thermal_domain.cc revision 11800 
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/thermal_domain.hh"
41
42#include <algorithm>
43
44#include "base/statistics.hh"
45#include "debug/ThermalDomain.hh"
46#include "params/ThermalDomain.hh"
47#include "sim/clocked_object.hh"
48#include "sim/linear_solver.hh"
49#include "sim/power/thermal_model.hh"
50#include "sim/probe/probe.hh"
51#include "sim/sub_system.hh"
52
53ThermalDomain::ThermalDomain(const Params *p)
54    : SimObject(p), _initTemperature(p->initial_temperature),
55    node(NULL), subsystem(NULL)
56{
57}
58
59double
60ThermalDomain::currentTemperature() const
61{
62    return node->temp;
63}
64
65void
66ThermalDomain::setSubSystem(SubSystem * ss)
67{
68    assert(!this->subsystem);
69    this->subsystem = ss;
70
71    ppThermalUpdate = new ProbePointArg<double>(subsystem->getProbeManager(),
72                                                "thermalUpdate");
73}
74
75void
76ThermalDomain::regStats()
77{
78    SimObject::regStats();
79
80    currentTemp
81        .method(this, &ThermalDomain::currentTemperature)
82        .name(params()->name + ".temp")
83        .desc("Temperature in centigrate degrees")
84        ;
85}
86
87void
88ThermalDomain::emitUpdate()
89{
90    ppThermalUpdate->notify(node->temp);
91}
92
93ThermalDomain *
94ThermalDomainParams::create()
95{
96    return new ThermalDomain(this);
97}
98
99void
100ThermalDomain::serialize(CheckpointOut &cp) const
101{
102    SERIALIZE_SCALAR(_initTemperature);
103}
104
105void
106ThermalDomain::unserialize(CheckpointIn &cp)
107{
108    UNSERIALIZE_SCALAR(_initTemperature);
109}
110
111
112LinearEquation
113ThermalDomain::getEquation(ThermalNode * tn, unsigned n, double step) const
114{
115    LinearEquation eq(n);
116    double power = subsystem->getDynamicPower() + subsystem->getStaticPower();
117    if (tn == node)
118        eq[eq.cnt()] = power;
119    return eq;
120}
121