From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dma-mapping: highbank: Restrict DMA to 32-bit addresses
Date: Thu, 1 Aug 2013 21:45:52 +0100 [thread overview]
Message-ID: <20130801204552.GI23006@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20130801204047.GY20842@alberich>
On Thu, Aug 01, 2013 at 10:40:47PM +0200, Andreas Herrmann wrote:
>
> Some devices on Calxeda ECX-2000 are restricted to 32-bit DMA. Thus
> the platform needs to set dma_zone_size, otherwise dma-mapping code is
> complaining, e.g.
>
> calxedaxgmac fff50000.ethernet: coherent DMA mask 0xffffffff is smaller than system
> GFP_DMA mask 0xffffffffffffffff
>
> Same is true for sata_highbank. For the latter dma_coherent_mask could
> be increased but due to the lack of DMA32 zone we need to adapt
> arm_dma_limit in general.
Please wait until I post my dma mask patches. Thanks.
prev parent reply other threads:[~2013-08-01 20:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-01 20:40 [PATCH] ARM: dma-mapping: highbank: Restrict DMA to 32-bit addresses Andreas Herrmann
2013-08-01 20:45 ` Russell King - ARM Linux [this message]
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