In some cases we have a circular dependency involving irqs - the irq
controller depends on a bus, which in turn depends on the irq controller.
Add qemu_irq_proxy() which acts as a passthrough, except that the target
irq may be set later on.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
s[1] = irq2;
return qemu_allocate_irqs(qemu_splitirq, s, 1)[0];
}
+
+static void proxy_irq_handler(void *opaque, int n, int level)
+{
+ qemu_irq **target = opaque;
+
+ if (*target) {
+ qemu_set_irq((*target)[n], level);
+ }
+}
+
+qemu_irq *qemu_irq_proxy(qemu_irq **target, int n)
+{
+ return qemu_allocate_irqs(proxy_irq_handler, target, n);
+}
/* Returns a new IRQ which feeds into both the passed IRQs */
qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2);
+/* Returns a new IRQ set which connects 1:1 to another IRQ set, which
+ * may be set later.
+ */
+qemu_irq *qemu_irq_proxy(qemu_irq **target, int n);
+
#endif