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 OBJECT_DECLARE_TYPE(PCDIMMDevice, PCDIMMDeviceClass, 25 PC_DIMM) 26 27 #define PC_DIMM_ADDR_PROP "addr" 28 #define PC_DIMM_SLOT_PROP "slot" 29 #define PC_DIMM_NODE_PROP "node" 30 #define PC_DIMM_SIZE_PROP "size" 31 #define PC_DIMM_MEMDEV_PROP "memdev" 32 33 #define PC_DIMM_UNASSIGNED_SLOT -1 34 35 /** 36 * PCDIMMDevice: 37 * @addr: starting guest physical address, where @PCDIMMDevice is mapped. 38 * Default value: 0, means that address is auto-allocated. 39 * @node: numa node to which @PCDIMMDevice is attached. 40 * @slot: slot number into which @PCDIMMDevice is plugged in. 41 * Default value: -1, means that slot is auto-allocated. 42 * @hostmem: host memory backend providing memory for @PCDIMMDevice 43 */ 44 struct PCDIMMDevice { 45 /* private */ 46 DeviceState parent_obj; 47 48 /* public */ 49 uint64_t addr; 50 uint32_t node; 51 int32_t slot; 52 HostMemoryBackend *hostmem; 53 }; 54 55 /** 56 * PCDIMMDeviceClass: 57 * @realize: called after common dimm is realized so that the dimm based 58 * devices get the chance to do specified operations. 59 * @get_vmstate_memory_region: returns #MemoryRegion which indicates the 60 * memory of @dimm should be kept during live migration. Will not fail 61 * after the device was realized. 62 */ 63 struct PCDIMMDeviceClass { 64 /* private */ 65 DeviceClass parent_class; 66 67 /* public */ 68 void (*realize)(PCDIMMDevice *dimm, Error **errp); 69 MemoryRegion *(*get_vmstate_memory_region)(PCDIMMDevice *dimm, 70 Error **errp); 71 }; 72 73 void pc_dimm_pre_plug(PCDIMMDevice *dimm, MachineState *machine, 74 const uint64_t *legacy_align, Error **errp); 75 void pc_dimm_plug(PCDIMMDevice *dimm, MachineState *machine); 76 void pc_dimm_unplug(PCDIMMDevice *dimm, MachineState *machine); 77 #endif 78