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Ohad Ben-Cohenab493a02011-06-02 02:48:05 +03001# IOMMU_API always gets selected by whoever wants it.
2config IOMMU_API
3 bool
Ohad Ben-Cohenb10f1272011-06-02 03:20:08 +03004
Joerg Roedel68255b62011-06-14 15:51:54 +02005menuconfig IOMMU_SUPPORT
6 bool "IOMMU Hardware Support"
Arnd Bergmanne5144c92015-01-28 15:45:53 +01007 depends on MMU
Joerg Roedel68255b62011-06-14 15:51:54 +02008 default y
9 ---help---
10 Say Y here if you want to compile device drivers for IO Memory
11 Management Units into the kernel. These devices usually allow to
12 remap DMA requests and/or remap interrupts from other devices on the
13 system.
14
15if IOMMU_SUPPORT
16
Will Deaconfdb1d7b2014-11-14 17:16:49 +000017menu "Generic IOMMU Pagetable Support"
18
19# Selected by the actual pagetable implementations
20config IOMMU_IO_PGTABLE
21 bool
22
Will Deacone1d3c0f2014-11-14 17:18:23 +000023config IOMMU_IO_PGTABLE_LPAE
24 bool "ARMv7/v8 Long Descriptor Format"
25 select IOMMU_IO_PGTABLE
Robin Murphyffcb6d12015-09-17 17:42:16 +010026 depends on HAS_DMA && (ARM || ARM64 || COMPILE_TEST)
Will Deacone1d3c0f2014-11-14 17:18:23 +000027 help
28 Enable support for the ARM long descriptor pagetable format.
29 This allocator supports 4K/2M/1G, 16K/32M and 64K/512M page
30 sizes at both stage-1 and stage-2, as well as address spaces
31 up to 48-bits in size.
32
Will Deaconfe4b9912014-11-17 23:31:12 +000033config IOMMU_IO_PGTABLE_LPAE_SELFTEST
34 bool "LPAE selftests"
35 depends on IOMMU_IO_PGTABLE_LPAE
36 help
37 Enable self-tests for LPAE page table allocator. This performs
38 a series of page-table consistency checks during boot.
39
40 If unsure, say N here.
41
Robin Murphye5fc9752016-01-26 17:13:13 +000042config IOMMU_IO_PGTABLE_ARMV7S
43 bool "ARMv7/v8 Short Descriptor Format"
44 select IOMMU_IO_PGTABLE
45 depends on HAS_DMA && (ARM || ARM64 || COMPILE_TEST)
46 help
47 Enable support for the ARM Short-descriptor pagetable format.
48 This supports 32-bit virtual and physical addresses mapped using
49 2-level tables with 4KB pages/1MB sections, and contiguous entries
50 for 64KB pages/16MB supersections if indicated by the IOMMU driver.
51
52config IOMMU_IO_PGTABLE_ARMV7S_SELFTEST
53 bool "ARMv7s selftests"
54 depends on IOMMU_IO_PGTABLE_ARMV7S
55 help
56 Enable self-tests for ARMv7s page table allocator. This performs
57 a series of page-table consistency checks during boot.
58
59 If unsure, say N here.
60
Will Deaconfdb1d7b2014-11-14 17:16:49 +000061endmenu
62
Robin Murphy114150d2015-01-12 17:51:13 +000063config IOMMU_IOVA
Sakari Ailus15bbdec2015-07-13 14:31:30 +030064 tristate
Robin Murphy114150d2015-01-12 17:51:13 +000065
Hiroshi Doyu4e0ee782012-06-25 14:23:54 +030066config OF_IOMMU
67 def_bool y
Will Deacon7eba1d52014-08-27 16:20:32 +010068 depends on OF && IOMMU_API
Hiroshi Doyu4e0ee782012-06-25 14:23:54 +030069
Robin Murphy0db2e5d2015-10-01 20:13:58 +010070# IOMMU-agnostic DMA-mapping layer
71config IOMMU_DMA
72 bool
Robin Murphy0db2e5d2015-10-01 20:13:58 +010073 select IOMMU_API
74 select IOMMU_IOVA
Robin Murphy59a68eb2016-02-29 11:13:39 +000075 select NEED_SG_DMA_LENGTH
Robin Murphy0db2e5d2015-10-01 20:13:58 +010076
Varun Sethi695093e2013-07-15 10:20:57 +053077config FSL_PAMU
78 bool "Freescale IOMMU support"
Andy Fleminga0d284d2016-03-16 23:15:44 -050079 depends on PPC_E500MC || (COMPILE_TEST && PPC)
Varun Sethi695093e2013-07-15 10:20:57 +053080 select IOMMU_API
81 select GENERIC_ALLOCATOR
82 help
83 Freescale PAMU support. PAMU is the IOMMU present on Freescale QorIQ platforms.
84 PAMU can authorize memory access, remap the memory address, and remap I/O
85 transaction types.
86
Ohad Ben-Cohenb10f1272011-06-02 03:20:08 +030087# MSM IOMMU support
88config MSM_IOMMU
89 bool "MSM IOMMU Support"
Joerg Roedel477ab7a2015-01-20 16:13:33 +010090 depends on ARM
91 depends on ARCH_MSM8X60 || ARCH_MSM8960 || COMPILE_TEST
Thierry Redinga3f447a2015-02-06 11:44:08 +010092 depends on BROKEN
Ohad Ben-Cohenb10f1272011-06-02 03:20:08 +030093 select IOMMU_API
94 help
95 Support for the IOMMUs found on certain Qualcomm SOCs.
96 These IOMMUs allow virtualization of the address space used by most
97 cores within the multimedia subsystem.
98
99 If unsure, say N here.
100
101config IOMMU_PGTABLES_L2
102 def_bool y
103 depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n
Ohad Ben-Cohen29b68412011-06-05 18:22:18 +0300104
105# AMD IOMMU support
106config AMD_IOMMU
107 bool "AMD IOMMU support"
108 select SWIOTLB
109 select PCI_MSI
Joerg Roedel52815b72011-11-17 17:24:28 +0100110 select PCI_ATS
111 select PCI_PRI
112 select PCI_PASID
Ohad Ben-Cohen29b68412011-06-05 18:22:18 +0300113 select IOMMU_API
Thomas Petazzoni0dbc6072013-10-03 11:59:14 +0200114 depends on X86_64 && PCI && ACPI
Ohad Ben-Cohen29b68412011-06-05 18:22:18 +0300115 ---help---
116 With this option you can enable support for AMD IOMMU hardware in
117 your system. An IOMMU is a hardware component which provides
118 remapping of DMA memory accesses from devices. With an AMD IOMMU you
Masanari Iida59bf8962012-04-18 00:01:21 +0900119 can isolate the DMA memory of different devices and protect the
Ohad Ben-Cohen29b68412011-06-05 18:22:18 +0300120 system from misbehaving device drivers or hardware.
121
122 You can find out if your system has an AMD IOMMU if you look into
123 your BIOS for an option to enable it or if you have an IVRS ACPI
124 table.
125
Joerg Roedele3c495c2011-11-09 12:31:15 +0100126config AMD_IOMMU_V2
Kees Cooka446e212013-01-16 18:53:39 -0800127 tristate "AMD IOMMU Version 2 driver"
Borislav Petkove5cac322014-07-10 12:44:56 +0200128 depends on AMD_IOMMU
Joerg Roedel8736b2c2011-11-24 16:21:52 +0100129 select MMU_NOTIFIER
Joerg Roedele3c495c2011-11-09 12:31:15 +0100130 ---help---
131 This option enables support for the AMD IOMMUv2 features of the IOMMU
132 hardware. Select this option if you want to use devices that support
Masanari Iida59bf8962012-04-18 00:01:21 +0900133 the PCI PRI and PASID interface.
Joerg Roedele3c495c2011-11-09 12:31:15 +0100134
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300135# Intel IOMMU support
Suresh Siddhad3f13812011-08-23 17:05:25 -0700136config DMAR_TABLE
137 bool
138
139config INTEL_IOMMU
140 bool "Support for Intel IOMMU using DMA Remapping Devices"
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300141 depends on PCI_MSI && ACPI && (X86 || IA64_GENERIC)
142 select IOMMU_API
Robin Murphy114150d2015-01-12 17:51:13 +0000143 select IOMMU_IOVA
Suresh Siddhad3f13812011-08-23 17:05:25 -0700144 select DMAR_TABLE
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300145 help
146 DMA remapping (DMAR) devices support enables independent address
147 translations for Direct Memory Access (DMA) from devices.
148 These DMA remapping devices are reported via ACPI tables
149 and include PCI device scope covered by these DMA
150 remapping devices.
151
David Woodhouse8a94ade2015-03-24 14:54:56 +0000152config INTEL_IOMMU_SVM
153 bool "Support for Shared Virtual Memory with Intel IOMMU"
154 depends on INTEL_IOMMU && X86
David Woodhouseb16d0cb2015-10-12 14:17:37 +0100155 select PCI_PASID
David Woodhouse2f26e0a2015-09-09 11:40:47 +0100156 select MMU_NOTIFIER
David Woodhouse8a94ade2015-03-24 14:54:56 +0000157 help
158 Shared Virtual Memory (SVM) provides a facility for devices
159 to access DMA resources through process address space by
160 means of a Process Address Space ID (PASID).
161
Suresh Siddhad3f13812011-08-23 17:05:25 -0700162config INTEL_IOMMU_DEFAULT_ON
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300163 def_bool y
Suresh Siddhad3f13812011-08-23 17:05:25 -0700164 prompt "Enable Intel DMA Remapping Devices by default"
165 depends on INTEL_IOMMU
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300166 help
167 Selecting this option will enable a DMAR device at boot time if
168 one is found. If this option is not selected, DMAR support can
169 be enabled by passing intel_iommu=on to the kernel.
170
Suresh Siddhad3f13812011-08-23 17:05:25 -0700171config INTEL_IOMMU_BROKEN_GFX_WA
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300172 bool "Workaround broken graphics drivers (going away soon)"
Suresh Siddhad3f13812011-08-23 17:05:25 -0700173 depends on INTEL_IOMMU && BROKEN && X86
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300174 ---help---
175 Current Graphics drivers tend to use physical address
176 for DMA and avoid using DMA APIs. Setting this config
177 option permits the IOMMU driver to set a unity map for
178 all the OS-visible memory. Hence the driver can continue
179 to use physical addresses for DMA, at least until this
180 option is removed in the 2.6.32 kernel.
181
Suresh Siddhad3f13812011-08-23 17:05:25 -0700182config INTEL_IOMMU_FLOPPY_WA
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300183 def_bool y
Suresh Siddhad3f13812011-08-23 17:05:25 -0700184 depends on INTEL_IOMMU && X86
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300185 ---help---
186 Floppy disk drivers are known to bypass DMA API calls
187 thereby failing to work when IOMMU is enabled. This
188 workaround will setup a 1:1 mapping for the first
189 16MiB to make floppy (an ISA device) work.
190
Suresh Siddhad3f13812011-08-23 17:05:25 -0700191config IRQ_REMAP
Kees Cooka446e212013-01-16 18:53:39 -0800192 bool "Support for Interrupt Remapping"
193 depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI
Suresh Siddhad3f13812011-08-23 17:05:25 -0700194 select DMAR_TABLE
Ohad Ben-Cohen166e9272011-06-10 21:42:27 +0300195 ---help---
196 Supports Interrupt remapping for IO-APIC and MSI devices.
197 To use x2apic mode in the CPU's which support x2APIC enhancements or
198 to support platforms with CPU's having > 8 bit APIC ID, say Y.
Joerg Roedel68255b62011-06-14 15:51:54 +0200199
Ohad Ben-Cohenfcf3a6e2011-08-15 23:21:41 +0300200# OMAP IOMMU support
201config OMAP_IOMMU
202 bool "OMAP IOMMU Support"
Joerg Roedel477ab7a2015-01-20 16:13:33 +0100203 depends on ARM && MMU
204 depends on ARCH_OMAP2PLUS || COMPILE_TEST
Ohad Ben-Cohenfcf3a6e2011-08-15 23:21:41 +0300205 select IOMMU_API
Gerd Hoffmann06b718c2014-11-11 09:17:00 +0100206 ---help---
207 The OMAP3 media platform drivers depend on iommu support,
208 if you need them say Y here.
Ohad Ben-Cohenfcf3a6e2011-08-15 23:21:41 +0300209
Ohad Ben-Cohenfcf3a6e2011-08-15 23:21:41 +0300210config OMAP_IOMMU_DEBUG
Suman Anna61c75352014-10-22 17:22:30 -0500211 bool "Export OMAP IOMMU internals in DebugFS"
212 depends on OMAP_IOMMU && DEBUG_FS
213 ---help---
214 Select this to see extensive information about
215 the internal state of OMAP IOMMU in debugfs.
Ohad Ben-Cohenfcf3a6e2011-08-15 23:21:41 +0300216
Suman Anna61c75352014-10-22 17:22:30 -0500217 Say N unless you know you need this.
Ohad Ben-Cohenfcf3a6e2011-08-15 23:21:41 +0300218
Daniel Kurtzc68a2922014-11-03 10:53:27 +0800219config ROCKCHIP_IOMMU
220 bool "Rockchip IOMMU Support"
Joerg Roedel11175882014-11-03 18:16:56 +0100221 depends on ARM
222 depends on ARCH_ROCKCHIP || COMPILE_TEST
Daniel Kurtzc68a2922014-11-03 10:53:27 +0800223 select IOMMU_API
224 select ARM_DMA_USE_IOMMU
225 help
226 Support for IOMMUs found on Rockchip rk32xx SOCs.
227 These IOMMUs allow virtualization of the address space used by most
228 cores within the multimedia subsystem.
229 Say Y here if you are using a Rockchip SoC that includes an IOMMU
230 device.
Ohad Ben-Cohenab493a02011-06-02 02:48:05 +0300231
Hiroshi DOYUd53e54b2011-11-16 17:36:37 +0200232config TEGRA_IOMMU_GART
233 bool "Tegra GART IOMMU Support"
234 depends on ARCH_TEGRA_2x_SOC
235 select IOMMU_API
236 help
237 Enables support for remapping discontiguous physical memory
238 shared with the operating system into contiguous I/O virtual
239 space through the GART (Graphics Address Relocation Table)
240 hardware included on Tegra SoCs.
241
Hiroshi DOYU7a31f6f2011-11-17 07:31:31 +0200242config TEGRA_IOMMU_SMMU
Thierry Reding89184652014-04-16 09:24:44 +0200243 bool "NVIDIA Tegra SMMU Support"
244 depends on ARCH_TEGRA
245 depends on TEGRA_AHB
246 depends on TEGRA_MC
Hiroshi DOYU7a31f6f2011-11-17 07:31:31 +0200247 select IOMMU_API
248 help
Thierry Reding89184652014-04-16 09:24:44 +0200249 This driver supports the IOMMU hardware (SMMU) found on NVIDIA Tegra
Thierry Reding588c43a2015-03-23 10:45:12 +0100250 SoCs (Tegra30 up to Tegra210).
Hiroshi DOYU7a31f6f2011-11-17 07:31:31 +0200251
KyongHo Cho2a965362012-05-12 05:56:09 +0900252config EXYNOS_IOMMU
253 bool "Exynos IOMMU Support"
Marek Szyprowski740a01e2016-02-18 15:12:58 +0100254 depends on ARCH_EXYNOS && MMU
KyongHo Cho2a965362012-05-12 05:56:09 +0900255 select IOMMU_API
Tushar Behera4802c1d2014-07-04 15:01:08 +0530256 select ARM_DMA_USE_IOMMU
KyongHo Cho2a965362012-05-12 05:56:09 +0900257 help
Sachin Kamat5455d702014-05-22 09:50:55 +0530258 Support for the IOMMU (System MMU) of Samsung Exynos application
259 processor family. This enables H/W multimedia accelerators to see
260 non-linear physical memory chunks as linear memory in their
261 address space.
KyongHo Cho2a965362012-05-12 05:56:09 +0900262
263 If unsure, say N here.
264
265config EXYNOS_IOMMU_DEBUG
266 bool "Debugging log for Exynos IOMMU"
267 depends on EXYNOS_IOMMU
268 help
269 Select this to see the detailed log message that shows what
Sachin Kamat5455d702014-05-22 09:50:55 +0530270 happens in the IOMMU driver.
KyongHo Cho2a965362012-05-12 05:56:09 +0900271
Sachin Kamat5455d702014-05-22 09:50:55 +0530272 Say N unless you need kernel log message for IOMMU debugging.
KyongHo Cho2a965362012-05-12 05:56:09 +0900273
Laurent Pinchartd25a2a12014-04-02 12:47:37 +0200274config IPMMU_VMSA
275 bool "Renesas VMSA-compatible IPMMU"
276 depends on ARM_LPAE
Simon Horman9015ba42016-02-22 10:41:35 +0900277 depends on ARCH_RENESAS || COMPILE_TEST
Laurent Pinchartd25a2a12014-04-02 12:47:37 +0200278 select IOMMU_API
Laurent Pinchartf20ed392015-01-20 18:30:04 +0200279 select IOMMU_IO_PGTABLE_LPAE
Laurent Pinchartd25a2a12014-04-02 12:47:37 +0200280 select ARM_DMA_USE_IOMMU
281 help
282 Support for the Renesas VMSA-compatible IPMMU Renesas found in the
283 R-Mobile APE6 and R-Car H2/M2 SoCs.
284
285 If unsure, say N.
286
Alexey Kardashevskiy4e13c1a2013-05-21 13:33:09 +1000287config SPAPR_TCE_IOMMU
288 bool "sPAPR TCE IOMMU Support"
Alexey Kardashevskiy5b251992013-05-21 13:33:11 +1000289 depends on PPC_POWERNV || PPC_PSERIES
Alexey Kardashevskiy4e13c1a2013-05-21 13:33:09 +1000290 select IOMMU_API
291 help
292 Enables bits of IOMMU API required by VFIO. The iommu_ops
293 is not implemented as it is not necessary for VFIO.
294
Will Deacon48ec83b2015-05-27 17:25:59 +0100295# ARM IOMMU support
Will Deacon45ae7cf2013-06-24 18:31:25 +0100296config ARM_SMMU
297 bool "ARM Ltd. System MMU (SMMU) Support"
Joerg Roedela20cc762015-02-04 16:53:44 +0100298 depends on (ARM64 || ARM) && MMU
Will Deacon45ae7cf2013-06-24 18:31:25 +0100299 select IOMMU_API
Will Deacon518f7132014-11-14 17:17:54 +0000300 select IOMMU_IO_PGTABLE_LPAE
Will Deacon45ae7cf2013-06-24 18:31:25 +0100301 select ARM_DMA_USE_IOMMU if ARM
302 help
303 Support for implementations of the ARM System MMU architecture
Will Deacon518f7132014-11-14 17:17:54 +0000304 versions 1 and 2.
Will Deacon45ae7cf2013-06-24 18:31:25 +0100305
306 Say Y here if your SoC includes an IOMMU device implementing
307 the ARM SMMU architecture.
308
Will Deacon48ec83b2015-05-27 17:25:59 +0100309config ARM_SMMU_V3
310 bool "ARM Ltd. System MMU Version 3 (SMMUv3) Support"
311 depends on ARM64 && PCI
312 select IOMMU_API
313 select IOMMU_IO_PGTABLE_LPAE
Marc Zyngier166bdbd2015-10-13 18:32:30 +0100314 select GENERIC_MSI_IRQ_DOMAIN
Will Deacon48ec83b2015-05-27 17:25:59 +0100315 help
316 Support for implementations of the ARM System MMU architecture
317 version 3 providing translation support to a PCIe root complex.
318
319 Say Y here if your system includes an IOMMU device implementing
320 the ARM SMMUv3 architecture.
321
Gerald Schaefer8128f232015-08-27 15:33:03 +0200322config S390_IOMMU
323 def_bool y if S390 && PCI
324 depends on S390 && PCI
325 select IOMMU_API
326 help
327 Support for the IOMMU API for s390 PCI devices.
328
Yong Wu0df4fab2016-02-23 01:20:50 +0800329config MTK_IOMMU
330 bool "MTK IOMMU Support"
331 depends on ARM || ARM64
332 depends on ARCH_MEDIATEK || COMPILE_TEST
Arnd Bergmann19288322016-02-29 10:19:06 +0100333 select ARM_DMA_USE_IOMMU
Yong Wu0df4fab2016-02-23 01:20:50 +0800334 select IOMMU_API
335 select IOMMU_DMA
336 select IOMMU_IO_PGTABLE_ARMV7S
337 select MEMORY
338 select MTK_SMI
339 help
340 Support for the M4U on certain Mediatek SOCs. M4U is MultiMedia
341 Memory Management Unit. This option enables remapping of DMA memory
342 accesses for the multimedia subsystem.
343
344 If unsure, say N here.
345
Ohad Ben-Cohenab493a02011-06-02 02:48:05 +0300346endif # IOMMU_SUPPORT