BFM in VHDL - from Quartus2 13.0

From the release 13.0 of Quartus2, BFM in VHDL are supported.

Before 13.0, BFM were only supported in Verilog and there was a testbench example in System Verilog found in "Avalon Verification IP Suite Design Example" (ug_avalon_verification.zip) that worked fine.

Now I'm trying to adapt that example in a VHDL-only simulation in order to use Modelsim Starter Edition and BFMs with my VHDL custom files.

I'm finding some troubles for 2 reasons:

1) VHDL BFM approach is not well documented

2) the differences in hierarchy between Verilog and VHDL.

In the Verilog example, the top file and the test_program file were correctly separated and in the test_program.sv with the define you could access every signal in every like this:

`define CLK tb.st_bfm_qsys_tutorial_inst_clk_bfm

and then use with the dot notation

`CLK.clk

What is the best way to accomplish this in VHDL? Is there anyone who has already adapted that example?

Thank you very much

Luca