diff options
Diffstat (limited to 'drivers/iommu/Kconfig')
| -rw-r--r-- | drivers/iommu/Kconfig | 365 |
1 files changed, 158 insertions, 207 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index d9a25715650e..99095645134f 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -1,12 +1,21 @@ +# SPDX-License-Identifier: GPL-2.0-only +# The IOVA library may also be used by non-IOMMU_API users +config IOMMU_IOVA + tristate + # IOMMU_API always gets selected by whoever wants it. config IOMMU_API bool +config IOMMUFD_DRIVER + bool + default n + menuconfig IOMMU_SUPPORT bool "IOMMU Hardware Support" depends on MMU default y - ---help--- + help Say Y here if you want to compile device drivers for IO Memory Management Units into the kernel. These devices usually allow to remap DMA requests and/or remap interrupts from other devices on the @@ -23,19 +32,21 @@ config IOMMU_IO_PGTABLE config IOMMU_IO_PGTABLE_LPAE bool "ARMv7/v8 Long Descriptor Format" select IOMMU_IO_PGTABLE - depends on ARM || ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64) + depends on ARM || ARM64 || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for cmpxchg64() help Enable support for the ARM long descriptor pagetable format. This allocator supports 4K/2M/1G, 16K/32M and 64K/512M page sizes at both stage-1 and stage-2, as well as address spaces up to 48-bits in size. -config IOMMU_IO_PGTABLE_LPAE_SELFTEST - bool "LPAE selftests" - depends on IOMMU_IO_PGTABLE_LPAE +config IOMMU_IO_PGTABLE_LPAE_KUNIT_TEST + tristate "KUnit tests for LPAE" + depends on IOMMU_IO_PGTABLE_LPAE && KUNIT + default KUNIT_ALL_TESTS help - Enable self-tests for LPAE page table allocator. This performs - a series of page-table consistency checks during boot. + Enable kunit tests for LPAE page table allocator. This performs + a series of page-table consistency checks. If unsure, say N here. @@ -58,6 +69,18 @@ config IOMMU_IO_PGTABLE_ARMV7S_SELFTEST If unsure, say N here. +config IOMMU_IO_PGTABLE_DART + bool "Apple DART Formats" + select IOMMU_IO_PGTABLE + depends on ARM64 || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for cmpxchg64() + help + Enable support for the Apple DART pagetable formats. These include + the t8020 and t6000/t8110 DART formats used in Apple M1/M2 family + SoCs. + + If unsure, say N here. + endmenu config IOMMU_DEBUGFS @@ -70,30 +93,78 @@ config IOMMU_DEBUGFS debug/iommu directory, and then populate a subdirectory with entries as required. -config IOMMU_DEFAULT_PASSTHROUGH - bool "IOMMU passthrough by default" +choice + prompt "IOMMU default domain type" 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. + default IOMMU_DEFAULT_DMA_LAZY if X86 || S390 + default IOMMU_DEFAULT_DMA_STRICT + help + Choose the type of IOMMU domain used to manage DMA API usage by + device drivers. The options here typically represent different + levels of tradeoff between robustness/security and performance, + depending on the IOMMU driver. Not all IOMMUs support all options. + This choice can be overridden at boot via the command line, and for + some devices also at runtime via sysfs. - If unsure, say N here. + If unsure, keep the default. -config IOMMU_IOVA - tristate +config IOMMU_DEFAULT_DMA_STRICT + bool "Translated - Strict" + help + Trusted devices use translation to restrict their access to only + DMA-mapped pages, with strict TLB invalidation on unmap. Equivalent + to passing "iommu.passthrough=0 iommu.strict=1" on the command line. + + Untrusted devices always use this mode, with an additional layer of + bounce-buffering such that they cannot gain access to any unrelated + data within a mapped page. + +config IOMMU_DEFAULT_DMA_LAZY + bool "Translated - Lazy" + help + Trusted devices use translation to restrict their access to only + DMA-mapped pages, but with "lazy" batched TLB invalidation. This + mode allows higher performance with some IOMMUs due to reduced TLB + flushing, but at the cost of reduced isolation since devices may be + able to access memory for some time after it has been unmapped. + Equivalent to passing "iommu.passthrough=0 iommu.strict=0" on the + command line. + + If this mode is not supported by the IOMMU driver, the effective + runtime default will fall back to IOMMU_DEFAULT_DMA_STRICT. + +config IOMMU_DEFAULT_PASSTHROUGH + bool "Passthrough" + help + Trusted devices are identity-mapped, giving them unrestricted access + to memory with minimal performance overhead. Equivalent to passing + "iommu.passthrough=1" (historically "iommu=pt") on the command line. + + If this mode is not supported by the IOMMU driver, the effective + runtime default will fall back to IOMMU_DEFAULT_DMA_STRICT. + +endchoice config OF_IOMMU - def_bool y - depends on OF && IOMMU_API + def_bool y + depends on OF && IOMMU_API # IOMMU-agnostic DMA-mapping layer config IOMMU_DMA - bool + def_bool ARM64 || X86 || S390 + select DMA_OPS_HELPERS select IOMMU_API select IOMMU_IOVA select NEED_SG_DMA_LENGTH + select NEED_SG_DMA_FLAGS if SWIOTLB + +# Shared Virtual Addressing +config IOMMU_SVA + select IOMMU_MM_DATA + bool + +config IOMMU_IOPF + bool config FSL_PAMU bool "Freescale IOMMU support" @@ -111,7 +182,7 @@ config FSL_PAMU config MSM_IOMMU bool "MSM IOMMU Support" depends on ARM - depends on ARCH_MSM8X60 || ARCH_MSM8960 || COMPILE_TEST + depends on ARCH_QCOM || COMPILE_TEST select IOMMU_API select IOMMU_IO_PGTABLE_ARMV7S help @@ -121,128 +192,17 @@ config MSM_IOMMU 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_ATS - select PCI_PRI - select PCI_PASID - select IOMMU_API - select IOMMU_IOVA - 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. - -# Intel IOMMU support -config DMAR_TABLE - bool - -config INTEL_IOMMU - bool "Support for Intel IOMMU using DMA Remapping Devices" - depends on PCI_MSI && ACPI && (X86 || IA64_GENERIC) - select IOMMU_API - select IOMMU_IOVA - select NEED_DMA_MAP_STATE - select DMAR_TABLE - help - DMA remapping (DMAR) devices support enables independent address - translations for Direct Memory Access (DMA) from devices. - These DMA remapping devices are reported via ACPI tables - and include PCI device scope covered by these DMA - remapping devices. - -config INTEL_IOMMU_DEBUGFS - bool "Export Intel IOMMU internals in Debugfs" - depends on INTEL_IOMMU && IOMMU_DEBUGFS - help - !!!WARNING!!! - - DO NOT ENABLE THIS OPTION UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!!! - - Expose Intel IOMMU internals in Debugfs. - - This option is -NOT- intended for production environments, and should - only be enabled for debugging Intel IOMMU. - -config INTEL_IOMMU_SVM - bool "Support for Shared Virtual Memory with Intel IOMMU" - depends on INTEL_IOMMU && X86 - select PCI_PASID - select MMU_NOTIFIER - 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 - 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 - ---help--- - Floppy disk drivers are known to bypass DMA API calls - thereby failing to work when IOMMU is enabled. This - workaround will setup a 1:1 mapping for the first - 16MiB to make floppy (an ISA device) work. +source "drivers/iommu/amd/Kconfig" +source "drivers/iommu/arm/Kconfig" +source "drivers/iommu/intel/Kconfig" +source "drivers/iommu/iommufd/Kconfig" +source "drivers/iommu/riscv/Kconfig" config IRQ_REMAP bool "Support for Interrupt Remapping" depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI - select DMAR_TABLE - ---help--- + select IRQ_MSI_LIB + help Supports Interrupt remapping for IO-APIC and MSI devices. To use x2apic mode in the CPU's which support x2APIC enhancements or to support platforms with CPU's having > 8 bit APIC ID, say Y. @@ -250,17 +210,16 @@ config IRQ_REMAP # OMAP IOMMU support config OMAP_IOMMU bool "OMAP IOMMU Support" - depends on ARM && MMU depends on ARCH_OMAP2PLUS || COMPILE_TEST select IOMMU_API - ---help--- + help The OMAP3 media platform drivers depend on iommu support, if you need them say Y here. config OMAP_IOMMU_DEBUG bool "Export OMAP IOMMU internals in DebugFS" depends on OMAP_IOMMU && DEBUG_FS - ---help--- + help Select this to see extensive information about the internal state of OMAP IOMMU in debugfs. @@ -268,7 +227,6 @@ config OMAP_IOMMU_DEBUG config ROCKCHIP_IOMMU bool "Rockchip IOMMU Support" - depends on ARM || ARM64 depends on ARCH_ROCKCHIP || COMPILE_TEST select IOMMU_API select ARM_DMA_USE_IOMMU @@ -279,19 +237,18 @@ config ROCKCHIP_IOMMU Say Y here if you are using a Rockchip SoC that includes an IOMMU device. -config TEGRA_IOMMU_GART - bool "Tegra GART IOMMU Support" - depends on ARCH_TEGRA_2x_SOC +config SUN50I_IOMMU + bool "Allwinner H6 IOMMU Support" + depends on HAS_DMA + depends on ARCH_SUNXI || COMPILE_TEST + select ARM_DMA_USE_IOMMU select IOMMU_API help - Enables support for remapping discontiguous physical memory - shared with the operating system into contiguous I/O virtual - space through the GART (Graphics Address Relocation Table) - hardware included on Tegra SoCs. + Support for the IOMMU introduced in the Allwinner H6 SoCs. config TEGRA_IOMMU_SMMU bool "NVIDIA Tegra SMMU Support" - depends on ARCH_TEGRA + depends on ARCH_TEGRA || COMPILE_TEST depends on TEGRA_AHB depends on TEGRA_MC select IOMMU_API @@ -301,7 +258,7 @@ config TEGRA_IOMMU_SMMU config EXYNOS_IOMMU bool "Exynos IOMMU Support" - depends on ARCH_EXYNOS && MMU + depends on ARCH_EXYNOS || COMPILE_TEST depends on !CPU_BIG_ENDIAN # revisit driver if we can enable big-endian ptes select IOMMU_API select ARM_DMA_USE_IOMMU @@ -324,14 +281,15 @@ config EXYNOS_IOMMU_DEBUG config IPMMU_VMSA bool "Renesas VMSA-compatible IPMMU" - depends on ARM || IOMMU_DMA - depends on ARCH_RENESAS || (COMPILE_TEST && !GENERIC_ATOMIC64) + depends on ARCH_RENESAS || COMPILE_TEST + depends on ARM || ARM64 || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_LPAE select IOMMU_API select IOMMU_IO_PGTABLE_LPAE select ARM_DMA_USE_IOMMU help Support for the Renesas VMSA-compatible IPMMU found in the R-Mobile - APE6, R-Car Gen2, and R-Car Gen3 SoCs. + APE6, R-Car Gen{2,3} and RZ/G{1,2} SoCs. If unsure, say N. @@ -343,32 +301,19 @@ config SPAPR_TCE_IOMMU Enables bits of IOMMU API required by VFIO. The iommu_ops is not implemented as it is not necessary for VFIO. -# ARM IOMMU support -config ARM_SMMU - bool "ARM Ltd. System MMU (SMMU) Support" - depends on (ARM64 || ARM) && MMU +config APPLE_DART + tristate "Apple DART IOMMU Support" + depends on ARCH_APPLE || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_DART select IOMMU_API - select IOMMU_IO_PGTABLE_LPAE - select ARM_DMA_USE_IOMMU if ARM + select IOMMU_IO_PGTABLE_DART help - Support for implementations of the ARM System MMU architecture - versions 1 and 2. + Support for Apple DART (Device Address Resolution Table) IOMMUs + found in Apple ARM SoCs like the M1. + This IOMMU is required for most peripherals using DMA to access + the main memory. - Say Y here if your SoC includes an IOMMU device implementing - the ARM SMMU architecture. - -config ARM_SMMU_V3 - bool "ARM Ltd. System MMU Version 3 (SMMUv3) Support" - depends on ARM64 - select IOMMU_API - select IOMMU_IO_PGTABLE_LPAE - select GENERIC_MSI_IRQ_DOMAIN - help - Support for implementations of the ARM System MMU architecture - version 3 providing translation support to a PCIe root complex. - - Say Y here if your system includes an IOMMU device implementing - the ARM SMMUv3 architecture. + Say Y here if you are using an Apple SoC. config S390_IOMMU def_bool y if S390 && PCI @@ -377,29 +322,11 @@ config S390_IOMMU help Support for the IOMMU API for s390 PCI devices. -config S390_CCW_IOMMU - bool "S390 CCW IOMMU Support" - depends on S390 && CCW - select IOMMU_API - help - Enables bits of IOMMU API required by VFIO. The iommu_ops - is not implemented as it is not necessary for VFIO. - -config S390_AP_IOMMU - bool "S390 AP IOMMU Support" - depends on S390 && ZCRYPT - select IOMMU_API - help - Enables bits of IOMMU API required by VFIO. The iommu_ops - is not implemented as it is not necessary for VFIO. - config MTK_IOMMU - bool "MTK IOMMU Support" - depends on ARM || ARM64 + tristate "MediaTek IOMMU Support" depends on ARCH_MEDIATEK || COMPILE_TEST select ARM_DMA_USE_IOMMU select IOMMU_API - select IOMMU_DMA select IOMMU_IO_PGTABLE_ARMV7S select MEMORY select MTK_SMI @@ -411,9 +338,8 @@ config MTK_IOMMU If unsure, say N here. config MTK_IOMMU_V1 - bool "MTK IOMMU Version 1 (M4U gen1) Support" - depends on ARM - depends on ARCH_MEDIATEK || COMPILE_TEST + tristate "MediaTek IOMMU Version 1 (M4U gen1) Support" + depends on (ARCH_MEDIATEK && ARM) || COMPILE_TEST select ARM_DMA_USE_IOMMU select IOMMU_API select MEMORY @@ -425,14 +351,39 @@ config MTK_IOMMU_V1 if unsure, say N here. -config QCOM_IOMMU - # Note: iommu drivers cannot (yet?) be built as modules - bool "Qualcomm IOMMU Support" - depends on ARCH_QCOM || (COMPILE_TEST && !GENERIC_ATOMIC64) +config HYPERV_IOMMU + bool "Hyper-V IRQ Handling" + depends on HYPERV && X86 + select IOMMU_API + default HYPERV + help + Stub IOMMU driver to handle IRQs to support Hyper-V Linux + guest and root partitions. + +config VIRTIO_IOMMU + tristate "Virtio IOMMU driver" + depends on VIRTIO + depends on (ARM64 || X86) + select IOMMU_API + select INTERVAL_TREE + select ACPI_VIOT if ACPI + help + Para-virtualised IOMMU driver with virtio. + + Say Y here if you intend to run this kernel as a guest. + +config SPRD_IOMMU + tristate "Unisoc IOMMU Support" + depends on ARCH_SPRD || COMPILE_TEST select IOMMU_API - select IOMMU_IO_PGTABLE_LPAE - select ARM_DMA_USE_IOMMU help - Support for IOMMU on certain Qualcomm SoCs. + Support for IOMMU on Unisoc's SoCs, this IOMMU can be used by + Unisoc's multimedia devices, such as display, Image codec(jpeg) + and a few signal processors, including VSP(video), GSP(graphic), + ISP(image), and CPP(camera pixel processor), etc. + + Say Y here if you want to use the multimedia devices listed above. endif # IOMMU_SUPPORT + +source "drivers/iommu/generic_pt/Kconfig" |