject to the following conditions: 10*71f41f3eSFrançois Tigeot * 11*71f41f3eSFrançois Tigeot * The above copyright notice and this permission notice (including the next 12*71f41f3eSFrançois Tigeot * paragraph) shall be included in all copies or substantial portions of the 13*71f41f3eSFrançois Tigeot * Software. 14*71f41f3eSFrançois Tigeot * 15*71f41f3eSFrançois Tigeot * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16*71f41f3eSFrançois Tigeot * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17*71f41f3eSFrançois Tigeot * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18*71f41f3eSFrançois Tigeot * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19*71f41f3eSFrançois Tigeot * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20*71f41f3eSFrançois Tigeot * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21*71f41f3eSFrançois Tigeot * IN THE SOFTWARE. 22*71f41f3eSFrançois Tigeot */ 23*71f41f3eSFrançois Tigeot 24*71f41f3eSFrançois Tigeot #ifndef __INTEL_FRONTBUFFER_H__ 25*71f41f3eSFrançois Tigeot #define __INTEL_FRONTBUFFER_H__ 26*71f41f3eSFrançois Tigeot 27*71f41f3eSFrançois Tigeot struct drm_i915_private; 28*71f41f3eSFrançois Tigeot struct drm_i915_gem_object; 29*71f41f3eSFrançois Tigeot 30*71f41f3eSFrançois Tigeot void intel_frontbuffer_flip_prepare(struct drm_i915_private *dev_priv, 31*71f41f3eSFrançois Tigeot unsigned frontbuffer_bits); 32*71f41f3eSFrançois Tigeot void intel_frontbuffer_flip_complete(struct drm_i915_private *dev_priv, 33*71f41f3eSFrançois Tigeot unsigned frontbuffer_bits); 34*71f41f3eSFrançois Tigeot void intel_frontbuffer_flip(struct drm_i915_private *dev_priv, 35*71f41f3eSFrançois Tigeot unsigned frontbuffer_bits); 36*71f41f3eSFrançois Tigeot 37*71f41f3eSFrançois Tigeot void __intel_fb_obj_invalidate(struct drm_i915_gem_object *obj, 38*71f41f3eSFrançois Tigeot enum fb_op_origin origin, 39*71f41f3eSFrançois Tigeot unsigned int frontbuffer_bits); 40*71f41f3eSFrançois Tigeot void __intel_fb_obj_flush(struct drm_i915_gem_object *obj, 41*71f41f3eSFrançois Tigeot bool retire, 42*71f41f3eSFrançois Tigeot enum fb_op_origin origin, 43*71f41f3eSFrançois Tigeot unsigned int frontbuffer_bits); 44*71f41f3eSFrançois Tigeot 45*71f41f3eSFrançois Tigeot /** 46*71f41f3eSFrançois Tigeot * intel_fb_obj_invalidate - invalidate frontbuffer object 47*71f41f3eSFrançois Tigeot * @obj: GEM object to invalidate 48*71f41f3eSFrançois Tigeot * @origin: which operation caused the invalidation 49*71f41f3eSFrançois Tigeot * 50*71f41f3eSFrançois Tigeot * This function gets called every time rendering on the given object starts and 51*71f41f3eSFrançois Tigeot * frontbuffer caching (fbc, low refresh rate for DRRS, panel self refresh) must 52*71f41f3eSFrançois Tigeot * be invalidated. For ORIGIN_CS any subsequent invalidation will be delayed 53*71f41f3eSFrançois Tigeot * until the rendering completes or a flip on this frontbuffer plane is 54*71f41f3eSFrançois Tigeot * scheduled. 55*71f41f3eSFrançois Tigeot */ 56*71f41f3eSFrançois Tigeot static inline void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj, 57*71f41f3eSFrançois Tigeot enum fb_op_origin origin) 58*71f41f3eSFrançois Tigeot { 59*71f41f3eSFrançois Tigeot unsigned int frontbuffer_bits; 60*71f41f3eSFrançois Tigeot 61*71f41f3eSFrançois Tigeot frontbuffer_bits = atomic_read(&obj->frontbuffer_bits); 62*71f41f3eSFrançois Tigeot if (!frontbuffer_bits) 63*71f41f3eSFrançois Tigeot return; 64*71f41f3eSFrançois Tigeot 65*71f41f3eSFrançois Tigeot __intel_fb_obj_invalidate(obj, origin, frontbuffer_bits); 66*71f41f3eSFrançois Tigeot } 67*71f41f3eSFrançois Tigeot 68*71f41f3eSFrançois Tigeot /** 69*71f41f3eSFrançois Tigeot * intel_fb_obj_flush - flush frontbuffer object 70*71f41f3eSFrançois Tigeot * @obj: GEM object to flush 71*71f41f3eSFrançois Tigeot * @retire: set when retiring asynchronous rendering 72*71f41f3eSFrançois Tigeot * @origin: which operation caused the flush 73*71f41f3eSFrançois Tigeot * 74*71f41f3eSFrançois Tigeot * This function gets called every time rendering on the given object has 75*71f41f3eSFrançois Tigeot * completed and frontbuffer caching can be started again. If @retire is true 76*71f41f3eSFrançois Tigeot * then any delayed flushes will be unblocked. 77*71f41f3eSFrançois Tigeot */ 78*71f41f3eSFrançois Tigeot static inline void intel_fb_obj_flush(struct drm_i915_gem_object *obj, 79*71f41f3eSFrançois Tigeot bool retire, 80*71f41f3eSFrançois Tigeot enum fb_op_origin origin) 81*71f41f3eSFrançois Tigeot { 82*71f41f3eSFrançois Tigeot unsigned int frontbuffer_bits; 83*71f41f3eSFrançois Tigeot 84*71f41f3eSFrançois Tigeot frontbuffer_bits = atomic_read(&obj->frontbuffer_bits); 85*71f41f3eSFrançois Tigeot if (!frontbuffer_bits) 86*71f41f3eSFrançois Tigeot return; 87*71f41f3eSFrançois Tigeot 88*71f41f3eSFrançois Tigeot __intel_fb_obj_flush(obj, retire, origin, frontbuffer_bits); 89*71f41f3eSFrançois Tigeot } 90*71f41f3eSFrançois Tigeot 91*71f41f3eSFrançois Tigeot #endif /* __INTEL_FRONTBUFFER_H__ */ 92