gem5  v21.2.1.1
local_memory_pipeline.hh
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31 
32 #ifndef __LOCAL_MEMORY_PIPELINE_HH__
33 #define __LOCAL_MEMORY_PIPELINE_HH__
34 
35 #include <queue>
36 #include <string>
37 
38 #include "base/statistics.hh"
39 #include "base/stats/group.hh"
40 #include "gpu-compute/misc.hh"
41 #include "params/ComputeUnit.hh"
42 
43 /*
44  * @file local_memory_pipeline.hh
45  *
46  * The local memory pipeline issues newly created local memory packets
47  * from pipeline to the LDS. This stage also retires previously issued
48  * loads and stores that have returned from the LDS.
49  */
50 
51 namespace gem5
52 {
53 
54 class ComputeUnit;
55 class Wavefront;
56 
58 {
59  public:
60  LocalMemPipeline(const ComputeUnitParams &p, ComputeUnit &cu);
61  void exec();
62  std::queue<GPUDynInstPtr> &getLMRespFIFO() { return lmReturnedRequests; }
63 
64  void issueRequest(GPUDynInstPtr gpuDynInst);
65 
66 
67  bool
69  {
70  return lmReturnedRequests.size() < lmQueueSize;
71  }
72 
73  bool
74  isLMReqFIFOWrRdy(uint32_t pendReqs=0) const
75  {
76  return (lmIssuedRequests.size() + pendReqs) < lmQueueSize;
77  }
78 
79  const std::string& name() const { return _name; }
80 
81  void
83  {
84  stats.loadVrfBankConflictCycles += num_cycles;
85  }
86 
87  private:
89  const std::string _name;
91 
92  // Local Memory Request Fifo: all shared memory requests
93  // are issued to this FIFO from the memory pipelines
94  std::queue<GPUDynInstPtr> lmIssuedRequests;
95 
96  // Local Memory Response Fifo: all responses of shared memory
97  // requests are sent to this FIFO from LDS
98  std::queue<GPUDynInstPtr> lmReturnedRequests;
99 
100  protected:
102  {
104 
106  } stats;
107 };
108 
109 } // namespace gem5
110 
111 #endif // __LOCAL_MEMORY_PIPELINE_HH__
gem5::statistics::Scalar
This is a simple scalar statistic, like a counter.
Definition: statistics.hh:1930
gem5::LocalMemPipeline::LocalMemPipelineStats
Definition: local_memory_pipeline.hh:101
group.hh
gem5::LocalMemPipeline::LocalMemPipelineStats::loadVrfBankConflictCycles
statistics::Scalar loadVrfBankConflictCycles
Definition: local_memory_pipeline.hh:105
misc.hh
gem5::LocalMemPipeline::lmQueueSize
int lmQueueSize
Definition: local_memory_pipeline.hh:90
gem5::LocalMemPipeline::incLoadVRFBankConflictCycles
void incLoadVRFBankConflictCycles(int num_cycles)
Definition: local_memory_pipeline.hh:82
gem5::LocalMemPipeline::issueRequest
void issueRequest(GPUDynInstPtr gpuDynInst)
Definition: local_memory_pipeline.cc:127
gem5::LocalMemPipeline::getLMRespFIFO
std::queue< GPUDynInstPtr > & getLMRespFIFO()
Definition: local_memory_pipeline.hh:62
gem5::LocalMemPipeline::LocalMemPipelineStats::LocalMemPipelineStats
LocalMemPipelineStats(statistics::Group *parent)
Definition: local_memory_pipeline.cc:153
gem5::ComputeUnit
Definition: compute_unit.hh:201
gem5::LocalMemPipeline::exec
void exec()
Definition: local_memory_pipeline.cc:52
gem5::LocalMemPipeline::LocalMemPipeline
LocalMemPipeline(const ComputeUnitParams &p, ComputeUnit &cu)
Definition: local_memory_pipeline.cc:45
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
statistics.hh
gem5::LocalMemPipeline::isLMRespFIFOWrRdy
bool isLMRespFIFOWrRdy() const
Definition: local_memory_pipeline.hh:68
gem5::LocalMemPipeline::lmReturnedRequests
std::queue< GPUDynInstPtr > lmReturnedRequests
Definition: local_memory_pipeline.hh:98
gem5::LocalMemPipeline::isLMReqFIFOWrRdy
bool isLMReqFIFOWrRdy(uint32_t pendReqs=0) const
Definition: local_memory_pipeline.hh:74
gem5::GPUDynInstPtr
std::shared_ptr< GPUDynInst > GPUDynInstPtr
Definition: misc.hh:49
gem5::LocalMemPipeline::lmIssuedRequests
std::queue< GPUDynInstPtr > lmIssuedRequests
Definition: local_memory_pipeline.hh:94
gem5::LocalMemPipeline::stats
gem5::LocalMemPipeline::LocalMemPipelineStats stats
gem5::statistics::Group
Statistics container.
Definition: group.hh:93
gem5::LocalMemPipeline::computeUnit
ComputeUnit & computeUnit
Definition: local_memory_pipeline.hh:88
gem5::LocalMemPipeline
Definition: local_memory_pipeline.hh:57
gem5::LocalMemPipeline::_name
const std::string _name
Definition: local_memory_pipeline.hh:89
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: tlb.cc:60
gem5::LocalMemPipeline::name
const std::string & name() const
Definition: local_memory_pipeline.hh:79

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