Matt, In the same vein as the readl()/writel() question, what are the assumptions regarding memcpy_toio and memcpy_fromio?
If the memcpy_to/fromio operations are intended only for access to PCI devices, then they should also inherently perform little-endianness conversion. For the test driver I was working on, I did *not* find this the case, eg. I implemented the test driver read() and write() using the memcpy_to/fromio calls, and the data transfers occur in big-endian (well, 'native' mode, since I also test the same test driver with the PCI adapter in an x86 system). If memcpy_to/fromio can be used in a more general context, then I can see why they operate in native mode. Just looking for enlightenment. Cheers Dave