Implement the virtio-iommu driver, following specification v0.12 [1].
Since last version [2] we've worked on improving the specification,
which resulted in the following changes to the interface:
* Remove the EXEC flag.
* Add feature bit for the MMIO flag.
* Change domain_bits to domain_range.
Given that there were small changes to patch 5/7, I removed the review
and test tags. Please find the code at [3].
[1] Virtio-iommu specification v0.12, sources and pdf
git://linux-arm.org/virtio-iommu.git virtio-iommu/v0.12
http://jpbrucker.net/virtio-iommu/spec/v0.12/virtio-iommu-v0.12.pdf
http://jpbrucker.net/virtio-iommu/spec/diffs/virtio-iommu-dev-diff-v0.11-v0.12.pdf
[2] [PATCH v7 0/7] Add virtio-iommu driver
https://lore.kernel.org/linux-pci/0ba215f5-e856-bf31-8dd9-a85710714a7a@xxxxxxx/T/
[3] git://linux-arm.org/linux-jpb.git virtio-iommu/v0.12
git://linux-arm.org/kvmtool-jpb.git virtio-iommu/v0.12
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 | 1176 +++++++++++++++++
drivers/of/base.c | 10 +-
drivers/pci/of.c | 6 +
include/uapi/linux/virtio_ids.h | 1 +
include/uapi/linux/virtio_iommu.h | 165 +++
10 files changed, 1470 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
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2.21.0
