2011-06-01 23:48:05 +00:00
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# IOMMU_API always gets selected by whoever wants it.
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config IOMMU_API
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bool
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2011-06-02 00:20:08 +00:00
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2011-06-14 13:51:54 +00:00
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menuconfig IOMMU_SUPPORT
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bool "IOMMU Hardware Support"
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default y
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---help---
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Say Y here if you want to compile device drivers for IO Memory
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Management Units into the kernel. These devices usually allow to
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remap DMA requests and/or remap interrupts from other devices on the
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system.
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if IOMMU_SUPPORT
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2012-06-25 11:23:54 +00:00
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config OF_IOMMU
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def_bool y
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depends on OF
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2013-07-15 04:50:57 +00:00
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config FSL_PAMU
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bool "Freescale IOMMU support"
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depends on PPC_E500MC
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select IOMMU_API
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select GENERIC_ALLOCATOR
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help
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Freescale PAMU support. PAMU is the IOMMU present on Freescale QorIQ platforms.
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PAMU can authorize memory access, remap the memory address, and remap I/O
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transaction types.
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2011-06-02 00:20:08 +00:00
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# MSM IOMMU support
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config MSM_IOMMU
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bool "MSM IOMMU Support"
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depends on ARCH_MSM8X60 || ARCH_MSM8960
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select IOMMU_API
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help
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Support for the IOMMUs found on certain Qualcomm SOCs.
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These IOMMUs allow virtualization of the address space used by most
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cores within the multimedia subsystem.
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If unsure, say N here.
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config IOMMU_PGTABLES_L2
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def_bool y
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depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n
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2011-06-05 15:22:18 +00:00
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# AMD IOMMU support
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config AMD_IOMMU
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bool "AMD IOMMU support"
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select SWIOTLB
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select PCI_MSI
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2011-11-17 16:24:28 +00:00
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select PCI_ATS
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select PCI_PRI
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select PCI_PASID
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2011-06-05 15:22:18 +00:00
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select IOMMU_API
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x86, build, pci: Fix PCI_MSI build on !SMP
Commit ebd97be635 ('PCI: remove ARCH_SUPPORTS_MSI kconfig option')
removed the ARCH_SUPPORTS_MSI option which architectures could select
to indicate that they support MSI. Now, all architectures are supposed
to build fine when MSI support is enabled: instead of having the
architecture tell *when* MSI support can be used, it's up to the
architecture code to ensure that MSI support can be enabled.
On x86, commit ebd97be635 removed the following line:
select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC)
Which meant that MSI support was only available when the local APIC
and I/O APIC were enabled. While this is always true on SMP or x86-64,
it is not necessarily the case on i386 !SMP.
The below patch makes sure that the local APIC and I/O APIC support is
always enabled when MSI support is enabled. To do so, it:
* Ensures the X86_UP_APIC option is not visible when PCI_MSI is
enabled. This is the option that allows, on UP machines, to enable
or not the APIC support. It is already not visible on SMP systems,
or x86-64 systems, for example. We're simply also making it
invisible on i386 MSI systems.
* Ensures that the X86_LOCAL_APIC and X86_IO_APIC options are 'y'
when PCI_MSI is enabled.
Notice that this change requires a change in drivers/iommu/Kconfig to
avoid a recursive Kconfig dependencey. The AMD_IOMMU option selects
PCI_MSI, but was depending on X86_IO_APIC. This dependency is no
longer needed: as soon as PCI_MSI is selected, the presence of
X86_IO_APIC is guaranteed. Moreover, the AMD_IOMMU already depended on
X86_64, which already guaranteed that X86_IO_APIC was enabled, so this
dependency was anyway redundant.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: http://lkml.kernel.org/r/1380794354-9079-1-git-send-email-thomas.petazzoni@free-electrons.com
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-10-03 09:59:14 +00:00
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depends on X86_64 && PCI && ACPI
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2011-06-05 15:22:18 +00:00
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---help---
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With this option you can enable support for AMD IOMMU hardware in
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your system. An IOMMU is a hardware component which provides
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remapping of DMA memory accesses from devices. With an AMD IOMMU you
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2012-04-17 15:01:21 +00:00
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can isolate the DMA memory of different devices and protect the
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2011-06-05 15:22:18 +00:00
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system from misbehaving device drivers or hardware.
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You can find out if your system has an AMD IOMMU if you look into
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your BIOS for an option to enable it or if you have an IVRS ACPI
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table.
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config AMD_IOMMU_STATS
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bool "Export AMD IOMMU statistics to debugfs"
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depends on AMD_IOMMU
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select DEBUG_FS
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---help---
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This option enables code in the AMD IOMMU driver to collect various
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statistics about whats happening in the driver and exports that
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information to userspace via debugfs.
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If unsure, say N.
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2011-06-10 18:42:27 +00:00
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2011-11-09 11:31:15 +00:00
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config AMD_IOMMU_V2
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2013-01-17 02:53:39 +00:00
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tristate "AMD IOMMU Version 2 driver"
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depends on AMD_IOMMU && PROFILING
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2011-11-24 15:21:52 +00:00
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select MMU_NOTIFIER
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2011-11-09 11:31:15 +00:00
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---help---
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This option enables support for the AMD IOMMUv2 features of the IOMMU
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hardware. Select this option if you want to use devices that support
|
2012-04-17 15:01:21 +00:00
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the PCI PRI and PASID interface.
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2011-11-09 11:31:15 +00:00
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2011-06-10 18:42:27 +00:00
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# Intel IOMMU support
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2011-08-24 00:05:25 +00:00
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config DMAR_TABLE
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bool
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config INTEL_IOMMU
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bool "Support for Intel IOMMU using DMA Remapping Devices"
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2011-06-10 18:42:27 +00:00
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depends on PCI_MSI && ACPI && (X86 || IA64_GENERIC)
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select IOMMU_API
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2011-08-24 00:05:25 +00:00
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select DMAR_TABLE
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2011-06-10 18:42:27 +00:00
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help
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DMA remapping (DMAR) devices support enables independent address
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translations for Direct Memory Access (DMA) from devices.
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These DMA remapping devices are reported via ACPI tables
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and include PCI device scope covered by these DMA
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remapping devices.
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2011-08-24 00:05:25 +00:00
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config INTEL_IOMMU_DEFAULT_ON
|
2011-06-10 18:42:27 +00:00
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def_bool y
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2011-08-24 00:05:25 +00:00
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prompt "Enable Intel DMA Remapping Devices by default"
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depends on INTEL_IOMMU
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2011-06-10 18:42:27 +00:00
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help
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Selecting this option will enable a DMAR device at boot time if
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one is found. If this option is not selected, DMAR support can
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be enabled by passing intel_iommu=on to the kernel.
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2011-08-24 00:05:25 +00:00
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config INTEL_IOMMU_BROKEN_GFX_WA
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2011-06-10 18:42:27 +00:00
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bool "Workaround broken graphics drivers (going away soon)"
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2011-08-24 00:05:25 +00:00
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depends on INTEL_IOMMU && BROKEN && X86
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2011-06-10 18:42:27 +00:00
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---help---
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Current Graphics drivers tend to use physical address
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for DMA and avoid using DMA APIs. Setting this config
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option permits the IOMMU driver to set a unity map for
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all the OS-visible memory. Hence the driver can continue
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to use physical addresses for DMA, at least until this
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option is removed in the 2.6.32 kernel.
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2011-08-24 00:05:25 +00:00
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config INTEL_IOMMU_FLOPPY_WA
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2011-06-10 18:42:27 +00:00
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def_bool y
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2011-08-24 00:05:25 +00:00
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depends on INTEL_IOMMU && X86
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2011-06-10 18:42:27 +00:00
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---help---
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Floppy disk drivers are known to bypass DMA API calls
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thereby failing to work when IOMMU is enabled. This
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workaround will setup a 1:1 mapping for the first
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16MiB to make floppy (an ISA device) work.
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2011-08-24 00:05:25 +00:00
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config IRQ_REMAP
|
2013-01-17 02:53:39 +00:00
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bool "Support for Interrupt Remapping"
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depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI
|
2011-08-24 00:05:25 +00:00
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select DMAR_TABLE
|
2011-06-10 18:42:27 +00:00
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---help---
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Supports Interrupt remapping for IO-APIC and MSI devices.
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To use x2apic mode in the CPU's which support x2APIC enhancements or
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to support platforms with CPU's having > 8 bit APIC ID, say Y.
|
2011-06-14 13:51:54 +00:00
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2011-08-15 20:21:41 +00:00
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# OMAP IOMMU support
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config OMAP_IOMMU
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bool "OMAP IOMMU Support"
|
2013-03-05 22:16:48 +00:00
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depends on ARCH_OMAP2PLUS
|
2011-08-15 20:21:41 +00:00
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select IOMMU_API
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config OMAP_IOVMM
|
2011-09-14 14:03:45 +00:00
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tristate "OMAP IO Virtual Memory Manager Support"
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depends on OMAP_IOMMU
|
2011-08-15 20:21:41 +00:00
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config OMAP_IOMMU_DEBUG
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tristate "Export OMAP IOMMU/IOVMM internals in DebugFS"
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depends on OMAP_IOVMM && DEBUG_FS
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help
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Select this to see extensive information about
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the internal state of OMAP IOMMU/IOVMM in debugfs.
|
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Say N unless you know you need this.
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2011-11-16 15:36:37 +00:00
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config TEGRA_IOMMU_GART
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bool "Tegra GART IOMMU Support"
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depends on ARCH_TEGRA_2x_SOC
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select IOMMU_API
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help
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Enables support for remapping discontiguous physical memory
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shared with the operating system into contiguous I/O virtual
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space through the GART (Graphics Address Relocation Table)
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hardware included on Tegra SoCs.
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2011-11-17 05:31:31 +00:00
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config TEGRA_IOMMU_SMMU
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bool "Tegra SMMU IOMMU Support"
|
2013-01-31 10:43:08 +00:00
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depends on ARCH_TEGRA && TEGRA_AHB
|
2011-11-17 05:31:31 +00:00
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select IOMMU_API
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help
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Enables support for remapping discontiguous physical memory
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shared with the operating system into contiguous I/O virtual
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space through the SMMU (System Memory Management Unit)
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hardware included on Tegra SoCs.
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|
2012-05-11 20:56:09 +00:00
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|
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config EXYNOS_IOMMU
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bool "Exynos IOMMU Support"
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depends on ARCH_EXYNOS && EXYNOS_DEV_SYSMMU
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select IOMMU_API
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help
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Support for the IOMMU(System MMU) of Samsung Exynos application
|
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|
processor family. This enables H/W multimedia accellerators to see
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non-linear physical memory chunks as a linear memory in their
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address spaces
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If unsure, say N here.
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config EXYNOS_IOMMU_DEBUG
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bool "Debugging log for Exynos IOMMU"
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depends on EXYNOS_IOMMU
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help
|
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|
|
Select this to see the detailed log message that shows what
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happens in the IOMMU driver
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Say N unless you need kernel log message for IOMMU debugging
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|
2013-01-21 10:54:26 +00:00
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|
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config SHMOBILE_IPMMU
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bool
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config SHMOBILE_IPMMU_TLB
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bool
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config SHMOBILE_IOMMU
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bool "IOMMU for Renesas IPMMU/IPMMUI"
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default n
|
2013-11-16 02:57:42 +00:00
|
|
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depends on ARM
|
2013-01-21 10:54:26 +00:00
|
|
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select IOMMU_API
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select ARM_DMA_USE_IOMMU
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|
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select SHMOBILE_IPMMU
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|
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select SHMOBILE_IPMMU_TLB
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help
|
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|
|
Support for Renesas IPMMU/IPMMUI. This option enables
|
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|
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remapping of DMA memory accesses from all of the IP blocks
|
|
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on the ICB.
|
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Warning: Drivers (including userspace drivers of UIO
|
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devices) of the IP blocks on the ICB *must* use addresses
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allocated from the IPMMU (iova) for DMA with this option
|
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enabled.
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If unsure, say N.
|
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choice
|
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|
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prompt "IPMMU/IPMMUI address space size"
|
|
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|
|
default SHMOBILE_IOMMU_ADDRSIZE_2048MB
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|
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|
|
depends on SHMOBILE_IOMMU
|
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help
|
|
|
|
|
This option sets IPMMU/IPMMUI address space size by
|
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|
|
adjusting the 1st level page table size. The page table size
|
|
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|
|
is calculated as follows:
|
|
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|
|
page table size = number of page table entries * 4 bytes
|
|
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|
|
number of page table entries = address space size / 1 MiB
|
|
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|
For example, when the address space size is 2048 MiB, the
|
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|
|
1st level page table size is 8192 bytes.
|
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|
|
config SHMOBILE_IOMMU_ADDRSIZE_2048MB
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|
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bool "2 GiB"
|
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|
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config SHMOBILE_IOMMU_ADDRSIZE_1024MB
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|
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bool "1 GiB"
|
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|
|
config SHMOBILE_IOMMU_ADDRSIZE_512MB
|
|
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|
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bool "512 MiB"
|
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|
|
config SHMOBILE_IOMMU_ADDRSIZE_256MB
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|
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|
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bool "256 MiB"
|
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|
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config SHMOBILE_IOMMU_ADDRSIZE_128MB
|
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|
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bool "128 MiB"
|
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config SHMOBILE_IOMMU_ADDRSIZE_64MB
|
|
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|
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bool "64 MiB"
|
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|
|
config SHMOBILE_IOMMU_ADDRSIZE_32MB
|
|
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|
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bool "32 MiB"
|
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endchoice
|
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|
|
config SHMOBILE_IOMMU_L1SIZE
|
|
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|
|
int
|
|
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|
|
default 8192 if SHMOBILE_IOMMU_ADDRSIZE_2048MB
|
|
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|
|
default 4096 if SHMOBILE_IOMMU_ADDRSIZE_1024MB
|
|
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|
|
default 2048 if SHMOBILE_IOMMU_ADDRSIZE_512MB
|
|
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|
|
default 1024 if SHMOBILE_IOMMU_ADDRSIZE_256MB
|
|
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|
|
default 512 if SHMOBILE_IOMMU_ADDRSIZE_128MB
|
|
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|
|
default 256 if SHMOBILE_IOMMU_ADDRSIZE_64MB
|
|
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|
|
default 128 if SHMOBILE_IOMMU_ADDRSIZE_32MB
|
|
|
|
|
|
2013-05-21 03:33:09 +00:00
|
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config SPAPR_TCE_IOMMU
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bool "sPAPR TCE IOMMU Support"
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2013-05-21 03:33:11 +00:00
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depends on PPC_POWERNV || PPC_PSERIES
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2013-05-21 03:33:09 +00:00
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select IOMMU_API
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help
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Enables bits of IOMMU API required by VFIO. The iommu_ops
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is not implemented as it is not necessary for VFIO.
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2013-06-24 17:31:25 +00:00
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config ARM_SMMU
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bool "ARM Ltd. System MMU (SMMU) Support"
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depends on ARM64 || (ARM_LPAE && OF)
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select IOMMU_API
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select ARM_DMA_USE_IOMMU if ARM
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help
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Support for implementations of the ARM System MMU architecture
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versions 1 and 2. The driver supports both v7l and v8l table
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formats with 4k and 64k page sizes.
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Say Y here if your SoC includes an IOMMU device implementing
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the ARM SMMU architecture.
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2011-06-14 13:51:54 +00:00
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endif # IOMMU_SUPPORT
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