Subversion Repositories wisbone_2_ahb

//******************************************************************************************************

// Copyright (c) 2007 TooMuch Semiconductor Solutions Pvt Ltd.

//File name             :       wb_ahb_coverage.svh

//Designaer             :       Ravi S Gupta

//Date                  :       4 Sept, 2007

//Description           :       Coverage Status for WISHBONE_AHB Bridge

//Revision              :       1.0

//******************************************************************************************************

// coverage  class

import avm_pkg::*;

import global::*;

class wb_ahb_coverage extends avm_threaded_component;

analysis_fifo#(monitor_pkt) ap_fifo; // analysis port fifo

analysis_if#(monitor_pkt) ap_if; // analysis port  interface

// local variables

logic [AWIDTH-1:0]adr1;

logic [AWIDTH-1:0]adr2;

logic [DWIDTH-1:0]dat1;

logic [DWIDTH-1:0]dat2;

bit stb,wr,ack;

// monitor packet

monitor_pkt m_pkt;

// coverage group

covergroup cov_wr;

         write_read: coverpoint wr; // cover read/write

         wr_with_wait_mst: cross  wr,stb;// cover read/write on wait state by master

         wr_with_wait_slv: cross  wr,ack;// cover read/write on wait state by slave

endgroup

        function new(string name ,avm_named_component parent);

                super.new(name,parent);

                ap_fifo  =new("ap_fifo",this);

                ap_if =null;

                cov_wr=new;

        endfunction

// connecting analysis fifo  to the analysis interface

function void export_connections();

        ap_if = ap_fifo.analysis_export;

endfunction

task run;

        forever

        begin

                ap_fifo.get(m_pkt); // receiving monitor_pkt from monitor

                // sampling the values of pkt to local variables

                stb=m_pkt.stb;

                wr=m_pkt.wr;

                ack=m_pkt.ack;

                // sample the coverpoints

                cov_wr.sample();

        end

endtask

endclass