> >That's not possible with substantially rewriting some of the drivers,
> >though.  the current ntion of "machine-independent" ISA drivers is
> >complete crap.  the drivers in dev/isa are drivers that _could be_
> >made MI, really.
> 
> Is there any ISA DMA code that CAN be shared, or should all the code
> become specific (with some duplication) machine + bus sections?

most of the code that deals with "motherboard dma," i.e. not
bus-mastered, should be shareable.

the need for machine-specific stuff comes when you're mapping regions
for dma and unmapping them later (doing bounce-buffer handling while
you do that).  


chris