aswini

driver.sv

@@ -0,0 +1,83 @@
+class driver extends uvm_driver #(wrap_txn);
+    `uvm_component_utils(driver)
+    virtual axi_if vif;
+    wrap_txn txn;
+    function new(string name ="driver",uvm_component parent);
+        suoer.new(name,parent);
+    endfunction
+
+    function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+        txn = wrap_txn::type_id::create("txn",this);
+        if(!uvm_config_db #(axi_if)::get(this,"","vif",vif))
+          `uvm_error("build phase","driver virtual interface failed")
+    endfunction
+
+    task run_phase(uvm_phase phase);
+       forever 
+        begin
+            seq_item_port.get_next_item(txn);
+            drive_logic(txn);
+            seq_item_port.item_done();
+        end
+    endtask
+
+    task drve_logic(wrap_txn txn);
+        begin
+            `uvm_info("AXI_DRIVER",$sformatf("driver started"),UVM_LOW);
+            @(vif.drv_cb);
+            vif.arst<=1;
+            @(vif.drv_cb);
+            vif.arst<=0;
+            if(wr_rd <= 1)
+            begin 
+            vif.awid <= txn.awid;
+            vif.awaddr<= txn.awaddr;
+            vif.awburst <= txn.awburst;
+            vif.awsize <= txn.awsize;
+            vif.awlen <= txn.awlen;
+            vif.awlock <= txn.awlen;
+            vif.awprot <= txn.awprot;
+            vif.awcache<= txn.awcache;
+            vif.awvalid <= 1;
+            wait(vif.drv_cb.awready == 1);
+            vif.awvalid <= 0;
+            @(vif.drv_cb);
+            for(int i =1;i<=vif.awlen+1;i++)
+            begin
+            vif.wid <= txn.wid;
+            vif.wdata<= txn.wdata.pop_front();
+            vif.wstrb <= txn.wstrb;
+            vif.awvalid <= 1;
+            if(i == vif.awlen+1)
+            vif.wlast <= txn.wlast;
+            else
+            vif.wlast <= 0;
+            wait(vif.wready == 1);
+            vif.wvalid <= 0;
+            end
+            @(vif.drv_cb);
+            vif.bid <= txn.bid;
+            vif.bresp <= txn.bresp;
+            vif.bvalid <= 1;
+            wait(vif.bready == 1);
+            vif.bvalid <= 0;
+          end
+        else
+        begin
+            vif.arid <= txn.arid;
+            vif.araddr<= txn.araddr;
+            vif.arburst <= txn.arburst;
+            vif.arsize <= txn.arsize;
+            vif.arlen <= txn.arlen;
+            vif.arlock <= txn.arlen;
+            vif.arprot <= txn.arprot;
+            vif.arcache<= txn.arcache;
+            vif.arvalid <= 1;
+            wait(vif.drv_cb.arready == 1);
+            vif.arvalid <= 0;
+            @(vif.drv_cb);
+            end
+        end
+    endtask
+

seq.sv

@@ -0,0 +1,45 @@
+class wr_seq extends uvm_sequence #(wrap_txn);
+    `uvm_object_utils(wr_seq)
+    wrap_txn txn;
+    function new(string name = "wr_seq");
+        super.new(name);
+    endfunction
+
+    task body();
+        txn=wrap_txn::type_id::create("txn");
+        start_item(txn);
+        assert(txn.randomize() with {wr_rd == 1;});
+        finish_item(txn);
+    endtask
+
+endclass
+
+class rd_seq extends uvm_sequence #(wrap_txn);
+    `uvm_object_utils(rd_seq)
+    wrap_txn txn;
+    function new(string name = "rd_seq");
+        super.new(name);
+    endfunction
+
+    task body();
+        txn=wrap_txn::type_id::create("txn");
+        start_item(txn);
+        assert(txn.randomize() with {wr_rd ==0;});
+        finish_item(txn);
+    endtask
+endclass
+
+class seq extends uvm_sequence#(wrap_txn);
+    `uvm_object_utils(seq)
+    wr_seq w_s;
+    rd_seq  r_s;
+    function new(string name = "seq");
+        super.new(name);
+    endfunction
+    task body();
+     `uvm_do(w_s);
+     `uvm_do(r_s);
+    endtask
+endclass
+ 
+