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alistair23-linux/drivers/iommu/Kconfig

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drivers: iommu: move to a dedicated folder Create a dedicated folder for iommu drivers, and move the base iommu implementation over there. Grouping the various iommu drivers in a single location will help finding similar problems shared by different platforms, so they could be solved once, in the iommu framework, instead of solved differently (or duplicated) in each driver. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-01 17:48:05 -06:00
# IOMMU_API always gets selected by whoever wants it.
config IOMMU_API
bool
msm: iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested for MSM8X60. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-01 18:20:08 -06:00
iommu: Move iommu Kconfig entries to submenu For better navigation this patch moves the drivers/iommu drivers into its own submenu in Kconfig. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-14 07:51:54 -06:00
menuconfig IOMMU_SUPPORT
bool "IOMMU Hardware Support"
iommu: Disable on !MMU builds A lot of the IOMMU support code does not build if the CPU does not have an MMU itself, and it's not clear if there is any use case for it, so let's just disable it and wait for anybody to need it. This avoids randconfig errors like ../arch/arm/mm/dma-mapping.c: In function '__iommu_alloc_remap': ../arch/arm/mm/dma-mapping.c:1278:34: error: 'VM_ARM_DMA_CONSISTENT' undeclared (first use in this function) area = get_vm_area_caller(size, VM_ARM_DMA_CONSISTENT | VM_USERMAP, ^ ../arch/arm/mm/dma-mapping.c:1278:34: note: each undeclared identifier is reported only once for each function it appears in ../arch/arm/mm/dma-mapping.c: In function '__atomic_get_pages': ../arch/arm/mm/dma-mapping.c:1358:27: error: 'atomic_pool' undeclared (first use in this function) struct dma_pool *pool = &atomic_pool; Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-01-28 07:45:53 -07:00
depends on MMU
iommu: Move iommu Kconfig entries to submenu For better navigation this patch moves the drivers/iommu drivers into its own submenu in Kconfig. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-14 07:51:54 -06:00
default y
---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
system.
if IOMMU_SUPPORT
iommu: introduce generic page table allocation framework This patch introduces a generic framework for allocating page tables for an IOMMU. There are a number of reasons we want to do this: - It avoids duplication of complex table management code in IOMMU drivers that use the same page table format - It removes any coupling with the CPU table format (and even the architecture!) - It defines an API for IOMMU TLB maintenance Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-11-14 10:16:49 -07:00
menu "Generic IOMMU Pagetable Support"
# Selected by the actual pagetable implementations
config IOMMU_IO_PGTABLE
bool
iommu: add ARM LPAE page table allocator A number of IOMMUs found in ARM SoCs can walk architecture-compatible page tables. This patch adds a generic allocator for Stage-1 and Stage-2 v7/v8 long-descriptor page tables. 4k, 16k and 64k pages are supported, with up to 4-levels of walk to cover a 48-bit address space. Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-11-14 10:18:23 -07:00
config IOMMU_IO_PGTABLE_LPAE
bool "ARMv7/v8 Long Descriptor Format"
select IOMMU_IO_PGTABLE
iommu/io-pgtable-arm: Don't use dma_to_phys() In checking whether DMA addresses differ from physical addresses, using dma_to_phys() is actually the wrong thing to do, since it may hide any DMA offset, which is precisely one of the things we are checking for. Simply casting between the two address types, whilst ugly, is in fact the appropriate course of action. Further care (and ugliness) is also necessary in the comparison to avoid truncation if phys_addr_t and dma_addr_t differ in size. We can also reject any device with a fixed DMA offset up-front at page table creation, leaving the allocation-time check for the more subtle cases like bounce buffering due to an incorrect DMA mask. Furthermore, we can then fix the hackish KConfig dependency so that architectures without a dma_to_phys() implementation may still COMPILE_TEST (or even use!) the code. The true dependency is on the DMA API, so use the appropriate symbol for that. Signed-off-by: Robin Murphy <robin.murphy@arm.com> [will: folded in selftest fix from Yong Wu] Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-09-17 10:42:16 -06:00
depends on HAS_DMA && (ARM || ARM64 || COMPILE_TEST)
iommu: add ARM LPAE page table allocator A number of IOMMUs found in ARM SoCs can walk architecture-compatible page tables. This patch adds a generic allocator for Stage-1 and Stage-2 v7/v8 long-descriptor page tables. 4k, 16k and 64k pages are supported, with up to 4-levels of walk to cover a 48-bit address space. Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-11-14 10:18:23 -07:00
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.
iommu: add self-consistency tests to ARM LPAE IO page table allocator This patch adds a series of basic self-consistency tests to the ARM LPAE IO page table allocator that exercise corner cases in map/unmap, as well as testing all valid configurations of pagesize, ias and stage. Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-11-17 16:31:12 -07:00
config IOMMU_IO_PGTABLE_LPAE_SELFTEST
bool "LPAE selftests"
depends on IOMMU_IO_PGTABLE_LPAE
help
Enable self-tests for LPAE page table allocator. This performs
a series of page-table consistency checks during boot.
If unsure, say N here.
iommu/io-pgtable: Add ARMv7 short descriptor support Add a nearly-complete ARMv7 short descriptor implementation, omitting only a few legacy and CPU-centric aspects which shouldn't be necessary for IOMMU API use anyway. Reviewed-by: Yong Wu <yong.wu@mediatek.com> Tested-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-01-26 10:13:13 -07:00
config IOMMU_IO_PGTABLE_ARMV7S
bool "ARMv7/v8 Short Descriptor Format"
select IOMMU_IO_PGTABLE
depends on HAS_DMA && (ARM || ARM64 || COMPILE_TEST)
help
Enable support for the ARM Short-descriptor pagetable format.
This supports 32-bit virtual and physical addresses mapped using
2-level tables with 4KB pages/1MB sections, and contiguous entries
for 64KB pages/16MB supersections if indicated by the IOMMU driver.
config IOMMU_IO_PGTABLE_ARMV7S_SELFTEST
bool "ARMv7s selftests"
depends on IOMMU_IO_PGTABLE_ARMV7S
help
Enable self-tests for ARMv7s page table allocator. This performs
a series of page-table consistency checks during boot.
If unsure, say N here.
iommu: introduce generic page table allocation framework This patch introduces a generic framework for allocating page tables for an IOMMU. There are a number of reasons we want to do this: - It avoids duplication of complex table management code in IOMMU drivers that use the same page table format - It removes any coupling with the CPU table format (and even the architecture!) - It defines an API for IOMMU TLB maintenance Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-11-14 10:16:49 -07:00
endmenu
iommu: Allow building iova.c independently In preparation for sharing the IOVA allocator, split it out under its own Kconfig symbol. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-01-12 10:51:13 -07:00
config IOMMU_IOVA
iommu: Make the iova library a module The iova library has use outside the intel-iommu driver, thus make it a module. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2015-07-13 05:31:30 -06:00
tristate
iommu: Allow building iova.c independently In preparation for sharing the IOVA allocator, split it out under its own Kconfig symbol. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-01-12 10:51:13 -07:00
iommu: Add DMA window parser, of_get_dma_window() This code was based on: "arch/microblaze/kernel/prom_parse.c" "arch/powerpc/kernel/prom_parse.c" Can replace "of_parse_dma_window()" in the above. This supports different formats flexibly. "prefix" can be configured if any. "busno" and "index" are optionally specified. Set NULL and 0 if not used. Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-06-25 05:23:54 -06:00
config OF_IOMMU
def_bool y
iommu: provide helper function to configure an IOMMU for an of master The generic IOMMU device-tree bindings can be used to add arbitrary OF masters to an IOMMU with a compliant binding. This patch introduces of_iommu_configure, which does exactly that. Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Joerg Roedel <jroedel@suse.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-08-27 09:20:32 -06:00
depends on OF && IOMMU_API
iommu: Add DMA window parser, of_get_dma_window() This code was based on: "arch/microblaze/kernel/prom_parse.c" "arch/powerpc/kernel/prom_parse.c" Can replace "of_parse_dma_window()" in the above. This supports different formats flexibly. "prefix" can be configured if any. "busno" and "index" are optionally specified. Set NULL and 0 if not used. Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-06-25 05:23:54 -06:00
iommu: Implement common IOMMU ops for DMA mapping Taking inspiration from the existing arch/arm code, break out some generic functions to interface the DMA-API to the IOMMU-API. This will do the bulk of the heavy lifting for IOMMU-backed dma-mapping. Since associating an IOVA allocator with an IOMMU domain is a fairly common need, rather than introduce yet another private structure just to do this for ourselves, extend the top-level struct iommu_domain with the notion. A simple opaque cookie allows reuse by other IOMMU API users with their various different incompatible allocator types. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-10-01 13:13:58 -06:00
# IOMMU-agnostic DMA-mapping layer
config IOMMU_DMA
bool
select IOMMU_API
select IOMMU_IOVA
iommu/dma: Fix NEED_SG_DMA_LENGTH dependency IOMMU_DMA does indeed depend on scatterlists having a DMA length, but the NEED_SG_DMA_LENGTH symbol should be selected, not depended upon. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-29 04:13:39 -07:00
select NEED_SG_DMA_LENGTH
iommu: Implement common IOMMU ops for DMA mapping Taking inspiration from the existing arch/arm code, break out some generic functions to interface the DMA-API to the IOMMU-API. This will do the bulk of the heavy lifting for IOMMU-backed dma-mapping. Since associating an IOVA allocator with an IOMMU domain is a fairly common need, rather than introduce yet another private structure just to do this for ourselves, extend the top-level struct iommu_domain with the notion. A simple opaque cookie allows reuse by other IOMMU API users with their various different incompatible allocator types. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-10-01 13:13:58 -06:00
iommu/fsl: Freescale PAMU driver and iommu implementation. Following is a brief description of the PAMU hardware: PAMU determines what action to take and whether to authorize the action on the basis of the memory address, a Logical IO Device Number (LIODN), and PAACT table (logically) indexed by LIODN and address. Hardware devices which need to access memory must provide an LIODN in addition to the memory address. Peripheral Access Authorization and Control Tables (PAACTs) are the primary data structures used by PAMU. A PAACT is a table of peripheral access authorization and control entries (PAACE).Each PAACE defines the range of I/O bus address space that is accessible by the LIOD and the associated access capabilities. There are two types of PAACTs: primary PAACT (PPAACT) and secondary PAACT (SPAACT).A given physical I/O device may be able to act as one or more independent logical I/O devices (LIODs). Each such logical I/O device is assigned an identifier called logical I/O device number (LIODN). A LIODN is allocated a contiguous portion of the I/O bus address space called the DSA window for performing DSA operations. The DSA window may optionally be divided into multiple sub-windows, each of which may be used to map to a region in system storage space. The first sub-window is referred to as the primary sub-window and the remaining are called secondary sub-windows. This patch provides the PAMU driver (fsl_pamu.c) and the corresponding IOMMU API implementation (fsl_pamu_domain.c). The PAMU hardware driver (fsl_pamu.c) has been derived from the work done by Ashish Kalra and Timur Tabi. [For iommu group support] Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Timur Tabi <timur@tabi.org> Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-07-14 22:50:57 -06:00
config FSL_PAMU
bool "Freescale IOMMU support"
powerpc: Fix incorrect PPC32 PAMU dependency The Freescale PAMU can be enabled on both 32 and 64-bit Power chips. Commit 477ab7a19ce restricted PAMU to PPC32. PPC covers both. Signed-off-by: Andy Fleming <afleming@gmail.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-03-16 22:15:44 -06:00
depends on PPC_E500MC || (COMPILE_TEST && PPC)
iommu/fsl: Freescale PAMU driver and iommu implementation. Following is a brief description of the PAMU hardware: PAMU determines what action to take and whether to authorize the action on the basis of the memory address, a Logical IO Device Number (LIODN), and PAACT table (logically) indexed by LIODN and address. Hardware devices which need to access memory must provide an LIODN in addition to the memory address. Peripheral Access Authorization and Control Tables (PAACTs) are the primary data structures used by PAMU. A PAACT is a table of peripheral access authorization and control entries (PAACE).Each PAACE defines the range of I/O bus address space that is accessible by the LIOD and the associated access capabilities. There are two types of PAACTs: primary PAACT (PPAACT) and secondary PAACT (SPAACT).A given physical I/O device may be able to act as one or more independent logical I/O devices (LIODs). Each such logical I/O device is assigned an identifier called logical I/O device number (LIODN). A LIODN is allocated a contiguous portion of the I/O bus address space called the DSA window for performing DSA operations. The DSA window may optionally be divided into multiple sub-windows, each of which may be used to map to a region in system storage space. The first sub-window is referred to as the primary sub-window and the remaining are called secondary sub-windows. This patch provides the PAMU driver (fsl_pamu.c) and the corresponding IOMMU API implementation (fsl_pamu_domain.c). The PAMU hardware driver (fsl_pamu.c) has been derived from the work done by Ashish Kalra and Timur Tabi. [For iommu group support] Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Timur Tabi <timur@tabi.org> Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-07-14 22:50:57 -06:00
select IOMMU_API
select GENERIC_ALLOCATOR
help
Freescale PAMU support. PAMU is the IOMMU present on Freescale QorIQ platforms.
PAMU can authorize memory access, remap the memory address, and remap I/O
transaction types.
msm: iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested for MSM8X60. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-01 18:20:08 -06:00
# MSM IOMMU support
config MSM_IOMMU
bool "MSM IOMMU Support"
iommu: Make more drivers depend on COMPILE_TEST For easier compile testing of these iommu drivers. Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-01-20 08:13:33 -07:00
depends on ARM
depends on ARCH_MSM8X60 || ARCH_MSM8960 || COMPILE_TEST
iommu/msm: Mark driver BROKEN The MSM IOMMU driver unconditionally calls bus_set_iommu(), which is a very stupid thing to do on multi-platform kernels. While marking the driver BROKEN may seem a little extreme, there is no other way to make the driver skip initialization. One of the problems is that it doesn't have devicetree binding documentation and the driver doesn't contain a struct of_device_id table either, so no way to check that it is indeed valid to set up the IOMMU operations for this driver. This fixes a problem on Tegra20 where the DRM driver will try to use the obviously non-existent MSM IOMMU. Marking the driver BROKEN shouldn't do any harm, since there aren't any users currently. There is no struct of_device_id table, so the device can't be instantiated from device tree, and I couldn't find any code that would instantiate a matching platform_device either, so the driver is effectively unused. Reported-by: Nicolas Chauvet <kwizart@gmail.com> Cc: David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Olav Haugan <ohaugan@codeaurora.org> Acked-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-02-06 03:44:08 -07:00
depends on BROKEN
msm: iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested for MSM8X60. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-01 18:20:08 -06:00
select IOMMU_API
help
Support for the IOMMUs found on certain Qualcomm SOCs.
These IOMMUs allow virtualization of the address space used by most
cores within the multimedia subsystem.
If unsure, say N here.
config IOMMU_PGTABLES_L2
def_bool y
depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n
x86: amd_iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-05 09:22:18 -06:00
# AMD IOMMU support
config AMD_IOMMU
bool "AMD IOMMU support"
select SWIOTLB
select PCI_MSI
iommu/amd: Add support for IOMMUv2 domain mode This patch adds support for protection domains that implement two-level paging for devices. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-17 09:24:28 -07:00
select PCI_ATS
select PCI_PRI
select PCI_PASID
x86: amd_iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-05 09:22:18 -06:00
select IOMMU_API
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 03:59:14 -06:00
depends on X86_64 && PCI && ACPI
x86: amd_iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-05 09:22:18 -06:00
---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
Fix "the the" in various Kconfig Fix typo "the the" in various Kconfig. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-04-17 09:01:21 -06:00
can isolate the DMA memory of different devices and protect the
x86: amd_iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-05 09:22:18 -06:00
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.
iommu/amd: Add driver stub for AMD IOMMUv2 support Add a Kconfig option for the optional driver. Since it is optional it can be compiled as a module and will only be loaded when required by another driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-09 04:31:15 -07:00
config AMD_IOMMU_V2
drivers/iommu: remove depends on CONFIG_EXPERIMENTAL The CONFIG_EXPERIMENTAL config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it from any "depends on" lines in Kconfigs. CC: Joerg Roedel <joerg.roedel@amd.com> CC: Hiroshi DOYU <hdoyu@nvidia.com> CC: Jiri Kosina <jkosina@suse.cz> CC: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-16 19:53:39 -07:00
tristate "AMD IOMMU Version 2 driver"
iommu/amd: Drop oprofile dependency a40d4c67d7de ("iommu/amd: Implement mmu_notifier_release call-back") removed the oprofile task_exit notifier hack^Wusage but forgot to readjust the Kconfig dependency. Fix that. Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-07-10 04:44:56 -06:00
depends on AMD_IOMMU
iommu/amd: Implement notifiers for IOMMUv2 Since pages are not pinned anymore we need notifications when the VMM changes the page-tables. Use mmu_notifiers for that. Also use the task_exit notifier from the profiling subsystem to shutdown all contexts related to this task. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-24 08:21:52 -07:00
select MMU_NOTIFIER
iommu/amd: Add driver stub for AMD IOMMUv2 support Add a Kconfig option for the optional driver. Since it is optional it can be compiled as a module and will only be loaded when required by another driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-09 04:31:15 -07:00
---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
Fix "the the" in various Kconfig Fix typo "the the" in various Kconfig. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-04-17 09:01:21 -06:00
the PCI PRI and PASID interface.
iommu/amd: Add driver stub for AMD IOMMUv2 support Add a Kconfig option for the optional driver. Since it is optional it can be compiled as a module and will only be loaded when required by another driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-09 04:31:15 -07:00
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
# Intel IOMMU support
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
config DMAR_TABLE
bool
config INTEL_IOMMU
bool "Support for Intel IOMMU using DMA Remapping Devices"
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
depends on PCI_MSI && ACPI && (X86 || IA64_GENERIC)
select IOMMU_API
iommu: Allow building iova.c independently In preparation for sharing the IOVA allocator, split it out under its own Kconfig symbol. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-01-12 10:51:13 -07:00
select IOMMU_IOVA
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
select DMAR_TABLE
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
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.
iommu/vt-d: Add initial support for PASID tables Add CONFIG_INTEL_IOMMU_SVM, and allocate PASID tables on supported hardware. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2015-03-24 08:54:56 -06:00
config INTEL_IOMMU_SVM
bool "Support for Shared Virtual Memory with Intel IOMMU"
depends on INTEL_IOMMU && X86
iommu/vt-d: Always enable PASID/PRI PCI capabilities before ATS The behaviour if you enable PASID support after ATS is undefined. So we have to enable it first, even if we don't know whether we'll need it. This is safe enough; unless we set up a context that permits it, the device can't actually *do* anything with it. Also shift the feature detction to dmar_insert_one_dev_info() as it only needs to happen once. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2015-10-12 07:17:37 -06:00
select PCI_PASID
iommu/vt-d: Add basic SVM PASID support This provides basic PASID support for endpoint devices, tested with a version of the i915 driver. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2015-09-09 04:40:47 -06:00
select MMU_NOTIFIER
iommu/vt-d: Add initial support for PASID tables Add CONFIG_INTEL_IOMMU_SVM, and allocate PASID tables on supported hardware. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2015-03-24 08:54:56 -06:00
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).
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
config INTEL_IOMMU_DEFAULT_ON
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
def_bool y
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
prompt "Enable Intel DMA Remapping Devices by default"
depends on INTEL_IOMMU
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
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.
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
config INTEL_IOMMU_BROKEN_GFX_WA
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
bool "Workaround broken graphics drivers (going away soon)"
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
depends on INTEL_IOMMU && BROKEN && X86
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
---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.
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
config INTEL_IOMMU_FLOPPY_WA
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
def_bool y
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
depends on INTEL_IOMMU && X86
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
---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.
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
config IRQ_REMAP
drivers/iommu: remove depends on CONFIG_EXPERIMENTAL The CONFIG_EXPERIMENTAL config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it from any "depends on" lines in Kconfigs. CC: Joerg Roedel <joerg.roedel@amd.com> CC: Hiroshi DOYU <hdoyu@nvidia.com> CC: Jiri Kosina <jkosina@suse.cz> CC: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-16 19:53:39 -07:00
bool "Support for Interrupt Remapping"
depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI
iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-23 18:05:25 -06:00
select DMAR_TABLE
x86/ia64: intel-iommu: move to drivers/iommu/ This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge() has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled in this patch, too. As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it. Compile-tested on x86_64. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-10 12:42:27 -06:00
---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.
iommu: Move iommu Kconfig entries to submenu For better navigation this patch moves the drivers/iommu drivers into its own submenu in Kconfig. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-14 07:51:54 -06:00
omap: iommu/iovmm: move to dedicated iommu folder Move OMAP's iommu drivers to the dedicated iommu drivers folder. While OMAP's iovmm (virtual memory manager) driver does not strictly belong to the iommu drivers folder, move it there as well, because it's by no means OMAP-specific (in concept. technically it is still coupled with OMAP's iommu). Eventually, iovmm will be completely replaced with the generic, iommu-based, dma-mapping API. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-08-15 14:21:41 -06:00
# OMAP IOMMU support
config OMAP_IOMMU
bool "OMAP IOMMU Support"
iommu: Make more drivers depend on COMPILE_TEST For easier compile testing of these iommu drivers. Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-01-20 08:13:33 -07:00
depends on ARM && MMU
depends on ARCH_OMAP2PLUS || COMPILE_TEST
omap: iommu/iovmm: move to dedicated iommu folder Move OMAP's iommu drivers to the dedicated iommu drivers folder. While OMAP's iovmm (virtual memory manager) driver does not strictly belong to the iommu drivers folder, move it there as well, because it's by no means OMAP-specific (in concept. technically it is still coupled with OMAP's iommu). Eventually, iovmm will be completely replaced with the generic, iommu-based, dma-mapping API. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-08-15 14:21:41 -06:00
select IOMMU_API
break kconfig dependency loop After adding virtio-gpu I get this funky kconfig dependency loop. scripts/kconfig/conf --oldconfig Kconfig drivers/video/fbdev/Kconfig:5:error: recursive dependency detected! drivers/video/fbdev/Kconfig:5: symbol FB is selected by DRM_KMS_FB_HELPER drivers/gpu/drm/Kconfig:34: symbol DRM_KMS_FB_HELPER is selected by DRM_VIRTIO_GPU drivers/gpu/drm/virtio/Kconfig:1: symbol DRM_VIRTIO_GPU depends on VIRTIO drivers/virtio/Kconfig:1: symbol VIRTIO is selected by REMOTEPROC drivers/remoteproc/Kconfig:4: symbol REMOTEPROC is selected by OMAP_REMOTEPROC drivers/remoteproc/Kconfig:12: symbol OMAP_REMOTEPROC depends on OMAP_IOMMU drivers/iommu/Kconfig:141: symbol OMAP_IOMMU is selected by VIDEO_OMAP3 drivers/media/platform/Kconfig:96: symbol VIDEO_OMAP3 depends on VIDEO_V4L2 drivers/media/v4l2-core/Kconfig:6: symbol VIDEO_V4L2 depends on I2C drivers/i2c/Kconfig:7: symbol I2C is selected by FB_DDC drivers/video/fbdev/Kconfig:59: symbol FB_DDC is selected by FB_CYBER2000_DDC drivers/video/fbdev/Kconfig:374: symbol FB_CYBER2000_DDC depends on FB_CYBER2000 drivers/video/fbdev/Kconfig:362: symbol FB_CYBER2000 depends on FB Making VIDEO_OMAP3 depend on OMAP_IOMMU instead of selecting it breaks the loop, which looks like the best way to handle it to me. Updated OMAP_IOMMU help text accordingly. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-11-11 01:17:00 -07:00
---help---
The OMAP3 media platform drivers depend on iommu support,
if you need them say Y here.
omap: iommu/iovmm: move to dedicated iommu folder Move OMAP's iommu drivers to the dedicated iommu drivers folder. While OMAP's iovmm (virtual memory manager) driver does not strictly belong to the iommu drivers folder, move it there as well, because it's by no means OMAP-specific (in concept. technically it is still coupled with OMAP's iommu). Eventually, iovmm will be completely replaced with the generic, iommu-based, dma-mapping API. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-08-15 14:21:41 -06:00
config OMAP_IOMMU_DEBUG
iommu/omap: Integrate omap-iommu-debug into omap-iommu The debugfs support for OMAP IOMMU is currently implemented as a module, warranting certain OMAP-specific IOMMU API to be exported. The OMAP IOMMU, when enabled, can only be built-in into the kernel, so integrate the OMAP IOMMU debug module into the OMAP IOMMU driver. This helps in eliminating the need to export most of the current OMAP IOMMU API. The following are the main changes: - The debugfs directory and entry creation logic is reversed, the calls are invoked by the OMAP IOMMU driver now. - The current iffy circular logic of adding IOMMU archdata to the IOMMU devices itself to get a pointer to the omap_iommu object in the debugfs support code is replaced by directly using the omap_iommu structure while creating the debugfs entries. - The debugfs root directory is renamed from the generic name "iommu" to a specific name "omap_iommu". - Unneeded headers have also been cleaned up while at this. - There will no longer be a omap-iommu-debug.ko module after this patch. - The OMAP_IOMMU_DEBUG Kconfig option is converted to boolean only, the OMAP IOMMU debugfs support is built alongside the OMAP IOMMU driver only when this option is enabled. Signed-off-by: Suman Anna <s-anna@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-10-22 16:22:30 -06:00
bool "Export OMAP IOMMU internals in DebugFS"
depends on OMAP_IOMMU && DEBUG_FS
---help---
Select this to see extensive information about
the internal state of OMAP IOMMU in debugfs.
omap: iommu/iovmm: move to dedicated iommu folder Move OMAP's iommu drivers to the dedicated iommu drivers folder. While OMAP's iovmm (virtual memory manager) driver does not strictly belong to the iommu drivers folder, move it there as well, because it's by no means OMAP-specific (in concept. technically it is still coupled with OMAP's iommu). Eventually, iovmm will be completely replaced with the generic, iommu-based, dma-mapping API. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-08-15 14:21:41 -06:00
iommu/omap: Integrate omap-iommu-debug into omap-iommu The debugfs support for OMAP IOMMU is currently implemented as a module, warranting certain OMAP-specific IOMMU API to be exported. The OMAP IOMMU, when enabled, can only be built-in into the kernel, so integrate the OMAP IOMMU debug module into the OMAP IOMMU driver. This helps in eliminating the need to export most of the current OMAP IOMMU API. The following are the main changes: - The debugfs directory and entry creation logic is reversed, the calls are invoked by the OMAP IOMMU driver now. - The current iffy circular logic of adding IOMMU archdata to the IOMMU devices itself to get a pointer to the omap_iommu object in the debugfs support code is replaced by directly using the omap_iommu structure while creating the debugfs entries. - The debugfs root directory is renamed from the generic name "iommu" to a specific name "omap_iommu". - Unneeded headers have also been cleaned up while at this. - There will no longer be a omap-iommu-debug.ko module after this patch. - The OMAP_IOMMU_DEBUG Kconfig option is converted to boolean only, the OMAP IOMMU debugfs support is built alongside the OMAP IOMMU driver only when this option is enabled. Signed-off-by: Suman Anna <s-anna@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-10-22 16:22:30 -06:00
Say N unless you know you need this.
omap: iommu/iovmm: move to dedicated iommu folder Move OMAP's iommu drivers to the dedicated iommu drivers folder. While OMAP's iovmm (virtual memory manager) driver does not strictly belong to the iommu drivers folder, move it there as well, because it's by no means OMAP-specific (in concept. technically it is still coupled with OMAP's iommu). Eventually, iovmm will be completely replaced with the generic, iommu-based, dma-mapping API. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-08-15 14:21:41 -06:00
iommu/rockchip: rk3288 iommu driver The rk3288 has several iommus. Each iommu belongs to a single master device. There is one device (ISP) that has two slave iommus, but that case is not yet supported by this driver. At subsys init, the iommu driver registers itself as the iommu driver for the platform bus. The master devices find their slave iommus using the "iommus" field in their devicetree description. Since each slave iommu belongs to exactly one master, their is no additional data needed at probe to associate a slave with its master. An iommu device's power domain, clock and irq are all shared with its master device, and the master device must be careful to attach from the iommu only after powering and clocking it (and leave it powered and clocked before detaching). Because their is no guarantee what the status of the iommu is at probe, and since the driver does not even know if the device is powered, we delay requesting its irq until the master device attaches, at which point we have a guarantee that the device is powered and clocked and we can reset it and disable its interrupt mask. An iommu_domain describes a virtual iova address space. Each iommu_domain has a corresponding page table that lists the mappings from iova to physical address. For the rk3288 iommu, the page table has two levels: The Level 1 "directory_table" has 1024 4-byte dte entries. Each dte points to a level 2 "page_table". Each level 2 page_table has 1024 4-byte pte entries. Each pte points to a 4 KiB page of memory. An iommu_domain is created when a dma_iommu_mapping is created via arm_iommu_create_mapping. Master devices can then attach themselves to this mapping (or attach the mapping to themselves?) by calling arm_iommu_attach_device(). This in turn instructs the iommu driver to write the page table's physical address into the slave iommu's "Directory Table Entry" (DTE) register. In fact multiple master devices, each with their own slave iommu device, can all attach to the same mapping. The iommus for these devices will share the same iommu_domain and therefore point to the same page table. Thus, the iommu domain maintains a list of iommu devices which are attached. This driver relies on the iommu core to ensure that all devices have detached before destroying a domain. v6: - add .add/remove_device() callbacks. - parse platform_device device tree nodes for "iommus" property - store platform device pointer as group iommudata - Check for existence of iommu group instead of relying on a dev_get_drvdata() to return NULL for a NULL device. v7: - fixup some strings. - In rk_iommu_disable_paging() # and % were reversed. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Simon Xue <xxm@rock-chips.com> Reviewed-by: Grant Grundler <grundler@chromium.org> Reviewed-by: Stéphane Marchesin <marcheu@chromium.org> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-11-02 19:53:27 -07:00
config ROCKCHIP_IOMMU
bool "Rockchip IOMMU Support"
iommu/rockchip: Allow to compile with COMPILE_TEST Add optional CONFIG_COMPILE_TEST to dependency list. Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-11-03 10:16:56 -07:00
depends on ARM
depends on ARCH_ROCKCHIP || COMPILE_TEST
iommu/rockchip: rk3288 iommu driver The rk3288 has several iommus. Each iommu belongs to a single master device. There is one device (ISP) that has two slave iommus, but that case is not yet supported by this driver. At subsys init, the iommu driver registers itself as the iommu driver for the platform bus. The master devices find their slave iommus using the "iommus" field in their devicetree description. Since each slave iommu belongs to exactly one master, their is no additional data needed at probe to associate a slave with its master. An iommu device's power domain, clock and irq are all shared with its master device, and the master device must be careful to attach from the iommu only after powering and clocking it (and leave it powered and clocked before detaching). Because their is no guarantee what the status of the iommu is at probe, and since the driver does not even know if the device is powered, we delay requesting its irq until the master device attaches, at which point we have a guarantee that the device is powered and clocked and we can reset it and disable its interrupt mask. An iommu_domain describes a virtual iova address space. Each iommu_domain has a corresponding page table that lists the mappings from iova to physical address. For the rk3288 iommu, the page table has two levels: The Level 1 "directory_table" has 1024 4-byte dte entries. Each dte points to a level 2 "page_table". Each level 2 page_table has 1024 4-byte pte entries. Each pte points to a 4 KiB page of memory. An iommu_domain is created when a dma_iommu_mapping is created via arm_iommu_create_mapping. Master devices can then attach themselves to this mapping (or attach the mapping to themselves?) by calling arm_iommu_attach_device(). This in turn instructs the iommu driver to write the page table's physical address into the slave iommu's "Directory Table Entry" (DTE) register. In fact multiple master devices, each with their own slave iommu device, can all attach to the same mapping. The iommus for these devices will share the same iommu_domain and therefore point to the same page table. Thus, the iommu domain maintains a list of iommu devices which are attached. This driver relies on the iommu core to ensure that all devices have detached before destroying a domain. v6: - add .add/remove_device() callbacks. - parse platform_device device tree nodes for "iommus" property - store platform device pointer as group iommudata - Check for existence of iommu group instead of relying on a dev_get_drvdata() to return NULL for a NULL device. v7: - fixup some strings. - In rk_iommu_disable_paging() # and % were reversed. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Simon Xue <xxm@rock-chips.com> Reviewed-by: Grant Grundler <grundler@chromium.org> Reviewed-by: Stéphane Marchesin <marcheu@chromium.org> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-11-02 19:53:27 -07:00
select IOMMU_API
select ARM_DMA_USE_IOMMU
help
Support for IOMMUs found on Rockchip rk32xx SOCs.
These IOMMUs allow virtualization of the address space used by most
cores within the multimedia subsystem.
Say Y here if you are using a Rockchip SoC that includes an IOMMU
device.
omap: iommu/iovmm: move to dedicated iommu folder Move OMAP's iommu drivers to the dedicated iommu drivers folder. While OMAP's iovmm (virtual memory manager) driver does not strictly belong to the iommu drivers folder, move it there as well, because it's by no means OMAP-specific (in concept. technically it is still coupled with OMAP's iommu). Eventually, iovmm will be completely replaced with the generic, iommu-based, dma-mapping API. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-08-15 14:21:41 -06:00
ARM: IOMMU: Tegra20: Add iommu_ops for GART driver Tegra 20 IOMMU H/W, GART (Graphics Address Relocation Table). This patch implements struct iommu_ops for GART for the upper IOMMU API. This H/W module supports only single virtual address space(domain), and manages a single level 1-to-1 mapping H/W translation page table. [With small fixes by Joerg Roedel] Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-16 08:36:37 -07:00
config TEGRA_IOMMU_GART
bool "Tegra GART IOMMU Support"
depends on ARCH_TEGRA_2x_SOC
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.
ARM: IOMMU: Tegra30: Add iommu_ops for SMMU driver Tegra 30 IOMMU H/W, SMMU (System Memory Management Unit). This patch implements struct iommu_ops for SMMU for the upper IOMMU API. This H/W module supports multiple virtual address spaces(domain x4), and manages 2 level H/W translation pagetable. Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-16 22:31:31 -07:00
config TEGRA_IOMMU_SMMU
memory: Add NVIDIA Tegra memory controller support The memory controller on NVIDIA Tegra exposes various knobs that can be used to tune the behaviour of the clients attached to it. Currently this driver sets up the latency allowance registers to the HW defaults. Eventually an API should be exported by this driver (via a custom API or a generic subsystem) to allow clients to register latency requirements. This driver also registers an IOMMU (SMMU) that's implemented by the memory controller. It is supported on Tegra30, Tegra114 and Tegra124 currently. Tegra20 has a GART instead. The Tegra SMMU operates on memory clients and SWGROUPs. A memory client is a unidirectional, special-purpose DMA master. A SWGROUP represents a set of memory clients that form a logical functional unit corresponding to a single device. Typically a device has two clients: one client for read transactions and one client for write transactions, but there are also devices that have only read clients, but many of them (such as the display controllers). Because there is no 1:1 relationship between memory clients and devices the driver keeps a table of memory clients and the SWGROUPs that they belong to per SoC. Note that this is an exception and due to the fact that the SMMU is tightly integrated with the rest of the Tegra SoC. The use of these tables is discouraged in drivers for generic IOMMU devices such as the ARM SMMU because the same IOMMU could be used in any number of SoCs and keeping such tables for each SoC would not scale. Acked-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-04-16 01:24:44 -06:00
bool "NVIDIA Tegra SMMU Support"
depends on ARCH_TEGRA
depends on TEGRA_AHB
depends on TEGRA_MC
ARM: IOMMU: Tegra30: Add iommu_ops for SMMU driver Tegra 30 IOMMU H/W, SMMU (System Memory Management Unit). This patch implements struct iommu_ops for SMMU for the upper IOMMU API. This H/W module supports multiple virtual address spaces(domain x4), and manages 2 level H/W translation pagetable. Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-16 22:31:31 -07:00
select IOMMU_API
help
memory: Add NVIDIA Tegra memory controller support The memory controller on NVIDIA Tegra exposes various knobs that can be used to tune the behaviour of the clients attached to it. Currently this driver sets up the latency allowance registers to the HW defaults. Eventually an API should be exported by this driver (via a custom API or a generic subsystem) to allow clients to register latency requirements. This driver also registers an IOMMU (SMMU) that's implemented by the memory controller. It is supported on Tegra30, Tegra114 and Tegra124 currently. Tegra20 has a GART instead. The Tegra SMMU operates on memory clients and SWGROUPs. A memory client is a unidirectional, special-purpose DMA master. A SWGROUP represents a set of memory clients that form a logical functional unit corresponding to a single device. Typically a device has two clients: one client for read transactions and one client for write transactions, but there are also devices that have only read clients, but many of them (such as the display controllers). Because there is no 1:1 relationship between memory clients and devices the driver keeps a table of memory clients and the SWGROUPs that they belong to per SoC. Note that this is an exception and due to the fact that the SMMU is tightly integrated with the rest of the Tegra SoC. The use of these tables is discouraged in drivers for generic IOMMU devices such as the ARM SMMU because the same IOMMU could be used in any number of SoCs and keeping such tables for each SoC would not scale. Acked-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-04-16 01:24:44 -06:00
This driver supports the IOMMU hardware (SMMU) found on NVIDIA Tegra
memory: tegra: Add Tegra210 support Add the table of memory clients and SWGROUPs for Tegra210 to enable SMMU support for this new SoC. Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-03-23 03:45:12 -06:00
SoCs (Tegra30 up to Tegra210).
ARM: IOMMU: Tegra30: Add iommu_ops for SMMU driver Tegra 30 IOMMU H/W, SMMU (System Memory Management Unit). This patch implements struct iommu_ops for SMMU for the upper IOMMU API. This H/W module supports multiple virtual address spaces(domain x4), and manages 2 level H/W translation pagetable. Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-16 22:31:31 -07:00
iommu/exynos: Add iommu driver for EXYNOS Platforms This is the System MMU driver and IOMMU API implementation for EXYNOS SoC platforms. EXYNOS platforms has more than 10 System MMUs dedicated for each multimedia accelerators. The System MMU driver is already in arc/arm/plat-s5p but it is moved to drivers/iommu due to Ohad Ben-Cohen gathered IOMMU drivers there. Any device driver in EXYNOS platforms that needs to control its System MMU must call platform_set_sysmmu() to inform System MMU driver who will control it. platform_set_sysmmu() is defined in <mach/sysmmu.h> Signed-off-by: KyongHo Cho <pullip.cho@samsung.com> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-11 14:56:09 -06:00
config EXYNOS_IOMMU
bool "Exynos IOMMU Support"
iommu/exynos: Add support for v5 SYSMMU This patch adds support for v5 of SYSMMU controller, found in Samsung Exynos 5433 SoCs. The main difference of v5 is support for 36-bit physical address space and some changes in register layout and core clocks hanging. This patch also adds support for ARM64 architecture, which is used by Exynos 5433 SoCs. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-18 07:12:58 -07:00
depends on ARCH_EXYNOS && MMU
iommu/exynos: Add iommu driver for EXYNOS Platforms This is the System MMU driver and IOMMU API implementation for EXYNOS SoC platforms. EXYNOS platforms has more than 10 System MMUs dedicated for each multimedia accelerators. The System MMU driver is already in arc/arm/plat-s5p but it is moved to drivers/iommu due to Ohad Ben-Cohen gathered IOMMU drivers there. Any device driver in EXYNOS platforms that needs to control its System MMU must call platform_set_sysmmu() to inform System MMU driver who will control it. platform_set_sysmmu() is defined in <mach/sysmmu.h> Signed-off-by: KyongHo Cho <pullip.cho@samsung.com> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-11 14:56:09 -06:00
select IOMMU_API
iommu/exynos: Select ARM_DMA_USE_IOMMU For IOMMU to use on Exynos platforms, we need to enable ARM_DMA_USE_IOMMU. It would be better to select it by default when EXYNOS_IOMMU is enabled. Signed-off-by: Tushar Behera <tushar.b@samsung.com> Reviewed-by: Sachin Kamat <sachin.kamat@samsung.com> Reviewed-by: Cho KyongHo <pullip.cho@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-07-04 03:31:08 -06:00
select ARM_DMA_USE_IOMMU
iommu/exynos: Add iommu driver for EXYNOS Platforms This is the System MMU driver and IOMMU API implementation for EXYNOS SoC platforms. EXYNOS platforms has more than 10 System MMUs dedicated for each multimedia accelerators. The System MMU driver is already in arc/arm/plat-s5p but it is moved to drivers/iommu due to Ohad Ben-Cohen gathered IOMMU drivers there. Any device driver in EXYNOS platforms that needs to control its System MMU must call platform_set_sysmmu() to inform System MMU driver who will control it. platform_set_sysmmu() is defined in <mach/sysmmu.h> Signed-off-by: KyongHo Cho <pullip.cho@samsung.com> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-11 14:56:09 -06:00
help
iommu/exynos: Fix trivial typo Fix typo and add missing punctuation. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-21 22:20:55 -06:00
Support for the IOMMU (System MMU) of Samsung Exynos application
processor family. This enables H/W multimedia accelerators to see
non-linear physical memory chunks as linear memory in their
address space.
iommu/exynos: Add iommu driver for EXYNOS Platforms This is the System MMU driver and IOMMU API implementation for EXYNOS SoC platforms. EXYNOS platforms has more than 10 System MMUs dedicated for each multimedia accelerators. The System MMU driver is already in arc/arm/plat-s5p but it is moved to drivers/iommu due to Ohad Ben-Cohen gathered IOMMU drivers there. Any device driver in EXYNOS platforms that needs to control its System MMU must call platform_set_sysmmu() to inform System MMU driver who will control it. platform_set_sysmmu() is defined in <mach/sysmmu.h> Signed-off-by: KyongHo Cho <pullip.cho@samsung.com> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-11 14:56:09 -06:00
If unsure, say N here.
config EXYNOS_IOMMU_DEBUG
bool "Debugging log for Exynos IOMMU"
depends on EXYNOS_IOMMU
help
Select this to see the detailed log message that shows what
iommu/exynos: Fix trivial typo Fix typo and add missing punctuation. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-21 22:20:55 -06:00
happens in the IOMMU driver.
iommu/exynos: Add iommu driver for EXYNOS Platforms This is the System MMU driver and IOMMU API implementation for EXYNOS SoC platforms. EXYNOS platforms has more than 10 System MMUs dedicated for each multimedia accelerators. The System MMU driver is already in arc/arm/plat-s5p but it is moved to drivers/iommu due to Ohad Ben-Cohen gathered IOMMU drivers there. Any device driver in EXYNOS platforms that needs to control its System MMU must call platform_set_sysmmu() to inform System MMU driver who will control it. platform_set_sysmmu() is defined in <mach/sysmmu.h> Signed-off-by: KyongHo Cho <pullip.cho@samsung.com> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-11 14:56:09 -06:00
iommu/exynos: Fix trivial typo Fix typo and add missing punctuation. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-05-21 22:20:55 -06:00
Say N unless you need kernel log message for IOMMU debugging.
iommu/exynos: Add iommu driver for EXYNOS Platforms This is the System MMU driver and IOMMU API implementation for EXYNOS SoC platforms. EXYNOS platforms has more than 10 System MMUs dedicated for each multimedia accelerators. The System MMU driver is already in arc/arm/plat-s5p but it is moved to drivers/iommu due to Ohad Ben-Cohen gathered IOMMU drivers there. Any device driver in EXYNOS platforms that needs to control its System MMU must call platform_set_sysmmu() to inform System MMU driver who will control it. platform_set_sysmmu() is defined in <mach/sysmmu.h> Signed-off-by: KyongHo Cho <pullip.cho@samsung.com> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-11 14:56:09 -06:00
iommu: Add driver for Renesas VMSA-compatible IPMMU Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-04-02 04:47:37 -06:00
config IPMMU_VMSA
bool "Renesas VMSA-compatible IPMMU"
depends on ARM_LPAE
iommu/ipmmu-vmsa: Use ARCH_RENESAS Make use of ARCH_RENESAS in place of ARCH_SHMOBILE. This is part of an ongoing process to migrate from ARCH_SHMOBILE to ARCH_RENESAS the motivation for which being that RENESAS seems to be a more appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-21 18:41:35 -07:00
depends on ARCH_RENESAS || COMPILE_TEST
iommu: Add driver for Renesas VMSA-compatible IPMMU Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-04-02 04:47:37 -06:00
select IOMMU_API
iommu/ipmmu-vmsa: Use the ARM LPAE page table allocator Replace the custom page table allocation implementation with the standard allocator. The driver loses the ability to map 64kB chunkgs using the PTE contiguous hint, hence the removal of the SZ_64K page size from the IOMMU page sizes bitmap. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-01-20 09:30:04 -07:00
select IOMMU_IO_PGTABLE_LPAE
iommu: Add driver for Renesas VMSA-compatible IPMMU Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-04-02 04:47:37 -06:00
select ARM_DMA_USE_IOMMU
help
Support for the Renesas VMSA-compatible IPMMU Renesas found in the
R-Mobile APE6 and R-Car H2/M2 SoCs.
If unsure, say N.
powerpc/vfio: Enable on PowerNV platform This initializes IOMMU groups based on the IOMMU configuration discovered during the PCI scan on POWERNV (POWER non virtualized) platform. The IOMMU groups are to be used later by the VFIO driver, which is used for PCI pass through. It also implements an API for mapping/unmapping pages for guest PCI drivers and providing DMA window properties. This API is going to be used later by QEMU-VFIO to handle h_put_tce hypercalls from the KVM guest. The iommu_put_tce_user_mode() does only a single page mapping as an API for adding many mappings at once is going to be added later. Although this driver has been tested only on the POWERNV platform, it should work on any platform which supports TCE tables. As h_put_tce hypercall is received by the host kernel and processed by the QEMU (what involves calling the host kernel again), performance is not the best - circa 220MB/s on 10Gb ethernet network. To enable VFIO on POWER, enable SPAPR_TCE_IOMMU config option and configure VFIO as required. Cc: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-20 21:33:09 -06:00
config SPAPR_TCE_IOMMU
bool "sPAPR TCE IOMMU Support"
powerpc/vfio: Enable on pSeries platform The enables VFIO on the pSeries platform, enabling user space programs to access PCI devices directly. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Cc: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-20 21:33:11 -06:00
depends on PPC_POWERNV || PPC_PSERIES
powerpc/vfio: Enable on PowerNV platform This initializes IOMMU groups based on the IOMMU configuration discovered during the PCI scan on POWERNV (POWER non virtualized) platform. The IOMMU groups are to be used later by the VFIO driver, which is used for PCI pass through. It also implements an API for mapping/unmapping pages for guest PCI drivers and providing DMA window properties. This API is going to be used later by QEMU-VFIO to handle h_put_tce hypercalls from the KVM guest. The iommu_put_tce_user_mode() does only a single page mapping as an API for adding many mappings at once is going to be added later. Although this driver has been tested only on the POWERNV platform, it should work on any platform which supports TCE tables. As h_put_tce hypercall is received by the host kernel and processed by the QEMU (what involves calling the host kernel again), performance is not the best - circa 220MB/s on 10Gb ethernet network. To enable VFIO on POWER, enable SPAPR_TCE_IOMMU config option and configure VFIO as required. Cc: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-20 21:33:09 -06:00
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.
iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices Version three of the ARM SMMU architecture introduces significant changes and improvements over previous versions of the specification, necessitating a new driver in the Linux kernel. The main change to the programming interface is that the majority of the configuration data has been moved from MMIO registers to in-memory data structures, with communication between the CPU and the SMMU being mediated via in-memory circular queues. This patch adds an initial driver for SMMUv3 to Linux. We currently support pinned stage-1 (DMA) and stage-2 (KVM VFIO) mappings using the generic IO-pgtable code. Cc: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-27 10:25:59 -06:00
# ARM IOMMU support
iommu/arm: Add support for ARM Ltd. System MMU architecture This patch adds support for SMMUs implementing the ARM System MMU architecture versions 1 or 2. Both arm and arm64 are supported, although the v7s descriptor format is not used. Cc: Rob Herring <robherring2@gmail.com> Cc: Andreas Herrmann <andreas.herrmann@calxeda.com> Cc: Olav Haugan <ohaugan@codeaurora.org> Cc: Joerg Roedel <joro@8bytes.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Andreas Herrmann <andreas.herrmann@calxeda.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-06-24 11:31:25 -06:00
config ARM_SMMU
bool "ARM Ltd. System MMU (SMMU) Support"
Merge branches 'arm/renesas', 'arm/smmu', 'arm/omap', 'ppc/pamu', 'x86/amd' and 'core' into next Conflicts: drivers/iommu/Kconfig drivers/iommu/Makefile
2015-02-04 08:53:44 -07:00
depends on (ARM64 || ARM) && MMU
iommu/arm: Add support for ARM Ltd. System MMU architecture This patch adds support for SMMUs implementing the ARM System MMU architecture versions 1 or 2. Both arm and arm64 are supported, although the v7s descriptor format is not used. Cc: Rob Herring <robherring2@gmail.com> Cc: Andreas Herrmann <andreas.herrmann@calxeda.com> Cc: Olav Haugan <ohaugan@codeaurora.org> Cc: Joerg Roedel <joro@8bytes.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Andreas Herrmann <andreas.herrmann@calxeda.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-06-24 11:31:25 -06:00
select IOMMU_API
iommu/arm-smmu: make use of generic LPAE allocator The ARM SMMU can walk LPAE page tables, so make use of the generic allocator. Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-11-14 10:17:54 -07:00
select IOMMU_IO_PGTABLE_LPAE
iommu/arm: Add support for ARM Ltd. System MMU architecture This patch adds support for SMMUs implementing the ARM System MMU architecture versions 1 or 2. Both arm and arm64 are supported, although the v7s descriptor format is not used. Cc: Rob Herring <robherring2@gmail.com> Cc: Andreas Herrmann <andreas.herrmann@calxeda.com> Cc: Olav Haugan <ohaugan@codeaurora.org> Cc: Joerg Roedel <joro@8bytes.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Andreas Herrmann <andreas.herrmann@calxeda.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-06-24 11:31:25 -06:00
select ARM_DMA_USE_IOMMU if ARM
help
Support for implementations of the ARM System MMU architecture
iommu/arm-smmu: make use of generic LPAE allocator The ARM SMMU can walk LPAE page tables, so make use of the generic allocator. Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-11-14 10:17:54 -07:00
versions 1 and 2.
iommu/arm: Add support for ARM Ltd. System MMU architecture This patch adds support for SMMUs implementing the ARM System MMU architecture versions 1 or 2. Both arm and arm64 are supported, although the v7s descriptor format is not used. Cc: Rob Herring <robherring2@gmail.com> Cc: Andreas Herrmann <andreas.herrmann@calxeda.com> Cc: Olav Haugan <ohaugan@codeaurora.org> Cc: Joerg Roedel <joro@8bytes.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Andreas Herrmann <andreas.herrmann@calxeda.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-06-24 11:31:25 -06:00
Say Y here if your SoC includes an IOMMU device implementing
the ARM SMMU architecture.
iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices Version three of the ARM SMMU architecture introduces significant changes and improvements over previous versions of the specification, necessitating a new driver in the Linux kernel. The main change to the programming interface is that the majority of the configuration data has been moved from MMIO registers to in-memory data structures, with communication between the CPU and the SMMU being mediated via in-memory circular queues. This patch adds an initial driver for SMMUv3 to Linux. We currently support pinned stage-1 (DMA) and stage-2 (KVM VFIO) mappings using the generic IO-pgtable code. Cc: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-27 10:25:59 -06:00
config ARM_SMMU_V3
bool "ARM Ltd. System MMU Version 3 (SMMUv3) Support"
depends on ARM64 && PCI
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
iommu/arm-smmu: Add support for MSI on SMMUv3 Despite being a platform device, the SMMUv3 is capable of signaling interrupts using MSIs. Hook it into the platform MSI framework and enjoy faults being reported in a new and exciting way. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> [will: tidied up the binding example and reworked most of the code] Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-10-13 11:32:30 -06:00
select GENERIC_MSI_IRQ_DOMAIN
iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices Version three of the ARM SMMU architecture introduces significant changes and improvements over previous versions of the specification, necessitating a new driver in the Linux kernel. The main change to the programming interface is that the majority of the configuration data has been moved from MMIO registers to in-memory data structures, with communication between the CPU and the SMMU being mediated via in-memory circular queues. This patch adds an initial driver for SMMUv3 to Linux. We currently support pinned stage-1 (DMA) and stage-2 (KVM VFIO) mappings using the generic IO-pgtable code. Cc: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-27 10:25:59 -06:00
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.
iommu/s390: Add iommu api for s390 pci devices This adds an IOMMU API implementation for s390 PCI devices. Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-08-27 07:33:03 -06:00
config S390_IOMMU
def_bool y if S390 && PCI
depends on S390 && PCI
select IOMMU_API
help
Support for the IOMMU API for s390 PCI devices.
iommu/mediatek: Add mt8173 IOMMU driver This patch adds support for mediatek m4u (MultiMedia Memory Management Unit). Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-22 10:20:50 -07:00
config MTK_IOMMU
bool "MTK IOMMU Support"
depends on ARM || ARM64
depends on ARCH_MEDIATEK || COMPILE_TEST
iommu/mediatek: Select ARM_DMA_USE_IOMMU The newly added Mediatek IOMMU driver uses the IOMMU_DMA infrastructure, but unlike other such drivers, it does not select 'ARM_DMA_USE_IOMMU', which is a prerequisite, leading to a link error: warning: (MTK_IOMMU) selects IOMMU_DMA which has unmet direct dependencies (IOMMU_SUPPORT && NEED_SG_DMA_LENGTH) drivers/iommu/built-in.o: In function `iommu_put_dma_cookie': mtk_iommu.c:(.text+0x11fe): undefined reference to `put_iova_domain' drivers/iommu/built-in.o: In function `iommu_dma_init_domain': mtk_iommu.c:(.text+0x1316): undefined reference to `init_iova_domain' drivers/iommu/built-in.o: In function `__iommu_dma_unmap': mtk_iommu.c:(.text+0x1380): undefined reference to `find_iova' This adds the same select that the other drivers have. On a related note, I wonder if we should just always select ARM_DMA_USE_IOMMU whenever any IOMMU driver is enabled. Are there any cases where we would enable an IOMMU but not use it? Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 0df4fabe208d ("iommu/mediatek: Add mt8173 IOMMU driver") Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-29 02:19:06 -07:00
select ARM_DMA_USE_IOMMU
iommu/mediatek: Add mt8173 IOMMU driver This patch adds support for mediatek m4u (MultiMedia Memory Management Unit). Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-22 10:20:50 -07:00
select IOMMU_API
select IOMMU_DMA
select IOMMU_IO_PGTABLE_ARMV7S
select MEMORY
select MTK_SMI
help
Support for the M4U on certain Mediatek SOCs. M4U is MultiMedia
Memory Management Unit. This option enables remapping of DMA memory
accesses for the multimedia subsystem.
If unsure, say N here.
iommu: Move iommu Kconfig entries to submenu For better navigation this patch moves the drivers/iommu drivers into its own submenu in Kconfig. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-14 07:51:54 -06:00
endif # IOMMU_SUPPORT