summaryrefslogtreecommitdiffstats
path: root/net/ethernet
diff options
context:
space:
mode:
authorRobin Murphy <robin.murphy@arm.com>2016-09-12 18:13:59 +0200
committerWill Deacon <will.deacon@arm.com>2016-09-16 10:34:22 +0200
commit44bb7e243bd4b4e5c79de2452cd9762582f58925 (patch)
treebf0d949ec860769d523d512dc26b20c9ce26e945 /net/ethernet
parentiommu/arm-smmu: Set domain geometry (diff)
downloadlinux-44bb7e243bd4b4e5c79de2452cd9762582f58925.tar.xz
linux-44bb7e243bd4b4e5c79de2452cd9762582f58925.zip
iommu/dma: Add support for mapping MSIs
When an MSI doorbell is located downstream of an IOMMU, attaching devices to a DMA ops domain and switching on translation leads to a rude shock when their attempt to write to the physical address returned by the irqchip driver faults (or worse, writes into some already-mapped buffer) and no interrupt is forthcoming. Address this by adding a hook for relevant irqchip drivers to call from their compose_msi_msg() callback, to swizzle the physical address with an appropriatly-mapped IOVA for any device attached to one of our DMA ops domains. Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'net/ethernet')
0 files changed, 0 insertions, 0 deletions