diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2011-02-03 22:54:11 +0100 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2011-02-04 06:53:52 -0600 |
| commit | bc3aaac57b85ade96eeefad400ef1aff0ac73151 (patch) | |
| tree | d24957244c6e1171cf33c3a19be61e6ab63e0195 /hw/apic.c | |
| parent | 602c075070f113c69c2100776f7a67cee55dd61e (diff) | |
ioapic: Implement EOI handling for level-triggered IRQs
Add the missing EOI broadcast from local APIC to the IOAPICs on
completion of level-triggered IRQs. This ensures that a still asserted
IRQ source properly re-triggers an APIC IRQ.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit 0280b571c1a153f8926612d8c8d7359242d596f5)
Diffstat (limited to 'hw/apic.c')
| -rw-r--r-- | hw/apic.c | 9 |
1 files changed, 6 insertions, 3 deletions
@@ -18,6 +18,7 @@ */ #include "hw.h" #include "apic.h" +#include "ioapic.h" #include "qemu-timer.h" #include "host-utils.h" #include "sysbus.h" @@ -57,7 +58,8 @@ #define ESR_ILLEGAL_ADDRESS (1 << 7) -#define APIC_SV_ENABLE (1 << 8) +#define APIC_SV_DIRECTED_IO (1<<12) +#define APIC_SV_ENABLE (1<<8) #define MAX_APICS 255 #define MAX_APIC_WORDS 8 @@ -420,8 +422,9 @@ static void apic_eoi(APICState *s) if (isrv < 0) return; reset_bit(s->isr, isrv); - /* XXX: send the EOI packet to the APIC bus to allow the I/O APIC to - set the remote IRR bit for level triggered interrupts. */ + if (!(s->spurious_vec & APIC_SV_DIRECTED_IO) && get_bit(s->tmr, isrv)) { + ioapic_eoi_broadcast(isrv); + } apic_update_irq(s); } |