diff options
Diffstat (limited to 'drivers/iommu/intel/Kconfig')
| -rw-r--r-- | drivers/iommu/intel/Kconfig | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/drivers/iommu/intel/Kconfig b/drivers/iommu/intel/Kconfig index 43ebd8af11c5..5471f814e073 100644 --- a/drivers/iommu/intel/Kconfig +++ b/drivers/iommu/intel/Kconfig @@ -6,18 +6,26 @@ config DMAR_TABLE config DMAR_PERF bool +config DMAR_DEBUG + bool + config INTEL_IOMMU bool "Support for Intel IOMMU using DMA Remapping Devices" - depends on PCI_MSI && ACPI && (X86 || IA64) - select DMA_OPS + depends on PCI_MSI && ACPI && X86 select IOMMU_API + select GENERIC_PT + select IOMMU_PT + select IOMMU_PT_X86_64 + select IOMMU_PT_VTDSS select IOMMU_IOVA + select IOMMU_IOPF + select IOMMUFD_DRIVER if IOMMUFD select NEED_DMA_MAP_STATE select DMAR_TABLE select SWIOTLB - select IOASID - select IOMMU_DMA select PCI_ATS + select PCI_PRI + select PCI_PASID help DMA remapping (DMAR) devices support enables independent address translations for Direct Memory Access (DMA) from devices. @@ -25,10 +33,13 @@ config INTEL_IOMMU and include PCI device scope covered by these DMA remapping devices. +if INTEL_IOMMU + config INTEL_IOMMU_DEBUGFS bool "Export Intel IOMMU internals in Debugfs" - depends on INTEL_IOMMU && IOMMU_DEBUGFS + depends on IOMMU_DEBUGFS select DMAR_PERF + select DMAR_DEBUG help !!!WARNING!!! @@ -41,40 +52,25 @@ config INTEL_IOMMU_DEBUGFS config INTEL_IOMMU_SVM bool "Support for Shared Virtual Memory with Intel IOMMU" - depends on INTEL_IOMMU && X86_64 - select PCI_PASID - select PCI_PRI + depends on X86_64 select MMU_NOTIFIER - select IOASID - select IOMMU_SVA_LIB + select IOMMU_SVA help Shared Virtual Memory (SVM) provides a facility for devices to access DMA resources through process address space by means of a Process Address Space ID (PASID). config INTEL_IOMMU_DEFAULT_ON - def_bool y - prompt "Enable Intel DMA Remapping Devices by default" - depends on INTEL_IOMMU + bool "Enable Intel DMA Remapping Devices by default" + default y help Selecting this option will enable a DMAR device at boot time if one is found. If this option is not selected, DMAR support can be enabled by passing intel_iommu=on to the kernel. -config INTEL_IOMMU_BROKEN_GFX_WA - bool "Workaround broken graphics drivers (going away soon)" - depends on INTEL_IOMMU && BROKEN && X86 - help - Current Graphics drivers tend to use physical address - for DMA and avoid using DMA APIs. Setting this config - option permits the IOMMU driver to set a unity map for - all the OS-visible memory. Hence the driver can continue - to use physical addresses for DMA, at least until this - option is removed in the 2.6.32 kernel. - config INTEL_IOMMU_FLOPPY_WA def_bool y - depends on INTEL_IOMMU && X86 + depends on X86 && BLK_DEV_FD help Floppy disk drivers are known to bypass DMA API calls thereby failing to work when IOMMU is enabled. This @@ -83,7 +79,7 @@ config INTEL_IOMMU_FLOPPY_WA config INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON bool "Enable Intel IOMMU scalable mode by default" - depends on INTEL_IOMMU + default y help Selecting this option will enable by default the scalable mode if hardware presents the capability. The scalable mode is defined in @@ -92,3 +88,16 @@ config INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not selected, scalable mode support could also be enabled by passing intel_iommu=sm_on to the kernel. If not sure, please use the default value. + +config INTEL_IOMMU_PERF_EVENTS + bool "Intel IOMMU performance events" + default y + depends on INTEL_IOMMU && PERF_EVENTS + help + Selecting this option will enable the performance monitoring + infrastructure in the Intel IOMMU. It collects information about + key events occurring during operation of the remapping hardware, + to aid performance tuning and debug. These are available on modern + processors which support Intel VT-d 4.0 and later. + +endif # INTEL_IOMMU |