path: root/include/hw/ptimer.h

/*
 * General purpose implementation of a simple periodic countdown timer.
 *
 * Copyright (c) 2007 CodeSourcery.
 *
 * This code is licensed under the GNU LGPL.
 */
#ifndef PTIMER_H
#define PTIMER_H

#include "qemu-common.h"
#include "qemu/timer.h"
#include "migration/vmstate.h"

/* ptimer.c */
typedef struct ptimer_state ptimer_state;
typedef void (*ptimer_cb)(void *opaque);

ptimer_state *ptimer_init(QEMUBH *bh);
void ptimer_set_period(ptimer_state *s, int64_t period);
void ptimer_set_freq(ptimer_state *s, uint32_t freq);
void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload);
uint64_t ptimer_get_count(ptimer_state *s);
void ptimer_set_count(ptimer_state *s, uint64_t count);
void ptimer_run(ptimer_state *s, int oneshot);
void ptimer_stop(ptimer_state *s);

extern const VMStateDescription vmstate_ptimer;

#define VMSTATE_PTIMER(_field, _state) \
    VMSTATE_STRUCT_POINTER_V(_field, _state, 1, vmstate_ptimer, ptimer_state)

#define VMSTATE_PTIMER_ARRAY(_f, _s, _n)                                \
    VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(_f, _s, _n, 0,                   \
                                       vmstate_ptimer, ptimer_state)

#endif