LXR qemu/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 "sysemu/hostmem.h"
  21#include "hw/qdev.h"
  22
  23#define DEFAULT_PC_DIMMSIZE (1024*1024*1024)
  24
  25#define TYPE_PC_DIMM "pc-dimm"
  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 */
  50typedef 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} PCDIMMDevice;
  60
  61/**
  62 * PCDIMMDeviceClass:
  63 * @get_memory_region: returns #MemoryRegion associated with @dimm
  64 */
  65typedef struct PCDIMMDeviceClass {
  66    /* private */
  67    DeviceClass parent_class;
  68
  69    /* public */
  70    MemoryRegion *(*get_memory_region)(PCDIMMDevice *dimm);
  71} PCDIMMDeviceClass;
  72
  73/**
  74 * MemoryHotplugState:
  75 * @base: address in guest RAM address space where hotplug memory
  76 * address space begins.
  77 * @mr: hotplug memory address space container
  78 */
  79typedef struct MemoryHotplugState {
  80    hwaddr base;
  81    MemoryRegion mr;
  82} MemoryHotplugState;
  83
  84uint64_t pc_dimm_get_free_addr(uint64_t address_space_start,
  85                               uint64_t address_space_size,
  86                               uint64_t *hint, uint64_t align, uint64_t size,
  87                               Error **errp);
  88
  89int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp);
  90
  91int qmp_pc_dimm_device_list(Object *obj, void *opaque);
  92uint64_t pc_existing_dimms_capacity(Error **errp);
  93void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms,
  94                         MemoryRegion *mr, uint64_t align, Error **errp);
  95void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms,
  96                           MemoryRegion *mr);
  97#endif
  98