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hw/ptimer: Introduce timer policy feature

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Some of the timer devices may behave differently from what ptimer
provides. Introduce ptimer policy feature that allows ptimer users to
change default and wrong timer behaviour, for example to continuously
trigger periodic timer when load value is equal to "0".

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Message-id: 994cd608ec392da6e58f0643800dda595edb9d97.1473252818.git.digetx@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Dmitry Osipenko 2016-09-22 18:13:06 +01:00 • committed by Peter Maydell
parent 780d23e54e
commit e7ea81c37d
24 changed files with 57 additions and 31 deletions
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4
hw/core/ptimer.c
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@ -21,6 +21,7 @@ struct ptimer_state
int64_t period;
int64_t last_event;
int64_t next_event;
uint8_t policy_mask;
QEMUBH *bh;
QEMUTimer *timer;
};
@ -243,12 +244,13 @@ const VMStateDescription vmstate_ptimer = {
}
};
ptimer_state *ptimer_init(QEMUBH *bh)
ptimer_state *ptimer_init(QEMUBH *bh, uint8_t policy_mask)
{
ptimer_state *s;
s = (ptimer_state *)g_malloc0(sizeof(ptimer_state));
s->bh = bh;
s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, ptimer_tick, s);
s->policy_mask = policy_mask;
return s;
}