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 "hw/qdev-core.h" 21 #include "qom/object.h" 22 23 #define TYPE_PC_DIMM "pc-dimm" 24 typedef struct PCDIMMDevice PCDIMMDevice; 25 typedef struct PCDIMMDeviceClass PCDIMMDeviceClass; 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 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 }; 60 61 /** 62 * PCDIMMDeviceClass: 63 * @realize: called after common dimm is realized so that the dimm based 64 * devices get the chance to do specified operations. 65 * @get_vmstate_memory_region: returns #MemoryRegion which indicates the 66 * memory of @dimm should be kept during live migration. Will not fail 67 * after the device was realized. 68 */ 69 struct PCDIMMDeviceClass { 70 /* private */ 71 DeviceClass parent_class; 72 73 /* public */ 74 void (*realize)(PCDIMMDevice *dimm, Error **errp); 75 MemoryRegion *(*get_vmstate_memory_region)(PCDIMMDevice *dimm, 76 Error **errp); 77 }; 78 79 void pc_dimm_pre_plug(PCDIMMDevice *dimm, MachineState *machine, 80 const uint64_t *legacy_align, Error **errp); 81 void pc_dimm_plug(PCDIMMDevice *dimm, MachineState *machine, Error **errp); 82 void pc_dimm_unplug(PCDIMMDevice *dimm, MachineState *machine); 83 #endif 84