MSRFieldControl.hpp

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/*
 * Copyright (c) 2015 - 2024 Intel Corporation
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef MSRFIELDCONTROL_HPP_INCLUDE
#define MSRFIELDCONTROL_HPP_INCLUDE
 
#include <cstdint>
#include <cmath>
 
#include <string>
#include <memory>
 
#include "Control.hpp"
 
namespace geopm
{
    class MSRIO;
 
    class MSRFieldControl : public Control
    {
        public:
            MSRFieldControl(std::shared_ptr<MSRIO> msrio,
                            int cpu,
                            uint64_t offset,
                            int begin_bit,
                            int end_bit,
                            int function,
                            double scalar);
            MSRFieldControl(const MSRFieldControl &other) = delete;
            MSRFieldControl &operator=(const MSRFieldControl &other) = delete;
            virtual ~MSRFieldControl() = default;
            void setup_batch(void) override;
            void adjust(double value) override;
            void write(double value) override;
            void save(void) override;
            void restore(void) override;
            void add_save_restore_context(int);
        private:
            uint64_t encode(double value) const;
 
            std::shared_ptr<MSRIO> m_msrio;
            int m_save_restore_ctx;
            const int m_cpu;
            const uint64_t m_offset;
            const int m_shift;
            const int m_num_bit;
            const uint64_t m_mask;
            const int m_function;
            const double m_inverse;
            bool m_is_batch_ready;
            int m_adjust_idx;
            int m_save_idx;
            int m_restore_idx;
            uint64_t m_saved_msr_value;
    };
}
 
#endif