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Date: Wed, 01 Feb 2006 10:04:15 -0800
From: David Hawkins <dwh@ovro.caltech.edu>
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To: Matt Porter <mporter@kernel.crashing.org>
Subject: Re: Yosemite/440EP why are readl()/ioread32() setup to
	readlittle-endian?
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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