Functional Coverage for Register model

Coverage
1

Hi,
I need help in getting the functional coverage for register model. I generated Register model package and covergroups for each register using the Register Assistant tool from Mentor Graphics. Small code snippet for single register covergroup as shown below:

Covergroup c1;
port: coverpoint port.value[4:0];
ack : coverpoint ack.value[5:0];
response: coverpoint response.value[1:0];
endgroup
 
function new(string name="   ");
 super.new(name,build_coverage(UVM_CVR_FIELD_VALS));
add_coverage(build_coverage(UVM_CVR_FIELD_VALS));
if(has_coverage(UVM_CVR_FIELD_VALS)
  c1=new();
endfunction

virtual function void sample_values();
 super.sample_values();
 if(get_coverage(UVM_CVR_FIELD_VALS))
  c1.sample();
endfunction

In the base test class, I have written the following code:

function void proj_test_base::build_phase(uvm_phase build);

// Register model

uvm_reg::include_coverage(“*”, UVM_CVR_FIELD_VALS);
proj_rm = proj_reg_block::type_id::create(“proj_rm”);
proj_rm.build();
endfunction

In the makefile, I used the following command:

vsim -c tb_mem -coverage -do “run -a; coverage save cov.ucdb; vcover report -html cov.ucdb ;q”

But, Questasim tool was not able to generate any UCDB files related to coverage.
Is there any code should be written to get the Register coverage? Please help me…