xref: /gem5/src/sim/power/thermal_domain.cc

/*
 * Copyright (c) 2015 ARM Limited
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 *
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 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
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 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 *
 * Authors: David Guillen Fandos
 */

#include "sim/power/thermal_domain.hh"

#include <algorithm>

#include "base/statistics.hh"
#include "debug/ThermalDomain.hh"
#include "params/ThermalDomain.hh"
#include "sim/clocked_object.hh"
#include "sim/linear_solver.hh"
#include "sim/power/thermal_model.hh"
#include "sim/probe/probe.hh"
#include "sim/sub_system.hh"

ThermalDomain::ThermalDomain(const Params *p)
    : SimObject(p), _initTemperature(p->initial_temperature),
    node(NULL), subsystem(NULL)
{
}

double
ThermalDomain::currentTemperature() const
{
    return node->temp;
}

void
ThermalDomain::setSubSystem(SubSystem * ss)
{
    assert(!this->subsystem);
    this->subsystem = ss;

    ppThermalUpdate = new ProbePointArg<double>(subsystem->getProbeManager(),
                                                "thermalUpdate");
}

void
ThermalDomain::regStats()
{
    SimObject::regStats();

    currentTemp
        .method(this, &ThermalDomain::currentTemperature)
        .name(params()->name + ".temp")
        .desc("Temperature in centigrate degrees")
        ;
}

void
ThermalDomain::emitUpdate()
{
    ppThermalUpdate->notify(node->temp);
}

ThermalDomain *
ThermalDomainParams::create()
{
    return new ThermalDomain(this);
}

void
ThermalDomain::serialize(CheckpointOut &cp) const
{
    SERIALIZE_SCALAR(_initTemperature);
}

void
ThermalDomain::unserialize(CheckpointIn &cp)
{
    UNSERIALIZE_SCALAR(_initTemperature);
}


LinearEquation
ThermalDomain::getEquation(ThermalNode * tn, unsigned n, double step) const
{
    LinearEquation eq(n);
    double power = subsystem->getDynamicPower() + subsystem->getStaticPower();
    if (tn == node)
        eq[eq.cnt()] = power;
    return eq;
}