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| author | Jerry Snitselaar <jsnitsel@redhat.com> | 2020-06-30 13:06:36 -0700 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-07-29 14:15:36 +0200 |
| commit | cbe94c6e1a7d11050050c4d5b89bb278c163e8d6 (patch) | |
| tree | ca7780e8d870c0eb63052b8507fd90f13b0d9223 /drivers/iommu/amd/Kconfig | |
| parent | ab65ba57e3acb55920999f96a6152228b52a2f49 (diff) | |
| download | lwn-cbe94c6e1a7d11050050c4d5b89bb278c163e8d6.tar.gz lwn-cbe94c6e1a7d11050050c4d5b89bb278c163e8d6.zip | |
iommu/amd: Move Kconfig and Makefile bits down into amd directory
Move AMD Kconfig and Makefile bits down into the amd directory
with the rest of the AMD specific files.
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20200630200636.48600-3-jsnitsel@redhat.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd/Kconfig')
| -rw-r--r-- | drivers/iommu/amd/Kconfig | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/iommu/amd/Kconfig b/drivers/iommu/amd/Kconfig new file mode 100644 index 000000000000..1f061d91e0b8 --- /dev/null +++ b/drivers/iommu/amd/Kconfig @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: GPL-2.0-only +# AMD IOMMU support +config AMD_IOMMU + bool "AMD IOMMU support" + select SWIOTLB + select PCI_MSI + select PCI_ATS + select PCI_PRI + select PCI_PASID + select IOMMU_API + select IOMMU_IOVA + select IOMMU_DMA + 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 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_V2 + tristate "AMD IOMMU Version 2 driver" + depends on AMD_IOMMU + select MMU_NOTIFIER + help + This option enables support for the AMD IOMMUv2 features of the IOMMU + hardware. Select this option if you want to use devices that support + the PCI PRI and PASID interface. + +config AMD_IOMMU_DEBUGFS + bool "Enable AMD IOMMU internals in DebugFS" + depends on AMD_IOMMU && IOMMU_DEBUGFS + help + !!!WARNING!!! !!!WARNING!!! !!!WARNING!!! !!!WARNING!!! + + DO NOT ENABLE THIS OPTION UNLESS YOU REALLY, -REALLY- KNOW WHAT YOU ARE DOING!!! + Exposes AMD IOMMU device internals in DebugFS. + + This option is -NOT- intended for production environments, and should + not generally be enabled. |