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author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2016-11-21 10:01:48 +0000 |
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committer | Will Deacon <will.deacon@arm.com> | 2016-11-29 15:57:48 +0000 |
commit | 643b8e4d86f8b1a62cf5cd9ea221e9bc0d531d18 (patch) | |
tree | 6711969d45ce0d326661f023074db753657f472d /arch | |
parent | 618f535a60623c9e7c596b208a57bf094766b9f6 (diff) | |
download | linux-643b8e4d86f8b1a62cf5cd9ea221e9bc0d531d18.tar.bz2 |
ACPI/IORT: Introduce iort_iommu_configure
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@arm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [ACPI core]
Reviewed-by: Tomasz Nowicki <tn@semihalf.com>
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Tested-by: Tomasz Nowicki <tn@semihalf.com>
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 'arch')
0 files changed, 0 insertions, 0 deletions