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-core.h"
  16 #include "standard-headers/linux/qemu_fw_cfg.h"
  17 #include "qom/object.h"
  18
  19 #define VMCOREINFO_DEVICE "vmcoreinfo"
  20 typedef struct VMCoreInfoState VMCoreInfoState;
  21 DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO,
  22                          VMCOREINFO_DEVICE)
  23
  24 typedef struct fw_cfg_vmcoreinfo FWCfgVMCoreInfo;
  25
  26 struct VMCoreInfoState {
  27     DeviceState parent_obj;
  28
  29     bool has_vmcoreinfo;
  30     FWCfgVMCoreInfo vmcoreinfo;
  31 };
  32
  33 /* returns NULL unless there is exactly one device */
  34 static inline VMCoreInfoState *vmcoreinfo_find(void)
  35 {
  36     Object *o = object_resolve_path_type("", VMCOREINFO_DEVICE, NULL);
  37
  38     return o ? VMCOREINFO(o) : NULL;
  39 }
  40
  41 #endif