register a register call back to a reg_block model

[JonMccallum]

Hello All,

 

I am trying to register my call back class to the register block model for the test bench.

 

Here is my register call back class.

class aiop_register_call_back extends uvm_reg_cbs;

    

  `uvm_object_utils(aiop_register_call_back);

 

  // Set the Function Name

  function new(string name = "aiop_register_call_back");

     super.new(name);

     //this.set_response_queue_error_report_disabled(1'b1);

  endfunction 

 

  uvm_elem_kind_e element_kind;

  uvm_object element; 

  uvm_access_e kind; 

  uvm_reg_data_t value[]; 

  uvm_reg_addr_t offset;

  uvm_status_e status;

  uvm_path_e path;

  uvm_sequence_base parent;

 

  virtual task post_write(uvm_reg_item rw);

    element_kind = rw.element_kind;

    element      = rw.element;

    value        = rw.value;

    offset       = rw.offset;

    status       = rw.status;

    path         = rw.path;

    parent       = rw.parent;

    `uvm_info("AIOP REGISTER CALL BACK", $sformatf("%0s,%0s,%0h,%0h,%0s,%0s,%0s",element_kind,element,value,offset,status,path,parent), UVM_NONE);

  endtask

 

endclass : aiop_register_call_back

 

My question is how would I associate this call back to the reg_block model in the test bench. I have been searching for a while and have not been able to find a clear example or answer to this.

 

I have tried using:

uvm_callbacks::add(reg_block object handle, callback object)

`uvm_register_cb(reg_block,callback)

 

Any help appreciated.

 

 

 

[steve]

Hi John,

 

The uvm_reg_cbs class can only be associated with uvm_reg, uvm_reg_field, uvm_mem, or uvm_reg_backdoor objects.

From your example, I suspect that you wish to associate your callback class with a given register in a reg block, such as: 

 

aiop_register_call_back cb = new();
uvm_reg_cb::add(reg_block.get_reg_by_name("my_reg_name"), cb);

 

Regards,

Steve