src/python/m5/objects/O3CPU.py

   1 from m5.params import *
   2 from m5.proxy import *
   3 from m5 import build_env
   4 from BaseCPU import BaseCPU
   5 from Checker import O3Checker
   6
   7 class DerivO3CPU(BaseCPU):
   8     type = 'DerivO3CPU'
   9     activity = Param.Unsigned(0, "Initial count")
  10     numThreads = Param.Unsigned(1, "number of HW thread contexts")
  11
  12     if build_env['USE_CHECKER']:
  13         if not build_env['FULL_SYSTEM']:
  14             checker = Param.BaseCPU(O3Checker(workload=Parent.workload,
  15                                               exitOnError=True,
  16                                               warnOnlyOnLoadError=False),
  17                                     "checker")
  18         else:
  19             checker = Param.BaseCPU(O3Checker(exitOnError=True, warnOnlyOnLoadError=False), "checker")
  20             checker.itb = Parent.itb
  21             checker.dtb = Parent.dtb
  22
  23     cachePorts = Param.Unsigned("Cache Ports")
  24     icache_port = Port("Instruction Port")
  25     dcache_port = Port("Data Port")
  26     _mem_ports = ['icache_port', 'dcache_port']
  27
  28     decodeToFetchDelay = Param.Unsigned(1, "Decode to fetch delay")
  29     renameToFetchDelay = Param.Unsigned(1 ,"Rename to fetch delay")
  30     iewToFetchDelay = Param.Unsigned(1, "Issue/Execute/Writeback to fetch "
  31                                      "delay")
  32     commitToFetchDelay = Param.Unsigned(1, "Commit to fetch delay")
  33     fetchWidth = Param.Unsigned(8, "Fetch width")
  34
  35     renameToDecodeDelay = Param.Unsigned(1, "Rename to decode delay")
  36     iewToDecodeDelay = Param.Unsigned(1, "Issue/Execute/Writeback to decode "
  37                "delay")
  38     commitToDecodeDelay = Param.Unsigned(1, "Commit to decode delay")
  39     fetchToDecodeDelay = Param.Unsigned(1, "Fetch to decode delay")
  40     decodeWidth = Param.Unsigned(8, "Decode width")
  41
  42     iewToRenameDelay = Param.Unsigned(1, "Issue/Execute/Writeback to rename "
  43                "delay")
  44     commitToRenameDelay = Param.Unsigned(1, "Commit to rename delay")
  45     decodeToRenameDelay = Param.Unsigned(1, "Decode to rename delay")
  46     renameWidth = Param.Unsigned(8, "Rename width")
  47
  48     commitToIEWDelay = Param.Unsigned(1, "Commit to "
  49                "Issue/Execute/Writeback delay")
  50     renameToIEWDelay = Param.Unsigned(2, "Rename to "
  51                "Issue/Execute/Writeback delay")
  52     issueToExecuteDelay = Param.Unsigned(1, "Issue to execute delay (internal "
  53               "to the IEW stage)")
  54     dispatchWidth = Param.Unsigned(8, "Dispatch width")
  55     issueWidth = Param.Unsigned(8, "Issue width")
  56     wbWidth = Param.Unsigned(8, "Writeback width")
  57     wbDepth = Param.Unsigned(1, "Writeback depth")
  58     fuPool = Param.FUPool("Functional Unit pool")
  59
  60     iewToCommitDelay = Param.Unsigned(1, "Issue/Execute/Writeback to commit "
  61                "delay")
  62     renameToROBDelay = Param.Unsigned(1, "Rename to reorder buffer delay")
  63     commitWidth = Param.Unsigned(8, "Commit width")
  64     squashWidth = Param.Unsigned(8, "Squash width")
  65     trapLatency = Param.Tick(13, "Trap latency")
  66     fetchTrapLatency = Param.Tick(1, "Fetch trap latency")
  67
  68     backComSize = Param.Unsigned(5, "Time buffer size for backwards communication")
  69     forwardComSize = Param.Unsigned(5, "Time buffer size for forward communication")
  70
  71     predType = Param.String("tournament", "Branch predictor type ('local', 'tournament')")
  72     localPredictorSize = Param.Unsigned(2048, "Size of local predictor")
  73     localCtrBits = Param.Unsigned(2, "Bits per counter")
  74     localHistoryTableSize = Param.Unsigned(2048, "Size of local history table")
  75     localHistoryBits = Param.Unsigned(11, "Bits for the local history")
  76     globalPredictorSize = Param.Unsigned(8192, "Size of global predictor")
  77     globalCtrBits = Param.Unsigned(2, "Bits per counter")
  78     globalHistoryBits = Param.Unsigned(4096, "Bits of history")
  79     choicePredictorSize = Param.Unsigned(8192, "Size of choice predictor")
  80     choiceCtrBits = Param.Unsigned(2, "Bits of choice counters")
  81
  82     BTBEntries = Param.Unsigned(4096, "Number of BTB entries")
  83     BTBTagSize = Param.Unsigned(16, "Size of the BTB tags, in bits")
  84
  85     RASSize = Param.Unsigned(16, "RAS size")
  86
  87     LQEntries = Param.Unsigned(32, "Number of load queue entries")
  88     SQEntries = Param.Unsigned(32, "Number of store queue entries")
  89     LFSTSize = Param.Unsigned(1024, "Last fetched store table size")
  90     SSITSize = Param.Unsigned(1024, "Store set ID table size")
  91
  92     numRobs = Param.Unsigned(1, "Number of Reorder Buffers");
  93
  94     numPhysIntRegs = Param.Unsigned(256, "Number of physical integer registers")
  95     numPhysFloatRegs = Param.Unsigned(256, "Number of physical floating point "
  96                                       "registers")
  97     numIQEntries = Param.Unsigned(64, "Number of instruction queue entries")
  98     numROBEntries = Param.Unsigned(192, "Number of reorder buffer entries")
  99
 100     instShiftAmt = Param.Unsigned(2, "Number of bits to shift instructions by")
 101
 102     function_trace = Param.Bool(False, "Enable function trace")
 103     function_trace_start = Param.Tick(0, "Cycle to start function trace")
 104
 105     smtNumFetchingThreads = Param.Unsigned("SMT Number of Fetching Threads")
 106     smtFetchPolicy = Param.String("SMT Fetch policy")
 107     smtLSQPolicy    = Param.String("SMT LSQ Sharing Policy")
 108     smtLSQThreshold = Param.String("SMT LSQ Threshold Sharing Parameter")
 109     smtIQPolicy    = Param.String("SMT IQ Sharing Policy")
 110     smtIQThreshold = Param.String("SMT IQ Threshold Sharing Parameter")
 111     smtROBPolicy   = Param.String("SMT ROB Sharing Policy")
 112     smtROBThreshold = Param.String("SMT ROB Threshold Sharing Parameter")
 113     smtCommitPolicy = Param.String("SMT Commit Policy")