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Diffstat (limited to 'src/sim/power/power_model.hh')
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diff --git a/src/sim/power/power_model.hh b/src/sim/power/power_model.hh new file mode 100644 index 000000000..a2ddcea18 --- /dev/null +++ b/src/sim/power/power_model.hh @@ -0,0 +1,188 @@ +/* + * 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 + */ + +#ifndef __SIM_POWER_POWER_MODEL_HH__ +#define __SIM_POWER_POWER_MODEL_HH__ + +#include "base/statistics.hh" +#include "params/PowerModel.hh" +#include "params/PowerModelState.hh" +#include "sim/power/thermal_model.hh" +#include "sim/probe/probe.hh" +#include "sim/sim_object.hh" + +/** + * A PowerModelState is an abstract class used as interface to get power + * figures out of SimObjects + */ +class PowerModelState : public SimObject +{ + public: + + typedef PowerModelStateParams Params; + PowerModelState(const Params *p); + + /** + * Get the dynamic power consumption. + * + * @return Power (Watts) consumed by this object (dynamic component) + */ + virtual double getDynamicPower() const = 0; + + /** + * Get the static power consumption. + * + * @return Power (Watts) consumed by this object (static component) + */ + virtual double getStaticPower() const = 0; + + /** + * Temperature update. + * + * @param temp Current temperature of the HW part (Celsius) + */ + virtual void setTemperature(double temp) { _temp = temp; } + + void setClockedObject(ClockedObject * clkobj) { + clocked_object = clkobj; + } + + void regStats() { + dynamicPower + .method(this, &PowerModelState::getDynamicPower) + .name(params()->name + ".dynamic_power") + .desc("Dynamic power for this object (Watts)") + ; + + staticPower + .method(this, &PowerModelState::getStaticPower) + .name(params()->name + ".static_power") + .desc("Static power for this object (Watts)") + ; + } + + protected: + Stats::Value dynamicPower, staticPower; + + /** Current temperature */ + double _temp; + + /** The clocked object we belong to */ + ClockedObject * clocked_object; +}; + +/** + * A PowerModel is a class containing a power model for a SimObject. + * The PM describes the power consumption for every power state. + */ +class PowerModel : public SimObject +{ + public: + + typedef PowerModelParams Params; + PowerModel(const Params *p); + + /** + * Get the dynamic power consumption. + * + * @return Power (Watts) consumed by this object (dynamic component) + */ + double getDynamicPower() const; + + /** + * Get the static power consumption. + * + * @return Power (Watts) consumed by this object (static component) + */ + double getStaticPower() const; + + void regStats() { + dynamicPower + .method(this, &PowerModel::getDynamicPower) + .name(params()->name + ".dynamic_power") + .desc("Dynamic power for this power state") + ; + + staticPower + .method(this, &PowerModel::getStaticPower) + .name(params()->name + ".static_power") + .desc("Static power for this power state") + ; + } + + void setClockedObject(ClockedObject *clkobj); + + virtual void regProbePoints(); + + void thermalUpdateCallback(const double & temp); + + protected: + /** Listener class to catch thermal events */ + class ThermalProbeListener : public ProbeListenerArgBase<double> + { + public: + ThermalProbeListener(PowerModel &_pm, ProbeManager *pm, + const std::string &name) + : ProbeListenerArgBase(pm, name), pm(_pm) {} + + void notify(const double &temp) + { + pm.thermalUpdateCallback(temp); + } + + protected: + PowerModel ± + }; + + Stats::Value dynamicPower, staticPower; + + /** Actual power models (one per power state) */ + std::vector<PowerModelState*> states_pm; + + /** Listener to catch temperature changes in the SubSystem */ + std::unique_ptr<ThermalProbeListener> thermalListener; + + /** The subsystem this power model belongs to */ + SubSystem * subsystem; + + /** The clocked object we belong to */ + ClockedObject * clocked_object; +}; + +#endif |