Add PCI device related code in the TYPE_HOTPLUG_HANDLER
implementation.

For a PCI device hotplug/hotunplug event, the code routes to
acpi_pcihp_device callbacks (pre_plug_cb, plug_cb, unplug_request_cb,
unplug_cb).

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>

---

v2 -> v4:
moved before "hw/acpi/ged: Prepare the device to react to PCI hotplug
events" (Igor)

v2 -> v3:
- remove else block in acpi_ged_device_pre_plug_cb
---
 hw/acpi/generic_event_device.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c
index ef1c1ec51f..92b931758f 100644
--- a/hw/acpi/generic_event_device.c
+++ b/hw/acpi/generic_event_device.c
@@ -17,6 +17,7 @@
 #include "hw/irq.h"
 #include "hw/mem/pc-dimm.h"
 #include "hw/mem/nvdimm.h"
+#include "hw/pci/pci_device.h"
 #include "hw/qdev-properties.h"
 #include "migration/vmstate.h"
 #include "qemu/error-report.h"
@@ -228,6 +229,14 @@ static const MemoryRegionOps ged_regs_ops = {
     },
 };
 
+static void acpi_ged_device_pre_plug_cb(HotplugHandler *hotplug_dev,
+                                        DeviceState *dev, Error **errp)
+{
+    if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+        acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
+    }
+}
+
 static void acpi_ged_device_plug_cb(HotplugHandler *hotplug_dev,
                                     DeviceState *dev, Error **errp)
 {
@@ -241,6 +250,8 @@ static void acpi_ged_device_plug_cb(HotplugHandler *hotplug_dev,
         }
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
         acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
+    } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+        acpi_pcihp_device_plug_cb(hotplug_dev, &s->pcihp_state, dev, errp);
     } else {
         error_setg(errp, "virt: device plug request for unsupported device"
                    " type: %s", object_get_typename(OBJECT(dev)));
@@ -257,6 +268,9 @@ static void acpi_ged_unplug_request_cb(HotplugHandler *hotplug_dev,
         acpi_memory_unplug_request_cb(hotplug_dev, &s->memhp_state, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
         acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
+    } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+        acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->pcihp_state,
+                                            dev, errp);
     } else {
         error_setg(errp, "acpi: device unplug request for unsupported device"
                    " type: %s", object_get_typename(OBJECT(dev)));
@@ -272,6 +286,8 @@ static void acpi_ged_unplug_cb(HotplugHandler *hotplug_dev,
         acpi_memory_unplug_cb(&s->memhp_state, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
         acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp);
+    } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+        acpi_pcihp_device_unplug_cb(hotplug_dev, &s->pcihp_state, dev, errp);
     } else {
         error_setg(errp, "acpi: device unplug for unsupported device"
                    " type: %s", object_get_typename(OBJECT(dev)));
@@ -485,6 +501,7 @@ static void acpi_ged_class_init(ObjectClass *class, const void *data)
     dc->vmsd = &vmstate_acpi_ged;
     dc->realize = acpi_ged_realize;
 
+    hc->pre_plug = acpi_ged_device_pre_plug_cb;
     hc->plug = acpi_ged_device_plug_cb;
     hc->unplug_request = acpi_ged_unplug_request_cb;
     hc->unplug = acpi_ged_unplug_cb;
-- 
2.49.0