diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/apic.c | 22 | ||||
| -rw-r--r-- | hw/mc146818rtc.c | 57 | ||||
| -rw-r--r-- | hw/pc.h | 2 |
3 files changed, 81 insertions, 0 deletions
diff --git a/hw/apic.c b/hw/apic.c index bad137f826..3052843c87 100644 --- a/hw/apic.c +++ b/hw/apic.c @@ -100,6 +100,8 @@ struct IOAPICState { static int apic_io_memory; static APICState *local_apics[MAX_APICS + 1]; static int last_apic_id = 0; +static int apic_irq_delivered; + static void apic_init_ipi(APICState *s); static void apic_set_irq(APICState *s, int vector_num, int trigger_mode); @@ -133,6 +135,14 @@ static inline void reset_bit(uint32_t *tab, int index) tab[i] &= ~mask; } +static inline int get_bit(uint32_t *tab, int index) +{ + int i, mask; + i = index >> 5; + mask = 1 << (index & 0x1f); + return !!(tab[i] & mask); +} + static void apic_local_deliver(CPUState *env, int vector) { APICState *s = env->apic_state; @@ -349,8 +359,20 @@ static void apic_update_irq(APICState *s) cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD); } +void apic_reset_irq_delivered(void) +{ + apic_irq_delivered = 0; +} + +int apic_get_irq_delivered(void) +{ + return apic_irq_delivered; +} + static void apic_set_irq(APICState *s, int vector_num, int trigger_mode) { + apic_irq_delivered += !get_bit(s->irr, vector_num); + set_bit(s->irr, vector_num); if (trigger_mode) set_bit(s->tmr, vector_num); diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c index f57a9a6783..cd57bf3760 100644 --- a/hw/mc146818rtc.c +++ b/hw/mc146818rtc.c @@ -67,6 +67,10 @@ struct RTCState { int64_t next_periodic_time; /* second update */ int64_t next_second_time; +#ifdef TARGET_I386 + uint32_t irq_coalesced; + uint32_t period; +#endif QEMUTimer *second_timer; QEMUTimer *second_timer2; }; @@ -104,12 +108,20 @@ static void rtc_timer_update(RTCState *s, int64_t current_time) 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); } } @@ -119,6 +131,12 @@ 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); } @@ -379,6 +397,15 @@ 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) { + 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: @@ -473,6 +500,28 @@ static int rtc_load(QEMUFile *f, void *opaque, int version_id) return 0; } +#ifdef TARGET_I386 +static void rtc_save_td(QEMUFile *f, void *opaque) +{ + RTCState *s = opaque; + + qemu_put_be32(f, s->irq_coalesced); + qemu_put_be32(f, s->period); +} + +static int rtc_load_td(QEMUFile *f, void *opaque, int version_id) +{ + RTCState *s = opaque; + + if (version_id != 1) + return -EINVAL; + + s->irq_coalesced = qemu_get_be32(f); + s->period = qemu_get_be32(f); + return 0; +} +#endif + RTCState *rtc_init(int base, qemu_irq irq) { RTCState *s; @@ -503,6 +552,10 @@ RTCState *rtc_init(int base, qemu_irq irq) register_ioport_read(base, 2, 1, cmos_ioport_read, s); register_savevm("mc146818rtc", base, 1, rtc_save, rtc_load, s); +#ifdef TARGET_I386 + if (rtc_td_hack) + register_savevm("mc146818rtc-td", base, 1, rtc_save_td, rtc_load_td, s); +#endif return s; } @@ -609,5 +662,9 @@ RTCState *rtc_mm_init(target_phys_addr_t base, int it_shift, qemu_irq irq) cpu_register_physical_memory(base, 2 << it_shift, io_memory); register_savevm("mc146818rtc", base, 1, rtc_save, rtc_load, s); +#ifdef TARGET_I386 + if (rtc_td_hack) + register_savevm("mc146818rtc-td", base, 1, rtc_save_td, rtc_load_td, s); +#endif return s; } diff --git a/hw/pc.h b/hw/pc.h index a60bddf0f9..5dc770985e 100644 --- a/hw/pc.h +++ b/hw/pc.h @@ -46,6 +46,8 @@ void apic_deliver_pic_intr(CPUState *env, int level); int apic_get_interrupt(CPUState *env); IOAPICState *ioapic_init(void); void ioapic_set_irq(void *opaque, int vector, int level); +void apic_reset_irq_delivered(void); +int apic_get_irq_delivered(void); /* i8254.c */ |