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        : WbTransaction.sv

// Owner       : Rainer Kastl

// Description : Transaction on the wishbone bus

// Links       :

//

`ifndef WBTRANSACTION_SV

`define WBTRANSACTION_SV

typedef bit[2:0] WbAddr;

typedef bit[31:0] WbData;

class WbTransaction;

        typedef enum { Read, Write } kinds;

        typedef enum { Classic, Burst, End } types;

        rand types Type;

        rand kinds Kind;

        rand WbAddr Addr;

        rand WbData Data;

        function void display();

                $display(toString());

        endfunction

        function string toString();

                string s;

                $swrite(s, "Transaction: %s, %s, %b, %b", Type.name(), Kind.name(), Addr, Data);

                return s;

        endfunction

        constraint NotImplementedYet {

                Type == Classic;

        };

endclass

class WbTransactionSequence;

        rand WbTransaction transactions[];

        int size = 0;

        constraint Transactions {

                transactions.size() == size;

                foreach(transactions[i]) {

                        if (i > 0) {

                                if (transactions[i].Type == WbTransaction::Burst)

                                        transactions[i].Type == WbTransaction::Burst || WbTransaction::End;

                        }

                }

                if (transactions[size - 2].Type == WbTransaction::Burst)

                        transactions[size - 1].Type == WbTransaction::End;

        };

        function void display();

                foreach(transactions[i])

                        transactions[i].display();

        endfunction

endclass

typedef mailbox #(WbTransaction) WbTransMb;

`endif