[PATCH] PCI: msi abstractions and support for altix

Abstract portions of the MSI core for platforms that do not use standard
APIC interrupt controllers.  This is implemented through a new arch-specific
msi setup routine, and a set of msi ops which can be set on a per platform
basis.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/pci/msi-altix.c b/drivers/pci/msi-altix.c
new file mode 100644
index 000000000000..9bd240602c1e
--- /dev/null
+++ b/drivers/pci/msi-altix.c
@@ -0,0 +1,18 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Silicon Graphics, Inc.  All Rights Reserved.
+ */
+
+#include <asm/errno.h>
+
+int
+sn_msi_init(void)
+{
+        /*
+         * return error until MSI is supported on altix platforms
+         */
+        return -EINVAL;
+}