From mboxrd@z Thu Jan 1 00:00:00 1970 From: hanjun.guo@linaro.org (Hanjun Guo) Date: Tue, 29 Nov 2016 20:29:16 +0800 Subject: [PATCH v9 14/16] drivers: acpi: iort: replace rid map type with type mask In-Reply-To: <20161121100148.24769-15-lorenzo.pieralisi@arm.com> References: <20161121100148.24769-1-lorenzo.pieralisi@arm.com> <20161121100148.24769-15-lorenzo.pieralisi@arm.com> Message-ID: <300db741-2ad9-3a44-13b3-03980ce3713c@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 2016/11/21 18:01, Lorenzo Pieralisi wrote: > 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 > Reviewed-by: Tomasz Nowicki > Tested-by: Hanjun Guo > Tested-by: Tomasz Nowicki > Cc: Hanjun Guo > Cc: Tomasz Nowicki > Cc: "Rafael J. Wysocki" > --- > drivers/acpi/arm64/iort.c | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) Acked-by: Hanjun Guo Thanks Hanjun