/* * 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.
*/
/* * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is * considered to be the frontbuffer for the given plane interface-wise. This * doesn't mean that the hw necessarily already scans it out, but that any * rendering (by the cpu or gpu) will land in the frontbuffer eventually. * * We have one bit per pipe and per scanout plane type.
*/ #define INTEL_FRONTBUFFER_BITS_PER_PIPE 8 #define INTEL_FRONTBUFFER(pipe, plane_id) \
BIT((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)); #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
BIT(INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)) #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
GENMASK(INTEL_FRONTBUFFER_BITS_PER_PIPE * ((pipe) + 1) - 1, \
INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
/** * intel_frontbuffer_invalidate - invalidate frontbuffer object * @front: 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.
*/ staticinlinebool intel_frontbuffer_invalidate(struct intel_frontbuffer *front, enum fb_op_origin origin)
{ unsignedint frontbuffer_bits;
if (!front) returnfalse;
frontbuffer_bits = atomic_read(&front->bits); if (!frontbuffer_bits) returnfalse;
/** * intel_frontbuffer_flush - flush frontbuffer object * @front: 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.
*/ staticinlinevoid intel_frontbuffer_flush(struct intel_frontbuffer *front, enum fb_op_origin origin)
{ unsignedint frontbuffer_bits;
if (!front) return;
frontbuffer_bits = atomic_read(&front->bits); if (!frontbuffer_bits) return;
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