From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Martin Michlmayr <tbm@cyrius.com>
Cc: Mark E Mason <mark.e.mason@broadcom.com>, linux-mips@linux-mips.org
Subject: Re: BCM91x80A/B PCI DMA problems
Date: Tue, 14 Mar 2006 12:14:12 +0000 [thread overview]
Message-ID: <1142338452.1510.1.camel@localhost.localdomain> (raw)
In-Reply-To: <20060314033439.GP29285@deprecation.cyrius.com>
On Maw, 2006-03-14 at 03:34 +0000, Martin Michlmayr wrote:
> Does this information help? Also, we were wondering how to find out
> whether a driver is okay with 64-bit dma addresses.
All drivers set a PCI DMA mask. If the kernel is not bouncing buffers
and ensuring the buffers are below the 32bit bus address limit by
default then the architecture kernel code needs fixing. The drivers
don't deal with this matter beyond setting their PCI DMA range mask.
Alan
next prev parent reply other threads:[~2006-03-14 11:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-14 2:31 BCM91x80A/B PCI DMA problems Mark E Mason
2006-03-14 3:34 ` Martin Michlmayr
2006-03-14 12:14 ` Alan Cox [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-03-14 22:43 Mark E Mason
2006-03-14 16:55 Mark E Mason
2006-03-14 20:00 ` Alan Cox
2006-03-14 16:46 Mark E Mason
2006-03-14 16:21 Mark E Mason
2006-03-14 16:38 ` Martin Michlmayr
2006-02-28 22:15 Mark E Mason
2006-02-28 23:06 ` Alan Cox
2006-03-13 20:56 ` Martin Michlmayr
2006-02-28 21:53 Mark E Mason
2006-02-28 22:12 ` Martin Michlmayr
2006-02-28 21:46 Martin Michlmayr
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