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/*
* QEMU MC146818 RTC emulation
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* SPDX-License-Identifier: MIT
*/
#ifndef HW_RTC_MC146818RTC_H
#define HW_RTC_MC146818RTC_H
#include "qapi/qapi-types-misc.h"
#include "qemu/queue.h"
#include "qemu/timer.h"
#include "hw/isa/isa.h"
#include "qom/object.h"
#define TYPE_MC146818_RTC "mc146818rtc"
typedef struct RTCState RTCState;
DECLARE_INSTANCE_CHECKER(RTCState, MC146818_RTC,
TYPE_MC146818_RTC)
struct RTCState {
ISADevice parent_obj;
MemoryRegion io;
MemoryRegion coalesced_io;
uint8_t cmos_data[128];
uint8_t cmos_index;
int32_t base_year;
uint64_t base_rtc;
uint64_t last_update;
int64_t offset;
qemu_irq irq;
int it_shift;
/* periodic timer */
QEMUTimer *periodic_timer;
int64_t next_periodic_time;
/* update-ended timer */
QEMUTimer *update_timer;
uint64_t next_alarm_time;
uint16_t irq_reinject_on_ack_count;
uint32_t irq_coalesced;
uint32_t period;
QEMUTimer *coalesced_timer;
Notifier clock_reset_notifier;
LostTickPolicy lost_tick_policy;
Notifier suspend_notifier;
QLIST_ENTRY(RTCState) link;
};
#define RTC_ISA_IRQ 8
#define RTC_ISA_BASE 0x70
ISADevice *mc146818_rtc_init(ISABus *bus, int base_year,
qemu_irq intercept_irq);
void rtc_set_memory(ISADevice *dev, int addr, int val);
int rtc_get_memory(ISADevice *dev, int addr);
#endif /* MC146818RTC_H */
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