Route IOAPIC interrupts via ISA bus

Instead of calling the IOAPIC from the PIC, raise IOAPIC irqs via the ISA bus.
As a side effect, IOAPIC lines 16-23 are enabled.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 8 insertions, 8 deletions

diff --git a/hw/pc.c b/hw/pc.c
index 902d0cae8..1a1f5a914 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -61,7 +61,6 @@
 static fdctrl_t *floppy_controller;
 static RTCState *rtc_state;
 static PITState *pit;
-static IOAPICState *ioapic;
 static PCIDevice *i440fx_state;
 
 typedef struct rom_reset_data {
@@ -90,14 +89,18 @@ static void option_rom_setup_reset(target_phys_addr_t addr, unsigned size)
 
 typedef struct isa_irq_state {
     qemu_irq *i8259;
+    qemu_irq *ioapic;
 } IsaIrqState;
 
 static void isa_irq_handler(void *opaque, int n, int level)
 {
     IsaIrqState *isa = (IsaIrqState *)opaque;
 
-    qemu_set_irq(isa->i8259[n], level);
-}
+    if (n < 16) {
+        qemu_set_irq(isa->i8259[n], level);
+    }
+    qemu_set_irq(isa->ioapic[n], level);
+};
 
 static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
 {
@@ -1282,7 +1285,7 @@ static void pc_init1(ram_addr_t ram_size,
     i8259 = i8259_init(cpu_irq[0]);
     isa_irq_state = qemu_mallocz(sizeof(*isa_irq_state));
     isa_irq_state->i8259 = i8259;
-    isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 16);
+    isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24);
     ferr_irq = isa_irq[13];
 
     if (pci_enabled) {
@@ -1324,16 +1327,13 @@ static void pc_init1(ram_addr_t ram_size,
     register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
 
     if (pci_enabled) {
-        ioapic = ioapic_init();
+        isa_irq_state->ioapic = ioapic_init();
     }
     pit = pit_init(0x40, isa_irq[0]);
     pcspk_init(pit);
     if (!no_hpet) {
         hpet_init(isa_irq);
     }
-    if (pci_enabled) {
-        pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
-    }
 
     for(i = 0; i < MAX_SERIAL_PORTS; i++) {
         if (serial_hds[i]) {