1 /* 2 * TOD (Time Of Day) clock 3 * 4 * Copyright 2018 Red Hat, Inc. 5 * Author(s): David Hildenbrand <david@redhat.com> 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or later. 8 * See the COPYING file in the top-level directory. 9 */ 10 11 #ifndef HW_S390_TOD_H 12 #define HW_S390_TOD_H 13 14 #include "hw/qdev-core.h" 15 #include "tcg/s390-tod.h" 16 #include "qom/object.h" 17 18 typedef struct S390TOD { 19 uint8_t high; 20 uint64_t low; 21 } S390TOD; 22 23 #define TYPE_S390_TOD "s390-tod" 24 OBJECT_DECLARE_TYPE(S390TODState, S390TODClass, S390_TOD) 25 #define TYPE_KVM_S390_TOD TYPE_S390_TOD "-kvm" 26 #define TYPE_QEMU_S390_TOD TYPE_S390_TOD "-qemu" 27 28 struct S390TODState { 29 /* private */ 30 DeviceState parent_obj; 31 32 /* 33 * Used by TCG to remember the time base. Used by KVM to backup the TOD 34 * while the TOD is stopped. 35 */ 36 S390TOD base; 37 /* Used by KVM to remember if the TOD is stopped and base is valid. */ 38 bool stopped; 39 }; 40 41 struct S390TODClass { 42 /* private */ 43 DeviceClass parent_class; 44 void (*parent_realize)(DeviceState *dev, Error **errp); 45 46 /* public */ 47 void (*get)(const S390TODState *td, S390TOD *tod, Error **errp); 48 void (*set)(S390TODState *td, const S390TOD *tod, Error **errp); 49 }; 50 51 void s390_init_tod(void); 52 S390TODState *s390_get_todstate(void); 53 54 #endif 55