100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/*
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* Dimm device for Memory Hotplug
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*
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* Copyright ProfitBricks GmbH 2012
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* Copyright (C) 2014 Red Hat Inc
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>
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*/
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#include "hw/mem/pc-dimm.h"
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#include "qemu/config-file.h"
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#include "qapi/visitor.h"
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static Property pc_dimm_properties[] = {
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DEFINE_PROP_UINT64(PC_DIMM_ADDR_PROP, PCDIMMDevice, addr, 0),
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DEFINE_PROP_UINT32(PC_DIMM_NODE_PROP, PCDIMMDevice, node, 0),
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DEFINE_PROP_INT32(PC_DIMM_SLOT_PROP, PCDIMMDevice, slot,
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PC_DIMM_UNASSIGNED_SLOT),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void pc_dimm_get_size(Object *obj, Visitor *v, void *opaque,
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const char *name, Error **errp)
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{
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int64_t value;
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MemoryRegion *mr;
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PCDIMMDevice *dimm = PC_DIMM(obj);
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mr = host_memory_backend_get_memory(dimm->hostmem, errp);
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value = memory_region_size(mr);
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visit_type_int(v, &value, name, errp);
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}
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static void pc_dimm_init(Object *obj)
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{
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PCDIMMDevice *dimm = PC_DIMM(obj);
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object_property_add(obj, PC_DIMM_SIZE_PROP, "int", pc_dimm_get_size,
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NULL, NULL, NULL, &error_abort);
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object_property_add_link(obj, PC_DIMM_MEMDEV_PROP, TYPE_MEMORY_BACKEND,
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(Object **)&dimm->hostmem,
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qdev_prop_allow_set_link_before_realize,
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OBJ_PROP_LINK_UNREF_ON_RELEASE,
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&error_abort);
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}
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static void pc_dimm_realize(DeviceState *dev, Error **errp)
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{
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PCDIMMDevice *dimm = PC_DIMM(dev);
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if (!dimm->hostmem) {
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error_setg(errp, "'" PC_DIMM_MEMDEV_PROP "' property is not set");
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return;
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}
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}
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static MemoryRegion *pc_dimm_get_memory_region(PCDIMMDevice *dimm)
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{
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return host_memory_backend_get_memory(dimm->hostmem, &error_abort);
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}
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static void pc_dimm_class_init(ObjectClass *oc, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(oc);
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PCDIMMDeviceClass *ddc = PC_DIMM_CLASS(oc);
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dc->realize = pc_dimm_realize;
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dc->props = pc_dimm_properties;
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ddc->get_memory_region = pc_dimm_get_memory_region;
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}
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static TypeInfo pc_dimm_info = {
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.name = TYPE_PC_DIMM,
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.parent = TYPE_DEVICE,
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.instance_size = sizeof(PCDIMMDevice),
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.instance_init = pc_dimm_init,
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.class_init = pc_dimm_class_init,
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.class_size = sizeof(PCDIMMDeviceClass),
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};
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static void pc_dimm_register_types(void)
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{
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type_register_static(&pc_dimm_info);
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}
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type_init(pc_dimm_register_types)
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