Re: [PATCH V5 RESEND 0/3] Add iommu support for hi6220 HiKey board

[Joerg Roedel]

On Fri, Nov 20, 2015 at 10:25:06AM +0800, Chen Feng wrote:
> eg:
> struct iommu_domain *domain = iommu_domain_alloc(bus);
> iommu_attach_device(domain, dev);
> struct iova_domain *iovad = (struct iova_domain *)m_dev->archdata.iommu;
> struct iova * t_iova = alloc_iova(iovad, size, limit_pfn, align);
> iommu_map(domain, t_iova->pfn_lo << 12, phy_addr, size, port);

Any reason the media subsystem should use the iommu-api directly, and
not the dma-api? You can make your iommu available by adapting the
common dma-iommu implementation from Robin Murphy to your iommu to make
it usable through the dma-api.


	Joerg

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