[Xen-devel] [PATCH v2 00/13] "Non-shared" IOMMU support on ARM

[Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>]

From: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>

Hi, all.

The purpose of this patch series is to create a base for porting
any "Non-shared" IOMMUs to Xen on ARM. Saying "Non-shared" IOMMU I mean
the IOMMU that can't share the page table with the CPU.
Primarily, we are interested in IPMMU-VMSA and I hope that it will be the first 
candidate.
It is VMSA-compatible IOMMU that integrated in the newest Renesas R-Car Gen3 
SoCs (ARM).
I am about to push IPMMU-VMSA support in a while.

With regard to the patch series, it was rebased on Xen 4.9.0 release and tested 
on Renesas R-Car Gen3
H3/M3 based boards with applied IPMMU-VMSA support:
- Patches 1 and 3 have Julien's Rb.
- Patch 2 has Jan's Rb but only for x86 and generic parts.
- Patch 4 has Julien's Ab.
- Patches 5,6,9,10 were slightly reworked.
- Patch 7 was significantly reworked. The previous patch -> iommu: Split 
iommu_hwdom_init() into arch specific parts
- Patches 8,11,12,13 are new.

Not really sure about x86-related changes since I had no possibility to check.
So, compile-tested on x86.

You can find current patch series here:
repo: https://github.com/otyshchenko1/xen.git branch: non_shared_iommu_v2

Previous patch series here:
[PATCH v1 00/10] "Non-shared" IOMMU support on ARM
https://www.mail-archive.com/xen-devel@xxxxxxxxxxxxx/msg107532.html

[RFC PATCH 0/9] "Non-shared" IOMMU support on ARM
https://www.mail-archive.com/xen-devel@xxxxxxxxxxxxx/msg100468.html

Thank you.

Oleksandr Tyshchenko (13):
  xen/device-tree: Add dt_count_phandle_with_args helper
  iommu: Add extra order argument to the IOMMU APIs and platform
    callbacks
  xen/arm: p2m: Add helper to convert p2m type to IOMMU flags
  xen/arm: p2m: Update IOMMU mapping whenever possible if page table is
    not shared
  iommu/arm: Re-define iommu_use_hap_pt(d) as iommu_hap_pt_share
  iommu: Add extra use_iommu argument to iommu_domain_init()
  iommu: Make decision about needing IOMMU for hardware domains in
    advance
  iommu/arm: Misc fixes for arch specific part
  xen/arm: Add use_iommu flag to xen_arch_domainconfig
  xen/arm: domain_build: Don't expose IOMMU specific properties to the
    guest
  iommu/arm: smmu: Squash map_pages/unmap_pages with map_page/unmap_page
  [RFC] iommu: VT-d: Squash map_pages/unmap_pages with
    map_page/unmap_page
  [RFC] iommu: AMD-Vi: Squash map_pages/unmap_pages with
    map_page/unmap_page

 tools/libxl/libxl_arm.c                       |   8 +
 xen/arch/arm/domain.c                         |   2 +-
 xen/arch/arm/domain_build.c                   |  10 ++
 xen/arch/arm/p2m.c                            |  10 +-
 xen/arch/x86/domain.c                         |   2 +-
 xen/arch/x86/mm.c                             |  11 +-
 xen/arch/x86/mm/p2m-ept.c                     |  21 +--
 xen/arch/x86/mm/p2m-pt.c                      |  26 +---
 xen/arch/x86/mm/p2m.c                         |  38 +----
 xen/arch/x86/x86_64/mm.c                      |   5 +-
 xen/common/device_tree.c                      |   7 +
 xen/common/grant_table.c                      |  10 +-
 xen/drivers/passthrough/amd/iommu_map.c       | 212 +++++++++++++++-----------
 xen/drivers/passthrough/amd/pci_amd_iommu.c   |  10 +-
 xen/drivers/passthrough/arm/iommu.c           |   7 +-
 xen/drivers/passthrough/arm/smmu.c            |  23 ++-
 xen/drivers/passthrough/iommu.c               |  73 ++++-----
 xen/drivers/passthrough/vtd/iommu.c           | 116 +++++++++-----
 xen/drivers/passthrough/vtd/x86/vtd.c         |   4 +-
 xen/drivers/passthrough/x86/iommu.c           |   6 +-
 xen/include/asm-arm/iommu.h                   |   4 +-
 xen/include/asm-arm/p2m.h                     |  34 +++++
 xen/include/asm-x86/hvm/svm/amd-iommu-proto.h |   8 +-
 xen/include/public/arch-arm.h                 |   5 +
 xen/include/xen/device_tree.h                 |  19 +++
 xen/include/xen/iommu.h                       |  24 +--
 26 files changed, 402 insertions(+), 293 deletions(-)

-- 
2.7.4


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