[PATCH v4 0/7] Add virtio-iommu driver

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Implement the virtio-iommu driver, following specification v0.8 [1].

Changes since v3 [2]:
* Rebase onto v4.20-rc2. Patch 3 now touches drivers/of/base.c instead
  of drivers/pci/of.c, since the map_rid() function has moved.
* Removed the request timeout, that depended on DEBUG.
* Other small fixes addressing comments on v3.

You can find Linux driver and kvmtool device on my virtio-iommu/v0.8.1
branches [3]. You can also test it with the latest version of Eric's
QEMU device [4].

[1] Virtio-iommu specification v0.8, sources and pdf
    git://linux-arm.org/virtio-iommu.git virtio-iommu/v0.8
    http://jpbrucker.net/virtio-iommu/spec/v0.8/virtio-iommu-v0.8.pdf

[2] [PATCH v3 0/7] Add virtio-iommu driver
    https://www.spinics.net/lists/linux-pci/msg77110.html

[3] git://linux-arm.org/linux-jpb.git virtio-iommu/v0.8.1
    git://linux-arm.org/kvmtool-jpb.git virtio-iommu/v0.8.1

[4] [RFC v8 00/18] VIRTIO-IOMMU device
    https://www.mail-archive.com/qemu-devel@xxxxxxxxxx/msg572637.html

Jean-Philippe Brucker (7):
  dt-bindings: virtio-mmio: Add IOMMU description
  dt-bindings: virtio: Add virtio-pci-iommu node
  of: Allow the iommu-map property to omit untranslated devices
  PCI: OF: Initialize dev->fwnode appropriately
  iommu: Add virtio-iommu driver
  iommu/virtio: Add probe request
  iommu/virtio: Add event queue

 .../devicetree/bindings/virtio/iommu.txt      |   66 +
 .../devicetree/bindings/virtio/mmio.txt       |   30 +
 MAINTAINERS                                   |    7 +
 drivers/iommu/Kconfig                         |   11 +
 drivers/iommu/Makefile                        |    1 +
 drivers/iommu/virtio-iommu.c                  | 1160 +++++++++++++++++
 drivers/of/base.c                             |   10 +-
 drivers/pci/of.c                              |    7 +
 include/uapi/linux/virtio_ids.h               |    1 +
 include/uapi/linux/virtio_iommu.h             |  161 +++
 10 files changed, 1451 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/virtio/iommu.txt
 create mode 100644 drivers/iommu/virtio-iommu.c
 create mode 100644 include/uapi/linux/virtio_iommu.h

-- 
2.19.1

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