Initial commit

* Bare skeleton implementation of everything
* Testbench builds with Verilator
* Test runs

tb/axi_monitor.sv

@@ -0,0 +1,117 @@
+// ----------------------------------------------------------------------
+// Monitor for AXI transactions
+// ----------------------------------------------------------------------
+class axi_monitor extends uvm_monitor; // #(axi_transaction);
+    virtual `AXI_INTF.MANAGER m_if;
+    virtual `AXI_INTF.SUBORDINATE s_if;
+    agent_type_t agent_type;
+
+    // Declare the analysis export
+    uvm_analysis_port ap;
+
+    // Filehandle for transaction tracker file
+    int trk_file;
+
+    `uvm_component_utils(axi_monitor)
+
+    // --------------------------------------------------
+    // Constructor
+    function new(string name = "axi_monitor", uvm_component parent = null);
+        super.new(name, parent);
+        ap = new("analysis_export", this);
+    endfunction
+
+    // --------------------------------------------------
+    // Set agent type
+    function void set_agent_type(agent_type_t atype);
+        agent_type = atype;
+        `uvm_info("set_agent_type", $sformatf("Agent type set to %s", agent_type.name()), UVM_LOW)
+    endfunction
+
+    // --------------------------------------------------
+    // Set virtual interfaces
+    function void set_virtual_intefaces(virtual `AXI_INTF.MANAGER m_if_p,
+                                        virtual `AXI_INTF.SUBORDINATE s_if_p);
+        `uvm_info("set_virtual_intefaces", $sformatf("Setting virtual interfaces"), UVM_LOW)
+
+        m_if = m_if_p;
+        s_if = s_if_p;
+    endfunction
+
+    // --------------------------------------------------
+    // Run phase
+    virtual function void run_phase(uvm_phase phase);
+        // Open transaction log file
+        trk_file = $fopen($sformatf("axi_transactions.%s.log", agent_type.name()), "w");
+        if (trk_file == 0) begin
+            `uvm_error("AXI_MONITOR", "Failed to open transaction log file")
+        end else begin
+            `uvm_info("AXI_MONITOR", "Transaction log file opened successfully", UVM_LOW)
+        end
+
+        // Start monitoring
+        do_monitor();
+    endfunction
+
+    // --------------------------------------------------
+    // Monitor logic to capture transactions
+    virtual task do_monitor();
+        if (agent_type == MANAGER) begin
+            do_manager_monitor();
+        end else if (agent_type == SUBORDINATE) begin
+            do_subordinate_monitor();
+        end else begin
+            `uvm_fatal("AXI_MONITOR", "Unknown agent type")
+        end
+    endtask
+
+    // --------------------------------------------------
+    // Monitor logic for MANAGER agent
+    virtual task do_manager_monitor();
+        // Placeholder for actual monitoring logic
+        // This would typically involve sampling signals and creating transactions
+        forever begin
+            axi_transaction txn;
+            @(posedge m_if.ACLK);
+
+            txn = axi_transaction::type_id::create("txn");
+
+            // Capture transaction details here
+
+            ap.write(txn);
+            write_transaction_to_file(txn);
+        end
+    endtask
+
+    // --------------------------------------------------
+    // Monitor logic for SUBORDINATE agent
+    virtual task do_subordinate_monitor();
+        // Placeholder for actual monitoring logic
+        // This would typically involve sampling signals and creating transactions
+        forever begin
+            axi_transaction txn;
+            @(posedge s_if.ACLK);
+
+            txn = axi_transaction::type_id::create("txn");
+
+            // Capture transaction details here
+
+            ap.write(txn);
+            write_transaction_to_file(txn);
+        end
+    endtask
+
+    // --------------------------------------------------
+    // Report phase
+    virtual function void report_phase(uvm_phase phase);
+        // Report any captured transactions or statistics
+        `uvm_info("axi_monitor", $sformatf("Reporting on %s",
+            get_full_name()), UVM_LOW)
+    endfunction
+
+    // --------------------------------------------------
+    // Function to write captured transaction into a file
+    function void write_transaction_to_file(axi_transaction txn);
+        $fwrite(trk_file, "%s\n", txn.sprint());
+    endfunction
+endclass : axi_monitor