Subversion Repositories uart2bus_testbench

//-------------------------------------------------------------------------------------------------

//

//                             UART2BUS VERIFICATION

//

//-------------------------------------------------------------------------------------------------

// CREATOR    : HANY SALAH

// PROJECT    : UART2BUS UVM TEST BENCH

// UNIT       : TEST

//-------------------------------------------------------------------------------------------------

// TITLE      : UART TEST

// DESCRIPTION: THIS COMPONENT INCLUDES THE MAIN TESTS THAT WILL BE FORCED TO THE DUT. IT INCLUDES

//              VIRTUAL BASE TEST FUNCTION THAT SHARES THE MOST COMMON ATTRIBUTES OF ALL TESTS.

//              THE TESTS IMPLEMENTED THROUGH BELOW ARE RELATED TO THE TESTBENCH SPECIFICATIONS

//              DOCUMENT. YOU CAN DOWNLOAD IT DIRECTLY THROUGH OPENCORES.COM OR FIND IT IN THE DOC

//              DIRECTORY.

//-------------------------------------------------------------------------------------------------

// LOG DETAILS

//-------------

// VERSION      NAME        DATE        DESCRIPTION

//    1       HANY SALAH    10012016    FILE CREATION

//    2       HANY SALAH    20012016    ADD BINARY MODE TESTS AND INVALID TESTS

//    3       HANY SALAH    12022016    IMPROVE BLOCK DESCRIPTION & ADD COMMENTS

//-------------------------------------------------------------------------------------------------

// ALL COPYRIGHTS ARE RESERVED FOR THE PRODUCER ONLY .THIS FILE IS PRODUCED FOR OPENCORES MEMBERS

// ONLY AND IT IS PROHIBTED TO USE THIS MATERIAL WITHOUT THE CREATOR'S PERMISSION

//-------------------------------------------------------------------------------------------------

//  The base test class that includes the uvm printer and establish the whole environment.

//  It also responsible for setting the environment configurations described in details through the

//  testbench specifications document.

//  The environment configurations are set during the end of elaboration phase. It includes:

//    ----------------------------------------------------------------------------------------

//  - The active edge   : The active clock edge at which, the data is changed on the UART buses.

//                        It could be positive edge or negative edge.

//    ----------------------------------------------------------------------------------------

//  - The start bit     : Represent the sequence through which the byte is serialized; either to

//                        start with the most significant bit or the least significant bit.

//    ----------------------------------------------------------------------------------------

//  - The data format   : The data representation through the text commands either to be ASCII

//                        format or ordinary binary format.

//    ----------------------------------------------------------------------------------------

//  - The number of stop: The number of stop bits sent after the latest bit of each byte. It

//    bit(s)              would be either one or two bits

//    ----------------------------------------------------------------------------------------

//  - The number of bits: The number of bits within each transferred field. It would be either

//    in the field        7 or 8 bits per field.

//    ----------------------------------------------------------------------------------------

//  - The parity mode   : The used parity type of each field. It would be either no parity bit,

//                        odd parity or even parity.

//    ----------------------------------------------------------------------------------------

//  - The response time : Represent the maximum allowable time within which DUT should respond

//                        to the driven request.

//    ----------------------------------------------------------------------------------------

//  - The false data    : Enable force false data on the output port within the read command

//    enable              through the both modes; text or binary.

//    ----------------------------------------------------------------------------------------

virtual class uart_base_test extends uvm_test;

  uart_env          env;

  uvm_table_printer printer;

  uart_config       _config;

  `uvm_component_utils(uart_base_test)

  function new (string name,uvm_component parent);

    super.new(name,parent);

  endfunction:new

  function void build_phase (uvm_phase phase);

    super.build_phase(phase);

    env = uart_env::type_id::create("env",this);

    _config = uart_config::type_id::create("_config",this);

    uvm_config_db#(uart_config)::set(this,"*","UART_CONFIGURATION",_config);

    printer = new();

    printer.knobs.depth = 3;

    env_configuration();

  endfunction:build_phase

  function void connect_phase (uvm_phase phase);

    super.connect_phase(phase);

  endfunction:connect_phase

  function void env_configuration ();

    _config._edge         = pos_edge;

    _config._start        = lsb;

    _config._datamode     = ascii;

    _config.num_stop_bits = 1;

    _config.num_of_bits   = 8;

    _config._paritymode   = parity_off;

    _config.response_time = 8680;

    _config.use_false_data= no;

  endfunction:env_configuration

  task run_phase (uvm_phase phase);

    phase.phase_done.set_drain_time(this,5000);

  endtask:run_phase

endclass:uart_base_test

//-------------------------------------------------------------------------------------------------

//

//                          PURE TEXT MODE TESTS

//

//-------------------------------------------------------------------------------------------------

  //  This test apply thirteen successive tests of UART write request using text communication mode.

  //  Refer to test plan section in the testbench specifications document for more details.

  class write_text_mode extends uart_base_test;

    seq_1p1   seq1;

    seq_1p2   seq2;

    seq_1p3   seq3;

    seq_1p4   seq4;

    seq_1p5   seq5;

    seq_1p6   seq6;

    seq_1p7   seq7;

    seq_1p8   seq8;

    seq_1p9   seq9;

    seq_1p10  seq10;

    seq_1p11  seq11;

    seq_1p12  seq12;

    seq_1p13  seq13;

    `uvm_component_utils(write_text_mode)

    function new (string name,uvm_component parent);

      super.new(name,parent);

    endfunction:new

    function void build_phase (uvm_phase phase);

      super.build_phase (phase);

      seq1  = seq_1p1::type_id::create("seq1");

      seq2  = seq_1p2::type_id::create("seq2");

      seq3  = seq_1p3::type_id::create("seq3");

      seq4  = seq_1p4::type_id::create("seq4");

      seq5  = seq_1p5::type_id::create("seq5");

      seq6  = seq_1p6::type_id::create("seq6");

      seq7  = seq_1p7::type_id::create("seq7");

      seq8  = seq_1p8::type_id::create("seq8");

      seq9  = seq_1p9::type_id::create("seq9");

      seq10 = seq_1p10::type_id::create("seq10");

      seq11 = seq_1p11::type_id::create("seq11");

      seq12 = seq_1p12::type_id::create("seq12");

      seq13 = seq_1p13::type_id::create("seq13");

    endfunction:build_phase

    task run_phase (uvm_phase phase);

      super.run_phase(phase);

      phase.raise_objection(this);

      seq1.start(env.agent._seq,null);

      seq2.start(env.agent._seq,null);

      seq3.start(env.agent._seq,null);

      seq4.start(env.agent._seq,null);

      seq5.start(env.agent._seq,null);

      seq6.start(env.agent._seq,null);

      seq7.start(env.agent._seq,null);

      seq8.start(env.agent._seq,null);

      seq9.start(env.agent._seq,null);

      seq10.start(env.agent._seq,null);

      seq11.start(env.agent._seq,null);

      seq12.start(env.agent._seq,null);

      seq13.start(env.agent._seq,null);

      phase.drop_objection(this);

    endtask:run_phase

  endclass:write_text_mode

  //  This test apply thirteen successive tests of UART read request using text communication mode.

  //  Refer to test plan section in the testbench specifications document for more details.

  class read_text_mode extends uart_base_test;

    seq_2p1   seq1;

    seq_2p2   seq2;

    seq_2p3   seq3;

    seq_2p4   seq4;

    seq_2p5   seq5;

    seq_2p6   seq6;

    seq_2p7   seq7;

    seq_2p8   seq8;

    seq_2p9   seq9;

    seq_2p10  seq10;

    seq_2p11  seq11;

    seq_2p12  seq12;

    seq_2p13  seq13;

    `uvm_component_utils(read_text_mode)

    function new (string name,uvm_component parent);

      super.new(name,parent);

    endfunction:new

    function void build_phase (uvm_phase phase);

      super.build_phase(phase);

      seq1  = seq_2p1::type_id::create("seq1");

      seq2  = seq_2p2::type_id::create("seq2");

      seq3  = seq_2p3::type_id::create("seq3");

      seq4  = seq_2p4::type_id::create("seq4");

      seq5  = seq_2p5::type_id::create("seq5");

      seq6  = seq_2p6::type_id::create("seq6");

      seq7  = seq_2p7::type_id::create("seq7");

      seq8  = seq_2p8::type_id::create("seq8");

      seq9  = seq_2p9::type_id::create("seq9");

      seq10 = seq_2p10::type_id::create("seq10");

      seq11 = seq_2p11::type_id::create("seq11");

      seq12 = seq_2p12::type_id::create("seq12");

      seq13 = seq_2p13::type_id::create("seq13");

    endfunction:build_phase

    task run_phase (uvm_phase phase);

      super.run_phase(phase);

      phase.raise_objection(this);

      seq1.start(env.agent._seq,null);

      seq2.start(env.agent._seq,null);

      seq3.start(env.agent._seq,null);

      seq4.start(env.agent._seq,null);

      seq5.start(env.agent._seq,null);

      seq6.start(env.agent._seq,null);

      seq7.start(env.agent._seq,null);

      seq8.start(env.agent._seq,null);

      seq9.start(env.agent._seq,null);

      seq10.start(env.agent._seq,null);

      seq11.start(env.agent._seq,null);

      seq12.start(env.agent._seq,null);

      seq13.start(env.agent._seq,null);

      phase.drop_objection(this);

    endtask:run_phase

  endclass:read_text_mode

//-------------------------------------------------------------------------------------------------

//

//                          PURE BINARY MODE TESTS

//

//-------------------------------------------------------------------------------------------------

  //  This test apply six successive tests of UART nop request using binary communication mode.

  //  Refer to test plan section in the testbench specifications document for more details.

  class nop_command_mode extends uart_base_test;

    seq_3p1   seq1;

    seq_3p2   seq2;

    seq_3p3   seq3;

    seq_4p1   seq4;

    seq_4p2   seq5;

    seq_4p3   seq6;

    `uvm_component_utils(nop_command_mode)

    function new (string name,uvm_component parent);

      super.new(name,parent);

    endfunction:new

    function void build_phase (uvm_phase phase);

      super.build_phase(phase);

      seq1  = seq_3p1::type_id::create("seq1");

      seq2  = seq_3p2::type_id::create("seq2");

      seq3  = seq_3p3::type_id::create("seq3");

      seq4  = seq_4p1::type_id::create("seq4");

      seq5  = seq_4p2::type_id::create("seq5");

      seq6  = seq_4p3::type_id::create("seq6");

    endfunction:build_phase

    task run_phase(uvm_phase phase);

      super.run_phase(phase);

      phase.raise_objection(this);

      seq1.start(env.agent._seq,null);

      seq2.start(env.agent._seq,null);

      seq3.start(env.agent._seq,null);

      seq4.start(env.agent._seq,null);

      seq5.start(env.agent._seq,null);

      seq6.start(env.agent._seq,null);

      phase.drop_objection(this);

    endtask:run_phase

  endclass:nop_command_mode

  //  This test apply ten successive tests of UART write request using binary communication mode.

  //  Refer to test plan section in the testbench specifications document for more details.

  class write_command_mode extends uart_base_test;

    seq_5p1   seq1;

    seq_5p2   seq2;

    seq_5p3   seq3;

    seq_5p4   seq4;

    seq_5p5   seq5;

    seq_5p6   seq6;

    seq_5p7   seq7;

    seq_5p8   seq8;

    seq_5p9   seq9;

    seq_5p10  seq10;

    `uvm_component_utils(write_command_mode)

    function new (string name,uvm_component parent);

      super.new(name,parent);

    endfunction:new

    function void build_phase (uvm_phase phase);

      super.build_phase(phase);

      seq1  = seq_5p1::type_id::create("seq1");

      seq2  = seq_5p2::type_id::create("seq2");

      seq3  = seq_5p3::type_id::create("seq3");

      seq4  = seq_5p4::type_id::create("seq4");

      seq5  = seq_5p5::type_id::create("seq5");

      seq6  = seq_5p6::type_id::create("seq6");

      seq7  = seq_5p7::type_id::create("seq7");

      seq8  = seq_5p8::type_id::create("seq8");

      seq9  = seq_5p9::type_id::create("seq9");

      seq10 = seq_5p10::type_id::create("seq10");

    endfunction:build_phase

    task run_phase (uvm_phase phase);

      super.run_phase(phase);

      phase.raise_objection(this);

      uvm_test_done.set_drain_time(this,5000);

      //seq1.start(env.agent._seq,null);

      seq2.start(env.agent._seq,null);

      seq3.start(env.agent._seq,null);

      seq4.start(env.agent._seq,null);

      seq5.start(env.agent._seq,null);

      seq6.start(env.agent._seq,null);

      seq7.start(env.agent._seq,null);

      seq8.start(env.agent._seq,null);

      seq9.start(env.agent._seq,null);

      seq10.start(env.agent._seq,null);

      phase.drop_objection(this);

    endtask:run_phase

  endclass: write_command_mode

  //  This test apply ten successive tests of UART read request using binary communication mode.

  //  Refer to test plan section in the testbench specifications document for more details.

  class read_command_mode extends uart_base_test;

    seq_6p1   seq1;

    seq_6p2   seq2;

    seq_6p3   seq3;

    seq_6p4   seq4;

    seq_6p5   seq5;

    seq_6p6   seq6;

    seq_6p7   seq7;

    seq_6p8   seq8;

    seq_6p9   seq9;

    seq_6p10  seq10;

    `uvm_component_utils(read_command_mode)

    function new (string name,uvm_component parent);

      super.new(name,parent);

      seq1  = seq_6p1::type_id::create("seq1");

      seq2  = seq_6p2::type_id::create("seq2");

      seq3  = seq_6p3::type_id::create("seq3");

      seq4  = seq_6p4::type_id::create("seq4");

      seq5  = seq_6p5::type_id::create("seq5");

      seq6  = seq_6p6::type_id::create("seq6");

      seq7  = seq_6p7::type_id::create("seq7");

      seq8  = seq_6p8::type_id::create("seq8");

      seq9  = seq_6p9::type_id::create("seq9");

      seq10 = seq_6p10::type_id::create("seq10");

    endfunction:new

    function void build_phase (uvm_phase phase);

      super.build_phase(phase);

    endfunction:build_phase

    task run_phase (uvm_phase phase);

      super.run_phase(phase);

      phase.raise_objection(this);

      //seq1.start(env.agent._seq,null);

      seq2.start(env.agent._seq,null);

      seq3.start(env.agent._seq,null);

      seq4.start(env.agent._seq,null);

      seq5.start(env.agent._seq,null);

      seq6.start(env.agent._seq,null);

      seq7.start(env.agent._seq,null);

      seq8.start(env.agent._seq,null);

      seq9.start(env.agent._seq,null);

      seq10.start(env.agent._seq,null);

      phase.drop_objection(this);

    endtask:run_phase

  endclass:read_command_mode

//-------------------------------------------------------------------------------------------------

//

//                        COMBINED COMMAND TESTS

//

//-------------------------------------------------------------------------------------------------

  // this test randomly apply series of 100 text mode commands. They would be either read or write

  // sequences described in text mode tests in the testbench specifications document.

  class text_mode_test extends uart_base_test;

    rand int unsigned command_number;

    seq_1p1   seq1;

    seq_1p2   seq2;

    seq_1p3   seq3;

    seq_1p4   seq4;

    seq_1p5   seq5;

    seq_1p6   seq6;

    seq_1p7   seq7;

    seq_1p8   seq8;

    seq_1p9   seq9;

    seq_1p10  seq10;

    seq_1p11  seq11;

    seq_1p12  seq12;

    seq_1p13  seq13;

    seq_2p1   seq14;

    seq_2p2   seq15;

    seq_2p3   seq16;

    seq_2p4   seq17;

    seq_2p5   seq18;

    seq_2p6   seq19;

    seq_2p7   seq20;

    seq_2p8   seq21;

    seq_2p9   seq22;

    seq_2p10  seq23;

    seq_2p11  seq24;

    seq_2p12  seq25;

    seq_2p13  seq26;

    `uvm_component_utils(text_mode_test)

    constraint limit {

        command_number inside {[1:26]};

    }

    function new (string name , uvm_component parent);

      super.new(name,parent);

    endfunction:new

    function void build_phase (uvm_phase phase);

      super.build_phase(phase);

      seq1  = seq_1p1::type_id::create("seq1");

      seq2  = seq_1p2::type_id::create("seq2");

      seq3  = seq_1p3::type_id::create("seq3");

      seq4  = seq_1p4::type_id::create("seq4");

      seq5  = seq_1p5::type_id::create("seq5");

      seq6  = seq_1p6::type_id::create("seq6");

      seq7  = seq_1p7::type_id::create("seq7");

      seq8  = seq_1p8::type_id::create("seq8");

      seq9  = seq_1p9::type_id::create("seq9");

      seq10 = seq_1p10::type_id::create("seq10");

      seq11 = seq_1p11::type_id::create("seq11");

      seq12 = seq_1p12::type_id::create("seq12");

      seq13 = seq_1p13::type_id::create("seq13");

      seq14 = seq_2p1::type_id::create("seq14");

      seq15 = seq_2p2::type_id::create("seq15");

      seq16 = seq_2p3::type_id::create("seq16");

      seq17 = seq_2p4::type_id::create("seq17");

      seq18 = seq_2p5::type_id::create("seq18");

      seq19 = seq_2p6::type_id::create("seq19");

      seq20 = seq_2p7::type_id::create("seq20");

      seq21 = seq_2p8::type_id::create("seq21");

      seq22 = seq_2p9::type_id::create("seq22");

      seq23 = seq_2p10::type_id::create("seq23");

      seq24 = seq_2p11::type_id::create("seq24");

      seq25 = seq_2p12::type_id::create("seq25");

      seq26 = seq_2p13::type_id::create("seq26");

    endfunction:build_phase

    task run_phase (uvm_phase phase);

      super.run_phase(phase);

      phase.raise_objection(this);

      repeat (100)

        begin

        randomize();

        case (command_number)

          1:

            begin

            seq1.start(env.agent._seq,null);

            end

          2:

            begin

            seq2.start(env.agent._seq,null);

            end

          3:

            begin

            seq3.start(env.agent._seq,null);

            end

          4:

            begin

            seq4.start(env.agent._seq,null);

            end

          5:

            begin

            seq5.start(env.agent._seq,null);

            end

          6:

            begin

            seq6.start(env.agent._seq,null);

            end

          7:

            begin

            seq7.start(env.agent._seq,null);

            end

          8:

            begin

            seq8.start(env.agent._seq,null);

            end

          9:

            begin

            seq9.start(env.agent._seq,null);

            end

          10:

            begin

            seq10.start(env.agent._seq,null);

            end

          11:

            begin

            seq11.start(env.agent._seq,null);

            end

          12:

            begin

            seq12.start(env.agent._seq,null);

            end

          13:

            begin

            seq13.start(env.agent._seq,null);

            end

          14:

            begin

            seq14.start(env.agent._seq,null);

            end

          15:

            begin

            seq15.start(env.agent._seq,null);

            end

          16:

            begin

            seq16.start(env.agent._seq,null);

            end

          17:

            begin

            seq17.start(env.agent._seq,null);

            end

          18:

            begin

            seq18.start(env.agent._seq,null);

            end

          19:

            begin

            seq19.start(env.agent._seq,null);

            end

          20:

            begin

            seq20.start(env.agent._seq,null);

            end

          21:

            begin

            seq21.start(env.agent._seq,null);

            end

          22:

            begin

            seq22.start(env.agent._seq,null);

            end

          23:

            begin

            seq23.start(env.agent._seq,null);

            end

          24:

            begin

            seq24.start(env.agent._seq,null);

            end

          25:

            begin

            seq25.start(env.agent._seq,null);

            end

          26:

            begin

            seq26.start(env.agent._seq,null);

            end

          default:

            begin

            `uvm_fatal("OUT OF RANGE","Command Number is Out of Range")

            end

        endcase

        end

        phase.drop_objection(this);

    endtask:run_phase

  endclass:text_mode_test