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Re: [PATCH v9 16/16] drivers: acpi: iort: introduce iort_iommu_configure

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  Re: [PATCH v9 16/16] drivers: acpi: iort: introduce  iort_iommu_configure Hanjun Guo <hanjun.guo@linaro.org> - 2016-11-30 04:30 +0100

#1532934 — Re: [PATCH v9 16/16] drivers: acpi: iort: introduce iort_iommu_configure

On 2016/11/21 18:01, Lorenzo Pieralisi wrote:
> DT based systems have a generic kernel API to configure IOMMUs
> for devices (ie of_iommu_configure()).
>
> On ARM based ACPI systems, the of_iommu_configure() equivalent can
> be implemented atop ACPI IORT kernel API, with the corresponding
> functions to map device identifiers to IOMMUs and retrieve the
> corresponding IOMMU operations necessary for DMA operations set-up.
>
> By relying on the iommu_fwspec generic kernel infrastructure,
> implement the IORT based IOMMU configuration for ARM ACPI systems
> and hook it up in the ACPI kernel layer that implements DMA
> configuration for a device.
>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [ACPI core]
> Reviewed-by: Tomasz Nowicki <tn@semihalf.com>
> Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
> Tested-by: Tomasz Nowicki <tn@semihalf.com>
> Cc: Hanjun Guo <hanjun.guo@linaro.org>

Acked-by: Hanjun Guo <hanjun.guo@linaro.org>

Thanks
Hanjun

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