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toomuch |
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//*****************************************************************************************************************
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// Copyright (c) 2007 TooMuch Semiconductor Solutions Pvt Ltd.
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//
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//File name : ahb_wb_scoreboard.svh
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//Designer : Sanjay kumar
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//Date : 3rd Aug'2007
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toomuch |
//Description : ahb_wb_scoreboard:Class to receive monitor packet from the publisher(monitor) and check for
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toomuch |
// protocol matching.
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//Revision : 1.0
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//*****************************************************************************************************************
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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import avm_pkg::*;
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import global::*;
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class ahb_wb_scoreboard extends avm_threaded_component;
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analysis_fifo#(monitor_pkt) ap_fifo; // analysis port fifo
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analysis_if#(monitor_pkt) ap_if; // analysis port interface
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// local variables
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logic [AWIDTH-1:0]adr1;
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logic [AWIDTH-1:0]adr2;
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logic [DWIDTH-1:0]dat1;
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logic [DWIDTH-1:0]dat2;
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// monitor packet
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monitor_pkt m_pkt;
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virtual ahb_wb_if pin_if;
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function new(string name ,avm_named_component parent);
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super.new(name,parent);
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ap_fifo =new("ap_fifo",this);
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ap_if =null;
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pin_if =null;
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//avm_report_severity_action(MESSAGE,NO_ACTION);
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endfunction
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// connecting analysis fifo to the analysis interface
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function void export_connections();
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ap_if = ap_fifo.analysis_export;
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endfunction
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task run;
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forever
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begin
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ap_fifo.get(m_pkt);
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if(m_pkt.sel && (m_pkt.mode == 'b10)) //No wait state
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if(m_pkt.wr) //write mode
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if(m_pkt.flag1) // first clock no comaprison only sampling the values
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adr1=m_pkt.adr1;
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else
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if(m_pkt.flag2) // first clock after after wait state
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begin
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if((( adr1==m_pkt.adr1) && (dat1==m_pkt.dat1) && (adr2==m_pkt.adr2) && (dat2==m_pkt.dat2)) || (( adr1 === m_pkt.adr2 ) && (m_pkt.dat1 === m_pkt.dat2)));
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//avm_report_message("Scoreboard: Write Passed","after wait state");
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else
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avm_report_warning("Scoreboard: Error in write after wait state",display_pkt(m_pkt));
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adr1=m_pkt.adr1; // Holding the previous address
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end
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else
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begin
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if(( adr1 === m_pkt.adr2 ) && (m_pkt.dat1 === m_pkt.dat2));
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//avm_report_message("Scoreboard: Write Passed","without wait state");
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else
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begin
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avm_report_warning("Scoreboard: Error in write without wait state",display_pkt(m_pkt));
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end
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adr1=m_pkt.adr1;
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end
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else// read mode
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if(m_pkt.flag1) // first clock no comaprison only sampling the values
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adr1=m_pkt.adr1;
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else
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if(m_pkt.flag2) // first clock after after wait state
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begin
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if((( adr1==m_pkt.adr1) && (dat1==m_pkt.dat1) && (adr2==m_pkt.adr2) && (dat2==m_pkt.dat2)) || (( adr1 === m_pkt.adr2 ) && (m_pkt.dat1 === m_pkt.dat2)));
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//avm_report_message("Scoreboard: Read Passed","after wait state");
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else
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avm_report_warning("Scoreboard: Error in read after wait state",display_pkt(m_pkt));
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adr1=m_pkt.adr1;
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end
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else
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begin
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if(( adr1 === m_pkt.adr2 ) && (m_pkt.dat1 === m_pkt.dat2)); // comparing unknown values too
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//avm_report_message("Scoreboard: Read Passed","without wait state");
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else
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begin
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avm_report_warning("Scoreboard: Error in read without wait state",display_pkt(m_pkt));
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end
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adr1=m_pkt.adr1;
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end
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else // wait state by slave or master
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if(m_pkt.flag2) // latch the value
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begin
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adr1=m_pkt.adr1;
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dat1=m_pkt.dat1;
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adr2=m_pkt.adr2;
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dat2=m_pkt.dat2;
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end
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else
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if(( adr1==m_pkt.adr1) && (dat1==m_pkt.dat1) && (adr2==m_pkt.adr2) && (dat2==m_pkt.dat2));
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//$display("Passed wait");
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//avm_report_message("Scoreboard: Passed","with wait state");
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else
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begin
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avm_report_warning("Scoreboard: Error in with wait state",display_pkt(m_pkt));
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end
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end
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endtask
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// function to display values at any instant :)
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function string display_pkt(input monitor_pkt m);
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string s;
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$sformat(s,"current_adr1=%0d,adr1=%0d,adr2=%0d,dat1=%0d,dat2=%0d,wr=%0b,mode=%0b,sel=%0b,f1=%b,f2=%b",adr1,m.adr1,m.adr2,m.dat1,m.dat2,m.wr,m.mode,m.sel,m.flag1,m.flag2);
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return s;
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endfunction
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endclass
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