[Qemu-devel] [RFC PATCH 12/15] spapr: stub implementation of machine-level HotplugHandler interface

[Michael Roth <mdroth@linux.vnet.ibm.com>]

This is mostly a shim patch to base more easily on CPU/MEM patches.
In that case it can most likely be dropped, otherwise it should be
squashed into actual hotplug handler implementation that will follow.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 hw/ppc/spapr.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index a7af332..042e7a9 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1829,12 +1829,32 @@ static void spapr_nmi(NMIState *n, int cpu_index, Error **errp)
     }
 }
 
+static void spapr_machine_device_plug(HotplugHandler *hotplug_dev,
+                                      DeviceState *dev, Error **errp)
+{
+}
+
+static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev,
+                                        DeviceState *dev, Error **errp)
+{
+}
+
+static HotplugHandler *spapr_get_hotplug_handler(MachineState *machine,
+                                                 DeviceState *dev)
+{
+    if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) {
+        return HOTPLUG_HANDLER(machine);
+    }
+    return NULL;
+}
+
 static void spapr_machine_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
     sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(oc);
     FWPathProviderClass *fwc = FW_PATH_PROVIDER_CLASS(oc);
     NMIClass *nc = NMI_CLASS(oc);
+    HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
 
     mc->init = ppc_spapr_init;
     mc->reset = ppc_spapr_reset;
@@ -1844,6 +1864,9 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = NULL;
     mc->kvm_type = spapr_kvm_type;
     mc->has_dynamic_sysbus = true;
+    mc->get_hotplug_handler = spapr_get_hotplug_handler;
+    hc->plug = spapr_machine_device_plug;
+    hc->unplug = spapr_machine_device_unplug;
     smc->dr_phb_enabled = false;
 
     fwc->get_dev_path = spapr_get_fw_dev_path;
@@ -1861,6 +1884,7 @@ static const TypeInfo spapr_machine_info = {
     .interfaces = (InterfaceInfo[]) {
         { TYPE_FW_PATH_PROVIDER },
         { TYPE_NMI },
+        { TYPE_HOTPLUG_HANDLER },
         { }
     },
 };
-- 
1.9.1