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Commit | Line | Data |
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ab493a0f OBC |
1 | # IOMMU_API always gets selected by whoever wants it. |
2 | config IOMMU_API | |
3 | bool | |
b10f127e | 4 | |
68255b62 JR |
5 | menuconfig IOMMU_SUPPORT |
6 | bool "IOMMU Hardware Support" | |
e5144c93 | 7 | depends on MMU |
68255b62 JR |
8 | 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 | ||
15 | if IOMMU_SUPPORT | |
16 | ||
fdb1d7be WD |
17 | menu "Generic IOMMU Pagetable Support" |
18 | ||
19 | # Selected by the actual pagetable implementations | |
20 | config IOMMU_IO_PGTABLE | |
21 | bool | |
22 | ||
e1d3c0fd WD |
23 | config IOMMU_IO_PGTABLE_LPAE |
24 | bool "ARMv7/v8 Long Descriptor Format" | |
25 | select IOMMU_IO_PGTABLE | |
48e6f765 | 26 | depends on ARM || ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64) |
e1d3c0fd WD |
27 | 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 | ||
fe4b991d WD |
33 | config 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 | ||
e5fc9753 RM |
42 | config IOMMU_IO_PGTABLE_ARMV7S |
43 | bool "ARMv7/v8 Short Descriptor Format" | |
44 | select IOMMU_IO_PGTABLE | |
48e6f765 | 45 | depends on ARM || ARM64 || COMPILE_TEST |
e5fc9753 RM |
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 | ||
52 | config 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 | ||
fdb1d7be WD |
61 | endmenu |
62 | ||
bad614b2 GH |
63 | config IOMMU_DEBUGFS |
64 | bool "Export IOMMU internals in DebugFS" | |
65 | depends on DEBUG_FS | |
66 | help | |
67 | Allows exposure of IOMMU device internals. This option enables | |
68 | the use of debugfs by IOMMU drivers as required. Devices can, | |
69 | at initialization time, cause the IOMMU code to create a top-level | |
70 | debug/iommu directory, and then populate a subdirectory with | |
71 | entries as required. | |
72 | ||
58d11317 OJ |
73 | config IOMMU_DEFAULT_PASSTHROUGH |
74 | bool "IOMMU passthrough by default" | |
75 | depends on IOMMU_API | |
76 | help | |
77 | Enable passthrough by default, removing the need to pass in | |
78 | iommu.passthrough=on or iommu=pt through command line. If this | |
79 | is enabled, you can still disable with iommu.passthrough=off | |
80 | or iommu=nopt depending on the architecture. | |
81 | ||
82 | If unsure, say N here. | |
83 | ||
114150d8 | 84 | config IOMMU_IOVA |
15bbdec3 | 85 | tristate |
114150d8 | 86 | |
4e0ee78f HD |
87 | config OF_IOMMU |
88 | def_bool y | |
7eba1d51 | 89 | depends on OF && IOMMU_API |
4e0ee78f | 90 | |
0db2e5d1 RM |
91 | # IOMMU-agnostic DMA-mapping layer |
92 | config IOMMU_DMA | |
93 | bool | |
0db2e5d1 RM |
94 | select IOMMU_API |
95 | select IOMMU_IOVA | |
59a68eb8 | 96 | select NEED_SG_DMA_LENGTH |
0db2e5d1 | 97 | |
695093e3 VS |
98 | config FSL_PAMU |
99 | bool "Freescale IOMMU support" | |
a4d98fb3 | 100 | depends on PCI |
af29d9fa | 101 | depends on PHYS_64BIT |
a0d284d2 | 102 | depends on PPC_E500MC || (COMPILE_TEST && PPC) |
695093e3 VS |
103 | select IOMMU_API |
104 | select GENERIC_ALLOCATOR | |
105 | help | |
106 | Freescale PAMU support. PAMU is the IOMMU present on Freescale QorIQ platforms. | |
107 | PAMU can authorize memory access, remap the memory address, and remap I/O | |
108 | transaction types. | |
109 | ||
b10f127e OBC |
110 | # MSM IOMMU support |
111 | config MSM_IOMMU | |
112 | bool "MSM IOMMU Support" | |
477ab7a1 JR |
113 | depends on ARM |
114 | depends on ARCH_MSM8X60 || ARCH_MSM8960 || COMPILE_TEST | |
b10f127e | 115 | select IOMMU_API |
c9220fbd | 116 | select IOMMU_IO_PGTABLE_ARMV7S |
b10f127e OBC |
117 | help |
118 | Support for the IOMMUs found on certain Qualcomm SOCs. | |
119 | These IOMMUs allow virtualization of the address space used by most | |
120 | cores within the multimedia subsystem. | |
121 | ||
122 | If unsure, say N here. | |
123 | ||
124 | config IOMMU_PGTABLES_L2 | |
125 | def_bool y | |
126 | depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n | |
29b68415 OBC |
127 | |
128 | # AMD IOMMU support | |
129 | config AMD_IOMMU | |
130 | bool "AMD IOMMU support" | |
131 | select SWIOTLB | |
132 | select PCI_MSI | |
52815b75 JR |
133 | select PCI_ATS |
134 | select PCI_PRI | |
135 | select PCI_PASID | |
29b68415 | 136 | select IOMMU_API |
a72c4225 | 137 | select IOMMU_IOVA |
0dbc6078 | 138 | depends on X86_64 && PCI && ACPI |
29b68415 OBC |
139 | ---help--- |
140 | With this option you can enable support for AMD IOMMU hardware in | |
141 | your system. An IOMMU is a hardware component which provides | |
142 | remapping of DMA memory accesses from devices. With an AMD IOMMU you | |
59bf8964 | 143 | can isolate the DMA memory of different devices and protect the |
29b68415 OBC |
144 | system from misbehaving device drivers or hardware. |
145 | ||
146 | You can find out if your system has an AMD IOMMU if you look into | |
147 | your BIOS for an option to enable it or if you have an IVRS ACPI | |
148 | table. | |
149 | ||
e3c495c7 | 150 | config AMD_IOMMU_V2 |
a446e219 | 151 | tristate "AMD IOMMU Version 2 driver" |
e5cac32c | 152 | depends on AMD_IOMMU |
8736b2c3 | 153 | select MMU_NOTIFIER |
e3c495c7 JR |
154 | ---help--- |
155 | This option enables support for the AMD IOMMUv2 features of the IOMMU | |
156 | hardware. Select this option if you want to use devices that support | |
59bf8964 | 157 | the PCI PRI and PASID interface. |
e3c495c7 | 158 | |
7d0f5fd3 GH |
159 | config AMD_IOMMU_DEBUGFS |
160 | bool "Enable AMD IOMMU internals in DebugFS" | |
161 | depends on AMD_IOMMU && IOMMU_DEBUGFS | |
162 | ---help--- | |
163 | !!!WARNING!!! !!!WARNING!!! !!!WARNING!!! !!!WARNING!!! | |
164 | ||
165 | DO NOT ENABLE THIS OPTION UNLESS YOU REALLY, -REALLY- KNOW WHAT YOU ARE DOING!!! | |
166 | Exposes AMD IOMMU device internals in DebugFS. | |
167 | ||
168 | This option is -NOT- intended for production environments, and should | |
169 | not generally be enabled. | |
170 | ||
166e9278 | 171 | # Intel IOMMU support |
d3f13810 SS |
172 | config DMAR_TABLE |
173 | bool | |
174 | ||
175 | config INTEL_IOMMU | |
176 | bool "Support for Intel IOMMU using DMA Remapping Devices" | |
166e9278 OBC |
177 | depends on PCI_MSI && ACPI && (X86 || IA64_GENERIC) |
178 | select IOMMU_API | |
114150d8 | 179 | select IOMMU_IOVA |
f616ab59 | 180 | select NEED_DMA_MAP_STATE |
d3f13810 | 181 | select DMAR_TABLE |
166e9278 OBC |
182 | help |
183 | DMA remapping (DMAR) devices support enables independent address | |
184 | translations for Direct Memory Access (DMA) from devices. | |
185 | These DMA remapping devices are reported via ACPI tables | |
186 | and include PCI device scope covered by these DMA | |
187 | remapping devices. | |
188 | ||
ee2636b8 SM |
189 | config INTEL_IOMMU_DEBUGFS |
190 | bool "Export Intel IOMMU internals in Debugfs" | |
191 | depends on INTEL_IOMMU && IOMMU_DEBUGFS | |
192 | help | |
193 | !!!WARNING!!! | |
194 | ||
195 | DO NOT ENABLE THIS OPTION UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!!! | |
196 | ||
197 | Expose Intel IOMMU internals in Debugfs. | |
198 | ||
199 | This option is -NOT- intended for production environments, and should | |
200 | only be enabled for debugging Intel IOMMU. | |
201 | ||
8a94ade4 DW |
202 | config INTEL_IOMMU_SVM |
203 | bool "Support for Shared Virtual Memory with Intel IOMMU" | |
204 | depends on INTEL_IOMMU && X86 | |
b16d0cb9 | 205 | select PCI_PASID |
2f26e0a9 | 206 | select MMU_NOTIFIER |
8a94ade4 DW |
207 | help |
208 | Shared Virtual Memory (SVM) provides a facility for devices | |
209 | to access DMA resources through process address space by | |
210 | means of a Process Address Space ID (PASID). | |
211 | ||
d3f13810 | 212 | config INTEL_IOMMU_DEFAULT_ON |
166e9278 | 213 | def_bool y |
d3f13810 SS |
214 | prompt "Enable Intel DMA Remapping Devices by default" |
215 | depends on INTEL_IOMMU | |
166e9278 OBC |
216 | help |
217 | Selecting this option will enable a DMAR device at boot time if | |
218 | one is found. If this option is not selected, DMAR support can | |
219 | be enabled by passing intel_iommu=on to the kernel. | |
220 | ||
d3f13810 | 221 | config INTEL_IOMMU_BROKEN_GFX_WA |
166e9278 | 222 | bool "Workaround broken graphics drivers (going away soon)" |
d3f13810 | 223 | depends on INTEL_IOMMU && BROKEN && X86 |
166e9278 OBC |
224 | ---help--- |
225 | Current Graphics drivers tend to use physical address | |
226 | for DMA and avoid using DMA APIs. Setting this config | |
227 | option permits the IOMMU driver to set a unity map for | |
228 | all the OS-visible memory. Hence the driver can continue | |
229 | to use physical addresses for DMA, at least until this | |
230 | option is removed in the 2.6.32 kernel. | |
231 | ||
d3f13810 | 232 | config INTEL_IOMMU_FLOPPY_WA |
166e9278 | 233 | def_bool y |
d3f13810 | 234 | depends on INTEL_IOMMU && X86 |
166e9278 OBC |
235 | ---help--- |
236 | Floppy disk drivers are known to bypass DMA API calls | |
237 | thereby failing to work when IOMMU is enabled. This | |
238 | workaround will setup a 1:1 mapping for the first | |
239 | 16MiB to make floppy (an ISA device) work. | |
240 | ||
d3f13810 | 241 | config IRQ_REMAP |
a446e219 KC |
242 | bool "Support for Interrupt Remapping" |
243 | depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI | |
d3f13810 | 244 | select DMAR_TABLE |
166e9278 OBC |
245 | ---help--- |
246 | Supports Interrupt remapping for IO-APIC and MSI devices. | |
247 | To use x2apic mode in the CPU's which support x2APIC enhancements or | |
248 | to support platforms with CPU's having > 8 bit APIC ID, say Y. | |
68255b62 | 249 | |
fcf3a6ef OBC |
250 | # OMAP IOMMU support |
251 | config OMAP_IOMMU | |
252 | bool "OMAP IOMMU Support" | |
477ab7a1 JR |
253 | depends on ARM && MMU |
254 | depends on ARCH_OMAP2PLUS || COMPILE_TEST | |
fcf3a6ef | 255 | select IOMMU_API |
06b718c0 GH |
256 | ---help--- |
257 | The OMAP3 media platform drivers depend on iommu support, | |
258 | if you need them say Y here. | |
fcf3a6ef | 259 | |
fcf3a6ef | 260 | config OMAP_IOMMU_DEBUG |
61c75352 SA |
261 | bool "Export OMAP IOMMU internals in DebugFS" |
262 | depends on OMAP_IOMMU && DEBUG_FS | |
263 | ---help--- | |
264 | Select this to see extensive information about | |
265 | the internal state of OMAP IOMMU in debugfs. | |
fcf3a6ef | 266 | |
61c75352 | 267 | Say N unless you know you need this. |
fcf3a6ef | 268 | |
c68a2921 DK |
269 | config ROCKCHIP_IOMMU |
270 | bool "Rockchip IOMMU Support" | |
4f1fcfe9 | 271 | depends on ARM || ARM64 |
11175886 | 272 | depends on ARCH_ROCKCHIP || COMPILE_TEST |
c68a2921 DK |
273 | select IOMMU_API |
274 | select ARM_DMA_USE_IOMMU | |
275 | help | |
276 | Support for IOMMUs found on Rockchip rk32xx SOCs. | |
277 | These IOMMUs allow virtualization of the address space used by most | |
278 | cores within the multimedia subsystem. | |
279 | Say Y here if you are using a Rockchip SoC that includes an IOMMU | |
280 | device. | |
fcf3a6ef | 281 | |
d53e54b4 HD |
282 | config TEGRA_IOMMU_GART |
283 | bool "Tegra GART IOMMU Support" | |
284 | depends on ARCH_TEGRA_2x_SOC | |
285 | select IOMMU_API | |
286 | help | |
287 | Enables support for remapping discontiguous physical memory | |
288 | shared with the operating system into contiguous I/O virtual | |
289 | space through the GART (Graphics Address Relocation Table) | |
290 | hardware included on Tegra SoCs. | |
291 | ||
7a31f6f4 | 292 | config TEGRA_IOMMU_SMMU |
89184651 TR |
293 | bool "NVIDIA Tegra SMMU Support" |
294 | depends on ARCH_TEGRA | |
295 | depends on TEGRA_AHB | |
296 | depends on TEGRA_MC | |
7a31f6f4 HD |
297 | select IOMMU_API |
298 | help | |
89184651 | 299 | This driver supports the IOMMU hardware (SMMU) found on NVIDIA Tegra |
588c43a7 | 300 | SoCs (Tegra30 up to Tegra210). |
7a31f6f4 | 301 | |
2a96536e KC |
302 | config EXYNOS_IOMMU |
303 | bool "Exynos IOMMU Support" | |
740a01ee | 304 | depends on ARCH_EXYNOS && MMU |
db3a7fd7 | 305 | depends on !CPU_BIG_ENDIAN # revisit driver if we can enable big-endian ptes |
2a96536e | 306 | select IOMMU_API |
4802c1d0 | 307 | select ARM_DMA_USE_IOMMU |
2a96536e | 308 | help |
5455d700 SK |
309 | Support for the IOMMU (System MMU) of Samsung Exynos application |
310 | processor family. This enables H/W multimedia accelerators to see | |
311 | non-linear physical memory chunks as linear memory in their | |
312 | address space. | |
2a96536e KC |
313 | |
314 | If unsure, say N here. | |
315 | ||
316 | config EXYNOS_IOMMU_DEBUG | |
317 | bool "Debugging log for Exynos IOMMU" | |
318 | depends on EXYNOS_IOMMU | |
319 | help | |
320 | Select this to see the detailed log message that shows what | |
5455d700 | 321 | happens in the IOMMU driver. |
2a96536e | 322 | |
5455d700 | 323 | Say N unless you need kernel log message for IOMMU debugging. |
2a96536e | 324 | |
d25a2a16 LP |
325 | config IPMMU_VMSA |
326 | bool "Renesas VMSA-compatible IPMMU" | |
3ae47292 | 327 | depends on ARM || IOMMU_DMA |
a4aaeccc | 328 | depends on ARCH_RENESAS || (COMPILE_TEST && !GENERIC_ATOMIC64) |
d25a2a16 | 329 | select IOMMU_API |
f20ed39f | 330 | select IOMMU_IO_PGTABLE_LPAE |
d25a2a16 LP |
331 | select ARM_DMA_USE_IOMMU |
332 | help | |
15021d36 GU |
333 | Support for the Renesas VMSA-compatible IPMMU found in the R-Mobile |
334 | APE6, R-Car Gen2, and R-Car Gen3 SoCs. | |
d25a2a16 LP |
335 | |
336 | If unsure, say N. | |
337 | ||
4e13c1ac AK |
338 | config SPAPR_TCE_IOMMU |
339 | bool "sPAPR TCE IOMMU Support" | |
5b25199e | 340 | depends on PPC_POWERNV || PPC_PSERIES |
4e13c1ac AK |
341 | select IOMMU_API |
342 | help | |
343 | Enables bits of IOMMU API required by VFIO. The iommu_ops | |
344 | is not implemented as it is not necessary for VFIO. | |
345 | ||
48ec83bc | 346 | # ARM IOMMU support |
45ae7cff WD |
347 | config ARM_SMMU |
348 | bool "ARM Ltd. System MMU (SMMU) Support" | |
a20cc76b | 349 | depends on (ARM64 || ARM) && MMU |
45ae7cff | 350 | select IOMMU_API |
518f7136 | 351 | select IOMMU_IO_PGTABLE_LPAE |
45ae7cff WD |
352 | select ARM_DMA_USE_IOMMU if ARM |
353 | help | |
354 | Support for implementations of the ARM System MMU architecture | |
518f7136 | 355 | versions 1 and 2. |
45ae7cff WD |
356 | |
357 | Say Y here if your SoC includes an IOMMU device implementing | |
358 | the ARM SMMU architecture. | |
359 | ||
48ec83bc WD |
360 | config ARM_SMMU_V3 |
361 | bool "ARM Ltd. System MMU Version 3 (SMMUv3) Support" | |
08d4ca2a | 362 | depends on ARM64 |
48ec83bc WD |
363 | select IOMMU_API |
364 | select IOMMU_IO_PGTABLE_LPAE | |
166bdbd2 | 365 | select GENERIC_MSI_IRQ_DOMAIN |
48ec83bc WD |
366 | help |
367 | Support for implementations of the ARM System MMU architecture | |
368 | version 3 providing translation support to a PCIe root complex. | |
369 | ||
370 | Say Y here if your system includes an IOMMU device implementing | |
371 | the ARM SMMUv3 architecture. | |
372 | ||
8128f23c GS |
373 | config S390_IOMMU |
374 | def_bool y if S390 && PCI | |
375 | depends on S390 && PCI | |
376 | select IOMMU_API | |
377 | help | |
378 | Support for the IOMMU API for s390 PCI devices. | |
379 | ||
63f1934d DJS |
380 | config S390_CCW_IOMMU |
381 | bool "S390 CCW IOMMU Support" | |
382 | depends on S390 && CCW | |
383 | select IOMMU_API | |
384 | help | |
385 | Enables bits of IOMMU API required by VFIO. The iommu_ops | |
386 | is not implemented as it is not necessary for VFIO. | |
387 | ||
1fde5734 TK |
388 | config S390_AP_IOMMU |
389 | bool "S390 AP IOMMU Support" | |
390 | depends on S390 && ZCRYPT | |
391 | select IOMMU_API | |
392 | help | |
393 | Enables bits of IOMMU API required by VFIO. The iommu_ops | |
394 | is not implemented as it is not necessary for VFIO. | |
395 | ||
0df4fabe YW |
396 | config MTK_IOMMU |
397 | bool "MTK IOMMU Support" | |
398 | depends on ARM || ARM64 | |
399 | depends on ARCH_MEDIATEK || COMPILE_TEST | |
1928832f | 400 | select ARM_DMA_USE_IOMMU |
0df4fabe YW |
401 | select IOMMU_API |
402 | select IOMMU_DMA | |
403 | select IOMMU_IO_PGTABLE_ARMV7S | |
404 | select MEMORY | |
405 | select MTK_SMI | |
406 | help | |
407 | Support for the M4U on certain Mediatek SOCs. M4U is MultiMedia | |
408 | Memory Management Unit. This option enables remapping of DMA memory | |
409 | accesses for the multimedia subsystem. | |
410 | ||
411 | If unsure, say N here. | |
412 | ||
b17336c5 HZ |
413 | config MTK_IOMMU_V1 |
414 | bool "MTK IOMMU Version 1 (M4U gen1) Support" | |
415 | depends on ARM | |
416 | depends on ARCH_MEDIATEK || COMPILE_TEST | |
417 | select ARM_DMA_USE_IOMMU | |
418 | select IOMMU_API | |
419 | select MEMORY | |
420 | select MTK_SMI | |
b17336c5 HZ |
421 | help |
422 | Support for the M4U on certain Mediatek SoCs. M4U generation 1 HW is | |
423 | Multimedia Memory Managememt Unit. This option enables remapping of | |
424 | DMA memory accesses for the multimedia subsystem. | |
425 | ||
426 | if unsure, say N here. | |
427 | ||
0ae349a0 RC |
428 | config QCOM_IOMMU |
429 | # Note: iommu drivers cannot (yet?) be built as modules | |
430 | bool "Qualcomm IOMMU Support" | |
a4aaeccc | 431 | depends on ARCH_QCOM || (COMPILE_TEST && !GENERIC_ATOMIC64) |
0ae349a0 RC |
432 | select IOMMU_API |
433 | select IOMMU_IO_PGTABLE_LPAE | |
434 | select ARM_DMA_USE_IOMMU | |
435 | help | |
436 | Support for IOMMU on certain Qualcomm SoCs. | |
437 | ||
68255b62 | 438 | endif # IOMMU_SUPPORT |