[PATCH] SGI IOC4: Detect IO card variant

There are three different IO cards which an SGI IOC4 controller may find
itself on.  One of these variants does not bring out the IDE and serial
signals, so we need to disable attaching the corresponding IOC4 subdrivers
to such cards.

Cleans up message clutter emitted during device probing.

Signed-off-by: Brent Casavant <bcasavan@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/ioc4.h b/include/linux/ioc4.h
index 3dd18b785ebd..de73a3289cc2 100644
--- a/include/linux/ioc4.h
+++ b/include/linux/ioc4.h
@@ -147,6 +147,10 @@ struct ioc4_misc_regs {
 #define IOC4_GPCR_EDGE_6 0x40
 #define IOC4_GPCR_EDGE_7 0x80
 
+#define IOC4_VARIANT_IO9        0x0900
+#define IOC4_VARIANT_PCI_RT     0x0901
+#define IOC4_VARIANT_IO10       0x1000
+
 /* One of these per IOC4 */
 struct ioc4_driver_data {
         struct list_head idd_list;
@@ -156,6 +160,7 @@ struct ioc4_driver_data {
         struct __iomem ioc4_misc_regs *idd_misc_regs;
         unsigned long count_period;
         void *idd_serial_data;
+        unsigned int idd_variant;
 };
 
 /* One per submodule */