mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

hw/timer: Revert "hpet: inverse polarity when pin above ISA_NUM_IRQS"

Browse Source 
This reverts commit 0d63b2dd31464cfccc80bbeedc24e3863fe4c895.

This change was originally intended to correct the HPET behavior
in conjunction with Linux, however the behavior that it actually creates
is not compatible with the ioapic.c implementation; it used to be
compatible with KVM's own IOAPIC but it is not anymore.

Signed-off-by: Bill Paul <wpaul@windriver.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <201604051558.20070.wpaul@windriver.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Bill Paul 2016-04-05 15:58:19 -07:00 committed by Paolo Bonzini
parent 089adafdc6
commit ecba19935a
1 changed files with 2 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
hw/timer/hpet.c
View File

@ -201,12 +201,7 @@ static void update_irq(struct HPETTimer *timer, int set)
if (!set || !timer_enabled(timer) || !hpet_enabled(timer->state)) {
s->isr &= ~mask;
if (!timer_fsb_route(timer)) {
/* fold the ICH PIRQ# pin's internal inversion logic into hpet */
if (route >= ISA_NUM_IRQS) {
qemu_irq_raise(s->irqs[route]);
} else {
qemu_irq_lower(s->irqs[route]);
}
qemu_irq_lower(s->irqs[route]);
}
} else if (timer_fsb_route(timer)) {
address_space_stl_le(&address_space_memory, timer->fsb >> 32,
@ -214,12 +209,7 @@ static void update_irq(struct HPETTimer *timer, int set)
NULL);
} else if (timer->config & HPET_TN_TYPE_LEVEL) {
s->isr |= mask;
/* fold the ICH PIRQ# pin's internal inversion logic into hpet */
if (route >= ISA_NUM_IRQS) {
qemu_irq_lower(s->irqs[route]);
} else {
qemu_irq_raise(s->irqs[route]);
}
qemu_irq_raise(s->irqs[route]);
} else {
s->isr &= ~mask;
qemu_irq_pulse(s->irqs[route]);