1 files changed, 28 insertions, 0 deletions

diff --git a/include/asm-ia64/sn/clksupport.h b/include/asm-ia64/sn/clksupport.h
new file mode 100644
index 000000000000..d340c365a824
--- /dev/null
+++ b/include/asm-ia64/sn/clksupport.h
@@ -0,0 +1,28 @@
+/*
+ * 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) 2000-2004 Silicon Graphics, Inc. All rights reserved.
+ */
+
+/*
+ * This file contains definitions for accessing a platform supported high resolution
+ * clock. The clock is monitonically increasing and can be accessed from any node
+ * in the system. The clock is synchronized across nodes - all nodes see the
+ * same value.
+ * 
+ *      RTC_COUNTER_ADDR - contains the address of the counter 
+ *
+ */
+
+#ifndef _ASM_IA64_SN_CLKSUPPORT_H
+#define _ASM_IA64_SN_CLKSUPPORT_H
+
+extern unsigned long sn_rtc_cycles_per_second;
+
+#define RTC_COUNTER_ADDR        ((long *)LOCAL_MMR_ADDR(SH_RTC))
+
+#define rtc_time()              (*RTC_COUNTER_ADDR)
+
+#endif /* _ASM_IA64_SN_CLKSUPPORT_H */