1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 2bd3c2e66SSakari Ailus# The IOVA library may also be used by non-IOMMU_API users 3bd3c2e66SSakari Ailusconfig IOMMU_IOVA 4bd3c2e66SSakari Ailus tristate 5bd3c2e66SSakari Ailus 6ab493a0fSOhad Ben-Cohen# IOMMU_API always gets selected by whoever wants it. 7ab493a0fSOhad Ben-Cohenconfig IOMMU_API 8ab493a0fSOhad Ben-Cohen bool 9b10f127eSOhad Ben-Cohen 108c9c727bSJoao Martinsconfig IOMMUFD_DRIVER 118c9c727bSJoao Martins bool 128c9c727bSJoao Martins default n 138c9c727bSJoao Martins 1468255b62SJoerg Roedelmenuconfig IOMMU_SUPPORT 1568255b62SJoerg Roedel bool "IOMMU Hardware Support" 16e5144c93SArnd Bergmann depends on MMU 1768255b62SJoerg Roedel default y 18a7f7f624SMasahiro Yamada help 1968255b62SJoerg Roedel Say Y here if you want to compile device drivers for IO Memory 2068255b62SJoerg Roedel Management Units into the kernel. These devices usually allow to 2168255b62SJoerg Roedel remap DMA requests and/or remap interrupts from other devices on the 2268255b62SJoerg Roedel system. 2368255b62SJoerg Roedel 2468255b62SJoerg Roedelif IOMMU_SUPPORT 2568255b62SJoerg Roedel 26fdb1d7beSWill Deaconmenu "Generic IOMMU Pagetable Support" 27fdb1d7beSWill Deacon 28fdb1d7beSWill Deacon# Selected by the actual pagetable implementations 29fdb1d7beSWill Deaconconfig IOMMU_IO_PGTABLE 30fdb1d7beSWill Deacon bool 31fdb1d7beSWill Deacon 32e1d3c0fdSWill Deaconconfig IOMMU_IO_PGTABLE_LPAE 33e1d3c0fdSWill Deacon bool "ARMv7/v8 Long Descriptor Format" 34e1d3c0fdSWill Deacon select IOMMU_IO_PGTABLE 35d286a58bSRobin Murphy depends on ARM || ARM64 || COMPILE_TEST 361b0b5f50SGeert Uytterhoeven depends on !GENERIC_ATOMIC64 # for cmpxchg64() 37e1d3c0fdSWill Deacon help 38e1d3c0fdSWill Deacon Enable support for the ARM long descriptor pagetable format. 39e1d3c0fdSWill Deacon This allocator supports 4K/2M/1G, 16K/32M and 64K/512M page 40e1d3c0fdSWill Deacon sizes at both stage-1 and stage-2, as well as address spaces 41e1d3c0fdSWill Deacon up to 48-bits in size. 42e1d3c0fdSWill Deacon 43fe4b991dSWill Deaconconfig IOMMU_IO_PGTABLE_LPAE_SELFTEST 44fe4b991dSWill Deacon bool "LPAE selftests" 45fe4b991dSWill Deacon depends on IOMMU_IO_PGTABLE_LPAE 46fe4b991dSWill Deacon help 47fe4b991dSWill Deacon Enable self-tests for LPAE page table allocator. This performs 48fe4b991dSWill Deacon a series of page-table consistency checks during boot. 49fe4b991dSWill Deacon 50fe4b991dSWill Deacon If unsure, say N here. 51fe4b991dSWill Deacon 52e5fc9753SRobin Murphyconfig IOMMU_IO_PGTABLE_ARMV7S 53e5fc9753SRobin Murphy bool "ARMv7/v8 Short Descriptor Format" 54e5fc9753SRobin Murphy select IOMMU_IO_PGTABLE 5548e6f765SGeert Uytterhoeven depends on ARM || ARM64 || COMPILE_TEST 56e5fc9753SRobin Murphy help 57e5fc9753SRobin Murphy Enable support for the ARM Short-descriptor pagetable format. 58e5fc9753SRobin Murphy This supports 32-bit virtual and physical addresses mapped using 59e5fc9753SRobin Murphy 2-level tables with 4KB pages/1MB sections, and contiguous entries 60e5fc9753SRobin Murphy for 64KB pages/16MB supersections if indicated by the IOMMU driver. 61e5fc9753SRobin Murphy 62e5fc9753SRobin Murphyconfig IOMMU_IO_PGTABLE_ARMV7S_SELFTEST 63e5fc9753SRobin Murphy bool "ARMv7s selftests" 64e5fc9753SRobin Murphy depends on IOMMU_IO_PGTABLE_ARMV7S 65e5fc9753SRobin Murphy help 66e5fc9753SRobin Murphy Enable self-tests for ARMv7s page table allocator. This performs 67e5fc9753SRobin Murphy a series of page-table consistency checks during boot. 68e5fc9753SRobin Murphy 69e5fc9753SRobin Murphy If unsure, say N here. 70e5fc9753SRobin Murphy 71745ef109SJanne Grunauconfig IOMMU_IO_PGTABLE_DART 72745ef109SJanne Grunau bool "Apple DART Formats" 73745ef109SJanne Grunau select IOMMU_IO_PGTABLE 74d286a58bSRobin Murphy depends on ARM64 || COMPILE_TEST 751b0b5f50SGeert Uytterhoeven depends on !GENERIC_ATOMIC64 # for cmpxchg64() 76745ef109SJanne Grunau help 77745ef109SJanne Grunau Enable support for the Apple DART pagetable formats. These include 78745ef109SJanne Grunau the t8020 and t6000/t8110 DART formats used in Apple M1/M2 family 79745ef109SJanne Grunau SoCs. 80745ef109SJanne Grunau 81745ef109SJanne Grunau If unsure, say N here. 82745ef109SJanne Grunau 83fdb1d7beSWill Deaconendmenu 84fdb1d7beSWill Deacon 85bad614b2SGary R Hookconfig IOMMU_DEBUGFS 86bad614b2SGary R Hook bool "Export IOMMU internals in DebugFS" 87bad614b2SGary R Hook depends on DEBUG_FS 88bad614b2SGary R Hook help 89bad614b2SGary R Hook Allows exposure of IOMMU device internals. This option enables 90bad614b2SGary R Hook the use of debugfs by IOMMU drivers as required. Devices can, 91bad614b2SGary R Hook at initialization time, cause the IOMMU code to create a top-level 92bad614b2SGary R Hook debug/iommu directory, and then populate a subdirectory with 93bad614b2SGary R Hook entries as required. 94bad614b2SGary R Hook 95712d8f20SZhen Leichoice 96e96763ecSRobin Murphy prompt "IOMMU default domain type" 9758d11317SOlof Johansson depends on IOMMU_API 984bbdb725SLinus Torvalds default IOMMU_DEFAULT_DMA_LAZY if X86 || S390 99e96763ecSRobin Murphy default IOMMU_DEFAULT_DMA_STRICT 10058d11317SOlof Johansson help 101e96763ecSRobin Murphy Choose the type of IOMMU domain used to manage DMA API usage by 102e96763ecSRobin Murphy device drivers. The options here typically represent different 103e96763ecSRobin Murphy levels of tradeoff between robustness/security and performance, 104e96763ecSRobin Murphy depending on the IOMMU driver. Not all IOMMUs support all options. 105e96763ecSRobin Murphy This choice can be overridden at boot via the command line, and for 106e96763ecSRobin Murphy some devices also at runtime via sysfs. 10758d11317SOlof Johansson 108712d8f20SZhen Lei If unsure, keep the default. 109712d8f20SZhen Lei 110e96763ecSRobin Murphyconfig IOMMU_DEFAULT_DMA_STRICT 111e96763ecSRobin Murphy bool "Translated - Strict" 112712d8f20SZhen Lei help 113e96763ecSRobin Murphy Trusted devices use translation to restrict their access to only 114e96763ecSRobin Murphy DMA-mapped pages, with strict TLB invalidation on unmap. Equivalent 115e96763ecSRobin Murphy to passing "iommu.passthrough=0 iommu.strict=1" on the command line. 116712d8f20SZhen Lei 117e96763ecSRobin Murphy Untrusted devices always use this mode, with an additional layer of 118e96763ecSRobin Murphy bounce-buffering such that they cannot gain access to any unrelated 119e96763ecSRobin Murphy data within a mapped page. 120e96763ecSRobin Murphy 121e96763ecSRobin Murphyconfig IOMMU_DEFAULT_DMA_LAZY 122e96763ecSRobin Murphy bool "Translated - Lazy" 123712d8f20SZhen Lei help 124e96763ecSRobin Murphy Trusted devices use translation to restrict their access to only 125e96763ecSRobin Murphy DMA-mapped pages, but with "lazy" batched TLB invalidation. This 126e96763ecSRobin Murphy mode allows higher performance with some IOMMUs due to reduced TLB 127e96763ecSRobin Murphy flushing, but at the cost of reduced isolation since devices may be 128e96763ecSRobin Murphy able to access memory for some time after it has been unmapped. 129e96763ecSRobin Murphy Equivalent to passing "iommu.passthrough=0 iommu.strict=0" on the 130e96763ecSRobin Murphy command line. 131712d8f20SZhen Lei 132e96763ecSRobin Murphy If this mode is not supported by the IOMMU driver, the effective 133e96763ecSRobin Murphy runtime default will fall back to IOMMU_DEFAULT_DMA_STRICT. 134e96763ecSRobin Murphy 135e96763ecSRobin Murphyconfig IOMMU_DEFAULT_PASSTHROUGH 136e96763ecSRobin Murphy bool "Passthrough" 137e96763ecSRobin Murphy help 138e96763ecSRobin Murphy Trusted devices are identity-mapped, giving them unrestricted access 139e96763ecSRobin Murphy to memory with minimal performance overhead. Equivalent to passing 140e96763ecSRobin Murphy "iommu.passthrough=1" (historically "iommu=pt") on the command line. 141e96763ecSRobin Murphy 142e96763ecSRobin Murphy If this mode is not supported by the IOMMU driver, the effective 143e96763ecSRobin Murphy runtime default will fall back to IOMMU_DEFAULT_DMA_STRICT. 144712d8f20SZhen Lei 145712d8f20SZhen Leiendchoice 14658d11317SOlof Johansson 1474e0ee78fSHiroshi Doyuconfig OF_IOMMU 1484e0ee78fSHiroshi Doyu def_bool y 1497eba1d51SWill Deacon depends on OF && IOMMU_API 1504e0ee78fSHiroshi Doyu 1510db2e5d1SRobin Murphy# IOMMU-agnostic DMA-mapping layer 1520db2e5d1SRobin Murphyconfig IOMMU_DMA 1534bbdb725SLinus Torvalds def_bool ARM64 || X86 || S390 154b5c58b2fSLeon Romanovsky select DMA_OPS_HELPERS 1550db2e5d1SRobin Murphy select IOMMU_API 1560db2e5d1SRobin Murphy select IOMMU_IOVA 15759a68eb8SRobin Murphy select NEED_SG_DMA_LENGTH 158861370f4SCatalin Marinas select NEED_SG_DMA_FLAGS if SWIOTLB 1590db2e5d1SRobin Murphy 1607ba56472SFenghua Yu# Shared Virtual Addressing 1617ba56472SFenghua Yuconfig IOMMU_SVA 1628f23f5dbSJason Gunthorpe select IOMMU_MM_DATA 163cfc78dfdSJean-Philippe Brucker bool 164cfc78dfdSJean-Philippe Brucker 16517c51a0eSLu Baoluconfig IOMMU_IOPF 16617c51a0eSLu Baolu bool 16717c51a0eSLu Baolu 168695093e3SVarun Sethiconfig FSL_PAMU 169695093e3SVarun Sethi bool "Freescale IOMMU support" 170a4d98fb3SJoerg Roedel depends on PCI 171af29d9faSJoerg Roedel depends on PHYS_64BIT 172a0d284d2SAndy Fleming depends on PPC_E500MC || (COMPILE_TEST && PPC) 173695093e3SVarun Sethi select IOMMU_API 174695093e3SVarun Sethi select GENERIC_ALLOCATOR 175695093e3SVarun Sethi help 176695093e3SVarun Sethi Freescale PAMU support. PAMU is the IOMMU present on Freescale QorIQ platforms. 177695093e3SVarun Sethi PAMU can authorize memory access, remap the memory address, and remap I/O 178695093e3SVarun Sethi transaction types. 179695093e3SVarun Sethi 180b10f127eSOhad Ben-Cohen# MSM IOMMU support 181b10f127eSOhad Ben-Cohenconfig MSM_IOMMU 182b10f127eSOhad Ben-Cohen bool "MSM IOMMU Support" 183477ab7a1SJoerg Roedel depends on ARM 18418368ee2SDmitry Baryshkov depends on ARCH_QCOM || COMPILE_TEST 185b10f127eSOhad Ben-Cohen select IOMMU_API 186c9220fbdSSricharan R select IOMMU_IO_PGTABLE_ARMV7S 187b10f127eSOhad Ben-Cohen help 188b10f127eSOhad Ben-Cohen Support for the IOMMUs found on certain Qualcomm SOCs. 189b10f127eSOhad Ben-Cohen These IOMMUs allow virtualization of the address space used by most 190b10f127eSOhad Ben-Cohen cores within the multimedia subsystem. 191b10f127eSOhad Ben-Cohen 192b10f127eSOhad Ben-Cohen If unsure, say N here. 193b10f127eSOhad Ben-Cohen 194cbe94c6eSJerry Snitselaarsource "drivers/iommu/amd/Kconfig" 195*0da188c8SRobin Murphysource "drivers/iommu/arm/Kconfig" 196ab65ba57SJerry Snitselaarsource "drivers/iommu/intel/Kconfig" 1972ff4bed7SJason Gunthorpesource "drivers/iommu/iommufd/Kconfig" 1985c0ebbd3STomasz Jeznachsource "drivers/iommu/riscv/Kconfig" 19904618252SLu Baolu 200d3f13810SSuresh Siddhaconfig IRQ_REMAP 201a446e219SKees Cook bool "Support for Interrupt Remapping" 202a446e219SKees Cook depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI 20370bad345SBert Karwatzki select DMAR_TABLE if INTEL_IOMMU 204a7f7f624SMasahiro Yamada help 205166e9278SOhad Ben-Cohen Supports Interrupt remapping for IO-APIC and MSI devices. 206166e9278SOhad Ben-Cohen To use x2apic mode in the CPU's which support x2APIC enhancements or 207166e9278SOhad Ben-Cohen to support platforms with CPU's having > 8 bit APIC ID, say Y. 20868255b62SJoerg Roedel 209fcf3a6efSOhad Ben-Cohen# OMAP IOMMU support 210fcf3a6efSOhad Ben-Cohenconfig OMAP_IOMMU 211fcf3a6efSOhad Ben-Cohen bool "OMAP IOMMU Support" 212477ab7a1SJoerg Roedel depends on ARCH_OMAP2PLUS || COMPILE_TEST 213fcf3a6efSOhad Ben-Cohen select IOMMU_API 214a7f7f624SMasahiro Yamada help 21506b718c0SGerd Hoffmann The OMAP3 media platform drivers depend on iommu support, 21606b718c0SGerd Hoffmann if you need them say Y here. 217fcf3a6efSOhad Ben-Cohen 218fcf3a6efSOhad Ben-Cohenconfig OMAP_IOMMU_DEBUG 21961c75352SSuman Anna bool "Export OMAP IOMMU internals in DebugFS" 220baaa7b5dSLaurent Pinchart depends on OMAP_IOMMU && DEBUG_FS 221a7f7f624SMasahiro Yamada help 222fcf3a6efSOhad Ben-Cohen Select this to see extensive information about 223baaa7b5dSLaurent Pinchart the internal state of OMAP IOMMU in debugfs. 224fcf3a6efSOhad Ben-Cohen 225fcf3a6efSOhad Ben-Cohen Say N unless you know you need this. 226fcf3a6efSOhad Ben-Cohen 227c68a2921SDaniel Kurtzconfig ROCKCHIP_IOMMU 228c68a2921SDaniel Kurtz bool "Rockchip IOMMU Support" 22911175886SJoerg Roedel depends on ARCH_ROCKCHIP || COMPILE_TEST 230c68a2921SDaniel Kurtz select IOMMU_API 231c68a2921SDaniel Kurtz select ARM_DMA_USE_IOMMU 232c68a2921SDaniel Kurtz help 233c68a2921SDaniel Kurtz Support for IOMMUs found on Rockchip rk32xx SOCs. 234c68a2921SDaniel Kurtz These IOMMUs allow virtualization of the address space used by most 235c68a2921SDaniel Kurtz cores within the multimedia subsystem. 236c68a2921SDaniel Kurtz Say Y here if you are using a Rockchip SoC that includes an IOMMU 237c68a2921SDaniel Kurtz device. 238c68a2921SDaniel Kurtz 2394100b8c2SMaxime Ripardconfig SUN50I_IOMMU 2404100b8c2SMaxime Ripard bool "Allwinner H6 IOMMU Support" 241c7451e49SGeert Uytterhoeven depends on HAS_DMA 2424100b8c2SMaxime Ripard depends on ARCH_SUNXI || COMPILE_TEST 2434100b8c2SMaxime Ripard select ARM_DMA_USE_IOMMU 2444100b8c2SMaxime Ripard select IOMMU_API 2454100b8c2SMaxime Ripard help 2464100b8c2SMaxime Ripard Support for the IOMMU introduced in the Allwinner H6 SoCs. 2474100b8c2SMaxime Ripard 2487a31f6f4SHiroshi DOYUconfig TEGRA_IOMMU_SMMU 24989184651SThierry Reding bool "NVIDIA Tegra SMMU Support" 25089184651SThierry Reding depends on ARCH_TEGRA 25189184651SThierry Reding depends on TEGRA_AHB 25289184651SThierry Reding depends on TEGRA_MC 2537a31f6f4SHiroshi DOYU select IOMMU_API 2547a31f6f4SHiroshi DOYU help 25589184651SThierry Reding This driver supports the IOMMU hardware (SMMU) found on NVIDIA Tegra 256588c43a7SThierry Reding SoCs (Tegra30 up to Tegra210). 2577a31f6f4SHiroshi DOYU 2582a96536eSKyongHo Choconfig EXYNOS_IOMMU 2592a96536eSKyongHo Cho bool "Exynos IOMMU Support" 260b4ceb4a5SRobin Murphy depends on ARCH_EXYNOS || COMPILE_TEST 261db3a7fd7SArnd Bergmann depends on !CPU_BIG_ENDIAN # revisit driver if we can enable big-endian ptes 2622a96536eSKyongHo Cho select IOMMU_API 2634802c1d0STushar Behera select ARM_DMA_USE_IOMMU 2642a96536eSKyongHo Cho help 2652a96536eSKyongHo Cho Support for the IOMMU (System MMU) of Samsung Exynos application 2665455d700SSachin Kamat processor family. This enables H/W multimedia accelerators to see 2675455d700SSachin Kamat non-linear physical memory chunks as linear memory in their 2685455d700SSachin Kamat address space. 2692a96536eSKyongHo Cho 2702a96536eSKyongHo Cho If unsure, say N here. 2712a96536eSKyongHo Cho 2722a96536eSKyongHo Choconfig EXYNOS_IOMMU_DEBUG 2732a96536eSKyongHo Cho bool "Debugging log for Exynos IOMMU" 2742a96536eSKyongHo Cho depends on EXYNOS_IOMMU 2752a96536eSKyongHo Cho help 2762a96536eSKyongHo Cho Select this to see the detailed log message that shows what 2775455d700SSachin Kamat happens in the IOMMU driver. 2782a96536eSKyongHo Cho 2795455d700SSachin Kamat Say N unless you need kernel log message for IOMMU debugging. 2802a96536eSKyongHo Cho 281d25a2a16SLaurent Pinchartconfig IPMMU_VMSA 282d25a2a16SLaurent Pinchart bool "Renesas VMSA-compatible IPMMU" 283d286a58bSRobin Murphy depends on ARCH_RENESAS || COMPILE_TEST 284e332003bSRandy Dunlap depends on ARM || ARM64 || COMPILE_TEST 285d286a58bSRobin Murphy depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_LPAE 286d25a2a16SLaurent Pinchart select IOMMU_API 287f20ed39fSLaurent Pinchart select IOMMU_IO_PGTABLE_LPAE 288d25a2a16SLaurent Pinchart select ARM_DMA_USE_IOMMU 289d25a2a16SLaurent Pinchart help 29015021d36SGeert Uytterhoeven Support for the Renesas VMSA-compatible IPMMU found in the R-Mobile 291d714aaa7SLad Prabhakar APE6, R-Car Gen{2,3} and RZ/G{1,2} SoCs. 292d25a2a16SLaurent Pinchart 293d25a2a16SLaurent Pinchart If unsure, say N. 294d25a2a16SLaurent Pinchart 2954e13c1acSAlexey Kardashevskiyconfig SPAPR_TCE_IOMMU 2964e13c1acSAlexey Kardashevskiy bool "sPAPR TCE IOMMU Support" 2979dd124b6SKrzysztof Kozlowski depends on PPC_POWERNV || PPC_PSERIES 2984e13c1acSAlexey Kardashevskiy select IOMMU_API 2994e13c1acSAlexey Kardashevskiy help 3004e13c1acSAlexey Kardashevskiy Enables bits of IOMMU API required by VFIO. The iommu_ops 3014e13c1acSAlexey Kardashevskiy is not implemented as it is not necessary for VFIO. 3024e13c1acSAlexey Kardashevskiy 30346d1fb07SSven Peterconfig APPLE_DART 30446d1fb07SSven Peter tristate "Apple DART IOMMU Support" 305d286a58bSRobin Murphy depends on ARCH_APPLE || COMPILE_TEST 306d286a58bSRobin Murphy depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_DART 30746d1fb07SSven Peter select IOMMU_API 308745ef109SJanne Grunau select IOMMU_IO_PGTABLE_DART 30946d1fb07SSven Peter default ARCH_APPLE 31046d1fb07SSven Peter help 31146d1fb07SSven Peter Support for Apple DART (Device Address Resolution Table) IOMMUs 31246d1fb07SSven Peter found in Apple ARM SoCs like the M1. 31346d1fb07SSven Peter This IOMMU is required for most peripherals using DMA to access 31446d1fb07SSven Peter the main memory. 31546d1fb07SSven Peter 31646d1fb07SSven Peter Say Y here if you are using an Apple SoC. 31746d1fb07SSven Peter 3188128f23cSGerald Schaeferconfig S390_IOMMU 3198128f23cSGerald Schaefer def_bool y if S390 && PCI 3208128f23cSGerald Schaefer depends on S390 && PCI 3218128f23cSGerald Schaefer select IOMMU_API 3228128f23cSGerald Schaefer help 3238128f23cSGerald Schaefer Support for the IOMMU API for s390 PCI devices. 3248128f23cSGerald Schaefer 3250df4fabeSYong Wuconfig MTK_IOMMU 32618d8c74eSYong Wu tristate "MediaTek IOMMU Support" 3270df4fabeSYong Wu depends on ARCH_MEDIATEK || COMPILE_TEST 3281928832fSArnd Bergmann select ARM_DMA_USE_IOMMU 3290df4fabeSYong Wu select IOMMU_API 3300df4fabeSYong Wu select IOMMU_IO_PGTABLE_ARMV7S 3310df4fabeSYong Wu select MEMORY 3320df4fabeSYong Wu select MTK_SMI 3330df4fabeSYong Wu help 3340df4fabeSYong Wu Support for the M4U on certain Mediatek SOCs. M4U is MultiMedia 3350df4fabeSYong Wu Memory Management Unit. This option enables remapping of DMA memory 3360df4fabeSYong Wu accesses for the multimedia subsystem. 3370df4fabeSYong Wu 3380df4fabeSYong Wu If unsure, say N here. 3390df4fabeSYong Wu 340b17336c5SHonghui Zhangconfig MTK_IOMMU_V1 3418de000cfSYong Wu tristate "MediaTek IOMMU Version 1 (M4U gen1) Support" 342ba40f9dcSRobin Murphy depends on (ARCH_MEDIATEK && ARM) || COMPILE_TEST 343b17336c5SHonghui Zhang select ARM_DMA_USE_IOMMU 344b17336c5SHonghui Zhang select IOMMU_API 345b17336c5SHonghui Zhang select MEMORY 346b17336c5SHonghui Zhang select MTK_SMI 347b17336c5SHonghui Zhang help 348b17336c5SHonghui Zhang Support for the M4U on certain Mediatek SoCs. M4U generation 1 HW is 349b17336c5SHonghui Zhang Multimedia Memory Managememt Unit. This option enables remapping of 350b17336c5SHonghui Zhang DMA memory accesses for the multimedia subsystem. 351b17336c5SHonghui Zhang 352b17336c5SHonghui Zhang if unsure, say N here. 353b17336c5SHonghui Zhang 35429217a47SLan Tianyuconfig HYPERV_IOMMU 355fea858dcSNuno Das Neves bool "Hyper-V IRQ Handling" 356d7f0b2e4SBoqun Feng depends on HYPERV && X86 35729217a47SLan Tianyu select IOMMU_API 35829217a47SLan Tianyu default HYPERV 35929217a47SLan Tianyu help 360fea858dcSNuno Das Neves Stub IOMMU driver to handle IRQs to support Hyper-V Linux 361fea858dcSNuno Das Neves guest and root partitions. 36229217a47SLan Tianyu 363edcd69abSJean-Philippe Bruckerconfig VIRTIO_IOMMU 364fa4afd78SJean-Philippe Brucker tristate "Virtio IOMMU driver" 365fa4afd78SJean-Philippe Brucker depends on VIRTIO 3668ce4904bSJean-Philippe Brucker depends on (ARM64 || X86) 367edcd69abSJean-Philippe Brucker select IOMMU_API 368edcd69abSJean-Philippe Brucker select INTERVAL_TREE 3693cf48554SJean-Philippe Brucker select ACPI_VIOT if ACPI 370edcd69abSJean-Philippe Brucker help 371edcd69abSJean-Philippe Brucker Para-virtualised IOMMU driver with virtio. 372edcd69abSJean-Philippe Brucker 373edcd69abSJean-Philippe Brucker Say Y here if you intend to run this kernel as a guest. 374edcd69abSJean-Philippe Brucker 375b23e4fc4SChunyan Zhangconfig SPRD_IOMMU 376b23e4fc4SChunyan Zhang tristate "Unisoc IOMMU Support" 377b23e4fc4SChunyan Zhang depends on ARCH_SPRD || COMPILE_TEST 378b23e4fc4SChunyan Zhang select IOMMU_API 379b23e4fc4SChunyan Zhang help 380b23e4fc4SChunyan Zhang Support for IOMMU on Unisoc's SoCs, this IOMMU can be used by 381b23e4fc4SChunyan Zhang Unisoc's multimedia devices, such as display, Image codec(jpeg) 382b23e4fc4SChunyan Zhang and a few signal processors, including VSP(video), GSP(graphic), 383b23e4fc4SChunyan Zhang ISP(image), and CPP(camera pixel processor), etc. 384b23e4fc4SChunyan Zhang 385b23e4fc4SChunyan Zhang Say Y here if you want to use the multimedia devices listed above. 386b23e4fc4SChunyan Zhang 38768255b62SJoerg Roedelendif # IOMMU_SUPPORT 388