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authorWill Deacon <will.deacon@arm.com>2014-05-01 18:05:08 +0100
committerWill Deacon <will.deacon@arm.com>2014-07-03 15:50:21 +0100
commita9a1b0b53d8b7ca60abef0687eae927f286f07c2 (patch)
tree428e91378bf91375047156a8ac707b1eb45f557b /.mailmap
parenta65217a4bcdb654e04fcc42b302d8a15708e14ce (diff)
iommu/arm-smmu: add support for PCI master devices
This patch extends the ARM SMMU driver so that it can handle PCI master devices in addition to platform devices described in the device tree. The driver is informed about the PCI host controller in the DT via a phandle to the host controller in the mmu-masters property. The host controller is then added to the master tree for that SMMU, just like a normal master (although it probably doesn't advertise any StreamIDs). When a device is added to the PCI bus, we set the archdata.iommu pointer for that device to describe its StreamID (actually its RequesterID for the moment). This allows us to re-use our existing data structures using the host controller of_node for everything apart from StreamID configuration, where we reach into the archdata for the information we require. Cc: Varun Sethi <varun.sethi@freescale.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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