| |
| // $Id: //dvt/vtech/dev/main/ovm-tests/examples/tlm/hierarchy/hierarchy.sv#1 $ |
| //---------------------------------------------------------------------- |
| // Copyright 2007-2009 Mentor Graphics Corporation |
| // Copyright 2007-2009 Cadence Design Systems, Inc. |
| // All Rights Reserved Worldwide |
| // |
| // Licensed under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in |
| // compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in |
| // writing, software distributed under the License is |
| // distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR |
| // CONDITIONS OF ANY KIND, either express or implied. See |
| // the License for the specific language governing |
| // permissions and limitations under the License. |
| //---------------------------------------------------------------------- |
| |
| |
| /* |
| About: hierarchy |
| This test is supposed to test the hierarchical connection between ports of hierarchical threads using a tlm_fifo exports. |
| |
| |
| Walk through the test: |
| A thread *gen* will use an ovm_blocking_put_port to put a transaction. |
| |
| A *conv* thread will use an ovm_blocking_put_port to put a transaction,an ovm_blocking_get_port to get a transactions, and an ovm_analysis_ port to a writte a transaction through it. |
| |
| Another thread *bfm* will use an ovm_blocking_get_port to only get the transactions that has been sent by the other threads. |
| |
| A *listener* will extends the ovm_subscriber, to implement the analysis port write function. |
| |
| A *producer* component will use ovm_blocking_put_port and ovm_analysis_port and a tlm_fifo, to connect the *gen* and *conv* put, get and analysis ports through the fifo exports. |
| |
| A *consumer* component will use ovm_blocking_put export and connect it directly to a fifo export, also will connect the *bfm* get port to the fifo export |
| |
| At *top* env, the *producer*, *consumer*, and the the *listener* will be connected |
| |
| */ |
| |
| |
| `include "ovm_macros.svh" |
| |
| |
| module test; |
| |
| import ovm_pkg::*; |
| |
| //---------------------------------------------------------------------- |
| // class transaction |
| //---------------------------------------------------------------------- |
| class transaction extends ovm_transaction; |
| |
| rand int data; |
| rand int addr; |
| |
| function void copy( input transaction t ); |
| data = t.data; |
| addr = t.addr; |
| endfunction |
| |
| function bit comp( input transaction a , input transaction b ); |
| return ((a.data == b.data) && (a.addr == b.addr)); |
| endfunction |
| |
| function ovm_object clone(); |
| transaction t; |
| |
| t = new(); |
| t.copy(this); |
| return t; |
| endfunction |
| |
| function string convert2string(); |
| string s; |
| $sformat(s, "[ addr = %x, data = %x ]", addr, data); |
| return s; |
| endfunction |
| |
| endclass |
| |
| //---------------------------------------------------------------------- |
| // component gen |
| //---------------------------------------------------------------------- |
| class gen extends ovm_component; |
| |
| ovm_blocking_put_port #(transaction) put_port; |
| |
| function new(string name, ovm_component parent); |
| super.new(name, parent); |
| put_port = new("put_port", this); |
| endfunction |
| |
| task run; |
| transaction t; |
| string msg; |
| |
| for(int i=0; i < 20; i++) begin |
| t = new(); |
| assert(t.randomize()); |
| `ovm_info("gen", $sformatf("sending : %s", t.convert2string()), OVM_MEDIUM) |
| put_port.put(t); |
| end |
| endtask |
| |
| endclass |
| |
| |
| //---------------------------------------------------------------------- |
| // componenet conv |
| //---------------------------------------------------------------------- |
| class conv extends ovm_component; |
| |
| ovm_blocking_put_port #(transaction) put_port; |
| ovm_blocking_get_port #(transaction) get_port; |
| ovm_analysis_port #(transaction) ap; |
| |
| function new(string name, ovm_component parent); |
| super.new(name, parent); |
| put_port = new("put_port", this); |
| get_port = new("get_port", this); |
| ap = new("analysis_port", this); |
| endfunction |
| |
| task run; |
| transaction t; |
| |
| forever begin |
| get_port.get(t); |
| ap.write(t); |
| put_port.put(t); |
| end |
| endtask |
| |
| endclass |
| |
| //---------------------------------------------------------------------- |
| // componenet bfm |
| //---------------------------------------------------------------------- |
| class bfm extends ovm_component; |
| |
| ovm_blocking_get_port #(transaction) get_port; |
| |
| function new(string name, ovm_component parent); |
| super.new(name, parent); |
| get_port = new("get_port", this); |
| endfunction |
| |
| task run; |
| transaction t; |
| |
| forever begin |
| get_port.get(t); |
| `ovm_info("bfm", $sformatf("receiving: %s", t.convert2string()),OVM_MEDIUM) |
| end |
| endtask |
| |
| endclass |
| |
| class listener extends ovm_subscriber #(transaction); |
| function new(string name, ovm_component parent); |
| super.new(name,parent); |
| endfunction // new |
| |
| function void write(input transaction t); |
| `ovm_info(m_name, $sformatf("Received: %s", t.convert2string()), OVM_MEDIUM) |
| endfunction // write |
| endclass // listener |
| |
| //---------------------------------------------------------------------- |
| // componenet producer |
| //---------------------------------------------------------------------- |
| // begin codeblock producer |
| class producer extends ovm_component; |
| |
| ovm_blocking_put_port #(transaction) put_port; |
| ovm_analysis_port #(transaction) ap; |
| |
| gen g; |
| conv c; |
| tlm_fifo #(transaction) f; |
| |
| function new(string name, ovm_component parent); |
| super.new(name, parent); |
| put_port = new("put_port", this); |
| ap = new("analysis_port", this); |
| g = new("gen", this); |
| c = new("conv", this); |
| f = new("fifo", this); |
| endfunction |
| |
| function void connect(); |
| g.put_port.connect(f.blocking_put_export); // A |
| c.get_port.connect(f.blocking_get_export); // B |
| endfunction |
| |
| function void import_connections(); |
| c.put_port.connect(put_port); // C |
| c.ap.connect(ap); |
| endfunction |
| |
| endclass |
| |
| //---------------------------------------------------------------------- |
| // componenet consumer |
| //---------------------------------------------------------------------- |
| class consumer extends ovm_component; |
| |
| ovm_blocking_put_export #(transaction) put_export; |
| |
| bfm b; |
| tlm_fifo #(transaction) f; |
| |
| function new(string name, ovm_component parent); |
| super.new(name, parent); |
| put_export = new("put_export", this); |
| f = new("fifo", this); |
| b = new("bfm", this); |
| endfunction |
| |
| function void export_connections(); |
| put_export.connect(f.blocking_put_export); |
| endfunction |
| |
| function void connect(); |
| b.get_port.connect(f.blocking_get_export); |
| endfunction |
| |
| endclass |
| |
| //---------------------------------------------------------------------- |
| // componenet top |
| //---------------------------------------------------------------------- |
| class top extends ovm_env; |
| |
| producer p; |
| consumer c; |
| listener l; |
| |
| function new(string name, ovm_component parent); |
| super.new(name, parent); |
| p = new("producer", this); |
| c = new("consumer", this); |
| l = new("listener", this); |
| |
| // Connections may also be done in the constructor, if you wish |
| p.put_port.connect(c.put_export); |
| p.ap.connect(l.analysis_export); |
| endfunction |
| task run; |
| begin |
| end |
| endtask |
| |
| endclass |
| |
| //---------------------------------------------------------------------- |
| // environment env |
| //---------------------------------------------------------------------- |
| class env extends ovm_env; |
| top t; |
| |
| function new(string name = "env"); |
| super.new(name); |
| t = new("top", this); |
| endfunction |
| |
| task run; |
| #1000; |
| global_stop_request(); |
| endtask |
| |
| endclass |
| |
| //---------------------------------------------------------------------- |
| // module test |
| //---------------------------------------------------------------------- |
| env e; |
| |
| initial begin |
| e = new("e"); |
| e.run_test(); |
| end |
| |
| endmodule // test |
