venkat/axi_monitor.sv

//  Brief description: 
//    This is the axi master monitor, where in the information from the
//    virtual interface is caputured and translate into transaction level data  
//
//  Known exceptions to rules:
//    
//============================================================================
//  Author        : Venkatesh
//  Created on    : 30/05/2025
//  File Id       : 
//============================================================================
 
`ifndef AXI_MASTER_MONITOR_SV
`define AXI_MASTER_MONITOR_SV

class axi_master_monitor#(parameter int DATA_WIDTH_MAS = 32,parameter int ADDR_WIDTH_MAS = 32) extends uvm_monitor;
  `uvm_component_utils(axi_master_monitor)
  uvm_analysis_port#(axi_tx) ap_sb;
  uvm_analysis_port#(axi_tx) ap_fc;
  //virtual axi_intf vif;
  virtual axi_interface#(.DATA_WIDTH(DATA_WIDTH_MAS),.ADDR_WIDTH(ADDR_WIDTH_MAS)) vif;
  
  axi_m_agent_config m_cfg;
 
  int addr [int];
  int data[*];
  int resp[int];
  axi_tx w_tx,r_tx;
  
  extern function new(string name="",uvm_component parent=null);
  extern function void build_phase(uvm_phase phase);
  extern task run_phase(uvm_phase phase);
endclass

	//add a variable for configration of port
function axi_master_monitor :: new(string name="",uvm_component parent=null);
  super.new(name,parent);
  //ap_port = new("ap_port",this);
endfunction
function axi_master_monitor :: void build_phase(uvm_phase phase);
  super.build_phase(phase); 
  if(!uvm_config_db#(virtual axi_interface)::get(this,"","vif",vif))begin
  	`uvm_error("[MONITOR]","VIF NOT RECEIVED FROM TOP")
  end
  if(!uvm_config_db #(axi_m_agent_config)::get(this,"","axi_m_agent_config",m_cfg)) begin
	`uvm_error("CONFIG","Getting failed in mst_monitor")
  end
  if(m_cfg.has_sb)
	ap_sb = new("ap_sb",this);
  if(m_cfg.has_fc)
    ap_fc = new("ap_fc",this);
endfunction
task axi_master_monitor :: run_phase(uvm_phase phase);
  forever begin
  @(vif.mon_cb);
    //write address channel
    if(vif.mon_cb.awvalid==1 && vif.mon_cb.awready==1)
    begin
    	`uvm_info("[AWCHECK]",$psprintf("%t write addr %h",$time,vif.mon_cb.awaddr),UVM_LOW)
    	w_tx             = axi_tx::type_id::create("w_tx");
    	w_tx.wr_rd		 = WRITE;
        w_tx.awid	     = vif.mon_cb.awid;       
        w_tx.awaddr        = vif.mon_cb.awaddr;
        w_tx.awlen         = vif.mon_cb.awlen;
        w_tx.awsize        = vif.mon_cb.awsize; 
        w_tx.awburst 	 = vif.mon_cb.awburst;
        w_tx.awcache     = vif.mon_cb.awcache;
        w_tx.awprot      = vif.mon_cb.awprot;
        w_tx.awlock      = vif.mon_cb.awlock;
        addr[vif.mon_cb.awid]=w_tx;
    
    end
    // write data channel
    if(vif.mon_cb.wvalid==1 && vif.mon_cb.wready==1)
    begin
    	`uvm_info("[WCHECK]",$psprintf("%t write data %h",$time,vif.mon_cb.wdata),UVM_LOW)
    	w_tx.wdata.push_back(vif.mon_cb.wdata);
    	w_tx.wstrb.push_back(vif.mon_cb.wstrb);
    	w_tx.wlast=vif.mon_cb.wlast;
    	data[]=w_tx;
    end
    //write response channel
    if(vif.mon_cb.bvalid==1 && vif.mon_cb.bready==1)
    begin
    	w_tx.bid = vif.mon_cb.bid;
    	`uvm_info("[BCHECK]",$psprintf("%t write RESP %h",$time,vif.mon_cb.bresp),UVM_LOW)
    	w_tx.bresp = vif.mon_cb.bresp;
    	resp[vif.mon_cb.bid]=w_tx;
    	ap_port.write(w_tx);
    end
    //read address channel
    if(vif.mon_cb.arvalid==1 && vif.mon_cb.arready==1)
    begin
    	`uvm_info("[ARCHECK]",$psprintf("%t read addr %h",$time,vif.mon_cb.araddr),UVM_LOW)
    	r_tx             = axi_tx::type_id::create("r_tx");
    	w_tx.wr_rd		 = READ;
        r_tx.arid	         = vif.mon_cb.arid;      
    	r_tx.araddr        = vif.mon_cb.araddr;
        r_tx.arlen         = vif.mon_cb.arlen;
        r_tx.arsize        = vif.mon_cb.arsize; 
        r_tx.arburst  = vif.mon_cb.arburst;
        r_tx.arcache       = vif.mon_cb.arcache;
        r_tx.arprot        = vif.mon_cb.arprot;
        r_tx.arlock        = vif.mon_cb.arlock;
    end
    //read data channel
    if(vif.mon_cb.rvalid==1 && vif.mon_cb.rready==1)
    begin
    	`uvm_info("[RCHECK]",$psprintf("%t write data %h",$time,vif.mon_cb.rdata),UVM_LOW)
    	r_tx.rid  = vif.mon_cb.rid;
    	r_tx.rdata.push_back(vif.mon_cb.rdata);
    	r_tx.rresp = vif.mon_cb.rresp;
    	r_tx.rlast = vif.mon_cb.rlast;
    	ap_port.write(r_tx);
    end
    end
endtask
`endif