From 9c11a8ac886ccbb5f8e1b08e8ae12f045d783031 Mon Sep 17 00:00:00 2001
From: Anthony PERARD <anthony.perard@citrix.com>
Date: Wed, 30 Jun 2010 17:50:10 +0100
Subject: xen: Introduce Xen Interrupt Controller

Every set_irq call makes a Xen hypercall.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
 xen-all.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'xen-all.c')

diff --git a/xen-all.c b/xen-all.c
index acb051c..bb809ef 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -40,6 +40,18 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
     }
 }
 
+/* Xen Interrupt Controller */
+
+static void xen_set_irq(void *opaque, int irq, int level)
+{
+    xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level);
+}
+
+qemu_irq *xen_interrupt_controller_init(void)
+{
+    return qemu_allocate_irqs(xen_set_irq, NULL, 16);
+}
+
 /* VCPU Operations, MMIO, IO ring ... */
 
 static void xen_reset_vcpu(void *opaque)
-- 
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