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Add vhost-user-input-pci

Browse source 
Add a new virtio-input device, which connects to a vhost-user
backend.

Instead of reading configuration directly from an input device /
evdev (like virtio-input-host), it reads it over vhost-user protocol
with {SET,GET}_CONFIG messages. The vhost-user-backend handles the
queues & events setup.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190503130034.24916-5-marcandre.lureau@redhat.com

[ kraxel: drop -{non-,}transitional variants ]
[ kraxel: fix "make check" on !linux ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2019-05-03 15:00:32 +02:00 • committed by Gerd Hoffmann
parent f24bb7287d
commit 9c4d05b741
7 changed files with 201 additions and 0 deletions
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14
include/hw/virtio/virtio-input.h
View file

@ -2,6 +2,7 @@
#define QEMU_VIRTIO_INPUT_H
#include "ui/input.h"
#include "sysemu/vhost-user-backend.h"
/* ----------------------------------------------------------------- */
/* virtio input protocol */
@ -42,11 +43,18 @@ typedef struct virtio_input_event virtio_input_event;
#define VIRTIO_INPUT_HOST_GET_PARENT_CLASS(obj) \
OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HOST)
#define TYPE_VHOST_USER_INPUT "vhost-user-input"
#define VHOST_USER_INPUT(obj) \
OBJECT_CHECK(VHostUserInput, (obj), TYPE_VHOST_USER_INPUT)
#define VHOST_USER_INPUT_GET_PARENT_CLASS(obj) \
OBJECT_GET_PARENT_CLASS(obj, TYPE_VHOST_USER_INPUT)
typedef struct VirtIOInput VirtIOInput;
typedef struct VirtIOInputClass VirtIOInputClass;
typedef struct VirtIOInputConfig VirtIOInputConfig;
typedef struct VirtIOInputHID VirtIOInputHID;
typedef struct VirtIOInputHost VirtIOInputHost;
typedef struct VHostUserInput VHostUserInput;
struct VirtIOInputConfig {
virtio_input_config config;
@ -98,6 +106,12 @@ struct VirtIOInputHost {
int fd;
};
struct VHostUserInput {
VirtIOInput parent_obj;
VhostUserBackend *vhost;
};
void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event);
void virtio_input_init_config(VirtIOInput *vinput,
virtio_input_config *config);