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.pieral...@arm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com> [ACPI core]
Reviewed-by: Tomasz Nowicki <t...@semihalf.com>
Tested-by: Hanjun Guo <hanjun....@linaro.org>
Tested-by: Tomasz Nowicki <t...@semihalf.com>
Cc: Hanjun Guo <hanjun....@linaro.org>
Acked-by: Hanjun Guo <hanjun....@linaro.org>
Thanks
Hanjun
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