1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* PC DIMM device
*
* Copyright ProfitBricks GmbH 2012
* Copyright (C) 2013-2014 Red Hat Inc
*
* Authors:
* Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>
* Igor Mammedov <imammedo@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef QEMU_PC_DIMM_H
#define QEMU_PC_DIMM_H
#include "exec/memory.h"
#include "sysemu/hostmem.h"
#include "hw/qdev.h"
#define TYPE_PC_DIMM "pc-dimm"
#define PC_DIMM(obj) \
OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM)
#define PC_DIMM_CLASS(oc) \
OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM)
#define PC_DIMM_GET_CLASS(obj) \
OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM)
#define PC_DIMM_ADDR_PROP "addr"
#define PC_DIMM_SLOT_PROP "slot"
#define PC_DIMM_NODE_PROP "node"
#define PC_DIMM_SIZE_PROP "size"
#define PC_DIMM_MEMDEV_PROP "memdev"
#define PC_DIMM_UNASSIGNED_SLOT -1
/**
* PCDIMMDevice:
* @addr: starting guest physical address, where @PCDIMMDevice is mapped.
* Default value: 0, means that address is auto-allocated.
* @node: numa node to which @PCDIMMDevice is attached.
* @slot: slot number into which @PCDIMMDevice is plugged in.
* Default value: -1, means that slot is auto-allocated.
* @hostmem: host memory backend providing memory for @PCDIMMDevice
*/
typedef struct PCDIMMDevice {
/* private */
DeviceState parent_obj;
/* public */
uint64_t addr;
uint32_t node;
int32_t slot;
HostMemoryBackend *hostmem;
} PCDIMMDevice;
/**
* PCDIMMDeviceClass:
* @realize: called after common dimm is realized so that the dimm based
* devices get the chance to do specified operations.
* @get_memory_region: returns #MemoryRegion associated with @dimm which
* is directly mapped into the physical address space of guest.
* @get_vmstate_memory_region: returns #MemoryRegion which indicates the
* memory of @dimm should be kept during live migration.
*/
typedef struct PCDIMMDeviceClass {
/* private */
DeviceClass parent_class;
/* public */
void (*realize)(PCDIMMDevice *dimm, Error **errp);
MemoryRegion *(*get_memory_region)(PCDIMMDevice *dimm, Error **errp);
MemoryRegion *(*get_vmstate_memory_region)(PCDIMMDevice *dimm);
} PCDIMMDeviceClass;
/**
* MemoryHotplugState:
* @base: address in guest physical address space where hotplug memory
* address space begins.
* @mr: hotplug memory address space container
*/
typedef struct MemoryHotplugState {
hwaddr base;
MemoryRegion mr;
} MemoryHotplugState;
uint64_t pc_dimm_get_free_addr(uint64_t address_space_start,
uint64_t address_space_size,
uint64_t *hint, uint64_t align, uint64_t size,
Error **errp);
int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp);
MemoryDeviceInfoList *qmp_pc_dimm_device_list(void);
uint64_t pc_existing_dimms_capacity(Error **errp);
uint64_t get_plugged_memory_size(void);
void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms,
MemoryRegion *mr, uint64_t align, Error **errp);
void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms,
MemoryRegion *mr);
#endif
|
