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* iommu/io-pgtable: Fix a brace coding style issue.Cosmin-Gabriel Samoila2016-04-051-2/+1
| | | | | | | Fixed a coding style issue. Signed-off-by: Cosmin-Gabriel Samoila <gabrielcsmo@gmail.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/io-pgtable: Add helper functions for TLB opsRobin Murphy2016-02-171-1/+1
| | | | | | | | | | | Add some simple wrappers to avoid having the guts of the TLB operations spilled all over the page table implementations, and to provide a point to implement extra common functionality. Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
* iommu/io-pgtable: Add ARMv7 short descriptor supportRobin Murphy2016-02-171-0/+3
| | | | | | | | | | | | 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>
* iommu/io-pgtable-arm: Move init-fn declarations to io-pgtable.hJoerg Roedel2015-08-131-5/+0
| | | | | | Avoid extern declarations in c files. Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu: add ARM LPAE page table allocatorWill Deacon2015-01-191-0/+11
| | | | | | | | | | | | 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>
* iommu: introduce generic page table allocation frameworkWill Deacon2015-01-191-0/+71
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>
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