thermal_domain.cc revision 11429 
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/power/thermal_model.hh"
48#include "sim/sim_object.hh"
49
50ThermalDomain::ThermalDomain(const Params *p)
51    : SimObject(p), _initTemperature(p->initial_temperature),
52    node(NULL), subsystem(NULL)
53{
54}
55
56double
57ThermalDomain::currentTemperature() const
58{
59    return node->temp;
60}
61
62void
63ThermalDomain::setSubSystem(SubSystem * ss)
64{
65    assert(!this->subsystem);
66    this->subsystem = ss;
67
68    ppThermalUpdate = new ProbePointArg<double>(subsystem->getProbeManager(),
69                                                "thermalUpdate");
70}
71
72void
73ThermalDomain::regStats()
74{
75    currentTemp
76        .method(this, &ThermalDomain::currentTemperature)
77        .name(params()->name + ".temp")
78        .desc("Temperature in centigrate degrees")
79        ;
80}
81
82void
83ThermalDomain::emitUpdate()
84{
85    ppThermalUpdate->notify(node->temp);
86}
87
88ThermalDomain *
89ThermalDomainParams::create()
90{
91    return new ThermalDomain(this);
92}
93
94void
95ThermalDomain::serialize(CheckpointOut &cp) const
96{
97    SERIALIZE_SCALAR(_initTemperature);
98}
99
100void
101ThermalDomain::unserialize(CheckpointIn &cp)
102{
103    UNSERIALIZE_SCALAR(_initTemperature);
104}
105
106
107LinearEquation
108ThermalDomain::getEquation(ThermalNode * tn, unsigned n, double step) const
109{
110    LinearEquation eq(n);
111    if (tn == node)
112        eq[eq.cnt()] = 1.75f; // Fake 1.75 Watts for now, to be changed to PM
113    return eq;
114}
115