111308Santhony.gutierrez@amd.com/* 211308Santhony.gutierrez@amd.com * Copyright (c) 2014-2015 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. Redistributions in binary form must reproduce the above copyright notice, 1411308Santhony.gutierrez@amd.com * this list of conditions and the following disclaimer in the documentation 1511308Santhony.gutierrez@amd.com * and/or other materials provided with the distribution. 1611308Santhony.gutierrez@amd.com * 1712697Santhony.gutierrez@amd.com * 3. 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 * Sooraj Puthoor 3511308Santhony.gutierrez@amd.com */ 3611308Santhony.gutierrez@amd.com 3711308Santhony.gutierrez@amd.com#include "gpu-compute/fetch_stage.hh" 3811308Santhony.gutierrez@amd.com 3911308Santhony.gutierrez@amd.com#include "gpu-compute/compute_unit.hh" 4011308Santhony.gutierrez@amd.com#include "gpu-compute/wavefront.hh" 4111308Santhony.gutierrez@amd.com 4211308Santhony.gutierrez@amd.comFetchStage::FetchStage(const ComputeUnitParams* p) : numSIMDs(p->num_SIMDs), 4311308Santhony.gutierrez@amd.com computeUnit(nullptr) 4411308Santhony.gutierrez@amd.com{ 4511308Santhony.gutierrez@amd.com for (int j = 0; j < numSIMDs; ++j) { 4611308Santhony.gutierrez@amd.com FetchUnit newFetchUnit(p); 4711308Santhony.gutierrez@amd.com fetchUnit.push_back(newFetchUnit); 4811308Santhony.gutierrez@amd.com } 4911308Santhony.gutierrez@amd.com} 5011308Santhony.gutierrez@amd.com 5111308Santhony.gutierrez@amd.comFetchStage::~FetchStage() 5211308Santhony.gutierrez@amd.com{ 5311308Santhony.gutierrez@amd.com fetchUnit.clear(); 5411308Santhony.gutierrez@amd.com} 5511308Santhony.gutierrez@amd.com 5611308Santhony.gutierrez@amd.comvoid 5711308Santhony.gutierrez@amd.comFetchStage::init(ComputeUnit *cu) 5811308Santhony.gutierrez@amd.com{ 5911308Santhony.gutierrez@amd.com computeUnit = cu; 6011308Santhony.gutierrez@amd.com _name = computeUnit->name() + ".FetchStage"; 6111308Santhony.gutierrez@amd.com 6211308Santhony.gutierrez@amd.com for (int j = 0; j < numSIMDs; ++j) { 6311308Santhony.gutierrez@amd.com fetchUnit[j].bindWaveList(&computeUnit->wfList[j]); 6411308Santhony.gutierrez@amd.com fetchUnit[j].init(computeUnit); 6511308Santhony.gutierrez@amd.com } 6611308Santhony.gutierrez@amd.com} 6711308Santhony.gutierrez@amd.com 6811308Santhony.gutierrez@amd.comvoid 6911308Santhony.gutierrez@amd.comFetchStage::exec() 7011308Santhony.gutierrez@amd.com{ 7111308Santhony.gutierrez@amd.com for (int j = 0; j < numSIMDs; ++j) { 7211308Santhony.gutierrez@amd.com fetchUnit[j].exec(); 7311308Santhony.gutierrez@amd.com } 7411308Santhony.gutierrez@amd.com} 7511308Santhony.gutierrez@amd.com 7611308Santhony.gutierrez@amd.comvoid 7711308Santhony.gutierrez@amd.comFetchStage::processFetchReturn(PacketPtr pkt) 7811308Santhony.gutierrez@amd.com{ 7911308Santhony.gutierrez@amd.com ComputeUnit::SQCPort::SenderState *sender_state = 8011308Santhony.gutierrez@amd.com safe_cast<ComputeUnit::SQCPort::SenderState*>(pkt->senderState); 8111308Santhony.gutierrez@amd.com 8211308Santhony.gutierrez@amd.com Wavefront *wavefront = sender_state->wavefront; 8311308Santhony.gutierrez@amd.com 8411308Santhony.gutierrez@amd.com const unsigned num_instructions = pkt->req->getSize() / 8511308Santhony.gutierrez@amd.com sizeof(TheGpuISA::RawMachInst); 8611308Santhony.gutierrez@amd.com 8711308Santhony.gutierrez@amd.com instFetchInstReturned.sample(num_instructions); 8811308Santhony.gutierrez@amd.com uint32_t simdId = wavefront->simdId; 8911308Santhony.gutierrez@amd.com fetchUnit[simdId].processFetchReturn(pkt); 9011308Santhony.gutierrez@amd.com} 9111308Santhony.gutierrez@amd.com 9211308Santhony.gutierrez@amd.comvoid 9311308Santhony.gutierrez@amd.comFetchStage::fetch(PacketPtr pkt, Wavefront *wavefront) 9411308Santhony.gutierrez@amd.com{ 9511308Santhony.gutierrez@amd.com fetchUnit[wavefront->simdId].fetch(pkt, wavefront); 9611308Santhony.gutierrez@amd.com} 9711308Santhony.gutierrez@amd.com 9811308Santhony.gutierrez@amd.comvoid 9911308Santhony.gutierrez@amd.comFetchStage::regStats() 10011308Santhony.gutierrez@amd.com{ 10111308Santhony.gutierrez@amd.com instFetchInstReturned 10211308Santhony.gutierrez@amd.com .init(1, 32, 1) 10311308Santhony.gutierrez@amd.com .name(name() + ".inst_fetch_instr_returned") 10411308Santhony.gutierrez@amd.com .desc("For each instruction fetch request recieved record how many " 10511308Santhony.gutierrez@amd.com "instructions you got from it") 10611308Santhony.gutierrez@amd.com ; 10711308Santhony.gutierrez@amd.com} 108