memory-device: complete factoring out plug handling

With the new memory device functions in place, we can factor out
plugging of memory devices completely.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20181005092024.14344-15-david@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

hw/mem/memory-device.c

@@ -273,10 +273,17 @@ out:
     error_propagate(errp, local_err);
 }
 
-void memory_device_plug_region(MachineState *ms, MemoryRegion *mr,
-                               uint64_t addr)
+void memory_device_plug(MemoryDeviceState *md, MachineState *ms)
 {
-    /* we expect a previous call to memory_device_get_free_addr() */
+    const MemoryDeviceClass *mdc = MEMORY_DEVICE_GET_CLASS(md);
+    const uint64_t addr = mdc->get_addr(md);
+    MemoryRegion *mr;
+
+    /*
+     * We expect that a previous call to memory_device_pre_plug() succeeded, so
+     * it can't fail at this point.
+     */
+    mr = mdc->get_memory_region(md, &error_abort);
     g_assert(ms->device_memory);
 
     memory_region_add_subregion(&ms->device_memory->mr,

hw/mem/pc-dimm.c

@@ -63,17 +63,10 @@ out:
 void pc_dimm_plug(PCDIMMDevice *dimm, MachineState *machine, Error **errp)
 {
     PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
-    MemoryDeviceClass *mdc = MEMORY_DEVICE_GET_CLASS(dimm);
     MemoryRegion *vmstate_mr = ddc->get_vmstate_memory_region(dimm,
                                                               &error_abort);
-    MemoryRegion *mr = mdc->get_memory_region(MEMORY_DEVICE(dimm),
-                                              &error_abort);
-    uint64_t addr;
-
-    addr = object_property_get_uint(OBJECT(dimm), PC_DIMM_ADDR_PROP,
-                                    &error_abort);
 
-    memory_device_plug_region(machine, mr, addr);
+    memory_device_plug(MEMORY_DEVICE(dimm), machine);
     vmstate_register_ram(vmstate_mr, DEVICE(dimm));
 }
 

include/hw/mem/memory-device.h

@@ -101,8 +101,7 @@ MemoryDeviceInfoList *qmp_memory_device_list(void);
 uint64_t get_plugged_memory_size(void);
 void memory_device_pre_plug(MemoryDeviceState *md, MachineState *ms,
                             const uint64_t *legacy_align, Error **errp);
-void memory_device_plug_region(MachineState *ms, MemoryRegion *mr,
-                               uint64_t addr);
+void memory_device_plug(MemoryDeviceState *md, MachineState *ms);
 void memory_device_unplug_region(MachineState *ms, MemoryRegion *mr);
 uint64_t memory_device_get_region_size(const MemoryDeviceState *md,
                                        Error **errp);