1 files changed, 58 insertions, 0 deletions
diff --git a/include/hw/rtc/mc146818rtc.h b/include/hw/rtc/mc146818rtc.h
new file mode 100644
index 000000000..5b45b2292
--- /dev/null
+++ b/include/hw/rtc/mc146818rtc.h
@@ -0,0 +1,58 @@
+/*
+ * 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-machine.h"
+#include "qemu/queue.h"
+#include "qemu/timer.h"
+#include "hw/isa/isa.h"
+#include "qom/object.h"
+
+#define TYPE_MC146818_RTC "mc146818rtc"
+OBJECT_DECLARE_SIMPLE_TYPE(RTCState, 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 */