From: Arjan van de Ven <arjan@infradead.org>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: dma_alloc_coherent() on PPC32: physical addresses above 2G possible?
Date: Sun, 20 Jul 2008 11:43:58 -0700 [thread overview]
Message-ID: <20080720114358.6c88e048@infradead.org> (raw)
In-Reply-To: <488385A7.4010509@s5r6.in-berlin.de>
On Sun, 20 Jul 2008 20:36:23 +0200
Stefan Richter <stefanr@s5r6.in-berlin.de> wrote:
> PS: I don't want to set the DMA mask of this device to
> DMA_31BIT_MASK because that would be detrimental to other functions
> of the device. It's a TI TSB43AB22A FireWire controller.
Hi,
just want to mention that you can set the coherent mask separately from
the generic mask... is that sufficient for your load?
(you can even set it just for this allocation..)
--
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next prev parent reply other threads:[~2008-07-20 18:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-20 18:36 dma_alloc_coherent() on PPC32: physical addresses above 2G possible? Stefan Richter
2008-07-20 18:43 ` Arjan van de Ven [this message]
2008-07-20 19:25 ` Stefan Richter
2008-07-20 19:39 ` Arjan van de Ven
2008-07-20 20:11 ` Stefan Richter
2008-07-20 19:48 ` Arjan van de Ven
2008-07-20 21:35 ` Benjamin Herrenschmidt
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