[Qemu-devel] [PATCH V3 36/44] virtio-serial-pci: switch to the new API.

[fred . konrad]

From: KONRAD Frederic <address@hidden>

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

Signed-off-by: KONRAD Frederic <address@hidden>
---
 hw/virtio-pci.c | 128 ++++++++++++++++++++++++++++----------------------------
 hw/virtio-pci.h |  15 ++++++-
 2 files changed, 79 insertions(+), 64 deletions(-)

diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 6221e01..3f54fc4 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -933,68 +933,6 @@ static void virtio_exit_pci(PCIDevice *pci_dev)
     msix_uninit_exclusive_bar(pci_dev);
 }
 
-static int virtio_serial_init_pci(PCIDevice *pci_dev)
-{
-    VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
-    VirtIODevice *vdev;
-
-    if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
-        proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
-        proxy->class_code != PCI_CLASS_OTHERS)          /* qemu-kvm  */
-        proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER;
-
-    vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial);
-    if (!vdev) {
-        return -1;
-    }
-    vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED
-                                        ? proxy->serial.max_virtserial_ports + 
1
-                                        : proxy->nvectors;
-    virtio_init_pci(proxy, vdev);
-    proxy->nvectors = vdev->nvectors;
-    return 0;
-}
-
-static void virtio_serial_exit_pci(PCIDevice *pci_dev)
-{
-    VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
-
-    virtio_pci_stop_ioeventfd(proxy);
-    virtio_serial_exit(proxy->vdev);
-    virtio_exit_pci(pci_dev);
-}
-
-static Property virtio_serial_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_HEX32("class", VirtIOPCIProxy, class_code, 0),
-    DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
-    DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOPCIProxy, serial),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
-static void virtio_serial_class_init(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
-    k->init = virtio_serial_init_pci;
-    k->exit = virtio_serial_exit_pci;
-    k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
-    k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE;
-    k->revision = VIRTIO_PCI_ABI_VERSION;
-    k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
-    dc->reset = virtio_pci_reset;
-    dc->props = virtio_serial_properties;
-}
-
-static const TypeInfo virtio_serial_info = {
-    .name          = "virtio-serial-pci",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(VirtIOPCIProxy),
-    .class_init    = virtio_serial_class_init,
-};
-
 /*
  * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
  */
@@ -1398,6 +1336,70 @@ static const TypeInfo virtio_rng_info = {
     .class_init    = virtio_rng_pci_class_init,
 };
 
+/* virtio-serial-pci */
+
+static int virtio_serial_pci_init(VirtIOPCIProxy *vpci_dev)
+{
+    VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev);
+    DeviceState *vdev = DEVICE(&dev->vdev);
+
+    if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
+        vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
+        vpci_dev->class_code != PCI_CLASS_OTHERS) {        /* qemu-kvm  */
+            vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER;
+    }
+
+    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
+        vpci_dev->nvectors = dev->serial.max_virtserial_ports + 1;
+    }
+    virtio_serial_set_conf(vdev, &(dev->serial));
+    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+    if (qdev_init(vdev) < 0) {
+        return -1;
+    }
+    return 0;
+}
+
+static Property virtio_serial_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_HEX32("class", VirtIOPCIProxy, class_code, 0),
+    DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
+    DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialPCI, serial),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void virtio_serial_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->init = virtio_serial_pci_init;
+    dc->props = virtio_serial_pci_properties;
+    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE;
+    pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
+    pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
+}
+
+static void virtio_serial_pci_instance_init(Object *obj)
+{
+    VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj);
+    object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
+}
+
+static const TypeInfo virtio_serial_pci_info = {
+    .name          = TYPE_VIRTIO_SERIAL_PCI,
+    .parent        = TYPE_VIRTIO_PCI,
+    .instance_size = sizeof(VirtIOSerialPCI),
+    .instance_init = virtio_serial_pci_instance_init,
+    .class_init    = virtio_serial_pci_class_init,
+};
+
 /* virtio-pci-bus */
 
 void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
@@ -1437,7 +1439,6 @@ static const TypeInfo virtio_pci_bus_info = {
 
 static void virtio_pci_register_types(void)
 {
-    type_register_static(&virtio_serial_info);
     type_register_static(&virtio_rng_info);
     type_register_static(&virtio_pci_bus_info);
     type_register_static(&virtio_pci_info);
@@ -1445,6 +1446,7 @@ static void virtio_pci_register_types(void)
     type_register_static(&virtio_net_pci_info);
     type_register_static(&virtio_scsi_pci_info);
     type_register_static(&virtio_balloon_pci_info);
+    type_register_static(&virtio_serial_pci_info);
 }
 
 type_init(virtio_pci_register_types)
diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h
index f56735a..04c51c5 100644
--- a/hw/virtio-pci.h
+++ b/hw/virtio-pci.h
@@ -30,6 +30,7 @@ typedef struct VirtIONetPCI VirtIONetPCI;
 typedef struct VirtIOSCSIPCI VirtIOSCSIPCI;
 typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
 typedef struct VirtIORngPCI VirtIORngPCI;
+typedef struct VirtIOSerialPCI VirtIOSerialPCI;
 
 /* virtio-pci-bus */
 
@@ -82,7 +83,6 @@ struct VirtIOPCIProxy {
 #ifdef CONFIG_LINUX
     V9fsConf fsconf;
 #endif
-    virtio_serial_conf serial;
     bool ioeventfd_disabled;
     bool ioeventfd_started;
     VirtIOIRQFD *vector_irqfd;
@@ -155,6 +155,19 @@ struct VirtIORngPCI {
     VirtIORNGConf conf;
 };
 
+/*
+ * virtio-serial-pci: This extends VirtioPCIProxy.
+ */
+#define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci"
+#define VIRTIO_SERIAL_PCI(obj) \
+        OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI)
+
+struct VirtIOSerialPCI {
+    VirtIOPCIProxy parent_obj;
+    VirtIOSerial vdev;
+    virtio_serial_conf serial;
+};
+
 void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
 void virtio_pci_reset(DeviceState *d);
 void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
-- 
1.7.11.7