power_model.cc revision 11527
111527Sdavid.guillen@arm.com/* 211527Sdavid.guillen@arm.com * Copyright (c) 2016 ARM Limited 311527Sdavid.guillen@arm.com * All rights reserved 411527Sdavid.guillen@arm.com * 511527Sdavid.guillen@arm.com * The license below extends only to copyright in the software and shall 611527Sdavid.guillen@arm.com * not be construed as granting a license to any other intellectual 711527Sdavid.guillen@arm.com * property including but not limited to intellectual property relating 811527Sdavid.guillen@arm.com * to a hardware implementation of the functionality of the software 911527Sdavid.guillen@arm.com * licensed hereunder. You may use the software subject to the license 1011527Sdavid.guillen@arm.com * terms below provided that you ensure that this notice is replicated 1111527Sdavid.guillen@arm.com * unmodified and in its entirety in all distributions of the software, 1211527Sdavid.guillen@arm.com * modified or unmodified, in source code or in binary form. 1311527Sdavid.guillen@arm.com * 1411527Sdavid.guillen@arm.com * Redistribution and use in source and binary forms, with or without 1511527Sdavid.guillen@arm.com * modification, are permitted provided that the following conditions are 1611527Sdavid.guillen@arm.com * met: redistributions of source code must retain the above copyright 1711527Sdavid.guillen@arm.com * notice, this list of conditions and the following disclaimer; 1811527Sdavid.guillen@arm.com * redistributions in binary form must reproduce the above copyright 1911527Sdavid.guillen@arm.com * notice, this list of conditions and the following disclaimer in the 2011527Sdavid.guillen@arm.com * documentation and/or other materials provided with the distribution; 2111527Sdavid.guillen@arm.com * neither the name of the copyright holders nor the names of its 2211527Sdavid.guillen@arm.com * contributors may be used to endorse or promote products derived from 2311527Sdavid.guillen@arm.com * this software without specific prior written permission. 2411527Sdavid.guillen@arm.com * 2511527Sdavid.guillen@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2611527Sdavid.guillen@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2711527Sdavid.guillen@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2811527Sdavid.guillen@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2911527Sdavid.guillen@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3011527Sdavid.guillen@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3111527Sdavid.guillen@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3211527Sdavid.guillen@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3311527Sdavid.guillen@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3411527Sdavid.guillen@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3511527Sdavid.guillen@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3611527Sdavid.guillen@arm.com * 3711527Sdavid.guillen@arm.com * Authors: David Guillen Fandos 3811527Sdavid.guillen@arm.com */ 3911527Sdavid.guillen@arm.com 4011527Sdavid.guillen@arm.com#include "sim/power/power_model.hh" 4111527Sdavid.guillen@arm.com 4211527Sdavid.guillen@arm.com#include "base/statistics.hh" 4311527Sdavid.guillen@arm.com#include "params/PowerModel.hh" 4411527Sdavid.guillen@arm.com#include "params/PowerModelState.hh" 4511527Sdavid.guillen@arm.com#include "sim/sim_object.hh" 4611527Sdavid.guillen@arm.com#include "sim/sub_system.hh" 4711527Sdavid.guillen@arm.com 4811527Sdavid.guillen@arm.comPowerModelState::PowerModelState(const Params *p) 4911527Sdavid.guillen@arm.com : SimObject(p), _temp(0), clocked_object(NULL) 5011527Sdavid.guillen@arm.com{ 5111527Sdavid.guillen@arm.com} 5211527Sdavid.guillen@arm.com 5311527Sdavid.guillen@arm.comPowerModel::PowerModel(const Params *p) 5411527Sdavid.guillen@arm.com : SimObject(p), states_pm(p->pm), subsystem(p->subsystem), 5511527Sdavid.guillen@arm.com clocked_object(NULL) 5611527Sdavid.guillen@arm.com{ 5711527Sdavid.guillen@arm.com panic_if(subsystem == NULL, 5811527Sdavid.guillen@arm.com "Subsystem is NULL! This is not acceptable for a PowerModel!\n"); 5911527Sdavid.guillen@arm.com subsystem->registerPowerProducer(this); 6011527Sdavid.guillen@arm.com} 6111527Sdavid.guillen@arm.com 6211527Sdavid.guillen@arm.comvoid 6311527Sdavid.guillen@arm.comPowerModel::setClockedObject(ClockedObject * clkobj) 6411527Sdavid.guillen@arm.com{ 6511527Sdavid.guillen@arm.com this->clocked_object = clkobj; 6611527Sdavid.guillen@arm.com 6711527Sdavid.guillen@arm.com for (auto & pms: states_pm) 6811527Sdavid.guillen@arm.com pms->setClockedObject(clkobj); 6911527Sdavid.guillen@arm.com} 7011527Sdavid.guillen@arm.com 7111527Sdavid.guillen@arm.comvoid 7211527Sdavid.guillen@arm.comPowerModel::thermalUpdateCallback(const double & temp) 7311527Sdavid.guillen@arm.com{ 7411527Sdavid.guillen@arm.com for (auto & pms: states_pm) 7511527Sdavid.guillen@arm.com pms->setTemperature(temp); 7611527Sdavid.guillen@arm.com} 7711527Sdavid.guillen@arm.com 7811527Sdavid.guillen@arm.comvoid 7911527Sdavid.guillen@arm.comPowerModel::regProbePoints() 8011527Sdavid.guillen@arm.com{ 8111527Sdavid.guillen@arm.com thermalListener.reset(new ThermalProbeListener ( 8211527Sdavid.guillen@arm.com *this, this->subsystem->getProbeManager(), "thermalUpdate" 8311527Sdavid.guillen@arm.com )); 8411527Sdavid.guillen@arm.com} 8511527Sdavid.guillen@arm.com 8611527Sdavid.guillen@arm.comPowerModel* 8711527Sdavid.guillen@arm.comPowerModelParams::create() 8811527Sdavid.guillen@arm.com{ 8911527Sdavid.guillen@arm.com return new PowerModel(this); 9011527Sdavid.guillen@arm.com} 9111527Sdavid.guillen@arm.com 9211527Sdavid.guillen@arm.comdouble 9311527Sdavid.guillen@arm.comPowerModel::getDynamicPower() const 9411527Sdavid.guillen@arm.com{ 9511527Sdavid.guillen@arm.com assert(clocked_object); 9611527Sdavid.guillen@arm.com 9711527Sdavid.guillen@arm.com std::vector<double> w = clocked_object->pwrStateWeights(); 9811527Sdavid.guillen@arm.com 9911527Sdavid.guillen@arm.com // Same number of states (excluding UNDEFINED) 10011527Sdavid.guillen@arm.com assert(w.size() - 1 == states_pm.size()); 10111527Sdavid.guillen@arm.com 10211527Sdavid.guillen@arm.com // Make sure we have no UNDEFINED state 10311527Sdavid.guillen@arm.com warn_if(w[Enums::PwrState::UNDEFINED] > 0, 10411527Sdavid.guillen@arm.com "SimObject in UNDEFINED power state! Power figures might be wrong!\n"); 10511527Sdavid.guillen@arm.com 10611527Sdavid.guillen@arm.com double power = 0; 10711527Sdavid.guillen@arm.com for (unsigned i = 0; i < states_pm.size(); i++) 10811527Sdavid.guillen@arm.com if (w[i + 1] > 0.0f) 10911527Sdavid.guillen@arm.com power += states_pm[i]->getDynamicPower() * w[i + 1]; 11011527Sdavid.guillen@arm.com 11111527Sdavid.guillen@arm.com return power; 11211527Sdavid.guillen@arm.com} 11311527Sdavid.guillen@arm.com 11411527Sdavid.guillen@arm.comdouble 11511527Sdavid.guillen@arm.comPowerModel::getStaticPower() const 11611527Sdavid.guillen@arm.com{ 11711527Sdavid.guillen@arm.com assert(clocked_object); 11811527Sdavid.guillen@arm.com 11911527Sdavid.guillen@arm.com std::vector<double> w = clocked_object->pwrStateWeights(); 12011527Sdavid.guillen@arm.com 12111527Sdavid.guillen@arm.com // Same number of states (excluding UNDEFINED) 12211527Sdavid.guillen@arm.com assert(w.size() - 1 == states_pm.size()); 12311527Sdavid.guillen@arm.com 12411527Sdavid.guillen@arm.com // Make sure we have no UNDEFINED state 12511527Sdavid.guillen@arm.com if (w[0] > 0) 12611527Sdavid.guillen@arm.com warn("SimObject in UNDEFINED power state! " 12711527Sdavid.guillen@arm.com "Power figures might be wrong!\n"); 12811527Sdavid.guillen@arm.com 12911527Sdavid.guillen@arm.com // We have N+1 states, being state #0 the default 'UNDEFINED' state 13011527Sdavid.guillen@arm.com double power = 0; 13111527Sdavid.guillen@arm.com for (unsigned i = 0; i < states_pm.size(); i++) 13211527Sdavid.guillen@arm.com // Don't evaluate power if the object hasn't been in that state 13311527Sdavid.guillen@arm.com // This fixes issues with NaNs and similar. 13411527Sdavid.guillen@arm.com if (w[i + 1] > 0.0f) 13511527Sdavid.guillen@arm.com power += states_pm[i]->getStaticPower() * w[i + 1]; 13611527Sdavid.guillen@arm.com 13711527Sdavid.guillen@arm.com return power; 13811527Sdavid.guillen@arm.com} 139