[Xen-devel] [PATCH v02 0/7] arm: introduce remoteprocessor iommu module

[Andrii Tseglytskyi <andrii.tseglytskyi@xxxxxxxxxxxxxxx>]

The following patch series introduces IOMMU translation
framework for remote processors. Remote processors are
typically used for graphic rendering (GPUs) and
high quality video decoding (IPUs). They are typically
installed on such multimedia SoCs as OMAP4 / OMAP5.

As soon as remoteprocessor MMU typically works with
pagetables filled by physical addresses, which are
allocated by domU kernel, it is almost impossible to
use them under Xen - intermediate physical addresses
allocated by kernel, need to be translated to machine
addresses which are managed by Xen.

Andrii Tseglytskyi (7):
  arm: introduce remoteprocessor iommu module
  arm: omap: introduce iommu translation for IPU remoteproc
  arm: omap: introduce iommu translation for GPU remoteproc
  arm: omap: introduce print pagetable function for IPU remoteproc
  arm: omap: introduce print pagetable function for GPU remoteproc
  arm: introduce do_translate_pagetable hypercall
  arm: add trap for remoteproc mmio accesses

 xen/arch/arm/Makefile               |    1 +
 xen/arch/arm/io.c                   |    1 +
 xen/arch/arm/io.h                   |    1 +
 xen/arch/arm/platforms/Makefile     |    1 +
 xen/arch/arm/platforms/omap_iommu.c |  458 +++++++++++++++++++++++++++++++++++
 xen/arch/arm/remoteproc_iommu.c     |  436 +++++++++++++++++++++++++++++++++
 xen/arch/arm/traps.c                |    1 +
 xen/include/public/xen.h            |    1 +
 xen/include/xen/hypercall.h         |   12 +
 xen/include/xen/remoteproc_iommu.h  |   82 +++++++
 10 files changed, 994 insertions(+)
 create mode 100644 xen/arch/arm/platforms/omap_iommu.c
 create mode 100644 xen/arch/arm/remoteproc_iommu.c
 create mode 100644 xen/include/xen/remoteproc_iommu.h

-- 
1.7.9.5


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