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    SubjectRe: [PATCH V5 RESEND 0/3] Add iommu support for hi6220 HiKey board
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    On 2015/11/27 19:49, Joerg Roedel wrote:
    > 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.
    >

    ok, I will change this to dma-api. Since v1 version, the dma-api was not ok for arm64.
    I will do this with dma-api function.
    >
    > Joerg
    >
    >
    > .
    >



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