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"
22 #include "hw/boards.h"
24 #define TYPE_PC_DIMM "pc-dimm"
25 #define PC_DIMM(obj) \
26 OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM)
27 #define PC_DIMM_CLASS(oc) \
28 OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM)
29 #define PC_DIMM_GET_CLASS(obj) \
30 OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM)
32 #define PC_DIMM_ADDR_PROP "addr"
33 #define PC_DIMM_SLOT_PROP "slot"
34 #define PC_DIMM_NODE_PROP "node"
35 #define PC_DIMM_SIZE_PROP "size"
36 #define PC_DIMM_MEMDEV_PROP "memdev"
38 #define PC_DIMM_UNASSIGNED_SLOT -1
42 * @addr: starting guest physical address, where @PCDIMMDevice is mapped.
43 * Default value: 0, means that address is auto-allocated.
44 * @node: numa node to which @PCDIMMDevice is attached.
45 * @slot: slot number into which @PCDIMMDevice is plugged in.
46 * Default value: -1, means that slot is auto-allocated.
47 * @hostmem: host memory backend providing memory for @PCDIMMDevice
49 typedef struct PCDIMMDevice
{
51 DeviceState parent_obj
;
57 HostMemoryBackend
*hostmem
;
62 * @realize: called after common dimm is realized so that the dimm based
63 * devices get the chance to do specified operations.
64 * @get_memory_region: returns #MemoryRegion associated with @dimm which
65 * is directly mapped into the physical address space of guest.
66 * @get_vmstate_memory_region: returns #MemoryRegion which indicates the
67 * memory of @dimm should be kept during live migration.
69 typedef struct PCDIMMDeviceClass
{
71 DeviceClass parent_class
;
74 void (*realize
)(PCDIMMDevice
*dimm
, Error
**errp
);
75 MemoryRegion
*(*get_memory_region
)(PCDIMMDevice
*dimm
, Error
**errp
);
76 MemoryRegion
*(*get_vmstate_memory_region
)(PCDIMMDevice
*dimm
);
79 uint64_t pc_dimm_get_free_addr(uint64_t address_space_start
,
80 uint64_t address_space_size
,
81 uint64_t *hint
, uint64_t align
, uint64_t size
,
84 int pc_dimm_get_free_slot(const int *hint
, int max_slots
, Error
**errp
);
86 uint64_t pc_existing_dimms_capacity(Error
**errp
);
87 void pc_dimm_memory_plug(DeviceState
*dev
, MemoryHotplugState
*hpms
,
88 MemoryRegion
*mr
, uint64_t align
, Error
**errp
);
89 void pc_dimm_memory_unplug(DeviceState
*dev
, MemoryHotplugState
*hpms
,