On Wed, Nov 9, 2016 at 3:19 PM, Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> 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@xxxxxxx> > Tested-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> > Tested-by: Tomasz Nowicki <tn@xxxxxxxxxxxx> > Cc: Hanjun Guo <hanjun.guo@xxxxxxxxxx> > Cc: Tomasz Nowicki <tn@xxxxxxxxxxxx> > Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx> For the ACPI core part: Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
