From mboxrd@z Thu Jan  1 00:00:00 1970
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: Query on I/O accessors used by Xilinx SystemACE Driver
Date: Tue, 22 Jan 2013 09:09:30 +1100
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To: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: Grant Likely <grant.likely@secretlab.ca>, Alexey Brodkin <Alexey.Brodkin@synopsys.com>, "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Michal Simek <monstr@monstr.eu>, Geert Uytterhoeven <geert@linux-m68k.org>

On Mon, 2013-01-21 at 18:50 +0530, Vineet Gupta wrote:
> I'm not an expert in that driver or the specific needs of those accessors on
> respective arches, but was wondering, if it would be possible to convert the
> driver to use the vanilla IO accessors (read{b,w,l}. Microblaze at least,  seem to
> be defining them as straight wrappers over the standard raw accessors.
> 
> Ben, Geert could you please comment ?

If your HW is little-endian, then by all means use the standard accessors, either
readb,w,l or the iomap.h ones (ioread*)

Cheers,
Ben.