mounika

seq_item.sv

@@ -0,0 +1,114 @@
+`include "uvm_macros.svh"
+import uvm_pkg::*;
+
+class axi_seq_item extends uvm_sequence_item;
+
+    //`uvm_object_utils(axi_seq_item)
+
+    function new(string name="axi_seq_item");
+	super.new(name);
+    endfunction
+    
+   //write address signals
+   rand bit  write;
+   rand logic  [31:0]  awaddr;
+   rand bit    [3:0]   awid;
+   rand logic  [3:0]   awlen;
+   rand logic  [2:0]   awsize;
+   rand logic  [1:0]   awburst;
+   rand logic  [1:0]   awlock;
+   
+   //write data signals
+   rand bit    [3:0]    wid;
+   rand logic  [31:0]   wdata[][];
+        logic  [3:0]    wstrb;
+        logic           wlast;
+
+   //write response signals
+   rand bit    [3:0]   Bid;
+        logic  [1:0]  Bresp;
+
+   //read address signals
+   rand logic  [31:0]  araddr;
+   rand bit    [3:0]   arid;
+   rand logic  [3:0]   arlen;
+   rand logic  [2:0]   arsize;
+   rand logic  [1:0]   arburst;
+   rand logic  [1:0]   arlock;
+
+
+   //read data signals
+   rand bit    [3:0]    rid;
+   rand logic  [31:0]   rdata[][];
+        logic  [3:0]    rresp;
+   rand logic           rlast;
+
+  `uvm_object_utils_begin(axi_seq_item)
+      `uvm_field_int(awid,UVM_ALL_ON)
+      `uvm_field_int(awaddr,UVM_ALL_ON)
+      `uvm_field_int(awsize,UVM_ALL_ON)
+      `uvm_field_int(awlen,UVM_ALL_ON)
+      `uvm_field_int(awburst,UVM_ALL_ON)
+      `uvm_field_int(awlock,UVM_ALL_ON)
+      `uvm_field_int(awvalid,UVM_ALL_ON)
+      `uvm_field_int(awready,UVM_ALL_ON)
+ 
+      `uvm_field_int(wid,UVM_ALL_ON)
+      `uvm_field_int(wdata,UVM_ALL_ON)
+      `uvm_field_int(wlast,UVM_ALL_ON)
+      `uvm_field_int(wstrb,UVM_ALL_ON)
+      `uvm_field_int(wvalid,UVM_ALL_ON)
+      `uvm_field_int(wready,UVM_ALL_ON)
+ 
+      `uvm_field_int(Bid,UVM_ALL_ON)
+      `uvm_field_int(Bresp,UVM_ALL_ON)
+      `uvm_field_int(Bvalid,UVM_ALL_ON)
+      `uvm_field_int(Bready,UVM_ALL_ON)
+ 
+      `uvm_field_int(arid,UVM_ALL_ON)
+      `uvm_field_int(araddr,UVM_ALL_ON)
+      `uvm_field_int(arsize,UVM_ALL_ON)
+      `uvm_field_int(arlen,UVM_ALL_ON)
+      `uvm_field_int(arsize,UVM_ALL_ON)
+      `uvm_field_int(arburst,UVM_ALL_ON)
+      `uvm_field_int(arlock,UVM_ALL_ON)
+      `uvm_field_int(arvalid,UVM_ALL_ON)
+      `uvm_field_int(arready,UVM_ALL_ON)
+ 
+      `uvm_field_int(rid,UVM_ALL_ON)
+      `uvm_field_int(rdata,UVM_ALL_ON)
+      `uvm_field_int(rlast,UVM_ALL_ON)
+      `uvm_field_int(rresp,UVM_ALL_ON)
+      `uvm_field_int(rvalid,UVM_ALL_ON)
+      `uvm_field_int(rready,UVM_ALL_ON)
+   `uvm_object_utils_end
+
+
+
+
+//constraints for axi
+
+//axi 4kb boundary
+constraint axi_4kb {awaddr%4096+(2**awsize*(awlen+1))<=4096;}
+
+//constarint for exclusive access 
+constraint exclusive_access {
+                               if(awlock==2'b01)
+                                  awlen inside{1,3,7,15};}
+
+// aligned addr
+constraint aligned_addr {awaddr%2**awsize==0;}
+ 
+//wrap addr 
+constraint wrap_addr {
+                       if(awburst==2'b 10)
+                           awlen inside{1,3,7,15};}
+//id's should be same
+constraint wid_awid {awid==wid;}
+ 
+//id's should be same
+constraint rid_awid {arid==rid;}
+ 
+endclass
+
+