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 "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  */
  60 struct PCDIMMDeviceClass {
  61     /* private */
  62     DeviceClass parent_class;
  63
  64     /* public */
  65     void (*realize)(PCDIMMDevice *dimm, Error **errp);
  66     void (*unrealize)(PCDIMMDevice *dimm);
  67 };
  68
  69 void pc_dimm_pre_plug(PCDIMMDevice *dimm, MachineState *machine, Error **errp);
  70 void pc_dimm_plug(PCDIMMDevice *dimm, MachineState *machine);
  71 void pc_dimm_unplug(PCDIMMDevice *dimm, MachineState *machine);
  72 #endif