| 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/core/qdev.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 |