[PATCH 4/6] virtio-scsi-pci: implement device event interface for kick/call

[Dongli Zhang <dongli.zhang@oracle.com>]

This is to implement the device event interface for virtio-scsi-pci.

Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
---
 hw/scsi/virtio-scsi.c           |  9 +++++++++
 hw/virtio/virtio-scsi-pci.c     | 10 ++++++++++
 include/hw/virtio/virtio-scsi.h |  3 +++
 3 files changed, 22 insertions(+)

diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
index 6d80730287..f437ed1a81 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -962,6 +962,15 @@ static struct SCSIBusInfo virtio_scsi_scsi_info = {
     .load_request = virtio_scsi_load_request,
 };
 
+void virtio_scsi_device_event(DeviceState *dev, int event, int queue,
+                              Error **errp)
+{
+    VirtIOSCSI *s = VIRTIO_SCSI(dev);
+    bool irqfd = s->dataplane_started && !s->dataplane_fenced;
+
+    virtio_device_event(dev, event, queue, irqfd, errp);
+}
+
 void virtio_scsi_common_realize(DeviceState *dev,
                                 VirtIOHandleOutput ctrl,
                                 VirtIOHandleOutput evt,
diff --git a/hw/virtio/virtio-scsi-pci.c b/hw/virtio/virtio-scsi-pci.c
index 97fab74236..d5db743692 100644
--- a/hw/virtio/virtio-scsi-pci.c
+++ b/hw/virtio/virtio-scsi-pci.c
@@ -43,6 +43,15 @@ static Property virtio_scsi_pci_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
+static void virtio_scsi_pci_event(DeviceState *dev, int event, int queue,
+                                  Error **errp)
+{
+    VirtIOSCSIPCI *vscsi = VIRTIO_SCSI_PCI(dev);
+    DeviceState *vdev = DEVICE(&vscsi->vdev);
+
+    virtio_scsi_device_event(vdev, event, queue, errp);
+}
+
 static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
 {
     VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev);
@@ -82,6 +91,7 @@ static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data)
     k->realize = virtio_scsi_pci_realize;
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     device_class_set_props(dc, virtio_scsi_pci_properties);
+    dc->event = virtio_scsi_pci_event;
     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
     pcidev_k->revision = 0x00;
diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
index 543681bc18..d1fff0eeac 100644
--- a/include/hw/virtio/virtio-scsi.h
+++ b/include/hw/virtio/virtio-scsi.h
@@ -163,4 +163,7 @@ void virtio_scsi_dataplane_setup(VirtIOSCSI *s, Error **errp);
 int virtio_scsi_dataplane_start(VirtIODevice *s);
 void virtio_scsi_dataplane_stop(VirtIODevice *s);
 
+void virtio_scsi_device_event(DeviceState *dev, int event, int queue,
+                              Error **errp);
+
 #endif /* QEMU_VIRTIO_SCSI_H */
-- 
2.17.1