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virtio-input: evdev passthrough

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This allows to assign host input devices to the guest:

qemu -device virtio-input-host-pci,evdev=/dev/input/event<nr>

The guest gets exclusive access to the input device, so be careful
with assigning the keyboard if you have only one connected to your
machine.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2014-03-28 09:18:47 +01:00
parent 6f2b9a5b24
commit 006a5edebe
5 changed files with 228 additions and 0 deletions
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16
hw/virtio/virtio-pci.c
View file

@ -1969,6 +1969,14 @@ static void virtio_tablet_initfn(Object *obj)
TYPE_VIRTIO_TABLET);
}
static void virtio_host_initfn(Object *obj)
{
VirtIOInputHostPCI *dev = VIRTIO_INPUT_HOST_PCI(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_INPUT_HOST);
}
static const TypeInfo virtio_input_pci_info = {
.name = TYPE_VIRTIO_INPUT_PCI,
.parent = TYPE_VIRTIO_PCI,
@ -2007,6 +2015,13 @@ static const TypeInfo virtio_tablet_pci_info = {
.instance_init = virtio_tablet_initfn,
};
static const TypeInfo virtio_host_pci_info = {
.name = TYPE_VIRTIO_INPUT_HOST_PCI,
.parent = TYPE_VIRTIO_INPUT_PCI,
.instance_size = sizeof(VirtIOInputHostPCI),
.instance_init = virtio_host_initfn,
};
/* virtio-pci-bus */
static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
@ -2053,6 +2068,7 @@ static void virtio_pci_register_types(void)
type_register_static(&virtio_keyboard_pci_info);
type_register_static(&virtio_mouse_pci_info);
type_register_static(&virtio_tablet_pci_info);
type_register_static(&virtio_host_pci_info);
type_register_static(&virtio_pci_bus_info);
type_register_static(&virtio_pci_info);
#ifdef CONFIG_VIRTFS