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 22 #define TYPE_PC_DIMM "pc-dimm" 23 #define PC_DIMM(obj) \ 24 OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM) 25 #define PC_DIMM_CLASS(oc) \ 26 OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM) 27 #define PC_DIMM_GET_CLASS(obj) \ 28 OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM) 29 30 #define PC_DIMM_ADDR_PROP "addr" 31 #define PC_DIMM_SLOT_PROP "slot" 32 #define PC_DIMM_NODE_PROP "node" 33 #define PC_DIMM_SIZE_PROP "size" 34 #define PC_DIMM_MEMDEV_PROP "memdev" 35 36 #define PC_DIMM_UNASSIGNED_SLOT -1 37 38 /** 39 * PCDIMMDevice: 40 * @addr: starting guest physical address, where @PCDIMMDevice is mapped. 41 * Default value: 0, means that address is auto-allocated. 42 * @node: numa node to which @PCDIMMDevice is attached. 43 * @slot: slot number into which @PCDIMMDevice is plugged in. 44 * Default value: -1, means that slot is auto-allocated. 45 * @hostmem: host memory backend providing memory for @PCDIMMDevice 46 */ 47 typedef struct PCDIMMDevice { 48 /* private */ 49 DeviceState parent_obj; 50 51 /* public */ 52 uint64_t addr; 53 uint32_t node; 54 int32_t slot; 55 HostMemoryBackend *hostmem; 56 } PCDIMMDevice; 57 58 /** 59 * PCDIMMDeviceClass: 60 * @realize: called after common dimm is realized so that the dimm based 61 * devices get the chance to do specified operations. 62 * @get_vmstate_memory_region: returns #MemoryRegion which indicates the 63 * memory of @dimm should be kept during live migration. Will not fail 64 * after the device was realized. 65 */ 66 typedef struct PCDIMMDeviceClass { 67 /* private */ 68 DeviceClass parent_class; 69 70 /* public */ 71 void (*realize)(PCDIMMDevice *dimm, Error **errp); 72 MemoryRegion *(*get_vmstate_memory_region)(PCDIMMDevice *dimm, 73 Error **errp); 74 } PCDIMMDeviceClass; 75 76 void pc_dimm_pre_plug(PCDIMMDevice *dimm, MachineState *machine, 77 const uint64_t *legacy_align, Error **errp); 78 void pc_dimm_plug(PCDIMMDevice *dimm, MachineState *machine, Error **errp); 79 void pc_dimm_unplug(PCDIMMDevice *dimm, MachineState *machine); 80 #endif 81