1/* 2 * Copyright (c) 2014-2015 Advanced Micro Devices, Inc. 3 * All rights reserved. 4 * 5 * For use for simulation and test purposes only 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright notice, 11 * this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the copyright holder nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 * Author: Sooraj Puthoor 34 */ 35 36#ifndef __SCOREBOARD_CHECK_STAGE_HH__ 37#define __SCOREBOARD_CHECK_STAGE_HH__ 38 39#include <cstdint> 40#include <string> 41#include <utility> 42#include <vector> 43 44class ComputeUnit; 45class Wavefront; 46 47struct ComputeUnitParams; 48 49enum WAVE_STATUS 50{ 51 BLOCKED = 0, 52 READY 53}; 54 55/* 56 * Scoreboard check stage. 57 * All wavefronts are analyzed to see if they are ready 58 * to be executed this cycle. Both structural and data 59 * hazards are considered while marking a wave "ready" 60 * for execution. After analysis, the ready waves are 61 * added to readyList. 62 */ 63class ScoreboardCheckStage 64{ 65 public: 66 ScoreboardCheckStage(const ComputeUnitParams* params); 67 ~ScoreboardCheckStage(); 68 void init(ComputeUnit *cu); 69 void exec(); 70 71 // Stats related variables and methods 72 const std::string& name() const { return _name; } 73 void regStats(); 74 75 private: 76 void collectStatistics(Wavefront *curWave, int unitId); 77 void initStatistics(); 78 ComputeUnit *computeUnit; 79 uint32_t numSIMDs; 80 uint32_t numMemUnits; |
81 uint32_t numShrMemPipes; 82 83 // flag per vector SIMD unit that is set when there is at least one 84 // WF that has a vector ALU instruction as the oldest in its 85 // Instruction Buffer 86 std::vector<bool> *vectorAluInstAvail; 87 int lastGlbMemSimd; 88 int lastShrMemSimd; 89 90 int *glbMemInstAvail; 91 int *shrMemInstAvail; 92 // List of waves which are ready to be scheduled. 93 // Each execution resource has a ready list 94 std::vector<std::vector<Wavefront*>*> readyList; 95 96 // Stores the status of waves. A READY implies the 97 // wave is ready to be scheduled this cycle and 98 // is already present in the readyList 99 std::vector<std::vector<std::pair<Wavefront*, WAVE_STATUS>>*> 100 waveStatusList; 101 102 std::string _name; 103}; 104 105#endif // __SCOREBOARD_CHECK_STAGE_HH__ |