/ovm-2.0.1/examples/tlm/producer_consumer/fifo.sv

  1// $Id: //dvt/vtech/dev/main/ovm/examples/tlm/producer_consumer/fifo.sv#9 $
  2//----------------------------------------------------------------------
  3//   Copyright 2007-2008 Mentor Graphics Corporation
  4//   Copyright 2007-2008 Cadence Design Systems, Inc.
  5//   All Rights Reserved Worldwide
  6//
  7//   Licensed under the Apache License, Version 2.0 (the
  8//   "License"); you may not use this file except in
  9//   compliance with the License.  You may obtain a copy of
 10//   the License at
 11//
 12//       http://www.apache.org/licenses/LICENSE-2.0
 13//
 14//   Unless required by applicable law or agreed to in
 15//   writing, software distributed under the License is
 16//   distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 17//   CONDITIONS OF ANY KIND, either express or implied.  See
 18//   the License for the specific language governing
 19//   permissions and limitations under the License.
 20//----------------------------------------------------------------------
 21
 22
 23/* 
 24About: producer_consumer
 25
 26this test is the basic simple to illustrates how to create a producer and consumer which are completely independent and connecting them using a tlm_fifo channel
 27
 28
 29Walk through the test:
 30
 31two thrads *producer* and *consumer* will use ovm_blocking_put port and ovm_blocking_get port, to transfer an integer from the producer to the consumer through fifo exports at the connection function of an environment class
 32
 33
 34*/
 35
 36
 37
 38//----------------------------------------------------------------------
 39// module top
 40//----------------------------------------------------------------------
 41module test;
 42
 43`ifdef INCA
 44  `include "ovm.svh"
 45`else 
 46  import ovm_pkg::*;
 47`endif
 48  
 49  //----------------------------------------------------------------------
 50  // class producer
 51  //----------------------------------------------------------------------
 52  class producer extends ovm_component;
 53
 54    ovm_blocking_put_port#(int) put_port;
 55    
 56    function new(string name, ovm_component p = null);
 57      super.new(name,p);
 58      put_port = new("put_port", this);
 59      
 60    endfunction
 61    
 62    task run;
 63      
 64      int randval;
 65      string s;
 66      
 67      for(int i = 0; i < 10; i++)
 68        begin
 69          randval = $random % 100;
 70	  #10;
 71          $sformat(s, "sending   %4d", randval);
 72          ovm_report_info("producer", s);
 73          put_port.put(randval);
 74        end
 75    endtask
 76    
 77  endclass : producer
 78  
 79  //----------------------------------------------------------------------
 80  // class consumer
 81  //----------------------------------------------------------------------
 82  class consumer extends ovm_component;
 83
 84    ovm_blocking_get_port#(int) get_port;
 85    
 86    function new(string name, ovm_component p = null);
 87      super.new(name,p);
 88      get_port = new("get_port", this);
 89    endfunction
 90    
 91    task run;
 92      
 93      int val;
 94      string s;
 95      
 96      forever
 97        begin
 98          get_port.get(val);
 99          $sformat(s, "receiving %4d", val);
100          ovm_report_info("consumer", s);
101        end
102      
103    endtask
104    
105  endclass : consumer
106  
107  //----------------------------------------------------------------------
108  // class env
109  //----------------------------------------------------------------------
110  class env extends ovm_env;
111    producer p;
112    consumer c;
113    tlm_fifo #(int) f;
114    
115    function new(string name = "env");
116      super.new(name);
117      p = new("producer", this);
118      c = new("consumer", this);
119      f = new("fifo", this);
120      $display("fifo put_export: %s", f.m_name);
121    endfunction
122    
123    function void connect();
124      p.put_port.connect(f.put_export);
125      c.get_port.connect(f.get_export);
126    endfunction
127    
128    task run();
129      #1000 global_stop_request();
130    endtask
131    
132  endclass
133  
134  // Main body of module top:
135  env e;
136  
137  initial begin
138    e = new();
139    e.run_test();
140    //$finish;
141  end
142
143endmodule // test
144