qemu/hw/display/vhost-user-vga.c
Marc-André Lureau 267f664658 hw/display: add vhost-user-vga & gpu-pci
Add new virtio-gpu devices with a "vhost-user" property. The
associated vhost-user backend is used to handle the virtio rings and
provide rendering results thanks to the vhost-user-gpu protocol.

Example usage:
-object vhost-user-backend,id=vug,cmd="./vhost-user-gpu"
-device vhost-user-vga,vhost-user=vug

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190524130946.31736-10-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-05-29 06:30:45 +02:00

53 lines
1.3 KiB
C

/*
* vhost-user VGA device
*
* Copyright Red Hat, Inc. 2018
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "virtio-vga.h"
#define TYPE_VHOST_USER_VGA "vhost-user-vga"
#define VHOST_USER_VGA(obj) \
OBJECT_CHECK(VhostUserVGA, (obj), TYPE_VHOST_USER_VGA)
typedef struct VhostUserVGA {
VirtIOVGABase parent_obj;
VhostUserGPU vdev;
} VhostUserVGA;
static void vhost_user_vga_inst_initfn(Object *obj)
{
VhostUserVGA *dev = VHOST_USER_VGA(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_USER_GPU);
VIRTIO_VGA_BASE(dev)->vgpu = VIRTIO_GPU_BASE(&dev->vdev);
object_property_add_alias(obj, "chardev",
OBJECT(&dev->vdev), "chardev",
&error_abort);
}
static const VirtioPCIDeviceTypeInfo vhost_user_vga_info = {
.generic_name = TYPE_VHOST_USER_VGA,
.parent = TYPE_VIRTIO_VGA_BASE,
.instance_size = sizeof(struct VhostUserVGA),
.instance_init = vhost_user_vga_inst_initfn,
};
static void vhost_user_vga_register_types(void)
{
virtio_pci_types_register(&vhost_user_vga_info);
}
type_init(vhost_user_vga_register_types)