heathrow: change heathrow_pic_init() to return the heathrow device

This enables the device to be made available during the setup of the Old World
machine. In order to pass back the previous set of IRQs we temporarily introduce
a new pic_irqs parameter until it can be removed.

An additional benefit of this change is that it is also possible to remove the
pic_mem pointer used for macio by accessing the memory region via sysbus.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 6 insertions, 4 deletions

diff --git a/hw/intc/heathrow_pic.c b/hw/intc/heathrow_pic.c
index 5fd2b33a12..393fdd7326 100644
--- a/hw/intc/heathrow_pic.c
+++ b/hw/intc/heathrow_pic.c
@@ -170,13 +170,15 @@ static void heathrow_reset(DeviceState *d)
 static void heathrow_init(Object *obj)
 {
     HeathrowState *s = HEATHROW(obj);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 
     memory_region_init_io(&s->mem, OBJECT(s), &heathrow_ops, s,
                           "heathrow-pic", 0x1000);
+    sysbus_init_mmio(sbd, &s->mem);
 }
 
-qemu_irq *heathrow_pic_init(MemoryRegion **pmem,
-                            int nb_cpus, qemu_irq **irqs)
+DeviceState *heathrow_pic_init(int nb_cpus, qemu_irq **irqs,
+                               qemu_irq **pic_irqs)
 {
     DeviceState *d;
     HeathrowState *s;
@@ -188,9 +190,9 @@ qemu_irq *heathrow_pic_init(MemoryRegion **pmem,
     /* only 1 CPU */
     s->irqs = irqs[0];
 
-    *pmem = &s->mem;
+    *pic_irqs = qemu_allocate_irqs(heathrow_set_irq, s, HEATHROW_NUM_IRQS);
 
-    return qemu_allocate_irqs(heathrow_set_irq, s, HEATHROW_NUM_IRQS);
+    return d;
 }
 
 static void heathrow_class_init(ObjectClass *oc, void *data)