[PATCH v5 0/3] arm64: IOMMU-backed DMA mapping

[Yong Wu]

On Fri, 2015-07-31 at 18:18 +0100, Robin Murphy wrote:
> Hi all,
> 
> Here's an update following Catalin's feedback on v4[1].
> 
> Changes this round:
> - Rebased onto linux-next
>   - IOVA alignment fix applied already
>   - iommu_iova_cache_init() is now iova_cache_get()
> - Tidied up iommu_dma_alloc()
>   - Simplified pgprot handling
>   - Removed redundant memset
>   - Skip coherent page-flushing in a simpler way
> - Spotted a bug in iommu_dma_init_domain() where the checks for
>   reinitialising an existing domain were backwards.
> 
> If it is going to be down to me to tackle all the driver fixes and
> conversion of arch/arm dma_ops, I'd still much rather have this
> code merged first as a stable base to work with (and un-block arm64
> in the meantime). Have we decided yet whether this should go via the
> IOMMU tree or the arm64 tree?

Hi Robin,
   Sorry to disturb you. Is there any plan for the next version of arm64
DMA. If it's yes, when could we get it?
   Thanks very much.

> 
> Thanks,
> Robin.
> 
> [1]:http://thread.gmane.org/gmane.linux.kernel.iommu/10181
> 
> Robin Murphy (3):
>   iommu: Implement common IOMMU ops for DMA mapping
>   arm64: Add IOMMU dma_ops
>   arm64: Hook up IOMMU dma_ops
> 
>  arch/arm64/Kconfig                   |   1 +
>  arch/arm64/include/asm/dma-mapping.h |  15 +-
>  arch/arm64/mm/dma-mapping.c          | 449 +++++++++++++++++++++++++++++
>  drivers/iommu/Kconfig                |   7 +
>  drivers/iommu/Makefile               |   1 +
>  drivers/iommu/dma-iommu.c            | 534 +++++++++++++++++++++++++++++++++++
>  include/linux/dma-iommu.h            |  84 ++++++
>  include/linux/iommu.h                |   1 +
>  8 files changed, 1084 insertions(+), 8 deletions(-)
>  create mode 100644 drivers/iommu/dma-iommu.c
>  create mode 100644 include/linux/dma-iommu.h
>