iirc this controller uses DMA and the sparc fd driver doesn't
know about that.  ideally it should use the not-really-existant
MI fd driver but that's not possible right now.  there are some
fdtwos on earlier sparc64 boxes as well.

or so i remember.  there are docs and i'll see if i can find
the right one but i have a myriad of sun docs ;-)


.mrg.