111308Santhony.gutierrez@amd.com/* 212697Santhony.gutierrez@amd.com * Copyright (c) 2014-2017 Advanced Micro Devices, Inc. 311308Santhony.gutierrez@amd.com * All rights reserved. 411308Santhony.gutierrez@amd.com * 511308Santhony.gutierrez@amd.com * For use for simulation and test purposes only 611308Santhony.gutierrez@amd.com * 711308Santhony.gutierrez@amd.com * Redistribution and use in source and binary forms, with or without 811308Santhony.gutierrez@amd.com * modification, are permitted provided that the following conditions are met: 911308Santhony.gutierrez@amd.com * 1011308Santhony.gutierrez@amd.com * 1. Redistributions of source code must retain the above copyright notice, 1111308Santhony.gutierrez@amd.com * this list of conditions and the following disclaimer. 1211308Santhony.gutierrez@amd.com * 1311308Santhony.gutierrez@amd.com * 2. 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Neither the name of the copyright holder nor the names of its 1812697Santhony.gutierrez@amd.com * contributors may be used to endorse or promote products derived from this 1912697Santhony.gutierrez@amd.com * software without specific prior written permission. 2011308Santhony.gutierrez@amd.com * 2111308Santhony.gutierrez@amd.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 2211308Santhony.gutierrez@amd.com * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2311308Santhony.gutierrez@amd.com * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2411308Santhony.gutierrez@amd.com * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 2511308Santhony.gutierrez@amd.com * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2611308Santhony.gutierrez@amd.com * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2711308Santhony.gutierrez@amd.com * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2811308Santhony.gutierrez@amd.com * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2911308Santhony.gutierrez@amd.com * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3011308Santhony.gutierrez@amd.com * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 3111308Santhony.gutierrez@amd.com * POSSIBILITY OF SUCH DAMAGE. 3211308Santhony.gutierrez@amd.com * 3312697Santhony.gutierrez@amd.com * Authors: Anthony Gutierrez, 3412697Santhony.gutierrez@amd.com * Brad Beckmann, 3512697Santhony.gutierrez@amd.com * Sooraj Puthoor 3611308Santhony.gutierrez@amd.com */ 3711308Santhony.gutierrez@amd.com 3811308Santhony.gutierrez@amd.com#ifndef __FETCH_UNIT_HH__ 3911308Santhony.gutierrez@amd.com#define __FETCH_UNIT_HH__ 4011308Santhony.gutierrez@amd.com 4111308Santhony.gutierrez@amd.com#include <string> 4211308Santhony.gutierrez@amd.com#include <utility> 4311308Santhony.gutierrez@amd.com#include <vector> 4411308Santhony.gutierrez@amd.com 4511308Santhony.gutierrez@amd.com#include "arch/gpu_decoder.hh" 4611308Santhony.gutierrez@amd.com#include "base/statistics.hh" 4711308Santhony.gutierrez@amd.com#include "config/the_gpu_isa.hh" 4811308Santhony.gutierrez@amd.com#include "gpu-compute/scheduler.hh" 4911308Santhony.gutierrez@amd.com#include "mem/packet.hh" 5011308Santhony.gutierrez@amd.com 5111308Santhony.gutierrez@amd.comclass ComputeUnit; 5211308Santhony.gutierrez@amd.comclass Wavefront; 5311308Santhony.gutierrez@amd.com 5411308Santhony.gutierrez@amd.comclass FetchUnit 5511308Santhony.gutierrez@amd.com{ 5611308Santhony.gutierrez@amd.com public: 5711308Santhony.gutierrez@amd.com FetchUnit(const ComputeUnitParams* params); 5811308Santhony.gutierrez@amd.com ~FetchUnit(); 5911308Santhony.gutierrez@amd.com void init(ComputeUnit *cu); 6011308Santhony.gutierrez@amd.com void exec(); 6111308Santhony.gutierrez@amd.com void bindWaveList(std::vector<Wavefront*> *list); 6211308Santhony.gutierrez@amd.com void initiateFetch(Wavefront *wavefront); 6311308Santhony.gutierrez@amd.com void fetch(PacketPtr pkt, Wavefront *wavefront); 6411308Santhony.gutierrez@amd.com void processFetchReturn(PacketPtr pkt); 6511308Santhony.gutierrez@amd.com static uint32_t globalFetchUnitID; 6611308Santhony.gutierrez@amd.com 6711308Santhony.gutierrez@amd.com private: 6811308Santhony.gutierrez@amd.com bool timingSim; 6911308Santhony.gutierrez@amd.com ComputeUnit *computeUnit; 7011308Santhony.gutierrez@amd.com TheGpuISA::Decoder decoder; 7111308Santhony.gutierrez@amd.com 7211308Santhony.gutierrez@amd.com // Fetch scheduler; Selects one wave from 7311308Santhony.gutierrez@amd.com // the fetch queue for instruction fetching. 7411308Santhony.gutierrez@amd.com // The selection is made according to 7511308Santhony.gutierrez@amd.com // a scheduling policy 7611308Santhony.gutierrez@amd.com Scheduler fetchScheduler; 7711308Santhony.gutierrez@amd.com 7811308Santhony.gutierrez@amd.com // Stores the list of waves that are 7911308Santhony.gutierrez@amd.com // ready to be fetched this cycle 8011308Santhony.gutierrez@amd.com std::vector<Wavefront*> fetchQueue; 8111308Santhony.gutierrez@amd.com 8211308Santhony.gutierrez@amd.com // Stores the fetch status of all waves dispatched to this SIMD. 8311308Santhony.gutierrez@amd.com // TRUE implies the wave is ready to fetch and is already 8411308Santhony.gutierrez@amd.com // moved to fetchQueue 8511308Santhony.gutierrez@amd.com std::vector<std::pair<Wavefront*, bool>> fetchStatusQueue; 8611308Santhony.gutierrez@amd.com 8711308Santhony.gutierrez@amd.com // Pointer to list of waves dispatched on to this SIMD unit 8811308Santhony.gutierrez@amd.com std::vector<Wavefront*> *waveList; 8911308Santhony.gutierrez@amd.com}; 9011308Santhony.gutierrez@amd.com 9111308Santhony.gutierrez@amd.com#endif // __FETCH_UNIT_HH__ 92