LXR qemu/hw/ptimer.h

   1/*
   2 * General purpose implementation of a simple periodic countdown timer.
   3 *
   4 * Copyright (c) 2007 CodeSourcery.
   5 *
   6 * This code is licensed under the GNU LGPL.
   7 */
   8#ifndef PTIMER_H
   9#define PTIMER_H
  10
  11#include "qemu-common.h"
  12#include "qemu-timer.h"
  13#include "vmstate.h"
  14
  15/* ptimer.c */
  16typedef struct ptimer_state ptimer_state;
  17typedef void (*ptimer_cb)(void *opaque);
  18
  19ptimer_state *ptimer_init(QEMUBH *bh);
  20void ptimer_set_period(ptimer_state *s, int64_t period);
  21void ptimer_set_freq(ptimer_state *s, uint32_t freq);
  22void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload);
  23uint64_t ptimer_get_count(ptimer_state *s);
  24void ptimer_set_count(ptimer_state *s, uint64_t count);
  25void ptimer_run(ptimer_state *s, int oneshot);
  26void ptimer_stop(ptimer_state *s);
  27
  28extern const VMStateDescription vmstate_ptimer;
  29
  30#define VMSTATE_PTIMER(_field, _state) {                             \
  31    .name       = (stringify(_field)),                               \
  32    .version_id = (1),                                               \
  33    .vmsd       = &vmstate_ptimer,                                   \
  34    .size       = sizeof(ptimer_state *),                            \
  35    .flags      = VMS_STRUCT|VMS_POINTER,                            \
  36    .offset     = vmstate_offset_pointer(_state, _field, ptimer_state), \
  37}
  38
  39#endif
  40