linux-kernel - Re: [RFC 3/3] iommu: dma-iommu: use common implementation also on ARM architecture

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Date:	Mon, 18 Apr 2016 10:20:46 +0800
From:	Mark yao <mark.yao@...k-chips.com>
To:	Marek Szyprowski <m.szyprowski@...sung.com>,
	iommu@...ts.linux-foundation.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
CC:	linaro-mm-sig@...ts.linaro.org, dri-devel@...ts.freedesktop.org,
	Arnd Bergmann <arnd@...db.de>,
	Will Deacon <will.deacon@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Robin Murphy <robin.murphy@....com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Joerg Roedel <joro@...tes.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Sakari Ailus <sakari.ailus@....fi>,
	Heiko Stuebner <heiko@...ech.de>,
	Tomasz Figa <tfiga@...omium.org>,
	Inki Dae <inki.dae@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: Re: [RFC 3/3] iommu: dma-iommu: use common implementation also on
 ARM architecture

On 2016年02月19日 16:22, Marek Szyprowski wrote:
> This patch replaces ARM-specific IOMMU-based DMA-mapping implementation
> with generic IOMMU DMA-mapping code shared with ARM64 architecture. The
> side-effect of this change is a switch from bitmap-based IO address space
> management to tree-based code. There should be no functional changes
> for drivers, which rely on initialization from generic arch_setup_dna_ops()
> interface. Code, which used old arm_iommu_* functions must be updated to
> new interface.
>
> Signed-off-by: Marek Szyprowski<m.szyprowski@...sung.com>
IOMMU works good on drm/rockchip ARM64 platform with this patch. So

Tested-by: Mark Yao <mark.yao@...k-chips.com>

Thanks.

-- 
Ｍark Yao