| /* |
| * Copyright (c) 2011-2015 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. |
| * |
| * Authors: John Kalamatianos, |
| * Anthony Gutierrez |
| */ |
| |
| #ifndef __COMPUTE_UNIT_HH__ |
| #define __COMPUTE_UNIT_HH__ |
| |
| #include <deque> |
| #include <map> |
| #include <unordered_map> |
| #include <vector> |
| |
| #include "base/callback.hh" |
| #include "base/statistics.hh" |
| #include "base/types.hh" |
| #include "enums/PrefetchType.hh" |
| #include "gpu-compute/exec_stage.hh" |
| #include "gpu-compute/fetch_stage.hh" |
| #include "gpu-compute/global_memory_pipeline.hh" |
| #include "gpu-compute/local_memory_pipeline.hh" |
| #include "gpu-compute/qstruct.hh" |
| #include "gpu-compute/schedule_stage.hh" |
| #include "gpu-compute/scoreboard_check_stage.hh" |
| #include "mem/port.hh" |
| #include "sim/clocked_object.hh" |
| |
| static const int MAX_REGS_FOR_NON_VEC_MEM_INST = 1; |
| static const int MAX_WIDTH_FOR_MEM_INST = 32; |
| |
| class NDRange; |
| class Shader; |
| class VectorRegisterFile; |
| |
| struct ComputeUnitParams; |
| |
| enum EXEC_POLICY |
| { |
| OLDEST = 0, |
| RR |
| }; |
| |
| // List of execution units |
| enum EXEC_UNIT |
| { |
| SIMD0 = 0, |
| SIMD1, |
| SIMD2, |
| SIMD3, |
| GLBMEM_PIPE, |
| LDSMEM_PIPE, |
| NUM_UNITS |
| }; |
| |
| enum TLB_CACHE |
| { |
| TLB_MISS_CACHE_MISS = 0, |
| TLB_MISS_CACHE_HIT, |
| TLB_HIT_CACHE_MISS, |
| TLB_HIT_CACHE_HIT |
| }; |
| |
| class ComputeUnit : public ClockedObject |
| { |
| public: |
| FetchStage fetchStage; |
| ScoreboardCheckStage scoreboardCheckStage; |
| ScheduleStage scheduleStage; |
| ExecStage execStage; |
| GlobalMemPipeline globalMemoryPipe; |
| LocalMemPipeline localMemoryPipe; |
| |
| // Buffers used to communicate between various pipeline stages |
| |
| // List of waves which are ready to be scheduled. |
| // Each execution resource has a ready list. readyList is |
| // used to communicate between scoreboardCheck stage and |
| // schedule stage |
| // TODO: make enum to index readyList |
| 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. waveStatusList is |
| // used to communicate between scoreboardCheck stage and |
| // schedule stage |
| // TODO: convert std::pair to a class to increase readability |
| std::vector<std::vector<std::pair<Wavefront*, WAVE_STATUS>>> waveStatusList; |
| |
| // List of waves which will be dispatched to |
| // each execution resource. A FILLED implies |
| // dispatch list is non-empty and |
| // execution unit has something to execute |
| // this cycle. Currently, the dispatch list of |
| // an execution resource can hold only one wave because |
| // an execution resource can execute only one wave in a cycle. |
| // dispatchList is used to communicate between schedule |
| // and exec stage |
| // TODO: convert std::pair to a class to increase readability |
| std::vector<std::pair<Wavefront*, DISPATCH_STATUS>> dispatchList; |
| |
| int rrNextMemID; // used by RR WF exec policy to cycle through WF's |
| int rrNextALUWp; |
| typedef ComputeUnitParams Params; |
| std::vector<std::vector<Wavefront*>> wfList; |
| int cu_id; |
| |
| // array of vector register files, one per SIMD |
| std::vector<VectorRegisterFile*> vrf; |
| // Number of vector ALU units (SIMDs) in CU |
| int numSIMDs; |
| // number of pipe stages for bypassing data to next dependent single |
| // precision vector instruction inside the vector ALU pipeline |
| int spBypassPipeLength; |
| // number of pipe stages for bypassing data to next dependent double |
| // precision vector instruction inside the vector ALU pipeline |
| int dpBypassPipeLength; |
| // number of cycles per issue period |
| int issuePeriod; |
| |
| // Number of global and local memory execution resources in CU |
| int numGlbMemUnits; |
| int numLocMemUnits; |
| // tracks the last cycle a vector instruction was executed on a SIMD |
| std::vector<uint64_t> lastExecCycle; |
| |
| // true if we allow a separate TLB per lane |
| bool perLaneTLB; |
| // if 0, TLB prefetching is off. |
| int prefetchDepth; |
| // if fixed-stride prefetching, this is the stride. |
| int prefetchStride; |
| |
| std::vector<Addr> lastVaddrCU; |
| std::vector<std::vector<Addr>> lastVaddrSimd; |
| std::vector<std::vector<std::vector<Addr>>> lastVaddrWF; |
| Enums::PrefetchType prefetchType; |
| EXEC_POLICY exec_policy; |
| |
| bool xact_cas_mode; |
| bool debugSegFault; |
| bool functionalTLB; |
| bool localMemBarrier; |
| |
| /* |
| * for Counting page accesses |
| * |
| * cuExitCallback inherits from Callback. When you register a callback |
| * function as an exit callback, it will get added to an exit callback |
| * queue, such that on simulation exit, all callbacks in the callback |
| * queue will have their process() function called. |
| */ |
| bool countPages; |
| |
| Shader *shader; |
| uint32_t barrier_id; |
| // vector of Vector ALU (MACC) pipelines |
| std::vector<WaitClass> aluPipe; |
| // minimum issue period per SIMD unit (in cycles) |
| std::vector<WaitClass> wfWait; |
| |
| // Resource control for Vector Register File->Global Memory pipe buses |
| std::vector<WaitClass> vrfToGlobalMemPipeBus; |
| // Resource control for Vector Register File->Local Memory pipe buses |
| std::vector<WaitClass> vrfToLocalMemPipeBus; |
| int nextGlbMemBus; |
| int nextLocMemBus; |
| // Resource control for global memory to VRF data/address bus |
| WaitClass glbMemToVrfBus; |
| // Resource control for local memory to VRF data/address bus |
| WaitClass locMemToVrfBus; |
| |
| uint32_t vrfToCoalescerBusWidth; // VRF->Coalescer data bus width in bytes |
| uint32_t coalescerToVrfBusWidth; // Coalescer->VRF data bus width in bytes |
| uint32_t numCyclesPerStoreTransfer; // number of cycles per vector store |
| uint32_t numCyclesPerLoadTransfer; // number of cycles per vector load |
| |
| Tick req_tick_latency; |
| Tick resp_tick_latency; |
| |
| // number of vector registers being reserved for each SIMD unit |
| std::vector<int> vectorRegsReserved; |
| // number of vector registers per SIMD unit |
| uint32_t numVecRegsPerSimd; |
| // Support for scheduling VGPR status update events |
| std::vector<std::pair<uint32_t, uint32_t> > regIdxVec; |
| std::vector<uint64_t> timestampVec; |
| std::vector<uint8_t> statusVec; |
| |
| void |
| registerEvent(uint32_t simdId, |
| uint32_t regIdx, |
| uint32_t operandSize, |
| uint64_t when, |
| uint8_t newStatus) { |
| regIdxVec.push_back(std::make_pair(simdId, regIdx)); |
| timestampVec.push_back(when); |
| statusVec.push_back(newStatus); |
| if (operandSize > 4) { |
| regIdxVec.push_back(std::make_pair(simdId, |
| ((regIdx + 1) % |
| numVecRegsPerSimd))); |
| timestampVec.push_back(when); |
| statusVec.push_back(newStatus); |
| } |
| } |
| |
| void updateEvents(); |
| |
| // this hash map will keep track of page divergence |
| // per memory instruction per wavefront. The hash map |
| // is cleared in GPUDynInst::updateStats() in gpu_dyn_inst.cc. |
| std::map<Addr, int> pagesTouched; |
| |
| ComputeUnit(const Params *p); |
| ~ComputeUnit(); |
| int spBypassLength() { return spBypassPipeLength; }; |
| int dpBypassLength() { return dpBypassPipeLength; }; |
| int storeBusLength() { return numCyclesPerStoreTransfer; }; |
| int loadBusLength() { return numCyclesPerLoadTransfer; }; |
| int wfSize() const { return wavefrontSize; }; |
| |
| void resizeRegFiles(int num_cregs, int num_sregs, int num_dregs); |
| void exec(); |
| void initiateFetch(Wavefront *wavefront); |
| void fetch(PacketPtr pkt, Wavefront *wavefront); |
| void fillKernelState(Wavefront *w, NDRange *ndr); |
| |
| void startWavefront(Wavefront *w, int waveId, LdsChunk *ldsChunk, |
| NDRange *ndr); |
| |
| void StartWorkgroup(NDRange *ndr); |
| int ReadyWorkgroup(NDRange *ndr); |
| |
| bool isVecAlu(int unitId) { return unitId >= SIMD0 && unitId <= SIMD3; } |
| bool isGlbMem(int unitId) { return unitId == GLBMEM_PIPE; } |
| bool isShrMem(int unitId) { return unitId == LDSMEM_PIPE; } |
| int GlbMemUnitId() { return GLBMEM_PIPE; } |
| int ShrMemUnitId() { return LDSMEM_PIPE; } |
| int nextGlbRdBus() { return (++nextGlbMemBus) % numGlbMemUnits; } |
| int nextLocRdBus() { return (++nextLocMemBus) % numLocMemUnits; } |
| /* This function cycles through all the wavefronts in all the phases to see |
| * if all of the wavefronts which should be associated with one barrier |
| * (denoted with _barrier_id), are all at the same barrier in the program |
| * (denoted by bcnt). When the number at the barrier matches bslots, then |
| * return true. |
| */ |
| int AllAtBarrier(uint32_t _barrier_id, uint32_t bcnt, uint32_t bslots); |
| bool cedeSIMD(int simdId, int wfSlotId); |
| |
| template<typename c0, typename c1> void doSmReturn(GPUDynInstPtr gpuDynInst); |
| virtual void init(); |
| void sendRequest(GPUDynInstPtr gpuDynInst, int index, PacketPtr pkt); |
| void sendSyncRequest(GPUDynInstPtr gpuDynInst, int index, PacketPtr pkt); |
| void injectGlobalMemFence(GPUDynInstPtr gpuDynInst, |
| bool kernelLaunch=true, |
| RequestPtr req=nullptr); |
| void handleMemPacket(PacketPtr pkt, int memport_index); |
| bool processTimingPacket(PacketPtr pkt); |
| void processFetchReturn(PacketPtr pkt); |
| void updatePageDivergenceDist(Addr addr); |
| |
| MasterID masterId() { return _masterId; } |
| |
| bool isDone() const; |
| bool isSimdDone(uint32_t) const; |
| |
| protected: |
| MasterID _masterId; |
| |
| LdsState &lds; |
| |
| public: |
| Stats::Scalar vALUInsts; |
| Stats::Formula vALUInstsPerWF; |
| Stats::Scalar sALUInsts; |
| Stats::Formula sALUInstsPerWF; |
| Stats::Scalar instCyclesVALU; |
| Stats::Scalar instCyclesSALU; |
| Stats::Scalar threadCyclesVALU; |
| Stats::Formula vALUUtilization; |
| Stats::Scalar ldsNoFlatInsts; |
| Stats::Formula ldsNoFlatInstsPerWF; |
| Stats::Scalar flatVMemInsts; |
| Stats::Formula flatVMemInstsPerWF; |
| Stats::Scalar flatLDSInsts; |
| Stats::Formula flatLDSInstsPerWF; |
| Stats::Scalar vectorMemWrites; |
| Stats::Formula vectorMemWritesPerWF; |
| Stats::Scalar vectorMemReads; |
| Stats::Formula vectorMemReadsPerWF; |
| Stats::Scalar scalarMemWrites; |
| Stats::Formula scalarMemWritesPerWF; |
| Stats::Scalar scalarMemReads; |
| Stats::Formula scalarMemReadsPerWF; |
| |
| void updateInstStats(GPUDynInstPtr gpuDynInst); |
| |
| // the following stats compute the avg. TLB accesslatency per |
| // uncoalesced request (only for data) |
| Stats::Scalar tlbRequests; |
| Stats::Scalar tlbCycles; |
| Stats::Formula tlbLatency; |
| // hitsPerTLBLevel[x] are the hits in Level x TLB. x = 0 is the page table. |
| Stats::Vector hitsPerTLBLevel; |
| |
| Stats::Scalar ldsBankAccesses; |
| Stats::Distribution ldsBankConflictDist; |
| |
| // over all memory instructions executed over all wavefronts |
| // how many touched 0-4 pages, 4-8, ..., 60-64 pages |
| Stats::Distribution pageDivergenceDist; |
| Stats::Scalar dynamicGMemInstrCnt; |
| Stats::Scalar dynamicLMemInstrCnt; |
| |
| Stats::Scalar wgBlockedDueLdsAllocation; |
| // Number of instructions executed, i.e. if 64 (or 32 or 7) lanes are active |
| // when the instruction is committed, this number is still incremented by 1 |
| Stats::Scalar numInstrExecuted; |
| // Number of cycles among successive instruction executions across all |
| // wavefronts of the same CU |
| Stats::Distribution execRateDist; |
| // number of individual vector operations executed |
| Stats::Scalar numVecOpsExecuted; |
| // Total cycles that something is running on the GPU |
| Stats::Scalar totalCycles; |
| Stats::Formula vpc; // vector ops per cycle |
| Stats::Formula ipc; // vector instructions per cycle |
| Stats::Distribution controlFlowDivergenceDist; |
| Stats::Distribution activeLanesPerGMemInstrDist; |
| Stats::Distribution activeLanesPerLMemInstrDist; |
| // number of vector ALU instructions received |
| Stats::Formula numALUInstsExecuted; |
| // number of times a WG can not start due to lack of free VGPRs in SIMDs |
| Stats::Scalar numTimesWgBlockedDueVgprAlloc; |
| Stats::Scalar numCASOps; |
| Stats::Scalar numFailedCASOps; |
| Stats::Scalar completedWfs; |
| // flag per vector SIMD unit that is set when there is at least one |
| // WV that has a vector ALU instruction as the oldest in its |
| // Instruction Buffer: Defined in the Scoreboard stage, consumed |
| // by the Execute stage. |
| std::vector<bool> vectorAluInstAvail; |
| // number of available (oldest) LDS instructions that could have |
| // been issued to the LDS at a specific issue slot |
| int shrMemInstAvail; |
| // number of available Global memory instructions that could have |
| // been issued to TCP at a specific issue slot |
| int glbMemInstAvail; |
| |
| void |
| regStats(); |
| |
| LdsState & |
| getLds() const |
| { |
| return lds; |
| } |
| |
| int32_t |
| getRefCounter(const uint32_t dispatchId, const uint32_t wgId) const; |
| |
| int cacheLineSize() const { return _cacheLineSize; } |
| |
| bool |
| sendToLds(GPUDynInstPtr gpuDynInst) __attribute__((warn_unused_result)); |
| |
| typedef std::unordered_map<Addr, std::pair<int, int>> pageDataStruct; |
| pageDataStruct pageAccesses; |
| |
| class CUExitCallback : public Callback |
| { |
| private: |
| ComputeUnit *computeUnit; |
| |
| public: |
| virtual ~CUExitCallback() { } |
| |
| CUExitCallback(ComputeUnit *_cu) |
| { |
| computeUnit = _cu; |
| } |
| |
| virtual void |
| process(); |
| }; |
| |
| CUExitCallback *cuExitCallback; |
| |
| /** Data access Port **/ |
| class DataPort : public MasterPort |
| { |
| public: |
| DataPort(const std::string &_name, ComputeUnit *_cu, PortID _index) |
| : MasterPort(_name, _cu), computeUnit(_cu), |
| index(_index) { } |
| |
| bool snoopRangeSent; |
| |
| struct SenderState : public Packet::SenderState |
| { |
| GPUDynInstPtr _gpuDynInst; |
| int port_index; |
| Packet::SenderState *saved; |
| |
| SenderState(GPUDynInstPtr gpuDynInst, PortID _port_index, |
| Packet::SenderState *sender_state=nullptr) |
| : _gpuDynInst(gpuDynInst), |
| port_index(_port_index), |
| saved(sender_state) { } |
| }; |
| |
| void processMemReqEvent(PacketPtr pkt); |
| EventFunctionWrapper *createMemReqEvent(PacketPtr pkt); |
| |
| void processMemRespEvent(PacketPtr pkt); |
| EventFunctionWrapper *createMemRespEvent(PacketPtr pkt); |
| |
| std::deque<std::pair<PacketPtr, GPUDynInstPtr>> retries; |
| |
| protected: |
| ComputeUnit *computeUnit; |
| int index; |
| |
| virtual bool recvTimingResp(PacketPtr pkt); |
| virtual Tick recvAtomic(PacketPtr pkt) { return 0; } |
| virtual void recvFunctional(PacketPtr pkt) { } |
| virtual void recvRangeChange() { } |
| virtual void recvReqRetry(); |
| |
| virtual void |
| getDeviceAddressRanges(AddrRangeList &resp, bool &snoop) |
| { |
| resp.clear(); |
| snoop = true; |
| } |
| |
| }; |
| |
| // Instruction cache access port |
| class SQCPort : public MasterPort |
| { |
| public: |
| SQCPort(const std::string &_name, ComputeUnit *_cu, PortID _index) |
| : MasterPort(_name, _cu), computeUnit(_cu), |
| index(_index) { } |
| |
| bool snoopRangeSent; |
| |
| struct SenderState : public Packet::SenderState |
| { |
| Wavefront *wavefront; |
| Packet::SenderState *saved; |
| |
| SenderState(Wavefront *_wavefront, Packet::SenderState |
| *sender_state=nullptr) |
| : wavefront(_wavefront), saved(sender_state) { } |
| }; |
| |
| std::deque<std::pair<PacketPtr, Wavefront*>> retries; |
| |
| protected: |
| ComputeUnit *computeUnit; |
| int index; |
| |
| virtual bool recvTimingResp(PacketPtr pkt); |
| virtual Tick recvAtomic(PacketPtr pkt) { return 0; } |
| virtual void recvFunctional(PacketPtr pkt) { } |
| virtual void recvRangeChange() { } |
| virtual void recvReqRetry(); |
| |
| virtual void |
| getDeviceAddressRanges(AddrRangeList &resp, bool &snoop) |
| { |
| resp.clear(); |
| snoop = true; |
| } |
| }; |
| |
| /** Data TLB port **/ |
| class DTLBPort : public MasterPort |
| { |
| public: |
| DTLBPort(const std::string &_name, ComputeUnit *_cu, PortID _index) |
| : MasterPort(_name, _cu), computeUnit(_cu), |
| index(_index), stalled(false) |
| { } |
| |
| bool isStalled() { return stalled; } |
| void stallPort() { stalled = true; } |
| void unstallPort() { stalled = false; } |
| |
| /** |
| * here we queue all the translation requests that were |
| * not successfully sent. |
| */ |
| std::deque<PacketPtr> retries; |
| |
| /** SenderState is information carried along with the packet |
| * throughout the TLB hierarchy |
| */ |
| struct SenderState: public Packet::SenderState |
| { |
| // the memInst that this is associated with |
| GPUDynInstPtr _gpuDynInst; |
| |
| // the lane in the memInst this is associated with, so we send |
| // the memory request down the right port |
| int portIndex; |
| |
| // constructor used for packets involved in timing accesses |
| SenderState(GPUDynInstPtr gpuDynInst, PortID port_index) |
| : _gpuDynInst(gpuDynInst), portIndex(port_index) { } |
| |
| }; |
| |
| protected: |
| ComputeUnit *computeUnit; |
| int index; |
| bool stalled; |
| |
| virtual bool recvTimingResp(PacketPtr pkt); |
| virtual Tick recvAtomic(PacketPtr pkt) { return 0; } |
| virtual void recvFunctional(PacketPtr pkt) { } |
| virtual void recvRangeChange() { } |
| virtual void recvReqRetry(); |
| }; |
| |
| class ITLBPort : public MasterPort |
| { |
| public: |
| ITLBPort(const std::string &_name, ComputeUnit *_cu) |
| : MasterPort(_name, _cu), computeUnit(_cu), stalled(false) { } |
| |
| |
| bool isStalled() { return stalled; } |
| void stallPort() { stalled = true; } |
| void unstallPort() { stalled = false; } |
| |
| /** |
| * here we queue all the translation requests that were |
| * not successfully sent. |
| */ |
| std::deque<PacketPtr> retries; |
| |
| /** SenderState is information carried along with the packet |
| * throughout the TLB hierarchy |
| */ |
| struct SenderState: public Packet::SenderState |
| { |
| // The wavefront associated with this request |
| Wavefront *wavefront; |
| |
| SenderState(Wavefront *_wavefront) : wavefront(_wavefront) { } |
| }; |
| |
| protected: |
| ComputeUnit *computeUnit; |
| bool stalled; |
| |
| virtual bool recvTimingResp(PacketPtr pkt); |
| virtual Tick recvAtomic(PacketPtr pkt) { return 0; } |
| virtual void recvFunctional(PacketPtr pkt) { } |
| virtual void recvRangeChange() { } |
| virtual void recvReqRetry(); |
| }; |
| |
| /** |
| * the port intended to communicate between the CU and its LDS |
| */ |
| class LDSPort : public MasterPort |
| { |
| public: |
| LDSPort(const std::string &_name, ComputeUnit *_cu, PortID _id) |
| : MasterPort(_name, _cu, _id), computeUnit(_cu) |
| { |
| } |
| |
| bool isStalled() const { return stalled; } |
| void stallPort() { stalled = true; } |
| void unstallPort() { stalled = false; } |
| |
| /** |
| * here we queue all the requests that were |
| * not successfully sent. |
| */ |
| std::queue<PacketPtr> retries; |
| |
| /** |
| * SenderState is information carried along with the packet, esp. the |
| * GPUDynInstPtr |
| */ |
| class SenderState: public Packet::SenderState |
| { |
| protected: |
| // The actual read/write/atomic request that goes with this command |
| GPUDynInstPtr _gpuDynInst = nullptr; |
| |
| public: |
| SenderState(GPUDynInstPtr gpuDynInst): |
| _gpuDynInst(gpuDynInst) |
| { |
| } |
| |
| GPUDynInstPtr |
| getMemInst() const |
| { |
| return _gpuDynInst; |
| } |
| }; |
| |
| virtual bool |
| sendTimingReq(PacketPtr pkt); |
| |
| protected: |
| |
| bool stalled = false; ///< whether or not it is stalled |
| |
| ComputeUnit *computeUnit; |
| |
| virtual bool |
| recvTimingResp(PacketPtr pkt); |
| |
| virtual Tick |
| recvAtomic(PacketPtr pkt) { return 0; } |
| |
| virtual void |
| recvFunctional(PacketPtr pkt) |
| { |
| } |
| |
| virtual void |
| recvRangeChange() |
| { |
| } |
| |
| virtual void |
| recvReqRetry(); |
| }; |
| |
| /** The port to access the Local Data Store |
| * Can be connected to a LDS object |
| */ |
| LDSPort *ldsPort = nullptr; |
| |
| LDSPort * |
| getLdsPort() const |
| { |
| return ldsPort; |
| } |
| |
| /** The memory port for SIMD data accesses. |
| * Can be connected to PhysMem for Ruby for timing simulations |
| */ |
| std::vector<DataPort*> memPort; |
| // port to the TLB hierarchy (i.e., the L1 TLB) |
| std::vector<DTLBPort*> tlbPort; |
| // port to the SQC (i.e. the I-cache) |
| SQCPort *sqcPort; |
| // port to the SQC TLB (there's a separate TLB for each I-cache) |
| ITLBPort *sqcTLBPort; |
| |
| Port & |
| getPort(const std::string &if_name, PortID idx) override |
| { |
| if (if_name == "memory_port") { |
| memPort[idx] = new DataPort(csprintf("%s-port%d", name(), idx), |
| this, idx); |
| return *memPort[idx]; |
| } else if (if_name == "translation_port") { |
| tlbPort[idx] = new DTLBPort(csprintf("%s-port%d", name(), idx), |
| this, idx); |
| return *tlbPort[idx]; |
| } else if (if_name == "sqc_port") { |
| sqcPort = new SQCPort(csprintf("%s-port%d", name(), idx), |
| this, idx); |
| return *sqcPort; |
| } else if (if_name == "sqc_tlb_port") { |
| sqcTLBPort = new ITLBPort(csprintf("%s-port", name()), this); |
| return *sqcTLBPort; |
| } else if (if_name == "ldsPort") { |
| if (ldsPort) { |
| fatal("an LDS port was already allocated"); |
| } |
| ldsPort = new LDSPort(csprintf("%s-port", name()), this, idx); |
| return *ldsPort; |
| } else { |
| panic("incorrect port name"); |
| } |
| } |
| |
| // xact_cas_load() |
| class waveIdentifier |
| { |
| public: |
| waveIdentifier() { } |
| waveIdentifier(int _simdId, int _wfSlotId) |
| : simdId(_simdId), wfSlotId(_wfSlotId) { } |
| |
| int simdId; |
| int wfSlotId; |
| }; |
| |
| class waveQueue |
| { |
| public: |
| std::list<waveIdentifier> waveIDQueue; |
| }; |
| std::map<unsigned, waveQueue> xactCasLoadMap; |
| |
| uint64_t getAndIncSeqNum() { return globalSeqNum++; } |
| |
| private: |
| const int _cacheLineSize; |
| uint64_t globalSeqNum; |
| int wavefrontSize; |
| GPUStaticInst *kernelLaunchInst; |
| }; |
| |
| #endif // __COMPUTE_UNIT_HH__ |
