pci: New pci_new(), pci_realize_and_unref() etc.

I'm converting from qdev_create()/qdev_init_nofail() to
qdev_new()/qdev_realize_and_unref(); recent commit "qdev: New
qdev_new(), qdev_realize(), etc." explains why.

PCI devices use qdev_create() through pci_create() and
pci_create_multifunction().

Provide pci_new(), pci_new_multifunction(), and
pci_realize_and_unref() for converting PCI devices.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-14-armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 955eb11..7e75964 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -2163,6 +2163,27 @@ static void pci_qdev_realize(DeviceState *qdev, Error **errp)
     }
 }
 
+PCIDevice *pci_new_multifunction(int devfn, bool multifunction,
+                                 const char *name)
+{
+    DeviceState *dev;
+
+    dev = qdev_new(name);
+    qdev_prop_set_int32(dev, "addr", devfn);
+    qdev_prop_set_bit(dev, "multifunction", multifunction);
+    return PCI_DEVICE(dev);
+}
+
+PCIDevice *pci_new(int devfn, const char *name)
+{
+    return pci_new_multifunction(devfn, false, name);
+}
+
+bool pci_realize_and_unref(PCIDevice *dev, PCIBus *bus, Error **errp)
+{
+    return qdev_realize_and_unref(&dev->qdev, &bus->qbus, errp);
+}
+
 PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,
                                     const char *name)
 {