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Diffstat (limited to 'src/gpu-compute/fetch_unit.hh')
-rw-r--r-- | src/gpu-compute/fetch_unit.hh | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/gpu-compute/fetch_unit.hh b/src/gpu-compute/fetch_unit.hh new file mode 100644 index 000000000..c7c6afb3c --- /dev/null +++ b/src/gpu-compute/fetch_unit.hh @@ -0,0 +1,89 @@ +/* + * 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: Brad Beckmann, Sooraj Puthoor + */ + +#ifndef __FETCH_UNIT_HH__ +#define __FETCH_UNIT_HH__ + +#include <string> +#include <utility> +#include <vector> + +#include "arch/gpu_decoder.hh" +#include "base/statistics.hh" +#include "config/the_gpu_isa.hh" +#include "gpu-compute/scheduler.hh" +#include "mem/packet.hh" + +class ComputeUnit; +class Wavefront; + +class FetchUnit +{ + public: + FetchUnit(const ComputeUnitParams* params); + ~FetchUnit(); + void init(ComputeUnit *cu); + void exec(); + void bindWaveList(std::vector<Wavefront*> *list); + void initiateFetch(Wavefront *wavefront); + void fetch(PacketPtr pkt, Wavefront *wavefront); + void processFetchReturn(PacketPtr pkt); + static uint32_t globalFetchUnitID; + + private: + bool timingSim; + ComputeUnit *computeUnit; + TheGpuISA::Decoder decoder; + + // Fetch scheduler; Selects one wave from + // the fetch queue for instruction fetching. + // The selection is made according to + // a scheduling policy + Scheduler fetchScheduler; + + // Stores the list of waves that are + // ready to be fetched this cycle + std::vector<Wavefront*> fetchQueue; + + // Stores the fetch status of all waves dispatched to this SIMD. + // TRUE implies the wave is ready to fetch and is already + // moved to fetchQueue + std::vector<std::pair<Wavefront*, bool>> fetchStatusQueue; + + // Pointer to list of waves dispatched on to this SIMD unit + std::vector<Wavefront*> *waveList; +}; + +#endif // __FETCH_UNIT_HH__ |