[Qemu-devel] [PATCH v3 2/4] virtio-9p-pci: switch to the new API.

[fred.konrad@greensocs.com]

From: KONRAD Frederic <fred.konrad@greensocs.com>

Here the virtio-9p-pci is modified for the new API. The device
virtio-9p-pci extends virtio-pci. It creates and connects a virtio-9p-device
during the init. The properties are not changed.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
---
 hw/virtio/virtio-pci.c | 58 ++++++++++++++++++++++++++++----------------------
 hw/virtio/virtio-pci.h | 20 ++++++++++++++---
 2 files changed, 50 insertions(+), 28 deletions(-)

diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 1ab7c86..df02355 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1081,46 +1081,54 @@ static const TypeInfo virtio_rng_info = {
 };
 
 #ifdef CONFIG_VIRTFS
-static int virtio_9p_init_pci(PCIDevice *pci_dev)
+static int virtio_9p_init_pci(VirtIOPCIProxy *vpci_dev)
 {
-    VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
-    VirtIODevice *vdev;
+    V9fsPCIState *dev = VIRTIO_9P_PCI(vpci_dev);
+    DeviceState *vdev = DEVICE(&dev->vdev);
 
-    vdev = virtio_9p_init(&pci_dev->qdev, &proxy->fsconf);
-    vdev->nvectors = proxy->nvectors;
-    virtio_init_pci(proxy, vdev);
-    /* make the actual value visible */
-    proxy->nvectors = vdev->nvectors;
+    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+    if (qdev_init(vdev) < 0) {
+        return -1;
+    }
     return 0;
 }
 
-static Property virtio_9p_properties[] = {
-    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
+static Property virtio_9p_pci_properties[] = {
+    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
+                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
-    DEFINE_VIRTIO_9P_PROPERTIES(VirtIOPCIProxy, fsconf),
+    DEFINE_VIRTIO_9P_PROPERTIES(V9fsPCIState, vdev.fsconf),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-static void virtio_9p_class_init(ObjectClass *klass, void *data)
+static void virtio_9p_pci_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
-    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
 
     k->init = virtio_9p_init_pci;
-    k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
-    k->device_id = PCI_DEVICE_ID_VIRTIO_9P;
-    k->revision = VIRTIO_PCI_ABI_VERSION;
-    k->class_id = 0x2;
-    dc->props = virtio_9p_properties;
-    dc->reset = virtio_pci_reset;
+    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_9P;
+    pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
+    pcidev_k->class_id = 0x2;
+    dc->props = virtio_9p_pci_properties;
 }
 
-static const TypeInfo virtio_9p_info = {
-    .name          = "virtio-9p-pci",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(VirtIOPCIProxy),
-    .class_init    = virtio_9p_class_init,
+static void virtio_9p_pci_instance_init(Object *obj)
+{
+    V9fsPCIState *dev = VIRTIO_9P_PCI(obj);
+    object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_9P);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
+}
+
+static const TypeInfo virtio_9p_pci_info = {
+    .name          = TYPE_VIRTIO_9P_PCI,
+    .parent        = TYPE_VIRTIO_PCI,
+    .instance_size = sizeof(V9fsPCIState),
+    .instance_init = virtio_9p_pci_instance_init,
+    .class_init    = virtio_9p_pci_class_init,
 };
 #endif
 
@@ -1501,7 +1509,7 @@ static void virtio_pci_register_types(void)
     type_register_static(&virtio_pci_bus_info);
     type_register_static(&virtio_pci_info);
 #ifdef CONFIG_VIRTFS
-    type_register_static(&virtio_9p_info);
+    type_register_static(&virtio_9p_pci_info);
 #endif
     type_register_static(&virtio_blk_pci_info);
     type_register_static(&virtio_scsi_pci_info);
diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index 85bad25..85a795f 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -83,9 +83,6 @@ struct VirtIOPCIProxy {
     uint32_t nvectors;
     NICConf nic;
     uint32_t host_features;
-#ifdef CONFIG_VIRTFS
-    V9fsConf fsconf;
-#endif
     virtio_net_conf net;
     VirtIORNGConf rng;
     bool ioeventfd_disabled;
@@ -145,6 +142,23 @@ struct VirtIOSerialPCI {
     VirtIOSerial vdev;
 };
 
+/*
+ * virtio-9p-pci: This extends VirtioPCIProxy.
+ */
+
+#ifdef CONFIG_VIRTFS
+
+#define TYPE_VIRTIO_9P_PCI "virtio-9p-pci"
+#define VIRTIO_9P_PCI(obj) \
+        OBJECT_CHECK(V9fsPCIState, (obj), TYPE_VIRTIO_9P_PCI)
+
+typedef struct V9fsPCIState {
+    VirtIOPCIProxy parent_obj;
+    V9fsState vdev;
+} V9fsPCIState;
+
+#endif /* CONFIG_VIRTFS */
+
 void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
 void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
 
-- 
1.8.1.4