static void cmos_ioport_write(void *opaque, uint32_t addr, uint32_t data)
{
RTCState *s = opaque;
if ((addr & 1) == 0) {
s->cmos_index = data & 0x7f;
} else {
CMOS_DPRINTF("cmos: write index=0x%02x val=0x%02x\n",
s->cmos_index, data);
switch(s->cmos_index) {
case RTC_SECONDS_ALARM:
case RTC_MINUTES_ALARM:
case RTC_HOURS_ALARM:
/* XXX: not supported */
s->cmos_data[s->cmos_index] = data;
break;
case RTC_SECONDS:
case RTC_MINUTES:
case RTC_HOURS:
case RTC_DAY_OF_WEEK:
case RTC_DAY_OF_MONTH:
case RTC_MONTH:
case RTC_YEAR:
s->cmos_data[s->cmos_index] = data;
/* if in set mode, do not update the time */
if (!(s->cmos_data[RTC_REG_B] & REG_B_SET)) {
rtc_set_time(s);
}
break;
case RTC_REG_A:
/* UIP bit is read only */
s->cmos_data[RTC_REG_A] = (data & ~REG_A_UIP) |
(s->cmos_data[RTC_REG_A] & REG_A_UIP);
rtc_timer_update(s, qemu_get_clock(rtc_clock));
break;
case RTC_REG_B:
if (data & REG_B_SET) {
/* set mode: reset UIP mode */
s->cmos_data[RTC_REG_A] &= ~REG_A_UIP;
data &= ~REG_B_UIE;
} else {
/* if disabling set mode, update the time */
if (s->cmos_data[RTC_REG_B] & REG_B_SET) {
rtc_set_time(s);
}
}
s->cmos_data[RTC_REG_B] = data;
rtc_timer_update(s, qemu_get_clock(rtc_clock));
break;
case RTC_REG_C:
case RTC_REG_D:
/* cannot write to them */
break;
default:
s->cmos_data[s->cmos_index] = data;
break;
}
}
}
/* Reload the hardware state from a saved domain */
static int rtc_load(struct domain *d, hvm_domain_context_t *h)
{
RTCState *s = domain_vrtc(d);
if ( !has_vrtc(d) )
return -ENODEV;
spin_lock(&s->lock);
/* Restore the registers */
if ( hvm_load_entry(RTC, h, &s->hw) != 0 )
{
spin_unlock(&s->lock);
return -EINVAL;
}
/* Reset the wall-clock time. In normal running, this runs with host
* time, so let's keep doing that. */
s->current_tm = gmtime(get_localtime(d));
rtc_copy_date(s);
/* Reset the periodic interrupt timer based on the registers */
rtc_timer_update(s);
check_update_timer(s);
alarm_timer_update(s);
spin_unlock(&s->lock);
return 0;
}
static void rtc_periodic_timer(void *opaque)
{
RTCState *s = opaque;
rtc_timer_update(s, s->next_periodic_time);
if (s->cmos_data[RTC_REG_B] & REG_B_PIE) {
s->cmos_data[RTC_REG_C] |= 0xc0;
#ifdef TARGET_I386
if(rtc_td_hack) {
if (s->irq_reinject_on_ack_count >= RTC_REINJECT_ON_ACK_COUNT)
s->irq_reinject_on_ack_count = 0;
apic_reset_irq_delivered();
qemu_irq_raise(s->irq);
if (!apic_get_irq_delivered()) {
s->irq_coalesced++;
rtc_coalesced_timer_update(s);
DPRINTF_C("cmos: coalesced irqs increased to %d\n",
s->irq_coalesced);
}
} else
#endif
qemu_irq_raise(s->irq);
}
if (s->cmos_data[RTC_REG_B] & REG_B_SQWE) {
/* Not square wave at all but we don't want 2048Hz interrupts!
Must be seen as a pulse. */
qemu_irq_raise(s->sqw_irq);
}
}
static void rtc_periodic_timer(void *opaque)
{
RTCState *s = opaque;
rtc_timer_update(s, s->next_periodic_time);
if (s->cmos_data[RTC_REG_B] & REG_B_PIE) {
s->cmos_data[RTC_REG_C] |= 0xc0;
#ifdef TARGET_I386
if(rtc_td_hack) {
apic_reset_irq_delivered();
rtc_irq_raise(s->irq);
if (!apic_get_irq_delivered()) {
s->irq_coalesced++;
rtc_coalesced_timer_update(s);
}
} else
#endif
rtc_irq_raise(s->irq);
}
if (s->cmos_data[RTC_REG_B] & REG_B_SQWE) {
/* Not square wave at all but we don't want 2048Hz interrupts!
Must be seen as a pulse. */
qemu_irq_raise(s->sqw_irq);
}
}
void rtc_callback(void *arg){
rtc_timer_update(true);
if(soft_watchdog > 0){
soft_watchdog--;
if(soft_watchdog == 0)
system_restart();
}
}
static uint32_t rtc_ioport_read(RTCState *s, uint32_t addr)
{
int ret;
struct domain *d = vrtc_domain(s);
if ( (addr & 1) == 0 )
return 0xff;
spin_lock(&s->lock);
switch ( s->hw.cmos_index )
{
case RTC_SECONDS:
case RTC_MINUTES:
case RTC_HOURS:
case RTC_DAY_OF_WEEK:
case RTC_DAY_OF_MONTH:
case RTC_MONTH:
case RTC_YEAR:
/* if not in set mode, adjust cmos before reading*/
if (!(s->hw.cmos_data[RTC_REG_B] & RTC_SET))
{
s->current_tm = gmtime(get_localtime(d));
rtc_copy_date(s);
}
ret = s->hw.cmos_data[s->hw.cmos_index];
break;
case RTC_REG_A:
ret = s->hw.cmos_data[s->hw.cmos_index];
if ((s->use_timer == 0) && update_in_progress(s))
ret |= RTC_UIP;
break;
case RTC_REG_C:
ret = s->hw.cmos_data[s->hw.cmos_index];
s->hw.cmos_data[RTC_REG_C] = 0x00;
if ( (ret & RTC_IRQF) && !rtc_mode_is(s, no_ack) )
hvm_isa_irq_deassert(d, RTC_IRQ);
rtc_update_irq(s);
check_update_timer(s);
alarm_timer_update(s);
rtc_timer_update(s);
break;
default:
ret = s->hw.cmos_data[s->hw.cmos_index];
break;
}
spin_unlock(&s->lock);
return ret;
}
static void rtc_timer_update(RTCState *s, int64_t current_time)
{
int period_code, period;
int64_t cur_clock, next_irq_clock;
period_code = s->cmos_data[RTC_REG_A] & 0x0f;
#if defined TARGET_I386 || defined TARGET_X86_64
/* disable periodic timer if hpet is in legacy mode, since interrupts are
* disabled anyway.
*/
if (period_code != 0 && (s->cmos_data[RTC_REG_B] & REG_B_PIE) && !hpet_in_legacy_mode()) {
#else
if (period_code != 0 && (s->cmos_data[RTC_REG_B] & REG_B_PIE)) {
#endif
if (period_code <= 2)
period_code += 7;
/* period in 32 Khz cycles */
period = 1 << (period_code - 1);
#ifdef TARGET_I386
if(period != s->period)
s->irq_coalesced = (s->irq_coalesced * s->period) / period;
s->period = period;
#endif
/* compute 32 khz clock */
cur_clock = muldiv64(current_time, 32768, ticks_per_sec);
next_irq_clock = (cur_clock & ~(period - 1)) + period;
s->next_periodic_time = muldiv64(next_irq_clock, ticks_per_sec, 32768) + 1;
qemu_mod_timer(s->periodic_timer, s->next_periodic_time);
} else {
#ifdef TARGET_I386
s->irq_coalesced = 0;
#endif
qemu_del_timer(s->periodic_timer);
}
}
static void rtc_periodic_timer(void *opaque)
{
RTCState *s = opaque;
rtc_timer_update(s, s->next_periodic_time);
#ifdef TARGET_I386
if ((s->cmos_data[RTC_REG_C] & 0xc0) && rtc_td_hack) {
s->irq_coalesced++;
return;
}
#endif
s->cmos_data[RTC_REG_C] |= 0xc0;
rtc_irq_raise(s->irq);
}
static void rtc_notify_clock_reset(Notifier *notifier, void *data)
{
RTCState *s = container_of(notifier, RTCState, clock_reset_notifier);
int64_t now = *(int64_t *)data;
rtc_set_date_from_host(&s->dev);
s->next_second_time = now + (get_ticks_per_sec() * 99) / 100;
qemu_mod_timer(s->second_timer2, s->next_second_time);
rtc_timer_update(s, now);
#ifdef TARGET_I386
if (rtc_td_hack) {
rtc_coalesced_timer_update(s);
}
#endif
}
// Lua: tmr.time() , return rtc time in second
static int tmr_time( lua_State* L ){
uint64_t us=rtc_timer_update(false);
lua_pushinteger(L, us/1000000);
return 1;
}
static int rtc_ioport_write(void *opaque, uint32_t addr, uint32_t data)
{
RTCState *s = opaque;
struct domain *d = vrtc_domain(s);
uint32_t orig;
spin_lock(&s->lock);
if ( (addr & 1) == 0 )
{
data &= 0x7f;
s->hw.cmos_index = data;
spin_unlock(&s->lock);
return (data < RTC_CMOS_SIZE);
}
if ( s->hw.cmos_index >= RTC_CMOS_SIZE )
{
spin_unlock(&s->lock);
return 0;
}
orig = s->hw.cmos_data[s->hw.cmos_index];
switch ( s->hw.cmos_index )
{
case RTC_SECONDS_ALARM:
case RTC_MINUTES_ALARM:
case RTC_HOURS_ALARM:
s->hw.cmos_data[s->hw.cmos_index] = data;
alarm_timer_update(s);
break;
case RTC_SECONDS:
case RTC_MINUTES:
case RTC_HOURS:
case RTC_DAY_OF_WEEK:
case RTC_DAY_OF_MONTH:
case RTC_MONTH:
case RTC_YEAR:
/* if in set mode, just write the register */
if ( (s->hw.cmos_data[RTC_REG_B] & RTC_SET) )
s->hw.cmos_data[s->hw.cmos_index] = data;
else
{
/* Fetch the current time and update just this field. */
s->current_tm = gmtime(get_localtime(d));
rtc_copy_date(s);
s->hw.cmos_data[s->hw.cmos_index] = data;
rtc_set_time(s);
}
alarm_timer_update(s);
break;
case RTC_REG_A:
/* UIP bit is read only */
s->hw.cmos_data[RTC_REG_A] = (data & ~RTC_UIP) | (orig & RTC_UIP);
if ( (data ^ orig) & ~RTC_UIP )
rtc_timer_update(s);
break;
case RTC_REG_B:
if ( data & RTC_SET )
{
/* set mode: reset UIP mode */
s->hw.cmos_data[RTC_REG_A] &= ~RTC_UIP;
/* adjust cmos before stopping */
if (!(orig & RTC_SET))
{
s->current_tm = gmtime(get_localtime(d));
rtc_copy_date(s);
}
}
else
{
/* if disabling set mode, update the time */
if ( orig & RTC_SET )
rtc_set_time(s);
}
check_for_pf_ticks(s);
s->hw.cmos_data[RTC_REG_B] = data;
/*
* If the interrupt is already set when the interrupt becomes
* enabled, raise an interrupt immediately.
*/
rtc_update_irq(s);
if ( (data ^ orig) & RTC_PIE )
{
TRACE_0D(TRC_HVM_EMUL_RTC_STOP_TIMER);
destroy_periodic_time(&s->pt);
s->period = 0;
rtc_timer_update(s);
}
if ( (data ^ orig) & RTC_SET )
check_update_timer(s);
if ( (data ^ orig) & (RTC_24H | RTC_DM_BINARY | RTC_SET) )
alarm_timer_update(s);
break;
case RTC_REG_C:
case RTC_REG_D:
/* cannot write to them */
break;
}
spin_unlock(&s->lock);
return 1;
}
static int rtc_ioport_write(void *opaque, uint32_t addr, uint32_t data)
{
RTCState *s = opaque;
struct domain *d = vrtc_domain(s);
uint32_t orig;
spin_lock(&s->lock);
if ( (addr & 1) == 0 )
{
data &= 0x7f;
s->hw.cmos_index = data;
spin_unlock(&s->lock);
return (data < RTC_CMOS_SIZE);
}
if ( s->hw.cmos_index >= RTC_CMOS_SIZE )
{
spin_unlock(&s->lock);
return 0;
}
orig = s->hw.cmos_data[s->hw.cmos_index];
switch ( s->hw.cmos_index )
{
case RTC_SECONDS_ALARM:
case RTC_MINUTES_ALARM:
case RTC_HOURS_ALARM:
s->hw.cmos_data[s->hw.cmos_index] = data;
alarm_timer_update(s);
break;
case RTC_SECONDS:
case RTC_MINUTES:
case RTC_HOURS:
case RTC_DAY_OF_WEEK:
case RTC_DAY_OF_MONTH:
case RTC_MONTH:
case RTC_YEAR:
s->hw.cmos_data[s->hw.cmos_index] = data;
/* if in set mode, do not update the time */
if ( !(s->hw.cmos_data[RTC_REG_B] & RTC_SET) )
rtc_set_time(s);
alarm_timer_update(s);
break;
case RTC_REG_A:
/* UIP bit is read only */
s->hw.cmos_data[RTC_REG_A] = (data & ~RTC_UIP) | (orig & RTC_UIP);
if ( (data ^ orig) & ~RTC_UIP )
rtc_timer_update(s);
break;
case RTC_REG_B:
if ( data & RTC_SET )
{
/* set mode: reset UIP mode */
s->hw.cmos_data[RTC_REG_A] &= ~RTC_UIP;
/* adjust cmos before stopping */
if (!(s->hw.cmos_data[RTC_REG_B] & RTC_SET))
{
s->current_tm = gmtime(get_localtime(d));
rtc_copy_date(s);
}
}
else
{
/* if disabling set mode, update the time */
if ( s->hw.cmos_data[RTC_REG_B] & RTC_SET )
rtc_set_time(s);
}
/* if the interrupt is already set when the interrupt become
* enabled, raise an interrupt immediately*/
if ((data & RTC_UIE) && !(s->hw.cmos_data[RTC_REG_B] & RTC_UIE))
if (s->hw.cmos_data[RTC_REG_C] & RTC_UF)
{
hvm_isa_irq_deassert(d, RTC_IRQ);
hvm_isa_irq_assert(d, RTC_IRQ);
}
s->hw.cmos_data[RTC_REG_B] = data;
if ( (data ^ orig) & RTC_PIE )
rtc_timer_update(s);
check_update_timer(s);
alarm_timer_update(s);
break;
case RTC_REG_C:
case RTC_REG_D:
/* cannot write to them */
break;
}
spin_unlock(&s->lock);
return 1;
}