s390x/pci: introduce S390PCIBus

To enable S390PCIBusDevice as qdev, there should be a new bus to
plug and manage all instances of S390PCIBusDevice. Due to this,
S390PCIBus is introduced.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

2 files changed, 18 insertions, 0 deletions

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 0f6fcefe96..0c67c1e7aa 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -527,6 +527,9 @@ static int s390_pcihost_init(SysBusDevice *dev)
     bus = BUS(b);
     qbus_set_hotplug_handler(bus, DEVICE(dev), NULL);
     phb->bus = b;
+
+    s->bus = S390_PCI_BUS(qbus_create(TYPE_S390_PCI_BUS, DEVICE(s), NULL));
+
     QTAILQ_INIT(&s->pending_sei);
     return 0;
 }
@@ -636,9 +639,16 @@ static const TypeInfo s390_pcihost_info = {
     }
 };
 
+static const TypeInfo s390_pcibus_info = {
+    .name = TYPE_S390_PCI_BUS,
+    .parent = TYPE_BUS,
+    .instance_size = sizeof(S390PCIBus),
+};
+
 static void s390_pci_register_types(void)
 {
     type_register_static(&s390_pcihost_info);
+    type_register_static(&s390_pcibus_info);
 }
 
 type_init(s390_pci_register_types)
diff --git a/hw/s390x/s390-pci-bus.h b/hw/s390x/s390-pci-bus.h
index e332f6a212..c4d40794de 100644
--- a/hw/s390x/s390-pci-bus.h
+++ b/hw/s390x/s390-pci-bus.h
@@ -21,6 +21,7 @@
 #include "hw/s390x/css.h"
 
 #define TYPE_S390_PCI_HOST_BRIDGE "s390-pcihost"
+#define TYPE_S390_PCI_BUS "s390-pcibus"
 #define FH_MASK_ENABLE   0x80000000
 #define FH_MASK_INSTANCE 0x7f000000
 #define FH_MASK_SHM      0x00ff0000
@@ -31,6 +32,8 @@
 
 #define S390_PCI_HOST_BRIDGE(obj) \
     OBJECT_CHECK(S390pciState, (obj), TYPE_S390_PCI_HOST_BRIDGE)
+#define S390_PCI_BUS(obj) \
+    OBJECT_CHECK(S390PCIBus, (obj), TYPE_S390_PCI_BUS)
 
 #define HP_EVENT_TO_CONFIGURED        0x0301
 #define HP_EVENT_RESERVED_TO_STANDBY  0x0302
@@ -267,8 +270,13 @@ typedef struct S390PCIBusDevice {
     IndAddr *indicator;
 } S390PCIBusDevice;
 
+typedef struct S390PCIBus {
+    BusState qbus;
+} S390PCIBus;
+
 typedef struct S390pciState {
     PCIHostState parent_obj;
+    S390PCIBus *bus;
     S390PCIBusDevice pbdev[PCI_SLOT_MAX];
     AddressSpace msix_notify_as;
     MemoryRegion msix_notify_mr;