openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
507,449 Commits 18 Branches 27 Tags 3.4 GiB
Commit Graph

3 Commits

Author SHA1 Message Date
Laurent Pinchart c896c132b0 iommu: io-pgtable-arm: add non-secure quirk 
The quirk causes the Non-Secure bit to be set in all page table entries.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
 2015-01-19 14:46:45 +00:00
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