[Qemu-devel] [PATCH V2 4/4] hw/pxb: add support for PCIe

[Marcel Apfelbaum <marcel@redhat.com>]

The PXB internal bus type is created in  conformance
with the primary root bus (bus 0).

Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
---
 hw/pci-bridge/pci_expander_bridge.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/hw/pci-bridge/pci_expander_bridge.c b/hw/pci-bridge/pci_expander_bridge.c
index 541414c..0a04297 100644
--- a/hw/pci-bridge/pci_expander_bridge.c
+++ b/hw/pci-bridge/pci_expander_bridge.c
@@ -23,6 +23,9 @@
 #define TYPE_PXB_BUS "pxb-bus"
 #define PXB_BUS(obj) OBJECT_CHECK(PXBBus, (obj), TYPE_PXB_BUS)
 
+#define TYPE_PXB_PCIE_BUS "pxb-pcie-bus"
+#define PXB_PCIE_BUS(obj) OBJECT_CHECK(PXBBus, (obj), TYPE_PXB_PCIE_BUS)
+
 typedef struct PXBBus {
     /*< private >*/
     PCIBus parent_obj;
@@ -86,10 +89,18 @@ static const TypeInfo pxb_bus_info = {
     .class_init    = pxb_bus_class_init,
 };
 
+static const TypeInfo pxb_pcie_bus_info = {
+    .name          = TYPE_PXB_PCIE_BUS,
+    .parent        = TYPE_PCIE_BUS,
+    .instance_size = sizeof(PXBBus),
+    .class_init    = pxb_bus_class_init,
+};
+
 static const char *pxb_host_root_bus_path(PCIHostState *host_bridge,
                                           PCIBus *rootbus)
 {
-    PXBBus *bus = PXB_BUS(rootbus);
+    PXBBus *bus = pci_bus_is_express(rootbus) ?
+                  PXB_PCIE_BUS(rootbus) : PXB_BUS(rootbus);
 
     snprintf(bus->bus_path, 8, "0000:%02x", pxb_bus_num(rootbus));
     return bus->bus_path;
@@ -222,7 +233,11 @@ static int pxb_dev_initfn(PCIDevice *dev)
         qdev_prop_set_uint8(bds, PCI_BRIDGE_DEV_PROP_CHASSIS_NR, pxb->bus_nr);
         qdev_prop_set_bit(bds, PCI_BRIDGE_DEV_PROP_SHPC, false);
     } else {
-        bus = pci_bus_new(ds, dev_name, NULL, NULL, 0, TYPE_PXB_BUS);
+        if (pci_bus_is_express(dev->bus)) {
+            bus = pci_bus_new(ds, dev_name, NULL, NULL, 0, TYPE_PXB_PCIE_BUS);
+        } else {
+            bus = pci_bus_new(ds, dev_name, NULL, NULL, 0, TYPE_PXB_BUS);
+        }
     }
 
     bus->parent_dev = dev;
@@ -290,6 +305,7 @@ static const TypeInfo pxb_dev_info = {
 static void pxb_register_types(void)
 {
     type_register_static(&pxb_bus_info);
+    type_register_static(&pxb_pcie_bus_info);
     type_register_static(&pxb_host_info);
     type_register_static(&pxb_dev_info);
 }
-- 
2.1.0