fc4caa6ad0
These were universally removed a while ago, but a bunch have crept back in. Remove them. Change-Id: I3cb5b9f40c9c19aafb5e39a51d1baeae60a591c0 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/40335 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Reviewed-by: Matthew Poremba <matthew.poremba@amd.com> Maintainer: Gabe Black <gabe.black@gmail.com>
122 lines
4.3 KiB
C++
122 lines
4.3 KiB
C++
/*
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* Copyright (c) 2018 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* For use for simulation and test purposes only
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __GPU_COMPUTE_COMM_HH__
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#define __GPU_COMPUTE_COMM_HH__
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#include <array>
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#include <vector>
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#include "gpu-compute/exec_stage.hh"
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#include "gpu-compute/misc.hh"
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struct ComputeUnitParams;
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class Wavefront;
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class PipeStageIFace
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{
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public:
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/**
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* Reset the pipe stage interface. This is called to remove
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* any stale state from the pipe stage that is leftover from
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* the prior cycle. This is needed when stages do not actually
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* consume the information passed via the stage interfaces.
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*/
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virtual void reset() = 0;
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};
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/**
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* Communication interface between ScoreboardCheck and Schedule stages.
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*/
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class ScoreboardCheckToSchedule : public PipeStageIFace
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{
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public:
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ScoreboardCheckToSchedule() = delete;
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ScoreboardCheckToSchedule(const ComputeUnitParams &p);
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void reset() override;
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/**
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* Mark the WF as ready for execution on a particular functional
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* unit.
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*/
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void markWFReady(Wavefront *wf, int func_unit_id);
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/**
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* Returns the number of ready lists (i.e., the number of functional
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* units). Each functional unit has its own list of ready WFs to
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* consider for arbitration.
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*/
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int numReadyLists() const;
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/**
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* TODO: These methods expose this class' implementation too much by
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* returning references to its internal data structures directly.
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* These are to support legacy functionality in the CU pipeline.
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* They should be removed eventually for an API that hides such
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* implementation details.
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*/
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std::vector<Wavefront*>& readyWFs(int func_unit_id);
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// TODO: Leftover from old CU code, needs to go away.
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void updateReadyList(int func_unit_id);
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private:
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std::vector<std::vector<Wavefront*>> _readyWFs;
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};
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/**
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* Communication interface between Schedule and Execute stages.
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*/
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class ScheduleToExecute : public PipeStageIFace
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{
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public:
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ScheduleToExecute() = delete;
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ScheduleToExecute(const ComputeUnitParams &p);
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void reset() override;
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GPUDynInstPtr& readyInst(int func_unit_id);
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/**
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* Once the scheduler has chosen a winning WF for execution, and
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* after the WF's oldest instruction's operands have been read,
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* this method is used to mark the instruction as ready to execute.
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* This puts it on the dispatch list to be consumed by the execute
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* stage.
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*/
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void dispatchTransition(const GPUDynInstPtr &gpu_dyn_inst,
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int func_unit_id, DISPATCH_STATUS disp_status);
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void dispatchTransition(int func_unit_id, DISPATCH_STATUS disp_status);
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DISPATCH_STATUS dispatchStatus(int func_unit_id) const;
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private:
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std::vector<GPUDynInstPtr> _readyInsts;
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std::vector<DISPATCH_STATUS> _dispatchStatus;
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};
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#endif // __GPU_COMPUTE_COMM_HH__
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