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