Hi Rainer,
All you would have to do is add support for the card and test it in your
setup. After that you can submit the code to be included in Solaris.
Before your changes are incorportaed we will do an internal code review
and testing.
Feel free to contact me if you have more questions.
Back during S10 Platinum Beta, I raised this RFE
http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=4958870
to have bge(7D) support the Broadcom NetXtreme 5901 card which seems to be
popular in some laptops (like my IBM ThinkPad R40e :-). Having used
Broadcom's own bcme(7D)