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Diffstat (limited to 'src/gpu-compute/scoreboard_check_stage.hh')
-rw-r--r-- | src/gpu-compute/scoreboard_check_stage.hh | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/gpu-compute/scoreboard_check_stage.hh b/src/gpu-compute/scoreboard_check_stage.hh new file mode 100644 index 000000000..099597afb --- /dev/null +++ b/src/gpu-compute/scoreboard_check_stage.hh @@ -0,0 +1,106 @@ +/* + * Copyright (c) 2014-2015 Advanced Micro Devices, Inc. + * All rights reserved. + * + * For use for simulation and test purposes only + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. Neither the name of the copyright holder nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * Author: Sooraj Puthoor + */ + +#ifndef __SCOREBOARD_CHECK_STAGE_HH__ +#define __SCOREBOARD_CHECK_STAGE_HH__ + +#include <cstdint> +#include <string> +#include <utility> +#include <vector> + +class ComputeUnit; +class Wavefront; + +struct ComputeUnitParams; + +enum WAVE_STATUS +{ + BLOCKED = 0, + READY +}; + +/* + * Scoreboard check stage. + * All wavefronts are analyzed to see if they are ready + * to be executed this cycle. Both structural and data + * hazards are considered while marking a wave "ready" + * for execution. After analysis, the ready waves are + * added to readyList. + */ +class ScoreboardCheckStage +{ + public: + ScoreboardCheckStage(const ComputeUnitParams* params); + ~ScoreboardCheckStage(); + void init(ComputeUnit *cu); + void exec(); + + // Stats related variables and methods + const std::string& name() const { return _name; } + void regStats(); + + private: + void collectStatistics(Wavefront *curWave, int unitId); + void initStatistics(); + ComputeUnit *computeUnit; + uint32_t numSIMDs; + uint32_t numMemUnits; + uint32_t numGlbMemPipes; + uint32_t numShrMemPipes; + + // flag per vector SIMD unit that is set when there is at least one + // WF that has a vector ALU instruction as the oldest in its + // Instruction Buffer + std::vector<bool> *vectorAluInstAvail; + int lastGlbMemSimd; + int lastShrMemSimd; + + int *glbMemInstAvail; + int *shrMemInstAvail; + // List of waves which are ready to be scheduled. + // Each execution resource has a ready list + std::vector<std::vector<Wavefront*>*> readyList; + + // Stores the status of waves. A READY implies the + // wave is ready to be scheduled this cycle and + // is already present in the readyList + std::vector<std::vector<std::pair<Wavefront*, WAVE_STATUS>>*> + waveStatusList; + + std::string _name; +}; + +#endif // __SCOREBOARD_CHECK_STAGE_HH__ |