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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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13
include/hw/virtio/virtio-input.h
View file

@ -50,10 +50,17 @@ typedef struct virtio_input_event virtio_input_event;
#define VIRTIO_INPUT_HID_GET_PARENT_CLASS(obj) \
OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HID)
#define TYPE_VIRTIO_INPUT_HOST "virtio-input-host-device"
#define VIRTIO_INPUT_HOST(obj) \
OBJECT_CHECK(VirtIOInputHost, (obj), TYPE_VIRTIO_INPUT_HOST)
#define VIRTIO_INPUT_HOST_GET_PARENT_CLASS(obj) \
OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HOST)
typedef struct VirtIOInput VirtIOInput;
typedef struct VirtIOInputClass VirtIOInputClass;
typedef struct VirtIOInputConfig VirtIOInputConfig;
typedef struct VirtIOInputHID VirtIOInputHID;
typedef struct VirtIOInputHost VirtIOInputHost;
struct VirtIOInputConfig {
virtio_input_config config;
@ -93,6 +100,12 @@ struct VirtIOInputHID {
int ledstate;
};
struct VirtIOInputHost {
VirtIOInput parent_obj;
char *evdev;
int fd;
};
void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event);
void virtio_input_init_config(VirtIOInput *vinput,
virtio_input_config *config);