src/cpu/ozone/OzoneCPU.py

   1 # Copyright (c) 2006-2007 The Regents of The University of Michigan
   2 # All rights reserved.
   3 #
   4 # Redistribution and use in source and binary forms, with or without
   5 # modification, are permitted provided that the following conditions are
   6 # met: redistributions of source code must retain the above copyright
   7 # notice, this list of conditions and the following disclaimer;
   8 # redistributions in binary form must reproduce the above copyright
   9 # notice, this list of conditions and the following disclaimer in the
  10 # documentation and/or other materials provided with the distribution;
  11 # neither the name of the copyright holders nor the names of its
  12 # contributors may be used to endorse or promote products derived from
  13 # this software without specific prior written permission.
  14 #
  15 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  17 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  18 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  19 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  20 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  21 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26 #
  27 # Authors: Kevin Lim
  28
  29 from m5.defines import buildEnv
  30 from m5.params import *
  31 from BaseCPU import BaseCPU
  32
  33 if buildEnv['USE_CHECKER']:
  34     from OzoneChecker import OzoneChecker
  35
  36 class DerivOzoneCPU(BaseCPU):
  37     type = 'DerivOzoneCPU'
  38
  39     numThreads = Param.Unsigned("number of HW thread contexts")
  40
  41     if buildEnv['USE_CHECKER']:
  42         checker = Param.BaseCPU("Checker CPU")
  43
  44     icache_port = Port("Instruction Port")
  45     dcache_port = Port("Data Port")
  46
  47     width = Param.Unsigned("Width")
  48     frontEndWidth = Param.Unsigned("Front end width")
  49     frontEndLatency = Param.Unsigned("Front end latency")
  50     backEndWidth = Param.Unsigned("Back end width")
  51     backEndSquashLatency = Param.Unsigned("Back end squash latency")
  52     backEndLatency = Param.Unsigned("Back end latency")
  53     maxInstBufferSize = Param.Unsigned("Maximum instruction buffer size")
  54     maxOutstandingMemOps = Param.Unsigned("Maximum number of outstanding memory operations")
  55     decodeToFetchDelay = Param.Unsigned("Decode to fetch delay")
  56     renameToFetchDelay = Param.Unsigned("Rename to fetch delay")
  57     iewToFetchDelay = Param.Unsigned("Issue/Execute/Writeback to fetch "
  58                "delay")
  59     commitToFetchDelay = Param.Unsigned("Commit to fetch delay")
  60     fetchWidth = Param.Unsigned("Fetch width")
  61
  62     renameToDecodeDelay = Param.Unsigned("Rename to decode delay")
  63     iewToDecodeDelay = Param.Unsigned("Issue/Execute/Writeback to decode "
  64                "delay")
  65     commitToDecodeDelay = Param.Unsigned("Commit to decode delay")
  66     fetchToDecodeDelay = Param.Unsigned("Fetch to decode delay")
  67     decodeWidth = Param.Unsigned("Decode width")
  68
  69     iewToRenameDelay = Param.Unsigned("Issue/Execute/Writeback to rename "
  70                "delay")
  71     commitToRenameDelay = Param.Unsigned("Commit to rename delay")
  72     decodeToRenameDelay = Param.Unsigned("Decode to rename delay")
  73     renameWidth = Param.Unsigned("Rename width")
  74
  75     commitToIEWDelay = Param.Unsigned("Commit to "
  76                "Issue/Execute/Writeback delay")
  77     renameToIEWDelay = Param.Unsigned("Rename to "
  78                "Issue/Execute/Writeback delay")
  79     issueToExecuteDelay = Param.Unsigned("Issue to execute delay (internal "
  80               "to the IEW stage)")
  81     issueWidth = Param.Unsigned("Issue width")
  82     executeWidth = Param.Unsigned("Execute width")
  83     executeIntWidth = Param.Unsigned("Integer execute width")
  84     executeFloatWidth = Param.Unsigned("Floating point execute width")
  85     executeBranchWidth = Param.Unsigned("Branch execute width")
  86     executeMemoryWidth = Param.Unsigned("Memory execute width")
  87
  88     iewToCommitDelay = Param.Unsigned("Issue/Execute/Writeback to commit "
  89                "delay")
  90     renameToROBDelay = Param.Unsigned("Rename to reorder buffer delay")
  91     commitWidth = Param.Unsigned("Commit width")
  92     squashWidth = Param.Unsigned("Squash width")
  93
  94     predType = Param.String("Type of branch predictor ('local', 'tournament')")
  95     localPredictorSize = Param.Unsigned("Size of local predictor")
  96     localCtrBits = Param.Unsigned("Bits per counter")
  97     localHistoryTableSize = Param.Unsigned("Size of local history table")
  98     localHistoryBits = Param.Unsigned("Bits for the local history")
  99     globalPredictorSize = Param.Unsigned("Size of global predictor")
 100     globalCtrBits = Param.Unsigned("Bits per counter")
 101     globalHistoryBits = Param.Unsigned("Bits of history")
 102     choicePredictorSize = Param.Unsigned("Size of choice predictor")
 103     choiceCtrBits = Param.Unsigned("Bits of choice counters")
 104
 105     BTBEntries = Param.Unsigned("Number of BTB entries")
 106     BTBTagSize = Param.Unsigned("Size of the BTB tags, in bits")
 107
 108     RASSize = Param.Unsigned("RAS size")
 109
 110     LQEntries = Param.Unsigned("Number of load queue entries")
 111     SQEntries = Param.Unsigned("Number of store queue entries")
 112     lsqLimits = Param.Bool(True, "LSQ size limits dispatch")
 113     LFSTSize = Param.Unsigned("Last fetched store table size")
 114     SSITSize = Param.Unsigned("Store set ID table size")
 115
 116     numPhysIntRegs = Param.Unsigned("Number of physical integer registers")
 117     numPhysFloatRegs = Param.Unsigned("Number of physical floating point "
 118                "registers")
 119     numIQEntries = Param.Unsigned("Number of instruction queue entries")
 120     numROBEntries = Param.Unsigned("Number of reorder buffer entries")
 121
 122     instShiftAmt = Param.Unsigned("Number of bits to shift instructions by")
 123
 124     function_trace = Param.Bool(False, "Enable function trace")
 125     function_trace_start = Param.Tick(0, "Cycle to start function trace")