Subversion Repositories openhmc

/*
 *                              .--------------. .----------------. .------------.
 *                             | .------------. | .--------------. | .----------. |
 *                             | | ____  ____ | | | ____    ____ | | |   ______ | |
 *                             | ||_   ||   _|| | ||_   \  /   _|| | | .' ___  || |
 *       ___  _ __   ___ _ __  | |  | |__| |  | | |  |   \/   |  | | |/ .'   \_|| |
 *      / _ \| '_ \ / _ \ '_ \ | |  |  __  |  | | |  | |\  /| |  | | || |       | |
 *       (_) | |_) |  __/ | | || | _| |  | |_ | | | _| |_\/_| |_ | | |\ `.___.'\| |
 *      \___/| .__/ \___|_| |_|| ||____||____|| | ||_____||_____|| | | `._____.'| |
 *           | |               | |            | | |              | | |          | |
 *           |_|               | '------------' | '--------------' | '----------' |
 *                              '--------------' '----------------' '------------'
 *
 *  openHMC - An Open Source Hybrid Memory Cube Controller
 *  (C) Copyright 2014 Computer Architecture Group - University of Heidelberg
 *  www.ziti.uni-heidelberg.de
 *  B6, 26
 *  68159 Mannheim
 *  Germany
 *
 *  Contact: openhmc@ziti.uni-heidelberg.de
 *  http://ra.ziti.uni-heidelberg.de/openhmc
 *
 *   This source file is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This source file is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this source file.  If not, see <http://www.gnu.org/licenses/>.
 *
 *
 */

`ifndef AXI4_STREAM_MASTER_SEQUENCE_SV
`define AXI4_STREAM_MASTER_SEQUENCE_SV

class axi4_stream_master_sequence extends uvm_sequence;

        rand int delay;
        rand hmc_packet response;
        rand bit error_response;
    event item_available;

        hmc_packet response_queue[$];
        
        constraint delay_c {
                delay dist {0:=4, [0:9]:=8, [10:30]:=2, [31:100]:=1};
        }

        `uvm_object_utils(axi4_stream_master_sequence)
        
        `uvm_declare_p_sequencer(axi4_stream_master_sequencer)

        function new(string name="axi4_stream_master_sequence");
                super.new(name);
        endfunction : new

        task body();
                
                void'(this.randomize());
                
                fork
                        // Convert requests to responses
                        forever begin : tranlsate_loop
                                hmc_packet packet;
                                p_sequencer.req_mailbox.get(packet);
                                create_response_packet(packet);
                        end : tranlsate_loop
                        
                        // 
                        begin
                                hmc_packet packet;
                                
                                forever begin : send_loop
                                        
                                        if (response_queue.size() > 0) begin
                                                int time_to_wait;

                                                time_to_wait = response_queue[0].timestamp - $time;
                                                if (time_to_wait <= 0) begin
                                                        packet = response_queue.pop_front();
                                                        uvm_report_info(get_type_name(), $psprintf("Sending response packet: %s", packet.command.name()), UVM_HIGH);
                                                        `uvm_send(packet)
                                                end else begin
                                                        #time_to_wait;
                                                end
                                        end
                                        else begin
                                                // Wait for items to get added to the queue
                                                if (response_queue.size() == 0)
                                                        @(item_available);
                                        end
                                        
                                end : send_loop
                        end
                join
                
        endtask : body

endclass : axi4_stream_master_sequence

`endif // AXI4_STREAM_MASTER_SEQUENCER_SV