linux-kernel - Re: [PATCH] fsldma: use PCI Read Multiple command

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Message-ID: <49F60FE1.90707@freescale.com>
Date:	Mon, 27 Apr 2009 15:04:49 -0500
From:	Timur Tabi <timur@...escale.com>
To:	David Hawkins <dwh@...o.caltech.edu>
CC:	linuxppc-dev@...abs.org, Dan Williams <dan.j.williams@...el.com>,
	Liu Dave-R63238 <DaveLiu@...escale.com>,
	linux-kernel@...r.kernel.org, Ira Snyder <iws@...o.caltech.edu>
Subject: Re: [PATCH] fsldma: use PCI Read Multiple command

David Hawkins wrote:

> Can you give me an example of non-PCI memory that would be
> non-prefetchable that you'd like us to try? We can see if our
> host CPUs have an area like that ... we just need to know
> what device to look for first :)

Hmmmm.... I was going to say any SOC device in the IMMR, but I don't see
anything there that would constitute a memory buffer.

I test this change on an 8610 and DMA to a register I/O, where this bit
isn't even defined, and it made no difference.  So I guess this change
is okay.

Acked-by: Timur Tabi <timur@...escale.com>

-- 
Timur Tabi
Linux kernel developer at Freescale
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