How to handle the interface with package?

Question

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.

dave_59 · Accepted Answer · 2018-05-16 18:52:04Z

3

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

answered May 16, 2018 at 18:52

dave_59

43.3k3 gold badges29 silver badges66 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Rocky Zheng Over a year ago

Hi Dave, If I want to instance this interface in the current sv file and this sv file is included in the package, how can I handle it ? ( I mean how can I declare the interface outside the package ?)

Rocky Zheng Over a year ago

I tried to exclude this my_if.svh in my_agt_pkg.sv file. and retry to compile but failed with below error: Error-[SV-UIOT] Undefined interface or type ../agent/my_driver.svh, 10 my_if, "m_vif" The definition for the forward-referenced interface 'my_if' is missing or 'my_if' is the name of an undefined user type.

Rocky Zheng Over a year ago

oh, It works if I move the include statement before the package definition. now this error is disappeared although next error is popped up. I will take a further look on my side.. anyway, thank you very much !

Collectives™ on Stack Overflow

How to handle the interface with package?

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related