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
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2.19.1
