[Qemu-devel] [PATCH v4 0/6] virtio: add input device

[Gerd Hoffmann <kraxel@redhat.com>]

  Hi,

This patch series adds virtio input devices.  It's basically sending
linux evdev events over virtio.  There is support for emulated hid
devices (i.e. send usual input to virtio device instead of usb or ps2
device).

For v4 I've splitted the patches, so virtio-*-device and virtio-*-pci
are added by separate patches.  I've also left out pass-through for now.

So, patches 1-3 implement the actual devices, and they should be ready
to merge.  They apply cleanly to master and build just fine with a minor
fixup (s/64/32/ for virtio_input_get_features).  I plan to send out a
pull request for them soon.

Patches 4-6 carry the virtio-pci support code.  They have a dependency
on the virtio-1 branch (from mst or cordula), because I want them be
non-transitional devices.  The device has been designed with virtio-1
in mind, where virtio-pci config space moves from io to mmio, so having
a bit larger config space isn't a big issue.

Not sure how to proceed best with patches 4-6.  I don't feel like making
them transitional devices, but missing qemu 2.4 because virtio-pci isn't
ready for virtio 1.0 doesn't look nice either :(

Guest driver:  Present in linux kernel 4.1-rc1 & newer.

Specification (slightly outdated, latest changes from kernel driver
review not added yet):
  https://www.kraxel.org/cgit/virtio-spec/log/?h=virtio-input
  https://www.kraxel.org/virtio/virtio-v1.0-csprd03-virtio-input.html#x1-2640007

Gerd Hoffmann (6):
  virtio-input: add linux/input.h
  virtio-input: core code & base class [device]
  virtio-input: emulated devices [device]
  pci: add  PCI_CLASS_INPUT_*
  virtio-input: core code & base class [pci]
  virtio-input: emulated devices [pci]

 hw/input/Makefile.objs                 |    5 +
 hw/input/virtio-input-hid.c            |  502 +++++++++++++
 hw/input/virtio-input.c                |  282 ++++++++
 hw/virtio/virtio-pci.c                 |  120 ++++
 hw/virtio/virtio-pci.h                 |   27 +
 include/hw/pci/pci_ids.h               |    7 +
 include/hw/virtio/virtio-input.h       |  105 +++
 include/hw/virtio/virtio.h             |    1 +
 include/standard-headers/linux/input.h | 1198 ++++++++++++++++++++++++++++++++
 scripts/update-linux-headers.sh        |    4 +-
 10 files changed, 2250 insertions(+), 1 deletion(-)
 create mode 100644 hw/input/virtio-input-hid.c
 create mode 100644 hw/input/virtio-input.c
 create mode 100644 include/hw/virtio/virtio-input.h
 create mode 100644 include/standard-headers/linux/input.h

-- 
1.8.3.1