mathexpr_powermodel.cc revision 11424:e07fd01651f3 
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
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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
48MathExprPowerModel::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
60void
61MathExprPowerModel::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
70double
71MathExprPowerModel::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
92void
93MathExprPowerModel::regStats()
94{
95    PowerModelState::regStats();
96}
97
98MathExprPowerModel*
99MathExprPowerModelParams::create()
100{
101    return new MathExprPowerModel(this);
102}
103