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-rw-r--r--drivers/iommu/Kconfig37
1 files changed, 35 insertions, 2 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 689ffe538370..c60395b7470f 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -60,6 +60,27 @@ config IOMMU_IO_PGTABLE_ARMV7S_SELFTEST
endmenu
+config IOMMU_DEBUGFS
+ bool "Export IOMMU internals in DebugFS"
+ depends on DEBUG_FS
+ help
+ Allows exposure of IOMMU device internals. This option enables
+ the use of debugfs by IOMMU drivers as required. Devices can,
+ at initialization time, cause the IOMMU code to create a top-level
+ debug/iommu directory, and then populate a subdirectory with
+ entries as required.
+
+config IOMMU_DEFAULT_PASSTHROUGH
+ bool "IOMMU passthrough by default"
+ depends on IOMMU_API
+ help
+ Enable passthrough by default, removing the need to pass in
+ iommu.passthrough=on or iommu=pt through command line. If this
+ is enabled, you can still disable with iommu.passthrough=off
+ or iommu=nopt depending on the architecture.
+
+ If unsure, say N here.
+
config IOMMU_IOVA
tristate
@@ -135,6 +156,18 @@ config AMD_IOMMU_V2
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.
+
# Intel IOMMU support
config DMAR_TABLE
bool
@@ -284,8 +317,8 @@ config IPMMU_VMSA
select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU
help
- Support for the Renesas VMSA-compatible IPMMU Renesas found in the
- R-Mobile APE6 and R-Car H2/M2 SoCs.
+ Support for the Renesas VMSA-compatible IPMMU found in the R-Mobile
+ APE6, R-Car Gen2, and R-Car Gen3 SoCs.
If unsure, say N.