ARM SoCs need a way to reserve IOMMU regions. Some address ranges used by devices sitting behind IOMMU are treated specially. To prevent these ranges from getting mapped in IOVA space, use the existing framework and code to reserve the ranges using DT properties.
This patch set is created against 4.15-rc7. Jitendra Bhivare (5): dt-bindings: iommu: Add reserved-dma-region for IOMMU device dt-bindings: brcm: Add reserved-dma-region for iPROC dt-bindings: arm-smmu: Add reserved-msi-region iommu/of: Reserve IOMMU DMA regions using DT iommu/arm-smmu: Allow direct mapping for MSI region .../devicetree/bindings/iommu/arm,smmu.txt | 12 +++ Documentation/devicetree/bindings/iommu/iommu.txt | 17 ++++ .../devicetree/bindings/pci/brcm,iproc-pcie.txt | 3 + drivers/iommu/arm-smmu.c | 14 ++- drivers/iommu/dma-iommu.c | 6 ++ drivers/iommu/of_iommu.c | 100 +++++++++++---------- include/linux/iommu.h | 3 + include/linux/of_iommu.h | 25 ++++-- 8 files changed, 126 insertions(+), 54 deletions(-) -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
