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.h" 15 #include "s390-tod.h" 16 17 typedef struct S390TOD { 18 uint8_t high; 19 uint64_t low; 20 } S390TOD; 21 22 #define TYPE_S390_TOD "s390-tod" 23 #define S390_TOD(obj) OBJECT_CHECK(S390TODState, (obj), TYPE_S390_TOD) 24 #define S390_TOD_CLASS(oc) OBJECT_CLASS_CHECK(S390TODClass, (oc), \ 25 TYPE_S390_TOD) 26 #define S390_TOD_GET_CLASS(obj) OBJECT_GET_CLASS(S390TODClass, (obj), \ 27 TYPE_S390_TOD) 28 #define TYPE_KVM_S390_TOD TYPE_S390_TOD "-kvm" 29 #define TYPE_QEMU_S390_TOD TYPE_S390_TOD "-qemu" 30 31 typedef struct S390TODState { 32 /* private */ 33 DeviceState parent_obj; 34 35 /* 36 * Used by TCG to remember the time base. Used by KVM to backup the TOD 37 * while the TOD is stopped. 38 */ 39 S390TOD base; 40 /* Used by KVM to remember if the TOD is stopped and base is valid. */ 41 bool stopped; 42 } S390TODState; 43 44 typedef struct S390TODClass { 45 /* private */ 46 DeviceClass parent_class; 47 void (*parent_realize)(DeviceState *dev, Error **errp); 48 49 /* public */ 50 void (*get)(const S390TODState *td, S390TOD *tod, Error **errp); 51 void (*set)(S390TODState *td, const S390TOD *tod, Error **errp); 52 } S390TODClass; 53 54 void s390_init_tod(void); 55 S390TODState *s390_get_todstate(void); 56 57 #endif 58