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Date: Wed, 16 Nov 2016 01:56:35 +0100 From: "Rafael J. Wysocki" <rafael@...nel.org> To: Lorenzo Pieralisi <lorenzo.pieralisi@....com> Cc: "open list:AMD IOMMU (AMD-VI)" <iommu@...ts.linux-foundation.org>, Hanjun Guo <hanjun.guo@...aro.org>, Tomasz Nowicki <tn@...ihalf.com>, "Rafael J. Wysocki" <rjw@...ysocki.net>, Will Deacon <will.deacon@....com>, Marc Zyngier <marc.zyngier@....com>, Robin Murphy <robin.murphy@....com>, Joerg Roedel <joro@...tes.org>, Jon Masters <jcm@...hat.com>, Eric Auger <eric.auger@...hat.com>, Sinan Kaya <okaya@...eaurora.org>, Nate Watterson <nwatters@...eaurora.org>, Prem Mallappa <prem.mallappa@...adcom.com>, Dennis Chen <dennis.chen@....com>, ACPI Devel Maling List <linux-acpi@...r.kernel.org>, Linux PCI <linux-pci@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org> Subject: Re: [PATCH v7 16/16] drivers: acpi: iort: introduce iort_iommu_configure On Wed, Nov 9, 2016 at 3:19 PM, Lorenzo Pieralisi <lorenzo.pieralisi@....com> 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@....com> > Tested-by: Hanjun Guo <hanjun.guo@...aro.org> > Tested-by: Tomasz Nowicki <tn@...ihalf.com> > Cc: Hanjun Guo <hanjun.guo@...aro.org> > Cc: Tomasz Nowicki <tn@...ihalf.com> > Cc: "Rafael J. Wysocki" <rjw@...ysocki.net> For the ACPI core part: Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
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