diff options
Diffstat (limited to 'hw/mc146818rtc.c')
| -rw-r--r-- | hw/mc146818rtc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c index b8c7b0c1b..e4d55c7c7 100644 --- a/hw/mc146818rtc.c +++ b/hw/mc146818rtc.c @@ -30,6 +30,8 @@ //#define DEBUG_CMOS +#define RTC_REINJECT_ON_ACK_COUNT 1000 + #define RTC_SECONDS 0 #define RTC_SECONDS_ALARM 1 #define RTC_MINUTES 2 @@ -76,6 +78,7 @@ struct RTCState { int64_t next_periodic_time; /* second update */ int64_t next_second_time; + uint16_t irq_reinject_on_ack_count; uint32_t irq_coalesced; uint32_t period; QEMUTimer *coalesced_timer; @@ -180,6 +183,8 @@ static void rtc_periodic_timer(void *opaque) 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(); rtc_irq_raise(s->irq); if (!apic_get_irq_delivered()) { @@ -458,6 +463,18 @@ static uint32_t cmos_ioport_read(void *opaque, uint32_t addr) case RTC_REG_C: ret = s->cmos_data[s->cmos_index]; qemu_irq_lower(s->irq); +#ifdef TARGET_I386 + if(s->irq_coalesced && + s->irq_reinject_on_ack_count < RTC_REINJECT_ON_ACK_COUNT) { + s->irq_reinject_on_ack_count++; + apic_reset_irq_delivered(); + qemu_irq_raise(s->irq); + if (apic_get_irq_delivered()) + s->irq_coalesced--; + break; + } +#endif + s->cmos_data[RTC_REG_C] = 0x00; break; default: |