Excerpts from netbsd: 18-Aug-97 Re: bus.h style question "Gordon W.
Ross"@mc.com (880)

> Not only ISA bridges on big-endian processors present this problem.
> Look at the Sun "ie" board (Intel Ethernet on VME).  It is a 16-bit
> VME board with its VME interface hard-wired to do byte swaps.

I have to deal with a similar problem here: The Dolphin PCI-SCI
adapter. The chip was designed for SBUS first, and it needs all data
byte-swapped.
This is exotic however, and not enough reason to bloat the bus.h
interface for imho.
I thought about options to the bus space mapping functions at some
time. It's hard to find a sufficient abstraction for all the swapping
possibilities.

best regards
Matthias