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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2016-11-21 10:01:46 +0000
committerWill Deacon <will.deacon@arm.com>2016-11-29 15:57:47 +0000
commitea50b5245ba8a5862c98556690a6c680e3ba08ca (patch)
treeca67a567fa8a78995a570340ed47039e9412de64 /drivers/acpi/scan.c
parentd6fcd3b149f3eab3b94cc107ca846bea8461cc2f (diff)
ACPI/IORT: Replace rid map type with type mask
IORT tables provide data that allow the kernel to carry out device ID mappings between endpoints and system components (eg interrupt controllers, IOMMUs). When the mapping for a given device ID is carried out, the translation mechanism is done on a per-subsystem basis rather than a component subtype (ie the IOMMU kernel layer will look for mappings from a device to all IORT node types corresponding to IOMMU components), therefore the corresponding mapping API should work on a range (ie mask) of IORT node types corresponding to a common set of components (eg IOMMUs) rather than a specific node type. Upgrade the IORT iort_node_map_rid() API to work with a type mask instead of a single node type so that it can be used for mappings that span multiple components types (ie IOMMUs). Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Tomasz Nowicki <tn@semihalf.com> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Tested-by: Tomasz Nowicki <tn@semihalf.com> Acked-by: Hanjun Guo <hanjun.guo@linaro.org> Cc: Hanjun Guo <hanjun.guo@linaro.org> Cc: Tomasz Nowicki <tn@semihalf.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/acpi/scan.c')
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