mounika_drv

axi_drv.sv

@@ -0,0 +1,152 @@
+class axi_drv extends uvm_driver#(axi_seq_item)
+
+	`uvm_components_utils(axi_drv)
+
+    	virtual intf vif;
+	axi_seq_item txn;
+
+	int [31:0] temp[];
+
+    function new(string name="axi_drv",uvm_component parent);
+	    super.new(name.parent);
+    endfunction
+
+    function void build_phase(uvm_phase phase);
+
+     uvm_config_db#(virtual intf)::get(this,"",vif,vif);
+     txn=axi_seq_item::type_id::create(txn);
+
+    endfunction
+
+   task run_phase(uvm_phase phase);
+   begin
+	   get_next_item(txn);
+	   drive(txn);
+	   item_done();
+   
+   endtask
+
+   task drive(txn);
+
+     fork
+	   //  reset();
+	     write_add(txn);
+	     write_data(txn);
+	     read_add(txn);
+     
+     join
+    endtask
+
+    ///////////////write addr///////////
+
+      task write_add(txn);
+	      int lower_wrap_boundary;
+	      int upper_wrap_boundary;
+	      int burst_len,burst_size;
+	      int total_trans;
+	      
+		 if(txn.write==1)
+		 begin
+	        	 @(vif.clk);
+		      vif.awid<=txn.awid;
+		      vif.awlen<=txn.awlen;
+		      vif.awsize<=txn.awsize;
+		      vif.awburst<=txn.awburst;
+
+               /////////fixed burst/////////////
+
+		      if(txn.awburst==2'b00)
+		      begin
+			      vif.awaddr<=txn.awaddr;
+		      end
+
+	       /////////////incr burst//////////////
+	
+		      else if(txn.awaddr==2'b01)
+		      begin
+			      vif.awaddr<=txn.awaddr;
+			      for(int i=0;i<awlen;i++)
+			      begin
+			         vif.awaddr<=txn.awaddr+(2**awsize);
+			      end
+		      end
+
+		 //////////////////////wrap burst//////////
+
+		      else if(txn.awaddr==2'b10)
+		      begin
+			      if(awaddr%(2**awsize==0))
+			      begin
+				      burst_len=awlen+1;
+				      burst_size=2**awsize;
+				      total_trans=burst_len*burst_size;
+
+                               lower_wrap_boundary=int'(awaddr/total_trans)*total_trans;
+			       upper_wrap_boundary=lower_wrap_boundary+total_trans;
+		      
+                               end
+		       end
+		      vif.awvalid<=1;
+		      wait(vif.awready);
+		      @(vif.clk);                 
+		      vif.awvalid<=0;
+		  end
+
+      endtask
+
+//////////////write data///////////////
+
+     task write_data(txn);
+      begin
+      temp=new[txn.awlen+1];
+
+      forech(txn.wdata[i][j])
+      begin
+      temp[i][8*j+:8]=data[i][j];
+      end
+
+      for(i=0;i<awlen+1;i++)
+      begin
+
+      @(vif.clk);
+             vif.wid<=txn.wid;
+	     vif.wdata<=temp[i];
+	     vif.wlast<=(awlen==i)?1:0;
+     end
+     vif.wvalid<=1;
+     wait(vif.wready)
+      @(vif.clk);
+     vif.wvalid<=0;
+     end
+    endtask
+
+ ///////////read addr///////////
+    
+   task read_add(txn);
+    begin
+	    if(!txn.write)
+	    begin
+        	    @(vif.clk);
+		      vif.arid<=txn.arid;
+		      vif.araddr<=txn.araddr;
+		      vif.arlen<=txn.arlen;
+		      vif.arsize<=txn.arsize;
+		      vif.arburst<=txn.arburst;
+		      vif.arvalid<=1;
+		      wait(vif.arready);
+		      @(vif.clk);                 
+		      vif.arvalid<=0;
+	      end
+   end
+   endtask
+
+
+ endclass
+
+
+
+
+
+
+
+