commit 309cd62d6b2628b4f0e2850b42011077f40956c7
author Michael S. Tsirkin <mst@redhat.com> Wed Jul 24 18:56:12 2013 +0300
committer Michael S. Tsirkin <mst@redhat.com> Mon Oct 14 17:48:52 2013 +0300
tree ca5152b2f6df7b7a519218f4a324751f1c51e08c
parent 6f1426ab0fad715bccbad60e976ebf420442006c

pvpanic: add API to access io port

Add API to find pvpanic device and get its io port.
Will be used to fill in guest info structure.

Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

hw/misc/pvpanic.c

diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c
index b64e3bb..226e298 100644
--- a/hw/misc/pvpanic.c
+++ b/hw/misc/pvpanic.c
@@ -117,8 +117,19 @@
     isa_create_simple(bus, TYPE_ISA_PVPANIC_DEVICE);
 }
 
+#define PVPANIC_IOPORT_PROP "ioport"
+
+uint16_t pvpanic_port(void)
+{
+    Object *o = object_resolve_path_type("", TYPE_ISA_PVPANIC_DEVICE, NULL);
+    if (!o) {
+        return 0;
+    }
+    return object_property_get_int(o, PVPANIC_IOPORT_PROP, NULL);
+}
+
 static Property pvpanic_isa_properties[] = {
-    DEFINE_PROP_UINT16("ioport", PVPanicState, ioport, 0x505),
+    DEFINE_PROP_UINT16(PVPANIC_IOPORT_PROP, PVPanicState, ioport, 0x505),
     DEFINE_PROP_END_OF_LIST(),
 };
 

include/hw/i386/pc.h

diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 95857be..e3ee0a8 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -235,6 +235,7 @@
 
 /* pvpanic.c */
 void pvpanic_init(ISABus *bus);
+uint16_t pvpanic_port(void);
 
 /* e820 types */
 #define E820_RAM        1