AXI-Verification/axi_monitor.sv

`include "uvm_macros.svh" 
import uvm_pkg::*;
class axi_mon1 extends uvm_monitor;
`uvm_component_utils axi_mon1;
virtual axi_slave_if  mon_avif;
uvm_analysis_port #(axi_txn) a_mon_ap;
axi_txn w_trans;
axi_txn r_trans;
function new(string name  axi_mon1",uvm_component parent =null);
  super.new(name, parent);
 // w_done =1;
  //r_done =1;
endfunction

function void build_phase(uvm_phase phase);
 super.build_phase(phase);
`uvm_info("monitor","build_phase",UVM_MEDIUM)
a_mon_ap=new("a_mon_ap",this);
w_trans= axi_txn :: type_id :: create("axi_mon_txn");
r_trans= axi_txn :: typeid :: create(" r_trans");
endfunction:build_phase

task run_phase(uvm_phase phase);
    forever begin
       // run_mon(phase);
        //@(mon_avif.clk);
      fork 
        begin
          write_monitor();
          read_monitor();
        end
      join_none
    end
endtask: run_phase

/* task run_mon(uvm_phase phase);
    fork
        if(w_done) begin
            phase.raise_objection(this);
              w_done=0;
              write_monitor();
              w_done=1;        
            phase.drop_objection(this);
        end
        if(r_done) begin
            phase.raise_objection(this);
              r_done=0;
            read_monitor();
              r_done=1;
            phase.drop_objection(this);
        end
        
    join_none
endtask: run_mon  */
task write_monitor();
    if( mon_avif.awvalid &&  mon_avif.awready) begin
        w_trans         = axi_txn ::type_id::create("w_trans");
        w_trans.awaddr    =  mon_avif.awaddr;
        w_trans.awid  =  mon_avif.awid;
        w_trans.awsize  =  mon_avif.awsize;
        w_trans.awlen  =  mon_avif.awlen;
        w_trans.awburst  =  mon_avif.awburst;
        w_trans.wdata    = new [w_trans.awlen+1];
        for (int i=0; i<w_trans.awlen+1; i++) begin
            @( mon_avif.clk);
            wait( mon_avif.wvalid &&  mon_avif.wready);
            w_trans.wdata[i] = new [D_WIDTH/8];
            for (int j=0; j<D_WIDTH/8; j++) begin
                w_trans.wdata[i][j] =  mon_avif.wdata[8*j+:8];
            end
        end
          ap.write(w_trans);
        `uvm_info("MMON", $sformatf("WTRANS %s", w_trans.convert2string()), UVM_HIGH)
    end
endtask: write_monitor

task read_monitor();
    if( mon_avif.arvalid &&  mon_avif.arready) begin
        r_trans         = axi_txn#(D_WIDTH, A_WIDTH)::type_id::create("r_trans");
        r_trans.araddr   =  mon_avif.araddr;
        r_trans.arid      =  mon_avif.arid;
        r_trans.arsize  =  mon_avif.arsize;
        r_trans.awlen   =  mon_avif.awlen;
        r_trans.arburst  = mon_avif.arburst;
        ap.write(r_trans);
        `uvm_info("MMON", $sformatf("RTRANS %s", r_trans.convert2string()), UVM_HIGH)
    end
endtask: read_monitor
endclass
module top_v axi_mon1 dut;
initial
 begin
repeat(5)
dut=new();
assert(dut.randomize);
$display("done");
end
endmodule