1/* $NetBSD: cpu_counter.h,v 1.1 2006/09/20 13:33:04 kochi Exp $ */ 2 3/*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Takayoshi Kochi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#ifndef _IA64_CPU_COUNTER_H_ 33#define _IA64_CPU_COUNTER_H_ 34 35/* 36 * Machine-specific support for CPU counter. 37 */ 38 39#ifdef _KERNEL 40 41#include <machine/ia64_cpu.h> 42 43static __inline int 44cpu_hascounter(void) 45{ 46 return 1; 47} 48 49static __inline uint64_t 50cpu_counter(void) 51{ 52 return ia64_get_itc(); 53} 54 55static __inline uint32_t 56cpu_counter32(void) 57{ 58 return (ia64_get_itc() & 0xffffffffUL); 59} 60 61static __inline uint64_t 62cpu_frequency(struct cpu_info *ci) 63{ 64 extern uint64_t itc_frequency; 65 66 return itc_frequency; 67} 68 69#endif /* _KERNEL */ 70 71#endif /* !_IA64_CPU_COUNTER_H_ */ 72