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mc146818rtc: embrace all x86 specific code

Browse source 
Introduce a function, rtc_policy_slew_deliver_irq(), which delivers
irq if LOST_TICK_POLICY_SLEW is used, as which is only supported on
x86, other platforms call it will trigger a assert

After that, we can move the x86 specific code to the common place

Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Message-Id: <20170510083259.3900-6-xiaoguangrong@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Xiao Guangrong 2017-05-10 16:32:59 +08:00 • committed by Paolo Bonzini
parent 388ad5d296
commit e0c8b950d1
1 changed files with 31 additions and 29 deletions
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60
hw/timer/mc146818rtc.c
View file

@ -125,17 +125,34 @@ static void rtc_coalesced_timer_update(RTCState *s)
} }
} }
static QLIST_HEAD(, RTCState) rtc_devices =
QLIST_HEAD_INITIALIZER(rtc_devices);
#ifdef TARGET_I386 #ifdef TARGET_I386
void qmp_rtc_reset_reinjection(Error **errp)
{
RTCState *s;
QLIST_FOREACH(s, &rtc_devices, link) {
s->irq_coalesced = 0;
}
}
static bool rtc_policy_slew_deliver_irq(RTCState *s)
{
apic_reset_irq_delivered();
qemu_irq_raise(s->irq);
return apic_get_irq_delivered();
}
static void rtc_coalesced_timer(void *opaque) static void rtc_coalesced_timer(void *opaque)
{ {
RTCState *s = opaque; RTCState *s = opaque;
if (s->irq_coalesced != 0) { if (s->irq_coalesced != 0) {
apic_reset_irq_delivered();
s->cmos_data[RTC_REG_C] |= 0xc0; s->cmos_data[RTC_REG_C] |= 0xc0;
DPRINTF_C("cmos: injecting from timer\n"); DPRINTF_C("cmos: injecting from timer\n");
qemu_irq_raise(s->irq); if (rtc_policy_slew_deliver_irq(s)) {
if (apic_get_irq_delivered()) {
s->irq_coalesced--; s->irq_coalesced--;
DPRINTF_C("cmos: coalesced irqs decreased to %d\n", DPRINTF_C("cmos: coalesced irqs decreased to %d\n",
s->irq_coalesced); s->irq_coalesced);
@ -144,6 +161,12 @@ static void rtc_coalesced_timer(void *opaque)
rtc_coalesced_timer_update(s); rtc_coalesced_timer_update(s);
} }
#else
static bool rtc_policy_slew_deliver_irq(RTCState *s)
{
assert(0);
return false;
}
#endif #endif
static uint32_t rtc_periodic_clock_ticks(RTCState *s) static uint32_t rtc_periodic_clock_ticks(RTCState *s)
@ -254,21 +277,17 @@ static void rtc_periodic_timer(void *opaque)
s->cmos_data[RTC_REG_C] |= REG_C_PF; s->cmos_data[RTC_REG_C] |= REG_C_PF;
if (s->cmos_data[RTC_REG_B] & REG_B_PIE) { if (s->cmos_data[RTC_REG_B] & REG_B_PIE) {
s->cmos_data[RTC_REG_C] |= REG_C_IRQF; s->cmos_data[RTC_REG_C] |= REG_C_IRQF;
#ifdef TARGET_I386
if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) { if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) {
if (s->irq_reinject_on_ack_count >= RTC_REINJECT_ON_ACK_COUNT) if (s->irq_reinject_on_ack_count >= RTC_REINJECT_ON_ACK_COUNT)
s->irq_reinject_on_ack_count = 0; s->irq_reinject_on_ack_count = 0;
apic_reset_irq_delivered(); if (!rtc_policy_slew_deliver_irq(s)) {
qemu_irq_raise(s->irq);
if (!apic_get_irq_delivered()) {
s->irq_coalesced++; s->irq_coalesced++;
rtc_coalesced_timer_update(s); rtc_coalesced_timer_update(s);
DPRINTF_C("cmos: coalesced irqs increased to %d\n", DPRINTF_C("cmos: coalesced irqs increased to %d\n",
s->irq_coalesced); s->irq_coalesced);
} }
} else } else
#endif qemu_irq_raise(s->irq);
qemu_irq_raise(s->irq);
} }
} }
@ -612,20 +631,6 @@ static void rtc_get_time(RTCState *s, struct tm *tm)
rtc_from_bcd(s, s->cmos_data[RTC_CENTURY]) * 100 - 1900; rtc_from_bcd(s, s->cmos_data[RTC_CENTURY]) * 100 - 1900;
} }
static QLIST_HEAD(, RTCState) rtc_devices =
QLIST_HEAD_INITIALIZER(rtc_devices);
#ifdef TARGET_I386
void qmp_rtc_reset_reinjection(Error **errp)
{
RTCState *s;
QLIST_FOREACH(s, &rtc_devices, link) {
s->irq_coalesced = 0;
}
}
#endif
static void rtc_set_time(RTCState *s) static void rtc_set_time(RTCState *s)
{ {
struct tm tm; struct tm tm;
@ -745,22 +750,19 @@ static uint64_t cmos_ioport_read(void *opaque, hwaddr addr,
if (ret & (REG_C_UF | REG_C_AF)) { if (ret & (REG_C_UF | REG_C_AF)) {
check_update_timer(s); check_update_timer(s);
} }
#ifdef TARGET_I386
if(s->irq_coalesced && if(s->irq_coalesced &&
(s->cmos_data[RTC_REG_B] & REG_B_PIE) && (s->cmos_data[RTC_REG_B] & REG_B_PIE) &&
s->irq_reinject_on_ack_count < RTC_REINJECT_ON_ACK_COUNT) { s->irq_reinject_on_ack_count < RTC_REINJECT_ON_ACK_COUNT) {
s->irq_reinject_on_ack_count++; s->irq_reinject_on_ack_count++;
s->cmos_data[RTC_REG_C] |= REG_C_IRQF | REG_C_PF; s->cmos_data[RTC_REG_C] |= REG_C_IRQF | REG_C_PF;
apic_reset_irq_delivered();
DPRINTF_C("cmos: injecting on ack\n"); DPRINTF_C("cmos: injecting on ack\n");
qemu_irq_raise(s->irq); if (rtc_policy_slew_deliver_irq(s)) {
if (apic_get_irq_delivered()) {
s->irq_coalesced--; s->irq_coalesced--;
DPRINTF_C("cmos: coalesced irqs decreased to %d\n", DPRINTF_C("cmos: coalesced irqs decreased to %d\n",
s->irq_coalesced); s->irq_coalesced);
} }
} }
#endif
break; break;
default: default:
ret = s->cmos_data[s->cmos_index]; ret = s->cmos_data[s->cmos_index];