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.params import *
  30 from m5 import build_env
  31 from BaseCPU import BaseCPU
  32
  33 if build_env['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 build_env['USE_CHECKER']:
  42         checker = Param.BaseCPU("Checker CPU")
  43     if build_env['FULL_SYSTEM']:
  44         profile = Param.Latency('0ns', "trace the kernel stack")
  45
  46     icache_port = Port("Instruction Port")
  47     dcache_port = Port("Data Port")
  48
  49     width = Param.Unsigned("Width")
  50     frontEndWidth = Param.Unsigned("Front end width")
  51     frontEndLatency = Param.Unsigned("Front end latency")
  52     backEndWidth = Param.Unsigned("Back end width")
  53     backEndSquashLatency = Param.Unsigned("Back end squash latency")
  54     backEndLatency = Param.Unsigned("Back end latency")
  55     maxInstBufferSize = Param.Unsigned("Maximum instruction buffer size")
  56     maxOutstandingMemOps = Param.Unsigned("Maximum number of outstanding memory operations")
  57     decodeToFetchDelay = Param.Unsigned("Decode to fetch delay")
  58     renameToFetchDelay = Param.Unsigned("Rename to fetch delay")
  59     iewToFetchDelay = Param.Unsigned("Issue/Execute/Writeback to fetch "
  60                "delay")
  61     commitToFetchDelay = Param.Unsigned("Commit to fetch delay")
  62     fetchWidth = Param.Unsigned("Fetch width")
  63
  64     renameToDecodeDelay = Param.Unsigned("Rename to decode delay")
  65     iewToDecodeDelay = Param.Unsigned("Issue/Execute/Writeback to decode "
  66                "delay")
  67     commitToDecodeDelay = Param.Unsigned("Commit to decode delay")
  68     fetchToDecodeDelay = Param.Unsigned("Fetch to decode delay")
  69     decodeWidth = Param.Unsigned("Decode width")
  70
  71     iewToRenameDelay = Param.Unsigned("Issue/Execute/Writeback to rename "
  72                "delay")
  73     commitToRenameDelay = Param.Unsigned("Commit to rename delay")
  74     decodeToRenameDelay = Param.Unsigned("Decode to rename delay")
  75     renameWidth = Param.Unsigned("Rename width")
  76
  77     commitToIEWDelay = Param.Unsigned("Commit to "
  78                "Issue/Execute/Writeback delay")
  79     renameToIEWDelay = Param.Unsigned("Rename to "
  80                "Issue/Execute/Writeback delay")
  81     issueToExecuteDelay = Param.Unsigned("Issue to execute delay (internal "
  82               "to the IEW stage)")
  83     issueWidth = Param.Unsigned("Issue width")
  84     executeWidth = Param.Unsigned("Execute width")
  85     executeIntWidth = Param.Unsigned("Integer execute width")
  86     executeFloatWidth = Param.Unsigned("Floating point execute width")
  87     executeBranchWidth = Param.Unsigned("Branch execute width")
  88     executeMemoryWidth = Param.Unsigned("Memory execute width")
  89
  90     iewToCommitDelay = Param.Unsigned("Issue/Execute/Writeback to commit "
  91                "delay")
  92     renameToROBDelay = Param.Unsigned("Rename to reorder buffer delay")
  93     commitWidth = Param.Unsigned("Commit width")
  94     squashWidth = Param.Unsigned("Squash width")
  95
  96     predType = Param.String("Type of branch predictor ('local', 'tournament')")
  97     localPredictorSize = Param.Unsigned("Size of local predictor")
  98     localCtrBits = Param.Unsigned("Bits per counter")
  99     localHistoryTableSize = Param.Unsigned("Size of local history table")
 100     localHistoryBits = Param.Unsigned("Bits for the local history")
 101     globalPredictorSize = Param.Unsigned("Size of global predictor")
 102     globalCtrBits = Param.Unsigned("Bits per counter")
 103     globalHistoryBits = Param.Unsigned("Bits of history")
 104     choicePredictorSize = Param.Unsigned("Size of choice predictor")
 105     choiceCtrBits = Param.Unsigned("Bits of choice counters")
 106
 107     BTBEntries = Param.Unsigned("Number of BTB entries")
 108     BTBTagSize = Param.Unsigned("Size of the BTB tags, in bits")
 109
 110     RASSize = Param.Unsigned("RAS size")
 111
 112     LQEntries = Param.Unsigned("Number of load queue entries")
 113     SQEntries = Param.Unsigned("Number of store queue entries")
 114     lsqLimits = Param.Bool(True, "LSQ size limits dispatch")
 115     LFSTSize = Param.Unsigned("Last fetched store table size")
 116     SSITSize = Param.Unsigned("Store set ID table size")
 117
 118     numPhysIntRegs = Param.Unsigned("Number of physical integer registers")
 119     numPhysFloatRegs = Param.Unsigned("Number of physical floating point "
 120                "registers")
 121     numIQEntries = Param.Unsigned("Number of instruction queue entries")
 122     numROBEntries = Param.Unsigned("Number of reorder buffer entries")
 123
 124     instShiftAmt = Param.Unsigned("Number of bits to shift instructions by")
 125
 126     function_trace = Param.Bool(False, "Enable function trace")
 127     function_trace_start = Param.Tick(0, "Cycle to start function trace")