How to integrate the interface of AHB VIP into SoC level?

UVM
,
7

In reply to cgales:

The top-level TB instantiates all required interfaces and connects them to the DUT at the appropriate locations (direct port connections, assigns, bind statements, etc).

I am still a little confused about this .

Here is my interpretation ::


//  block_top_tb where Agent Works in Active Mode i.e Driver-Sequencer pair are present 
    
     apb_intf   intf  ( clk , reset ) ; // Driven  via  Driver  at  Block-level

     Block_DUT  block_top ( intf ) ;

     initial  begin
// Fetched in  Test where Agent config object is created and assigned to Env's config  object  
     uvm_config_db#( virtual apb_intf ) :: set( null , "uvm_test_top" , "agent_vif_intf" , intf );

        run_test("sanity_test"); 

      end

 //  Within  Monitor  at  block-level
   
     virtual  apb_intf   vif_intf  ; //  Agent could directly assign it after creating monitor component

     //  [ OR ]
      
     //  Within  any  phase  prior  to  run-time  phase   ::
     
//  Agent  first  fetches  it's  Config  and  then  sets  it  again  via  "mon_vif_intf" for  the  monitor  to fetch  it  ::  
    uvm_config_db#( virtual apb_intf ) :: get( this , "" , "mon_vif_intf" , vif_intf );

Then when trying to re-use at system-level where the Block-level’s Agent will work in Passive Mode ::


 //  Within  System-level  top_tb ::

  axi_top     system_intf  ( clk , reset ) ; // Driven  via  Driver  at  System-level

  system_top   chip_top( axi_top );

Now ’ Block_DUT ’ would exist multiple levels of hierarchy below ’ system_top ’

Eg : top_tb.chip_top.subsystem_a.block_a where the interface signals would be connected during instantiation of block_a ( block_a is instance name of Block_DUT within the System-level DUT )

So how should we set the virtual interface apb_intf for the passive agent to fetch it via it’s Config object ?

The following comes to my mind ::


   //   Within  System-level  top_tb  create  an  additional  instance  of  apb_intf  ::
       
       assign  blk_clk =  top_tb.chip_top.subsystem_a.block_a.clk ;

       assign  blk_rst =  top_tb.chip_top.subsystem_a.block_a.rst ;

       apb_intf  intf_block ( blk_clk , blk_rst );
       
     initial  begin

       force  intf_block.sig1  = top_tb.chip_top.subsystem_a.block_a.sig1 ;
       force  intf_block.sig2  = top_tb.chip_top.subsystem_a.block_a.sig2 ;
       force  ...............  =  ....................................... ;
     
      end

      initial  begin

uvm_config_db#( virtual apb_intf ) :: set( null , "uvm_test_top" , "block_vif_intf" , intf_block );
 
       end

Would there a better solution possible using bind construct ?