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     BaseCPU *checker;
  58
  59     //
  60     // Caches
  61     //
  62     //    MemInterface *icacheInterface;
  63     //    MemInterface *dcacheInterface;
  64
  65     unsigned cachePorts;
  66
  67     //
  68     // Fetch
  69     //
  70     unsigned decodeToFetchDelay;
  71     unsigned renameToFetchDelay;
  72     unsigned iewToFetchDelay;
  73     unsigned commitToFetchDelay;
  74     unsigned fetchWidth;
  75
  76     //
  77     // Decode
  78     //
  79     unsigned renameToDecodeDelay;
  80     unsigned iewToDecodeDelay;
  81     unsigned commitToDecodeDelay;
  82     unsigned fetchToDecodeDelay;
  83     unsigned decodeWidth;
  84
  85     //
  86     // Rename
  87     //
  88     unsigned iewToRenameDelay;
  89     unsigned commitToRenameDelay;
  90     unsigned decodeToRenameDelay;
  91     unsigned renameWidth;
  92
  93     //
  94     // IEW
  95     //
  96     unsigned commitToIEWDelay;
  97     unsigned renameToIEWDelay;
  98     unsigned issueToExecuteDelay;
  99     unsigned dispatchWidth;
 100     unsigned issueWidth;
 101     unsigned wbWidth;
 102     unsigned wbDepth;
 103     FUPool *fuPool;
 104
 105     //
 106     // Commit
 107     //
 108     unsigned iewToCommitDelay;
 109     unsigned renameToROBDelay;
 110     unsigned commitWidth;
 111     unsigned squashWidth;
 112     Tick trapLatency;
 113     Tick fetchTrapLatency;
 114
 115     //
 116     // Timebuffer sizes
 117     //
 118     unsigned backComSize;
 119     unsigned forwardComSize;
 120
 121     //
 122     // Branch predictor (BP, BTB, RAS)
 123     //
 124     std::string predType;
 125     unsigned localPredictorSize;
 126     unsigned localCtrBits;
 127     unsigned localHistoryTableSize;
 128     unsigned localHistoryBits;
 129     unsigned globalPredictorSize;
 130     unsigned globalCtrBits;
 131     unsigned globalHistoryBits;
 132     unsigned choicePredictorSize;
 133     unsigned choiceCtrBits;
 134
 135     unsigned BTBEntries;
 136     unsigned BTBTagSize;
 137
 138     unsigned RASSize;
 139
 140     //
 141     // Load store queue
 142     //
 143     unsigned LQEntries;
 144     unsigned SQEntries;
 145
 146     //
 147     // Memory dependence
 148     //
 149     unsigned SSITSize;
 150     unsigned LFSTSize;
 151
 152     //
 153     // Miscellaneous
 154     //
 155     unsigned numPhysIntRegs;
 156     unsigned numPhysFloatRegs;
 157     unsigned numIQEntries;
 158     unsigned numROBEntries;
 159
 160     //SMT Parameters
 161     unsigned smtNumFetchingThreads;
 162
 163     std::string   smtFetchPolicy;
 164
 165     std::string   smtIQPolicy;
 166     unsigned smtIQThreshold;
 167
 168     std::string   smtLSQPolicy;
 169     unsigned smtLSQThreshold;
 170
 171     std::string   smtCommitPolicy;
 172
 173     std::string   smtROBPolicy;
 174     unsigned smtROBThreshold;
 175
 176     // Probably can get this from somewhere.
 177     unsigned instShiftAmt;
 178 };
 179
 180 #endif // __CPU_O3_ALPHA_PARAMS_HH__