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>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*
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* Virtio video device
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*
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* Copyright Red Hat
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*
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* Authors:
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* Dave Airlie
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/pci/pci.h"
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#include "hw/virtio/virtio.h"
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#include "hw/virtio/virtio-bus.h"
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#include "hw/virtio/virtio-gpu-pci.h"
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static Property virtio_gpu_pci_base_properties[] = {
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DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void virtio_gpu_pci_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
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{
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VirtIOGPUPCIBase *vgpu = VIRTIO_GPU_PCI_BASE(vpci_dev);
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VirtIOGPUBase *g = vgpu->vgpu;
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DeviceState *vdev = DEVICE(g);
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int i;
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Error *local_error = NULL;
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qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
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if (!virtio_pci_force_virtio_1(vpci_dev, errp)) {
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return;
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}
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object_property_set_bool(OBJECT(vdev), true, "realized", &local_error);
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if (local_error) {
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error_propagate(errp, local_error);
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return;
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}
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for (i = 0; i < g->conf.max_outputs; i++) {
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object_property_set_link(OBJECT(g->scanout[i].con),
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OBJECT(vpci_dev),
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"device", errp);
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}
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}
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static void virtio_gpu_pci_base_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
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PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
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set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
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dc->props = virtio_gpu_pci_base_properties;
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dc->hotpluggable = false;
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k->realize = virtio_gpu_pci_base_realize;
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pcidev_k->class_id = PCI_CLASS_DISPLAY_OTHER;
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}
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static const TypeInfo virtio_gpu_pci_base_info = {
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.name = TYPE_VIRTIO_GPU_PCI_BASE,
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.parent = TYPE_VIRTIO_PCI,
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.instance_size = sizeof(VirtIOGPUPCIBase),
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.class_init = virtio_gpu_pci_base_class_init,
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.abstract = true
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};
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#define TYPE_VIRTIO_GPU_PCI "virtio-gpu-pci"
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#define VIRTIO_GPU_PCI(obj) \
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OBJECT_CHECK(VirtIOGPUPCI, (obj), TYPE_VIRTIO_GPU_PCI)
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typedef struct VirtIOGPUPCI {
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VirtIOGPUPCIBase parent_obj;
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VirtIOGPU vdev;
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} VirtIOGPUPCI;
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static void virtio_gpu_initfn(Object *obj)
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{
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VirtIOGPUPCI *dev = VIRTIO_GPU_PCI(obj);
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virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
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TYPE_VIRTIO_GPU);
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VIRTIO_GPU_PCI_BASE(obj)->vgpu = VIRTIO_GPU_BASE(&dev->vdev);
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}
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static const VirtioPCIDeviceTypeInfo virtio_gpu_pci_info = {
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.generic_name = TYPE_VIRTIO_GPU_PCI,
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.parent = TYPE_VIRTIO_GPU_PCI_BASE,
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.instance_size = sizeof(VirtIOGPUPCI),
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.instance_init = virtio_gpu_initfn,
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};
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static void virtio_gpu_pci_register_types(void)
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{
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type_register_static(&virtio_gpu_pci_base_info);
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virtio_pci_types_register(&virtio_gpu_pci_info);
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}
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type_init(virtio_gpu_pci_register_types)
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