[SOLVED] How to handle the interface with package?

How to handle the interface with package?

I am creating a simple UVM tb these days, and I meet an issue with interface usage. Here is my code in the /my_proj/tb_uvm/intf/my_if.svh file: (interface definition)

interface my_if (
    input iCLK,
    input iRSTb,
    inout data
);
clocking monitor_cb @(posedge iCLK);
    input iRSTb;
    input data;
endclocking
modport monitor_mp(
    clocking monitor_cb
); 
endinterface : my_if

and I need to instance this interface in the /my_proj/tb_uvm/agent/my_driver.svh file :

class my_driver extends uvm_driver;
    `uvm_component_utils(my_driver)
    virtual my_if m_vif;
    ...
endclass

I tried to define a package file (named my_agt_pkg.sv) under /my_proj/tb_uvm/agent/ because there are several driver/monitor files in this directory including the my_driver.svh I mentioned above.

package my_agt_pkg;
    import uvm_pkg::*;

    `include "my_driver.svh"
    `include "../intf/my_if.svh"
     ....
endpackage

but I failed to compile because of below error. Could anyone give me help on this issue?

Found 'interface' inside package before 'endpackage'. 'interface' inside 'package' is not allowed.

Solution

The error message means what is says: you are not allowed to declare an interface inside a package.

A virtual interface is a peculiar concept. It behaves like a class variable, but an interface gets defined and instantiated like a module.

Just move your interface declaration outside the package