From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Subject: Re: DMA mapping API(IOMMU) for ARM64?
Date: Tue, 18 Jun 2013 16:15:27 +0200
Message-ID: <201306181615.27341.arnd@arndb.de>
References: <20130618.053955.305832937374936961.hdoyu@nvidia.com> <20130618.140137.1551430695673122122.hdoyu@nvidia.com> <20130618125054.GL9930@arm.com>
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To: Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>
Cc: Hiroshi Doyu <hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>, Will Deacon <Will.Deacon-5wv7dgnIgG8@public.gmane.org>, "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" <linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>, "linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw@public.gmane.org" <linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw@public.gmane.org>, "iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org" <iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>, "m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org" <m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>, "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
List-Id: linux-tegra@vger.kernel.org

On Tuesday 18 June 2013, Catalin Marinas wrote:
> > 1, Copy arch/arm/mm/dma-mapping.c arch/arm64/mm/dma-mapping.c(+swiotlb)
> > 2, Adapt arch/arm64/mm/dma-mapping.c(+swiotlb) to 64bit compatible.
> > 3, Factor out the common code from them into mm/dma-mapping.c
> 
> Or add the relevant code to something like lib/iommu-helper.c, convert
> arm64 to use that and we can work on converting arm and other
> architectures afterwards.

Yes, that would work too.

	Arnd