98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
/*
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* Copyright (c) 2014-2015 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 contributors
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* may be used to endorse or promote products derived from this software
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* 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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* Author: Sooraj Puthoor
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*/
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#ifndef __LOCAL_MEMORY_PIPELINE_HH__
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#define __LOCAL_MEMORY_PIPELINE_HH__
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#include <queue>
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#include <string>
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#include "gpu-compute/misc.hh"
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#include "params/ComputeUnit.hh"
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#include "sim/stats.hh"
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/*
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* @file local_memory_pipeline.hh
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*
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* The local memory pipeline issues newly created local memory packets
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* from pipeline to the LDS. This stage also retires previously issued
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* loads and stores that have returned from the LDS.
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*/
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class ComputeUnit;
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class Wavefront;
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class LocalMemPipeline
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{
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public:
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LocalMemPipeline(const ComputeUnitParams *params);
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void init(ComputeUnit *cu);
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void exec();
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template<typename c0, typename c1> void doSmReturn(GPUDynInstPtr m);
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std::queue<GPUDynInstPtr> &getLMReqFIFO() { return lmIssuedRequests; }
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std::queue<GPUDynInstPtr> &getLMRespFIFO() { return lmReturnedRequests; }
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bool
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isLMRespFIFOWrRdy() const
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{
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return lmReturnedRequests.size() < lmQueueSize;
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}
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bool
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isLMReqFIFOWrRdy(uint32_t pendReqs=0) const
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{
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return (lmIssuedRequests.size() + pendReqs) < lmQueueSize;
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}
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const std::string& name() const { return _name; }
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void regStats();
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private:
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ComputeUnit *computeUnit;
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std::string _name;
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int lmQueueSize;
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Stats::Scalar loadVrfBankConflictCycles;
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// Local Memory Request Fifo: all shared memory requests
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// are issued to this FIFO from the memory pipelines
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std::queue<GPUDynInstPtr> lmIssuedRequests;
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// Local Memory Response Fifo: all responses of shared memory
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// requests are sent to this FIFO from LDS
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std::queue<GPUDynInstPtr> lmReturnedRequests;
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};
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#endif // __LOCAL_MEMORY_PIPELINE_HH__
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