Re: [RFC] I/O Access Abstractions

Alan Cox
2001-07-02T16:27:00Z

> dhowells@redhat.com said:
> > I think the second #define should be:
> > #define res_readb(res, adr) readb(res->start+adr)
> > for consistency.
>
> You're right that it should be consistent. But it doesn't really matter
> whether we pass an offset within the resource, or whether we continue to

The question I think being ignored here is. Why not leave things as is. The
multiple bus stuff is a port specific detail hidden behind readb() and friends.

On the HP PA32 its already hiding controller number encodings and generating
multiple cycles under spinlocks for PCI I/O space and the devices dont know
about it