LXR qemu/include/hw/rtc/mc146818rtc.h

   1/*
   2 * QEMU MC146818 RTC emulation
   3 *
   4 * Copyright (c) 2003-2004 Fabrice Bellard
   5 *
   6 * SPDX-License-Identifier: MIT
   7 */
   8
   9#ifndef HW_RTC_MC146818RTC_H
  10#define HW_RTC_MC146818RTC_H
  11
  12#include "qapi/qapi-types-machine.h"
  13#include "qemu/queue.h"
  14#include "qemu/timer.h"
  15#include "hw/isa/isa.h"
  16#include "qom/object.h"
  17
  18#define TYPE_MC146818_RTC "mc146818rtc"
  19OBJECT_DECLARE_SIMPLE_TYPE(MC146818RtcState, MC146818_RTC)
  20
  21struct MC146818RtcState {
  22    ISADevice parent_obj;
  23
  24    MemoryRegion io;
  25    MemoryRegion coalesced_io;
  26    uint8_t cmos_data[128];
  27    uint8_t cmos_index;
  28    uint8_t isairq;
  29    uint16_t io_base;
  30    int32_t base_year;
  31    uint64_t base_rtc;
  32    uint64_t last_update;
  33    int64_t offset;
  34    qemu_irq irq;
  35    int it_shift;
  36    /* periodic timer */
  37    QEMUTimer *periodic_timer;
  38    int64_t next_periodic_time;
  39    /* update-ended timer */
  40    QEMUTimer *update_timer;
  41    uint64_t next_alarm_time;
  42    uint16_t irq_reinject_on_ack_count;
  43    uint32_t irq_coalesced;
  44    uint32_t period;
  45    QEMUTimer *coalesced_timer;
  46    Notifier clock_reset_notifier;
  47    LostTickPolicy lost_tick_policy;
  48    Notifier suspend_notifier;
  49    QLIST_ENTRY(MC146818RtcState) link;
  50};
  51
  52#define RTC_ISA_IRQ 8
  53
  54MC146818RtcState *mc146818_rtc_init(ISABus *bus, int base_year,
  55                                    qemu_irq intercept_irq);
  56void mc146818rtc_set_cmos_data(MC146818RtcState *s, int addr, int val);
  57int mc146818rtc_get_cmos_data(MC146818RtcState *s, int addr);
  58void qmp_rtc_reset_reinjection(Error **errp);
  59
  60#endif /* HW_RTC_MC146818RTC_H */
  61