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