src/sim/power/mathexpr_powermodel.cc

   1 /*
   2  * Copyright (c) 2015 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions are
  16  * met: redistributions of source code must retain the above copyright
  17  * notice, this list of conditions and the following disclaimer;
  18  * redistributions in binary form must reproduce the above copyright
  19  * notice, this list of conditions and the following disclaimer in the
  20  * documentation and/or other materials provided with the distribution;
  21  * neither the name of the copyright holders nor the names of its
  22  * contributors may be used to endorse or promote products derived from
  23  * this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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  35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  * Authors: David Guillen Fandos
  38  */
  39
  40 #include "sim/power/mathexpr_powermodel.hh"
  41
  42 #include "base/statistics.hh"
  43 #include "params/MathExprPowerModel.hh"
  44 #include "sim/mathexpr.hh"
  45 #include "sim/power/thermal_model.hh"
  46 #include "sim/sim_object.hh"
  47
  48 MathExprPowerModel::MathExprPowerModel(const Params *p)
  49     : PowerModelState(p), dyn_expr(p->dyn), st_expr(p->st)
  50 {
  51     // Calculate the name of the object we belong to
  52     std::vector<std::string> path;
  53     tokenize(path, name(), '.', true);
  54     // It's something like xyz.power_model.pm2
  55     assert(path.size() > 2);
  56     for (unsigned i = 0; i < path.size() - 2; i++)
  57         basename += path[i] + ".";
  58 }
  59
  60 void
  61 MathExprPowerModel::startup()
  62 {
  63     // Create a map with stats and pointers for quick access
  64     // Has to be done here, since we need access to the statsList
  65     for (auto & i: Stats::statsList())
  66         if (i->name.find(basename) == 0)
  67             stats_map[i->name.substr(basename.size())] = i;
  68 }
  69
  70 double
  71 MathExprPowerModel::getStatValue(const std::string &name) const
  72 {
  73     using namespace Stats;
  74
  75     // Automatic variables:
  76     if (name == "temp")
  77         return _temp;
  78
  79     // Try to cast the stat, only these are supported right now
  80     Info *info = stats_map.at(name);
  81
  82     ScalarInfo *si = dynamic_cast<ScalarInfo*>(info);
  83     if (si)
  84         return si->value();
  85     FormulaInfo *fi = dynamic_cast<FormulaInfo*>(info);
  86     if (fi)
  87         return fi->total();
  88
  89     panic("Unknown stat type!\n");
  90 }
  91
  92 void
  93 MathExprPowerModel::regStats()
  94 {
  95     PowerModelState::regStats();
  96 }
  97
  98 MathExprPowerModel*
  99 MathExprPowerModelParams::create()
 100 {
 101     return new MathExprPowerModel(this);
 102 }