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/*
* Copyright (c) 2016 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* 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.
*
* Redistribution and use in source and binary forms, with or without
* 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
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* 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,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: David Guillen Fandos
*/
#include "sim/power/power_model.hh"
#include "base/statistics.hh"
#include "params/PowerModel.hh"
#include "params/PowerModelState.hh"
#include "sim/clocked_object.hh"
#include "sim/sub_system.hh"
PowerModelState::PowerModelState(const Params *p)
: SimObject(p), _temp(0), clocked_object(NULL)
{
}
PowerModel::PowerModel(const Params *p)
: SimObject(p), states_pm(p->pm), subsystem(p->subsystem),
clocked_object(NULL)
{
panic_if(subsystem == NULL,
"Subsystem is NULL! This is not acceptable for a PowerModel!\n");
subsystem->registerPowerProducer(this);
}
void
PowerModel::setClockedObject(ClockedObject * clkobj)
{
this->clocked_object = clkobj;
for (auto & pms: states_pm)
pms->setClockedObject(clkobj);
}
void
PowerModel::thermalUpdateCallback(const double & temp)
{
for (auto & pms: states_pm)
pms->setTemperature(temp);
}
void
PowerModel::regProbePoints()
{
thermalListener.reset(new ThermalProbeListener (
*this, this->subsystem->getProbeManager(), "thermalUpdate"
));
}
PowerModel*
PowerModelParams::create()
{
return new PowerModel(this);
}
double
PowerModel::getDynamicPower() const
{
assert(clocked_object);
std::vector<double> w = clocked_object->pwrStateWeights();
// Same number of states (excluding UNDEFINED)
assert(w.size() - 1 == states_pm.size());
// Make sure we have no UNDEFINED state
warn_if(w[Enums::PwrState::UNDEFINED] > 0,
"SimObject in UNDEFINED power state! Power figures might be wrong!\n");
double power = 0;
for (unsigned i = 0; i < states_pm.size(); i++)
if (w[i + 1] > 0.0f)
power += states_pm[i]->getDynamicPower() * w[i + 1];
return power;
}
double
PowerModel::getStaticPower() const
{
assert(clocked_object);
std::vector<double> w = clocked_object->pwrStateWeights();
// Same number of states (excluding UNDEFINED)
assert(w.size() - 1 == states_pm.size());
// Make sure we have no UNDEFINED state
if (w[0] > 0)
warn("SimObject in UNDEFINED power state! "
"Power figures might be wrong!\n");
// We have N+1 states, being state #0 the default 'UNDEFINED' state
double power = 0;
for (unsigned i = 0; i < states_pm.size(); i++)
// Don't evaluate power if the object hasn't been in that state
// This fixes issues with NaNs and similar.
if (w[i + 1] > 0.0f)
power += states_pm[i]->getStaticPower() * w[i + 1];
return power;
}
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