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- # IOMMU_API always gets selected by whoever wants it.
- config IOMMU_API
- bool
- # MSM IOMMU support
- config MSM_IOMMU
- bool "MSM IOMMU Support"
- depends on ARCH_MSM8X60 || ARCH_MSM8960
- select IOMMU_API
- help
- Support for the IOMMUs found on certain Qualcomm SOCs.
- These IOMMUs allow virtualization of the address space used by most
- cores within the multimedia subsystem.
- If unsure, say N here.
- config IOMMU_PGTABLES_L2
- def_bool y
- depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n
- # AMD IOMMU support
- config AMD_IOMMU
- bool "AMD IOMMU support"
- select SWIOTLB
- select PCI_MSI
- select PCI_IOV
- select IOMMU_API
- depends on X86_64 && PCI && ACPI
- ---help---
- With this option you can enable support for AMD IOMMU hardware in
- your system. An IOMMU is a hardware component which provides
- remapping of DMA memory accesses from devices. With an AMD IOMMU you
- can isolate the the DMA memory of different devices and protect the
- system from misbehaving device drivers or hardware.
- You can find out if your system has an AMD IOMMU if you look into
- your BIOS for an option to enable it or if you have an IVRS ACPI
- table.
- config AMD_IOMMU_STATS
- bool "Export AMD IOMMU statistics to debugfs"
- depends on AMD_IOMMU
- select DEBUG_FS
- ---help---
- This option enables code in the AMD IOMMU driver to collect various
- statistics about whats happening in the driver and exports that
- information to userspace via debugfs.
- If unsure, say N.
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