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 DECLARE_OBJ_CHECKERS(PCDIMMDevice, PCDIMMDeviceClass, 27 PC_DIMM, TYPE_PC_DIMM) 28 29 #define PC_DIMM_ADDR_PROP "addr" 30 #define PC_DIMM_SLOT_PROP "slot" 31 #define PC_DIMM_NODE_PROP "node" 32 #define PC_DIMM_SIZE_PROP "size" 33 #define PC_DIMM_MEMDEV_PROP "memdev" 34 35 #define PC_DIMM_UNASSIGNED_SLOT -1 36 37 /** 38 * PCDIMMDevice: 39 * @addr: starting guest physical address, where @PCDIMMDevice is mapped. 40 * Default value: 0, means that address is auto-allocated. 41 * @node: numa node to which @PCDIMMDevice is attached. 42 * @slot: slot number into which @PCDIMMDevice is plugged in. 43 * Default value: -1, means that slot is auto-allocated. 44 * @hostmem: host memory backend providing memory for @PCDIMMDevice 45 */ 46 struct PCDIMMDevice { 47 /* private */ 48 DeviceState parent_obj; 49 50 /* public */ 51 uint64_t addr; 52 uint32_t node; 53 int32_t slot; 54 HostMemoryBackend *hostmem; 55 }; 56 57 /** 58 * PCDIMMDeviceClass: 59 * @realize: called after common dimm is realized so that the dimm based 60 * devices get the chance to do specified operations. 61 * @get_vmstate_memory_region: returns #MemoryRegion which indicates the 62 * memory of @dimm should be kept during live migration. Will not fail 63 * after the device was realized. 64 */ 65 struct PCDIMMDeviceClass { 66 /* private */ 67 DeviceClass parent_class; 68 69 /* public */ 70 void (*realize)(PCDIMMDevice *dimm, Error **errp); 71 MemoryRegion *(*get_vmstate_memory_region)(PCDIMMDevice *dimm, 72 Error **errp); 73 }; 74 75 void pc_dimm_pre_plug(PCDIMMDevice *dimm, MachineState *machine, 76 const uint64_t *legacy_align, Error **errp); 77 void pc_dimm_plug(PCDIMMDevice *dimm, MachineState *machine, Error **errp); 78 void pc_dimm_unplug(PCDIMMDevice *dimm, MachineState *machine); 79 #endif 80