Commit Graph

6 Commits

Author SHA1 Message Date
Cosmin-Gabriel Samoila 54c6d242fa iommu/io-pgtable: Fix a brace coding style issue.
Fixed a coding style issue.

Signed-off-by: Cosmin-Gabriel Samoila <gabrielcsmo@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-04-05 15:34:29 +02:00
Robin Murphy 507e4c9d19 iommu/io-pgtable: Add helper functions for TLB ops
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>
2016-02-17 14:15:08 +00:00
Robin Murphy e5fc9753b1 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>
2016-02-17 14:14:57 +00:00
Joerg Roedel 2e169bb3cc iommu/io-pgtable-arm: Move init-fn declarations to io-pgtable.h
Avoid extern declarations in c files.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-08-13 19:51:04 +02:00
Will Deacon e1d3c0fd70 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>
2015-01-19 14:46:44 +00:00
Will Deacon fdb1d7be7c 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>
2015-01-19 14:46:43 +00:00