src/cpu/o3/params.hh

   1 /*
   2  * Copyright (c) 2004-2006 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Kevin Lim
  29  */
  30
  31 #ifndef __CPU_O3_PARAMS_HH__
  32 #define __CPU_O3_PARAMS_HH__
  33
  34 #include "cpu/o3/cpu.hh"
  35
  36 //Forward declarations
  37 class FUPool;
  38
  39 /**
  40  * This file defines the parameters that will be used for the O3CPU.
  41  * This must be defined externally so that the Impl can have a params class
  42  * defined that it can pass to all of the individual stages.
  43  */
  44 class O3Params : public BaseO3CPU::Params
  45 {
  46   public:
  47     unsigned activity;
  48
  49     //
  50     // Pointers to key objects
  51     //
  52 #if !FULL_SYSTEM
  53     std::vector<Process *> workload;
  54     Process *process;
  55 #endif // FULL_SYSTEM
  56
  57     MemObject *mem;
  58
  59     BaseCPU *checker;
  60
  61     //
  62     // Caches
  63     //
  64     //    MemInterface *icacheInterface;
  65     //    MemInterface *dcacheInterface;
  66
  67     unsigned cachePorts;
  68
  69     //
  70     // Fetch
  71     //
  72     unsigned decodeToFetchDelay;
  73     unsigned renameToFetchDelay;
  74     unsigned iewToFetchDelay;
  75     unsigned commitToFetchDelay;
  76     unsigned fetchWidth;
  77
  78     //
  79     // Decode
  80     //
  81     unsigned renameToDecodeDelay;
  82     unsigned iewToDecodeDelay;
  83     unsigned commitToDecodeDelay;
  84     unsigned fetchToDecodeDelay;
  85     unsigned decodeWidth;
  86
  87     //
  88     // Rename
  89     //
  90     unsigned iewToRenameDelay;
  91     unsigned commitToRenameDelay;
  92     unsigned decodeToRenameDelay;
  93     unsigned renameWidth;
  94
  95     //
  96     // IEW
  97     //
  98     unsigned commitToIEWDelay;
  99     unsigned renameToIEWDelay;
 100     unsigned issueToExecuteDelay;
 101     unsigned dispatchWidth;
 102     unsigned issueWidth;
 103     unsigned wbWidth;
 104     unsigned wbDepth;
 105     FUPool *fuPool;
 106
 107     //
 108     // Commit
 109     //
 110     unsigned iewToCommitDelay;
 111     unsigned renameToROBDelay;
 112     unsigned commitWidth;
 113     unsigned squashWidth;
 114     Tick trapLatency;
 115     Tick fetchTrapLatency;
 116
 117     //
 118     // Timebuffer sizes
 119     //
 120     unsigned backComSize;
 121     unsigned forwardComSize;
 122
 123     //
 124     // Branch predictor (BP, BTB, RAS)
 125     //
 126     std::string predType;
 127     unsigned localPredictorSize;
 128     unsigned localCtrBits;
 129     unsigned localHistoryTableSize;
 130     unsigned localHistoryBits;
 131     unsigned globalPredictorSize;
 132     unsigned globalCtrBits;
 133     unsigned globalHistoryBits;
 134     unsigned choicePredictorSize;
 135     unsigned choiceCtrBits;
 136
 137     unsigned BTBEntries;
 138     unsigned BTBTagSize;
 139
 140     unsigned RASSize;
 141
 142     //
 143     // Load store queue
 144     //
 145     unsigned LQEntries;
 146     unsigned SQEntries;
 147
 148     //
 149     // Memory dependence
 150     //
 151     unsigned SSITSize;
 152     unsigned LFSTSize;
 153
 154     //
 155     // Miscellaneous
 156     //
 157     unsigned numPhysIntRegs;
 158     unsigned numPhysFloatRegs;
 159     unsigned numIQEntries;
 160     unsigned numROBEntries;
 161
 162     //SMT Parameters
 163     unsigned smtNumFetchingThreads;
 164
 165     std::string   smtFetchPolicy;
 166
 167     std::string   smtIQPolicy;
 168     unsigned smtIQThreshold;
 169
 170     std::string   smtLSQPolicy;
 171     unsigned smtLSQThreshold;
 172
 173     std::string   smtCommitPolicy;
 174
 175     std::string   smtROBPolicy;
 176     unsigned smtROBThreshold;
 177
 178     // Probably can get this from somewhere.
 179     unsigned instShiftAmt;
 180 };
 181
 182 #endif // __CPU_O3_ALPHA_PARAMS_HH__