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/*

Author: Sujeet Kumar Layek

Designation: IP/SoC Verification Engineer

*/

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​

​

import uvm_pkg::*;

`include "uvm_macros.svh"

​

// TOP

module top;

  int a = 5; 

  ;

  initial

    begin

      // Setting the value of the variable for lower hierarchy

      uvm_config_db #(int) :: set (null,"*","inttt",a);

      // Calling the 'test' from top.

      run_test();

    end

endmodule

​

​

// SEQUENCER 

class seqr extends uvm_sequencer;

​

   `uvm_sequencer_utils(seqr)

  function new (string name, uvm_component parent);

    super.new(name, parent);

  endfunction

​

endclass

​

​

// SEQUENCE

class seq extends uvm_sequence;

  `uvm_object_utils (seq)

  int d = 10; // This 'd' will take the value of 'a' which has been set in top.

  function new(string name = "seq");

    super.new(name);

  endfunction

​

  virtual task body();

    $display("get_full_name:");

    `uvm_info (get_full_name(), $sformatf (" :: Set the local value of 'SEQ' D = %0d\n", d), UVM_LOW )

    $display("get_type_name:");

    `uvm_info (get_type_name(), $sformatf (" :: Set the local value of 'SEQ' D = %0d\n", d), UVM_LOW )

    $display("get_name:");

    `uvm_info (get_name(), $sformatf (" :: Set the local value of 'SEQ' D = %0d\n", d), UVM_LOW )

    uvm_config_db #(int) :: get (null, get_full_name(),"inttt", d);

    $display("\n************************************");

    $display("Class 'SEQ' get from top :: D = %0d",d);

    $display("************************************\n");

  endtask

​

endclass

​

​

​

// ENV

class env extends uvm_component;

  `uvm_component_utils(env)

  int c;

  seqr seqr_h;

  function new(string name = "env", uvm_component parent);

    super.new(name,parent);

  endfunction

  function void build_phase (uvm_phase phase);

    // Creating 'SEQUENCER' inside 'ENV'

    seqr_h = seqr::type_id::create("seqr_h",this);

    // Getting the value of the variable in ENV in a different variable

    uvm_config_db #(int) :: get (this,"","int",c);

    $display("\n************************************");

    $display("Class 'ENV' get from top :: C = %0d",c);

    $display("************************************\n");

  endfunction

endclass

​

​

// TEST

class test extends uvm_component;

  `uvm_component_utils(test)

  int b;

  env env_h;

  seq seq_h;

​

  function new(string name = "test", uvm_component parent);

    super.new(name,parent);

  endfunction

  function void build_phase (uvm_phase phase);

    // Creating 'ENV' inside 'TEST'

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

    // Getting the value of the variable in TEST in a different variable

    uvm_config_db #(int) :: get (this,"","int",b);

    $display("\n************************************");

    $display("Class 'TEST' get from top :: B = %0d",b);

    $display("************************************\n");

  endfunction

​

  virtual function void end_of_elaboration_phase (uvm_phase phase);

    $display ("\nPrinting the UVM Topology: -\n");

    uvm_top.print_topology ();

  endfunction

  // Start the sequence

  virtual task run_phase(uvm_phase phase);

    // Creating 'SEQ' inside 'TEST'

    seq_h = seq::type_id::create("seq_h");

    // UVM Objection

    phase.raise_objection(this);

      seq_h.start (env_h.seqr_h);

    phase.drop_objection(this);

  endtask

endclass