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-rw-r--r--hw/pci/pci.c5
-rw-r--r--hw/pci/pci.h1
2 files changed, 6 insertions, 0 deletions
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 7c5f2e283d..7f28101cb4 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -297,6 +297,11 @@ static void pci_bus_init(PCIBus *bus, DeviceState *parent,
     vmstate_register(NULL, -1, &vmstate_pcibus, bus);
 }
 
+bool pci_bus_is_express(PCIBus *bus)
+{
+    return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS);
+}
+
 void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
                          const char *name,
                          MemoryRegion *address_space_mem,
diff --git a/hw/pci/pci.h b/hw/pci/pci.h
index 10aeaf0cc6..d715e6f09d 100644
--- a/hw/pci/pci.h
+++ b/hw/pci/pci.h
@@ -344,6 +344,7 @@ typedef int (*pci_hotplug_fn)(DeviceState *qdev, PCIDevice *pci_dev,
 #define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS)
 #define TYPE_PCIE_BUS "PCIE"
 
+bool pci_bus_is_express(PCIBus *bus);
 void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
                          const char *name,
                          MemoryRegion *address_space_mem,