Create apb_sb.sv

Author: PRADEEPCHANGAL

apb_sb.sv

@@ -0,0 +1,108 @@
+class apb_sb extends uvm_scoreboard;
+  `uvm_component_utils(apb_sb)
+   
+`uvm_analysis_imp_decl(_W)
+`uvm_analysis_imp_decl(_R)
+
+  virtual apb_if vif;
+  
+  apb_transaction trans_write;
+  apb_transaction trans_read;
+  
+  uvm_analysis_imp_W #(apb_transaction, apb_sb) sb_export_write;
+  uvm_analysis_imp_R #(apb_transaction, apb_sb) sb_export_read;
+  
+  bit   WPSLVERR, RPSLVERR;
+  bit [31:0]    read_q[$];
+  bit [31:0]    write_q[$];
+  bit [31:0]   write,read;
+  int compare_pass =0, compare_fail =0;
+  
+ // uvm_tlm_analysis_fifo #(apb_transaction) write_fifo;
+ // uvm_tlm_analysis_fifo #(apb_transaction) read_fifo;
+  
+  function new (string name ="apb_sb", uvm_component parent);
+    super.new(name, parent);
+  endfunction
+  
+  function void build_phase(uvm_phase phase);
+    super.build_phase(phase);
+    sb_export_write = new("sb_export_write", this);
+    sb_export_read = new("sb_export_read", this);
+        if(!uvm_config_db#(virtual apb_if)::get(this,"","vif",vif)) begin
+      `uvm_error("build_phase","driver virtual interface failed")
+    end
+ //   write_fifo = new("write_fifo", this);
+ //   read_fifo = new("read_fifo", this);
+  endfunction
+  
+ /* function void connect_phase(uvm_phase phase);
+    sb_export_write.connect(write_fifo.analysis_export);
+    sb_export_read.connect(read_fifo.analysis_export);
+ endfunction: connect_phase */
+  
+  virtual function void write_W (input apb_transaction trans);
+    write_q.push_back(trans.PWDATA);
+    WPSLVERR = trans.PSLVERR;
+    `uvm_info("SB",$sformatf("Got Write Transaction: write queue size =%0d PRESET =%0d, PSEL =%0d, PWRITE =%0d, PENABLE =%0d, ADDR =%0d, PWDATA =%0d PSLVERR = %0d", write_q.size(),trans.PRESET,trans.PSEL,trans.PWRITE,trans.PENABLE,trans.PADDR,trans.PWDATA,trans.PSLVERR),UVM_LOW)
+  endfunction
+ 
+  virtual function void write_R (input apb_transaction trans);
+    read_q.push_back(trans.PRDATA);
+    RPSLVERR = trans.PSLVERR;
+    `uvm_info("SB",$sformatf("Got Read Transaction: read q size =%0d PRESET =%0d, PSEL =%0d, PWRITE =%0d, PENABLE =%0d, ADDR =%0d, PWDATA =%0d PSLVERR = %0d",read_q.size(), trans.PRESET,trans.PSEL,trans.PWRITE,trans.PENABLE,trans.PADDR,trans.PRDATA,trans.PSLVERR),UVM_LOW)
+  endfunction
+  
+  task run_phase(uvm_phase phase);
+
+  forever begin
+      @(posedge vif.PCLK) begin 
+      if(WPSLVERR || RPSLVERR) begin
+	    if(WPSLVERR) begin
+		`uvm_info("SB",$sformatf("We are in RUN PHASE: We got PSLVERR"),UVM_LOW) 
+		write = write_q.pop_front(); end //when error is present we don't want to comapre read and write data
+		if(RPSLVERR) begin
+		`uvm_info("SB",$sformatf("We are in RUN PHASE: We got PSLVERR"),UVM_LOW) 
+		read =  read_q.pop_front(); end
+		end
+	  else begin
+      if(write_q.size() >0 && read_q.size() >0) begin 
+         write = write_q.pop_front();
+         read  = read_q.pop_front();
+      `uvm_info("SB",$sformatf("We are in RUN PHASE: Wdata =%0d Rdata =%0d",write,read),UVM_LOW) 
+         compare();
+     end
+	 end
+  end
+  end
+  endtask
+  
+   
+  virtual function void compare();
+    if(write == read) begin
+      `uvm_info("compare", $sformatf("Test: OK! Write Data = %0d Read Data = %0d",write,read), UVM_LOW);
+      compare_pass++;
+      end else begin
+        `uvm_info("compare", $sformatf("Test: Fail! Write Data = %0d Read Data = %0d",write,read), UVM_LOW);
+        compare_fail++;
+      end
+  endfunction: compare 
+    
+     //Report Phase 
+  	function void report_phase(uvm_phase phase);
+   		super.report_phase(phase);
+ 
+      if(compare_fail>0) 
+		begin
+     			`uvm_info(get_type_name(), "---------------------------------------", UVM_NONE)
+          `uvm_info(get_type_name(), $sformatf("----       TEST FAIL COUNTS  %0d     ----",compare_fail), UVM_NONE)
+     			`uvm_info(get_type_name(), "---------------------------------------", UVM_NONE)
+    		end
+      if(compare_pass>0)
+		begin
+     			`uvm_info(get_type_name(), "---------------------------------------", UVM_NONE)
+          `uvm_info(get_type_name(), $sformatf("----       TEST PASS COUNTS  %0d     ----",compare_pass), UVM_NONE)
+     			`uvm_info(get_type_name(), "---------------------------------------", UVM_NONE)
+    		end
+  	endfunction : report_phase  
+endclass