Subversion Repositories ahb2wishbone

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

//*****************************************************************************************************************

// Copyright (c) 2007 TooMuch Semiconductor Solutions Pvt Ltd.

//

//File name             :       ahb_wb_driver.svh

//Designer              :       Sanjay kumar

//Date                  :       3rd Aug'2007

//Description           :       ahb_wb_driver:Class to receive packets from the tlm fifo and passed it to the

//                              interface of the AHB to Wishbone bridge.

//Revision              :       1.0

//*****************************************************************************************************************

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

import avm_pkg::*;

import global::*;

class ahb_wb_driver extends avm_threaded_component;

// communication ports

avm_nonblocking_get_port #(ahb_req_pkt) request_port;

tlm_fifo #(ahb_req_pkt) fifo;

virtual ahb_wb_if pin_if;

        function new(string name ,avm_named_component parent);

                super.new(name,parent);

                request_port =new("request_port",this);

                fifo =new("fifo",this);

                pin_if   =null;

        endfunction

task run;

        ahb_req_pkt req;

        ahb_res_pkt res;

        forever

                begin

                        @(posedge pin_if.master_ab.hclk);

                                        if(pin_if.master_ab.hready && pin_if.master_ab.hresetn)

                                                begin

                                                        if(request_port.try_get(req))

                                                        write_to_bus(req);

                                                end

                end

endtask

// write data to bus

virtual task write_to_bus(input ahb_req_pkt req);

                #2      pin_if.master_ab.htrans=req.mode;

                        pin_if.master_ab.hwrite=req.wr;

                        pin_if.master_ab.haddr =req.adr;

                        pin_if.master_ab.hwdata=req.dat;

                        //avm_report_message("Driver:Packet on interface",global::convert2string(req));

endtask

endclass