1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2000-2004 Silicon Graphics, Inc. All rights reserved. 7 */ 8 9/* 10 * This file contains definitions for accessing a platform supported high resolution 11 * clock. The clock is monitonically increasing and can be accessed from any node 12 * in the system. The clock is synchronized across nodes - all nodes see the 13 * same value. 14 * 15 * RTC_COUNTER_ADDR - contains the address of the counter 16 * 17 */ 18 19#ifndef _ASM_IA64_SN_CLKSUPPORT_H 20#define _ASM_IA64_SN_CLKSUPPORT_H 21 22extern unsigned long sn_rtc_cycles_per_second; 23 24#define RTC_COUNTER_ADDR ((long *)LOCAL_MMR_ADDR(SH_RTC)) 25 26#define rtc_time() (*RTC_COUNTER_ADDR) 27 28#endif /* _ASM_IA64_SN_CLKSUPPORT_H */ 29