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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Date: Wed, 20 May 2009 07:56:42 +1000
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Cc: Becky Bruce <Becky.Bruce@freescale.com>, Wolfgang Denk <wd@denx.de>,
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On Tue, 2009-05-19 at 13:26 +0200, Piotr Zięcik wrote:
> Tuesday 19 May 2009 00:17:31 Benjamin Herrenschmidt wrote:
> >
> > We are close to the point where we can make this a runtime option
> > though, by just having a different set of dma_ops hooked in.
> >
> 
> Is somebody currently working on it? If yes, where we can see
> code ?

Well, the current upstream code has the dma ops support. Becky is
massaging that more for swiotlb support which has been submitted to the
linuxppc-dev list. We haven't yet added runtime support rather than
compile time for non-cache coherent platforms, but it's becoming
reasonably easy to add now (though still needs to be done).

Cheers,
Ben