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 <organization> 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 <COPYRIGHT HOLDER> 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        : SdCoreTransaction.sv
// Owner       : Rainer Kastl
// Description : 
// Links       : 
// 

`ifndef SDCORETRANSACTION_SV
`define SDCORETRANSACTION_SV

typedef bit[0:511][7:0] DataBlock;

class SdCoreTransaction;

        typedef enum { readSingleBlock, readMultipleBlock, writeSingleBlock,
                writeMultipleBlocks, erase, readSdCardStatus } kinds;

        rand kinds kind;
        rand int startAddr;
        rand int endAddr;
        rand DataBlock data[];

        local int maxAddr = 31;

        constraint datablocks {
                if (kind == writeMultipleBlocks) {
                        data.size() inside {[0:1000]};
                }
                else if (kind == writeSingleBlock) {
                        data.size() == 1;
                }
                else {
                        data.size() == 0;
                }

                kind == readSingleBlock || 
                kind == writeSingleBlock;

                startAddr inside {[0:maxAddr]};
                endAddr inside {[0:maxAddr]};
        };

        function SdCoreTransaction copy();
                SdCoreTransaction rhs = new();
                rhs.kind = this.kind;
                rhs.startAddr = this.startAddr;
                rhs.endAddr = this.endAddr;
                rhs.data = new[this.data.size()];
                rhs.data = this.data;
                return rhs;
        endfunction

        function string toString();
                string s;
                $swrite(s, "kind: %p, addresses: %d, %d", kind, startAddr, endAddr);
                return s;
        endfunction

        // compare kind and addresses
        // NOTE: data has to be checked with other objects
        function bit compare(input SdCoreTransaction rhs);
                if (rhs.kind == this.kind && rhs.startAddr == this.startAddr)
                        return 1;
                else return 0;
        endfunction

endclass

class SdCoreTransactionSequence;

        rand SdCoreTransaction transactions[];
        local const int size = 1000;

        function new();
                transactions = new[size];
                foreach(transactions[i]) transactions[i] = new();
        endfunction

        constraint randlength {
                transactions.size() inside {[100:1000]};
                transactions.size() < size;
        }

endclass

typedef mailbox #(SdCoreTransaction) SdCoreTransSeqMb;

`endif