diff options
Diffstat (limited to 'i386/i386at/ioapic.c')
| -rw-r--r-- | i386/i386at/ioapic.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/i386/i386at/ioapic.c b/i386/i386at/ioapic.c index abeab3ab..a6c0fd6a 100644 --- a/i386/i386at/ioapic.c +++ b/i386/i386at/ioapic.c @@ -290,6 +290,17 @@ ioapic_toggle(int pin, int mask) ioapic_toggle_entry(apic, pin, mask); } +#if 0 +static int +lapic_tmr_bit(uint8_t vec) +{ + int i; + + i = (vec & ~0x1f) >> 5; + return lapic->tmr[i].r & (1 << (vec & 0x1f)); +} +#endif + void ioapic_irq_eoi(int pin) { @@ -303,6 +314,7 @@ ioapic_irq_eoi(int pin) spl_t s = simple_lock_irq(&ioapic_lock); if (!has_irq_specific_eoi) { + // XXX Linux conditions on TMR bit: if (!lapic_tmr_bit(entry.both.vector)) { /* Workaround for old IOAPICs with no specific EOI */ /* Mask the pin and change to edge triggered */ @@ -314,9 +326,9 @@ ioapic_irq_eoi(int pin) /* Restore level entry */ ioapic_write_entry(apic, pin, oldentry.both); + //} } else { volatile ApicIoUnit *ioapic = apic_get_ioapic(apic)->ioapic; - ioapic_read_entry(apic, pin, &entry.both); ioapic->eoi.r = entry.both.vector; } |