Subversion Repositories sdhc-sc-core

// SDHC-SC-Core

// Secure Digital High Capacity Self Configuring Core

//

// (C) Copyright 2010, Rainer Kastl

// All rights reserved.

//

// 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  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  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.

//

// File        : SdBusTrans.sv

// Owner       : Rainer Kastl

// Description : Transmission classes for the SD Bus

// Links       :

//

`ifndef SDBUSTRANS_SV

`define SDBUSTRANS_SV

`include "SdDataBlock.sv"

const logic cSdStartbit = 0;

const logic cSdEndbit = 1;

typedef logic SdBusTransData[$];

class SdBusTrans;

        SdDataBlock DataBlocks[];

        bit SendBusy = 0;

        virtual function SdBusTransData packToData();

                return {1};

        endfunction

        virtual function void unpackFromData(ref SdBusTransData data);

        endfunction

endclass

class SdBusTransToken extends SdBusTrans;

        logic transbit;

        logic[5:0] id;

        SDCommandArg arg;

        aCrc7 crc;

        function aCrc7 calcCrcOfToken();

                logic temp[$] = { >> { cSdStartbit, this.transbit, this.id, this.arg}};

                return calcCrc7(temp);

        endfunction

        virtual function SdBusTransData packToData();

                SdBusTransData data = { >> {transbit, id, arg, crc}};

                return data;

        endfunction

        virtual function void unpackFromData(ref SdBusTransData data);

                { >> {transbit, id, arg, crc}} = data;

        endfunction

endclass;

typedef mailbox #(SdBusTransToken) SdBfmMb;

`endif