From ac10027327e27c9b360452e01af3ef2147f5a26f Mon Sep 17 00:00:00 2001
From: Julien Grall <julien.grall@citrix.com>
Date: Wed, 19 Sep 2012 12:50:02 +0100
Subject: isa: Add isa_address_space_io()
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This function permits to retrieve ISA IO address space.
It will be usefull when we need to pass IO address space as argument.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/isa-bus.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'hw/isa-bus.c')

diff --git a/hw/isa-bus.c b/hw/isa-bus.c
index 685fdc0..144a88e 100644
--- a/hw/isa-bus.c
+++ b/hw/isa-bus.c
@@ -264,4 +264,13 @@ MemoryRegion *isa_address_space(ISADevice *dev)
     return get_system_memory();
 }
 
+MemoryRegion *isa_address_space_io(ISADevice *dev)
+{
+    if (dev) {
+        return isa_bus_from_device(dev)->address_space_io;
+    }
+
+    return isabus->address_space_io;
+}
+
 type_init(isabus_register_types)
-- 
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