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authorWill Deacon <will.deacon@arm.com>2014-11-14 20:16:49 +0300
committerWill Deacon <will.deacon@arm.com>2015-01-19 17:46:43 +0300
commitfdb1d7be7c4d452e9735aeb2b60ae8a2fcf0a514 (patch)
tree108b994fbb99aed086654bae4badabc13d9d7adf /drivers/iommu/Kconfig
parenteaa27f34e91a14cdceed26ed6c6793ec1d186115 (diff)
downloadlinux-fdb1d7be7c4d452e9735aeb2b60ae8a2fcf0a514.tar.xz
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>
Diffstat (limited to 'drivers/iommu/Kconfig')
-rw-r--r--drivers/iommu/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 325188eef1c1..3faaa41db8ff 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -13,6 +13,14 @@ menuconfig IOMMU_SUPPORT
if IOMMU_SUPPORT
+menu "Generic IOMMU Pagetable Support"
+
+# Selected by the actual pagetable implementations
+config IOMMU_IO_PGTABLE
+ bool
+
+endmenu
+
config OF_IOMMU
def_bool y
depends on OF && IOMMU_API