AddressMapping.h

/*********************************************************************************
 *  Copyright (c) 2010-2011, Elliott Cooper-Balis
 *                             Paul Rosenfeld
 *                             Bruce Jacob
 *                             University of Maryland
 *                             dramninjas [at] gmail [dot] com
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
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 *        this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above copyright
 *notice,
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 *documentation
 *        and/or other materials provided with the distribution.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *AND
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#ifndef ADDRESS_MAPPING_H
#define ADDRESS_MAPPING_H

#include <cstdint>

#include "SystemConfiguration.h"

namespace DRAMSim
{
class AddrMapping
{
  public:
    AddrMapping();
    void addressMapping(uint64_t physicalAddress, unsigned& channel, unsigned& rank, unsigned& bank,
                        unsigned& row, unsigned& col);

    uint64_t inline diffBitWidth(uint64_t* physicalAddress, uint64_t BitWidth)
    {
        uint64_t tempA = *physicalAddress;
        *physicalAddress = *physicalAddress >> BitWidth;
        uint64_t tempB = *physicalAddress << BitWidth;
        return tempA ^ tempB;
    }

    unsigned bankgroupId(int bank);
    static unsigned findsubarray(unsigned row);
    bool isSameBankgroup(int bank0, int bank1);
    bool isSameSubarray(int row, int sub);
  private:
    uint64_t transactionSize;
    uint64_t transactionMask;
    uint64_t channelBitWidth;
    uint64_t rankBitWidth;
    uint64_t bankBitWidth;
    uint64_t subarrayBitWidth;
    uint64_t bankgroupBitWidth;
    uint64_t rowBitWidth;
    uint64_t colBitWidth;
    uint64_t byteOffsetWidth;
    uint64_t colLowBitWidth;
    uint64_t colHighBitWidth;

    unsigned num_chans_;
    int num_bank_per_bg_;
    AddressMappingScheme addressMappingScheme;
};
}  // namespace DRAMSim

#endif