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 42