In my examinations thus far, I've noticed that the only port which uses 
the actual MIPS bus_space implementation appears to be evbmips.

This bus_space implementation is busted wrt little endian busses (PCI) 
when the host processor is running Big Endian, at least as far as I can 
tell.

Anyone using PCI on a big-endian malta?  With an IDE controller or a 
wi(4) on the PCI bus?

I'm inclined to just fix the mips bus_space implementation to support 
the stream options, but before I did that I wanted to poll to see if 
this was likely to affect anyone in some bad way that I couldn't see.  
If it is, please let me know.

Otherwise I expect I'll be submitting patches for this shortly.

    -- Garrett