From mboxrd@z Thu Jan 1 00:00:00 1970 From: hanjun.guo@linaro.org (Hanjun Guo) Date: Wed, 30 Nov 2016 11:26:38 +0800 Subject: [PATCH v9 16/16] drivers: acpi: iort: introduce iort_iommu_configure In-Reply-To: <20161121100148.24769-17-lorenzo.pieralisi@arm.com> References: <20161121100148.24769-1-lorenzo.pieralisi@arm.com> <20161121100148.24769-17-lorenzo.pieralisi@arm.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > Acked-by: Rafael J. Wysocki [ACPI core] > Reviewed-by: Tomasz Nowicki > Tested-by: Hanjun Guo > Tested-by: Tomasz Nowicki > Cc: Hanjun Guo Acked-by: Hanjun Guo Thanks Hanjun