Extending from a parameterized uvm class

UVM
, , ,
1

I have a parameterized base class which extends from uvm_component:

class bc_port_sb#(type T = uvm_sequence_item) extends uvm_component;
  `uvm_component_param_utils(bc_port_sb#(T))
endclass

I want to extend from this class with a different parameter:

class my_port_sb extends bc_port_sb#(my_pkt);
  `uvm_component_utils(my_port_sb)
endclass

I have instantiated this class in my env:

class my_env extends uvm_env;
  my_port_sb  scoreboard;
  scoreboard = my_port_sb::type_id::create("scoreboard", this);
endclass

I have also overriden the type of transaction in my base test:

class my_base_test extends uvm_test;
virtual function void build_phase(uvm_phase phase);
  super.build_phase(phase);
  set_type_override_by_type(my_pkt::get_type(),uvm_sequence_item::get_type());
endfunction
endclass

But I am still getting a compile error WRT the type of transaction:
Error-[ICTTFC] Incompatible complex type usage
Incompatible complex type usage in task or function call.
class TESTBENCH.my_env_pkg::bc_port_sb#(class my_env_pkg::my_pkt)', while the type of the formal is ‘class TESTBENCH.my_env_pkg::bc_port_sb#(class uvm_pkg::uvm_sequence_item)’

Can you please suggest as to what am I missing here?

2

In reply to sid02101990:

You are overriding the wrong class. It is not your seq_item you have to override. It is the scoreboard class which is parameterized. You have to override this one.

3

In reply to chr_sue:

Hi chr_sue,

Thanks for the reply.

By override the scoreboard class, do you mean:

set_type_override_by_type(bc_port_sb#(my_pkt)::get_type(),bc_port_sb#(uvm_sequence_item)::get_type());

I did this and got the same error.

4

In reply to sid02101990:

You have to consiuder the actual parameter for your class in the construction and the override.