4 * Copyright ProfitBricks GmbH 2012
5 * Copyright (C) 2013-2014 Red Hat Inc
8 * Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>
9 * Igor Mammedov <imammedo@redhat.com>
11 * This work is licensed under the terms of the GNU GPL, version 2 or later.
12 * See the COPYING file in the top-level directory.
16 #ifndef QEMU_PC_DIMM_H
17 #define QEMU_PC_DIMM_H
19 #include "exec/memory.h"
20 #include "sysemu/hostmem.h"
23 #define TYPE_PC_DIMM "pc-dimm"
24 #define PC_DIMM(obj) \
25 OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM)
26 #define PC_DIMM_CLASS(oc) \
27 OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM)
28 #define PC_DIMM_GET_CLASS(obj) \
29 OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM)
31 #define PC_DIMM_ADDR_PROP "addr"
32 #define PC_DIMM_SLOT_PROP "slot"
33 #define PC_DIMM_NODE_PROP "node"
34 #define PC_DIMM_SIZE_PROP "size"
35 #define PC_DIMM_MEMDEV_PROP "memdev"
37 #define PC_DIMM_UNASSIGNED_SLOT -1
41 * @addr: starting guest physical address, where @PCDIMMDevice is mapped.
42 * Default value: 0, means that address is auto-allocated.
43 * @node: numa node to which @PCDIMMDevice is attached.
44 * @slot: slot number into which @PCDIMMDevice is plugged in.
45 * Default value: -1, means that slot is auto-allocated.
46 * @hostmem: host memory backend providing memory for @PCDIMMDevice
48 typedef struct PCDIMMDevice
{
50 DeviceState parent_obj
;
56 HostMemoryBackend
*hostmem
;
61 * @realize: called after common dimm is realized so that the dimm based
62 * devices get the chance to do specified operations.
63 * @get_memory_region: returns #MemoryRegion associated with @dimm which
64 * is directly mapped into the physical address space of guest.
65 * @get_vmstate_memory_region: returns #MemoryRegion which indicates the
66 * memory of @dimm should be kept during live migration.
68 typedef struct PCDIMMDeviceClass
{
70 DeviceClass parent_class
;
73 void (*realize
)(PCDIMMDevice
*dimm
, Error
**errp
);
74 MemoryRegion
*(*get_memory_region
)(PCDIMMDevice
*dimm
, Error
**errp
);
75 MemoryRegion
*(*get_vmstate_memory_region
)(PCDIMMDevice
*dimm
);
80 * @base: address in guest physical address space where hotplug memory
81 * address space begins.
82 * @mr: hotplug memory address space container
84 typedef struct MemoryHotplugState
{
89 uint64_t pc_dimm_get_free_addr(uint64_t address_space_start
,
90 uint64_t address_space_size
,
91 uint64_t *hint
, uint64_t align
, uint64_t size
,
94 int pc_dimm_get_free_slot(const int *hint
, int max_slots
, Error
**errp
);
96 uint64_t pc_existing_dimms_capacity(Error
**errp
);
97 void pc_dimm_memory_plug(DeviceState
*dev
, MemoryHotplugState
*hpms
,
98 MemoryRegion
*mr
, uint64_t align
, Error
**errp
);
99 void pc_dimm_memory_unplug(DeviceState
*dev
, MemoryHotplugState
*hpms
,