[PATCH 7/8] hw/display: add vhost-user-video-pci

[Peter Griffin]

Add boiler plate code for vhost-user-video-pci.

Example
-device vhost-user-video-pci,chardev=video,id=video
-chardev socket,path=video.sock,id=video

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
 hw/display/vhost-user-video-pci.c | 82 +++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 hw/display/vhost-user-video-pci.c

diff --git a/hw/display/vhost-user-video-pci.c 
b/hw/display/vhost-user-video-pci.c
new file mode 100644
index 0000000000..ceeaad2742
--- /dev/null
+++ b/hw/display/vhost-user-video-pci.c
@@ -0,0 +1,82 @@
+/*
+ * Vhost-user VIDEO virtio device PCI glue
+ *
+ * Copyright (c) 2021 Linaro Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "hw/qdev-properties.h"
+#include "hw/virtio/vhost-user-video.h"
+#include "hw/virtio/virtio-pci.h"
+
+struct VHostUserVIDEOPCI {
+    VirtIOPCIProxy parent_obj;
+    VHostUserVIDEO vdev;
+};
+
+typedef struct VHostUserVIDEOPCI VHostUserVIDEOPCI;
+
+#define TYPE_VHOST_USER_VIDEO_PCI "vhost-user-video-pci-base"
+
+#define VHOST_USER_VIDEO_PCI(obj) \
+        OBJECT_CHECK(VHostUserVIDEOPCI, (obj), TYPE_VHOST_USER_VIDEO_PCI)
+
+static Property vuvideo_pci_properties[] = {
+    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
+                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
+    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
+                       DEV_NVECTORS_UNSPECIFIED),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void vuvideo_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+    VHostUserVIDEOPCI *dev = VHOST_USER_VIDEO_PCI(vpci_dev);
+    DeviceState *vdev = DEVICE(&dev->vdev);
+
+    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
+        vpci_dev->nvectors = 1;
+    }
+
+    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus), errp);
+    object_property_set_bool(OBJECT(vdev), "realized", true, errp);
+}
+
+static void vuvideo_pci_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+    k->realize = vuvideo_pci_realize;
+    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+    device_class_set_props(dc, vuvideo_pci_properties);
+    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+    pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
+    pcidev_k->revision = 0x00;
+    pcidev_k->class_id = PCI_CLASS_STORAGE_OTHER;
+}
+
+static void vuvideo_pci_instance_init(Object *obj)
+{
+    VHostUserVIDEOPCI *dev = VHOST_USER_VIDEO_PCI(obj);
+
+    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
+                                TYPE_VHOST_USER_VIDEO);
+}
+
+static const VirtioPCIDeviceTypeInfo vuvideo_pci_info = {
+    .base_name             = TYPE_VHOST_USER_VIDEO_PCI,
+    .non_transitional_name = "vhost-user-video-pci",
+    .instance_size = sizeof(VHostUserVIDEOPCI),
+    .instance_init = vuvideo_pci_instance_init,
+    .class_init    = vuvideo_pci_class_init,
+};
+
+static void vuvideo_pci_register(void)
+{
+    virtio_pci_types_register(&vuvideo_pci_info);
+}
+
+type_init(vuvideo_pci_register);
-- 
2.25.1