voltage_domain.hh

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/*
 * Copyright (c) 2012 ARM Limited
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 * to a hardware implementation of the functionality of the software
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 * met: redistributions of source code must retain the above copyright
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 * Authors: Vasileios Spiliopoulos
 *          Akash Bagdia
 */

#ifndef __SIM_VOLTAGE_DOMAIN_HH__
#define __SIM_VOLTAGE_DOMAIN_HH__

#include <vector>

#include "base/statistics.hh"
#include "params/VoltageDomain.hh"
#include "sim/clock_domain.hh"
#include "sim/sim_object.hh"

class VoltageDomain : public SimObject
{
  public:

    typedef VoltageDomainParams Params;
    VoltageDomain(const Params *p);

    typedef SrcClockDomain::PerfLevel PerfLevel;

    double voltage() const { return voltageOpPoints[_perfLevel]; }

    double voltage(PerfLevel perf_level) const
    {
        chatty_assert(perf_level < numVoltages(), "VoltageDomain %s "\
                      "request for voltage perf level %u is outside "\
                      "of numVoltages %u", name(), perf_level,
                      numVoltages());
        return voltageOpPoints[perf_level];
    }

    uint32_t numVoltages() const { return (uint32_t)voltageOpPoints.size(); }

    void perfLevel(PerfLevel perf_level);

    PerfLevel perfLevel() const { return _perfLevel; }

    void registerSrcClockDom(SrcClockDomain *src_clock_dom) {
        assert(src_clock_dom->voltageDomain() == this);
        srcClockChildren.push_back(src_clock_dom);
    }

    void startup() override;

    bool sanitiseVoltages();

    void regStats() override;

    void serialize(CheckpointOut &cp) const override;
    void unserialize(CheckpointIn &cp) override;

  private:
    typedef std::vector<double> Voltages;
    const Voltages voltageOpPoints;
    PerfLevel _perfLevel;

    Stats::Value currentVoltage;

    typedef std::vector<SrcClockDomain *> SrcClockChildren;
    SrcClockChildren srcClockChildren;
};

#endif