qmp: add query-memory-devices command
[qemu.git] / include / hw / mem / pc-dimm.h
1 /*
2 * PC DIMM device
3 *
4 * Copyright ProfitBricks GmbH 2012
5 * Copyright (C) 2013-2014 Red Hat Inc
6 *
7 * Authors:
8 * Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>
9 * Igor Mammedov <imammedo@redhat.com>
10 *
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.
13 *
14 */
15
16 #ifndef QEMU_PC_DIMM_H
17 #define QEMU_PC_DIMM_H
18
19 #include "exec/memory.h"
20 #include "sysemu/hostmem.h"
21 #include "hw/qdev.h"
22
23 #define DEFAULT_PC_DIMMSIZE (1024*1024*1024)
24
25 #define TYPE_PC_DIMM "pc-dimm"
26 #define PC_DIMM(obj) \
27 OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM)
28 #define PC_DIMM_CLASS(oc) \
29 OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM)
30 #define PC_DIMM_GET_CLASS(obj) \
31 OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM)
32
33 #define PC_DIMM_ADDR_PROP "addr"
34 #define PC_DIMM_SLOT_PROP "slot"
35 #define PC_DIMM_NODE_PROP "node"
36 #define PC_DIMM_SIZE_PROP "size"
37 #define PC_DIMM_MEMDEV_PROP "memdev"
38
39 #define PC_DIMM_UNASSIGNED_SLOT -1
40
41 /**
42 * PCDIMMDevice:
43 * @addr: starting guest physical address, where @PCDIMMDevice is mapped.
44 * Default value: 0, means that address is auto-allocated.
45 * @node: numa node to which @PCDIMMDevice is attached.
46 * @slot: slot number into which @PCDIMMDevice is plugged in.
47 * Default value: -1, means that slot is auto-allocated.
48 * @hostmem: host memory backend providing memory for @PCDIMMDevice
49 */
50 typedef struct PCDIMMDevice {
51 /* private */
52 DeviceState parent_obj;
53
54 /* public */
55 uint64_t addr;
56 uint32_t node;
57 int32_t slot;
58 HostMemoryBackend *hostmem;
59 } PCDIMMDevice;
60
61 /**
62 * PCDIMMDeviceClass:
63 * @get_memory_region: returns #MemoryRegion associated with @dimm
64 */
65 typedef struct PCDIMMDeviceClass {
66 /* private */
67 DeviceClass parent_class;
68
69 /* public */
70 MemoryRegion *(*get_memory_region)(PCDIMMDevice *dimm);
71 } PCDIMMDeviceClass;
72
73 uint64_t pc_dimm_get_free_addr(uint64_t address_space_start,
74 uint64_t address_space_size,
75 uint64_t *hint, uint64_t size,
76 Error **errp);
77
78 int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp);
79
80 int qmp_pc_dimm_device_list(Object *obj, void *opaque);
81 #endif