class axi_drv extends uvm_driver#(axi_trans);

    `uvm_component_utils(axi_drv)
    virtual axi_if vif;
    axi_trans tnx;

    function new(string name="axi_drv",uvm_component parent);
        super.new(name,parent);
    endfunction

    function void build_phase(uvm_phase phase);
        super.build_phase(phase);
        if(!uvm_config_db#(virtual axi_if)::get(this,"","vif",vif))
            `uvm_error("build_phase","driver virtual interface failed");
    endfunction

    task run_phase(uvm_phase phase);
        `uvm_info("UVM_DRIVER",$sformatf("driver main phase ended"),UVM_LOW);
        forever
		begin
		seq_item_port.get_next_item(tnx);
		drive(tnx);
		seq_item_port.item_done();
		end
    endtask
    task driver();
  	        begin
			axi_write_address();
			axi_write_data();
			axi_write_resp();
			axi_read_address();
			axi_read_data();
		end
	endtask
task axi_write_addr(axi_trans txn);
                $display("start of drive_awaddr");
                vif.drv_cb.AWVALID <= 1;                                 
                vif.drv_cb.AWADDR <= txn.AWADDR;
                vif.drv_cb.AWSIZE <= txn.AWSIZE;
                vif.drv_cb.AWID <= txn.AWID;
                vif.drv_cb.AWLEN <= txn.AWLEN;
                vif.drv_cb.AWBURST <= txn.AWBURST;

                @(vif.drv_cb);
                wait(vif.drv_cb.AWREADY)
                vif.drv_cb.AWVALID <= 0;

                repeat
                        @(vif.drv_cb);

                $display("end of drive_awaddr");
        endtask
	task axi_write_data(axi_trans txn);

                $display("start of drive_wdata");
        foreach(txn.WDATA[i])
                        begin
                                vif.drv_cb.WVALID <= 1;
                                vif.drv_cb.WDATA <= txn.WDATA[i];
                                vif.drv_cb.WSTRB <= txn.WSTRB[i];
                                vif.drv_cb.WID <= txn.WID;
                                if(i==(txn.AWLEN))
                                        vif.drv_cb.WLAST <= 1;
                                else
                                        vif.drv_cb.WLAST <= 0;

                                @(vif.drv_cb);
                                wait(vif.drv_cb.WREADY)
                                    vif.drv_cb.WVALID <= 0;
                                    vif.drv_cb.WLAST <= 0;

                                repeat
                                        @(vif.drv_cb);
                        end

                $display("end of drive_wdata");
        endtask

	task axi_write_resp(axi_trans txn);

                $display("start of drive_bresp");
		foreach(tnx.)
			vif.drv_cb.BREADY<=1;
           @(vif.drv_cb)
           wait(vif.drv_cb.BVALID)
              vif.drv_cb.BREADY<=0;
           repeat
               @(vif.drv_cb);
            $display("end of drive_bresp");
        endtask

























  /*  task drive(axi_trans trans);
        begin
            `uvm_info("UVM_DRIVER",$sformatf("driver run driver task entered"),UVM_LOW);
            @(this.vif.drv_cb);
            
        `uvm_info("UVM_DRIVER",$sformatf("driver run drive task ended"),UVM_LOW);
        end
    endtask
endclass*/