Dear Sir,
I am not sure about the questions, I assume you are looking for the low level details of the port. If so,
wh_in is defined as:
in_data 64 bit (input, data)
in_stop 1 bit (output, stop)
in_dval 1 bit (input, data valid)
wh_out is defined as:
out_data 64 bit (output)
out_stop 1 bit (input)
out_dval 1 bit (output)
You can check what wormholes are made from using the "Wormholes Editor" tab in the main GUI. Simulating/Chipscope the reference design might help understanding what the sequencing looks like.
Best Regards,
Arnaud