Subversion Repositories wbddr3

////////////////////////////////////////////////////////////////////////////////

//

// Filename:    pddrsim.h

//

// Project:     A wishbone controlled DDR3 SDRAM memory controller.

//

// Purpose:     To expand a DDR3 SDRAM controllers influence across multiple

//              clocks.  Hence, if the DDR3 SDRAM controller runs at half

//      the clock rate of the DDR3-SDRAM, this will expand it to the full

//      clock rate.

//

// Creator:     Dan Gisselquist, Ph.D.

//              Gisselquist Technology, LLC

//

////////////////////////////////////////////////////////////////////////////////

//

// Copyright (C) 2016, Gisselquist Technology, LLC

//

// This program is free software (firmware): you can redistribute it and/or

// modify it under the terms of  the GNU General Public License as published

// by the Free Software Foundation, either version 3 of the License, or (at

// your option) any later version.

//

// This program is distributed in the hope that it will be useful, but WITHOUT

// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with this program.  (It's in the $(ROOT)/doc directory, run make with no

// target there if the PDF file isn't present.)  If not, see

// <http://www.gnu.org/licenses/> for a copy.

//

// License:     GPL, v3, as defined and found on www.gnu.org,

//              http://www.gnu.org/licenses/gpl.html

//

//

////////////////////////////////////////////////////////////////////////////////

//

//

#ifndef PDDRSIM_H

#define PDDRSIM_H

#include "ddrsdramsim.h"

class   PDDRSIM : protected DDRSDRAMSIM {

public:

        PDDRSIM(int lglen) : DDRSDRAMSIM(lglen) {};

        unsigned long operator()(int, int, int,

                        unsigned, unsigned, unsigned long);

        unsigned long operator[](unsigned addr) {

                unsigned hdata, ldata;

                unsigned long odata;

                hdata = mem(addr<<1);

                ldata = mem((addr<<1)+1);

                odata = (((unsigned long)hdata)<<32)|((unsigned long)ldata);

                return odata; };

        void set(unsigned addr, unsigned long data) {

                unsigned hdata, ldata;

                hdata = (unsigned long)(data>>32);

                ldata = (unsigned long)(data);

                mem((addr<<1)  ) = hdata;

                mem((addr<<1)+1) = ldata;

        };

        unsigned bank_state(int bankid) {

                return (m_bank[bankid].m_state & 0x0ffff); };

};

#endif