LXR qemu/include/hw/misc/vmcoreinfo.h

   1/*
   2 * Virtual Machine coreinfo device
   3 *
   4 * Copyright (C) 2017 Red Hat, Inc.
   5 *
   6 * Authors: Marc-André Lureau <marcandre.lureau@redhat.com>
   7 *
   8 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   9 * See the COPYING file in the top-level directory.
  10 *
  11 */
  12#ifndef VMCOREINFO_H
  13#define VMCOREINFO_H
  14
  15#include "hw/qdev.h"
  16
  17#define VMCOREINFO_DEVICE "vmcoreinfo"
  18#define VMCOREINFO(obj) OBJECT_CHECK(VMCoreInfoState, (obj), VMCOREINFO_DEVICE)
  19
  20#define VMCOREINFO_FORMAT_NONE 0x0
  21#define VMCOREINFO_FORMAT_ELF 0x1
  22
  23/* all fields are little-endian */
  24typedef struct FWCfgVMCoreInfo {
  25    uint16_t host_format; /* set on reset */
  26    uint16_t guest_format;
  27    uint32_t size;
  28    uint64_t paddr;
  29} QEMU_PACKED FWCfgVMCoreInfo;
  30
  31typedef struct VMCoreInfoState {
  32    DeviceClass parent_obj;
  33
  34    bool has_vmcoreinfo;
  35    FWCfgVMCoreInfo vmcoreinfo;
  36} VMCoreInfoState;
  37
  38/* returns NULL unless there is exactly one device */
  39static inline VMCoreInfoState *vmcoreinfo_find(void)
  40{
  41    Object *o = object_resolve_path_type("", VMCOREINFO_DEVICE, NULL);
  42
  43    return o ? VMCOREINFO(o) : NULL;
  44}
  45
  46#endif
  47