| /* $NetBSD: cpu_counter.h,v 1.1 2006/09/20 13:33:04 kochi Exp $ */ | |
| /*- | |
| * Copyright (c) 2006 The NetBSD Foundation, Inc. | |
| * All rights reserved. | |
| * | |
| * This code is derived from software contributed to The NetBSD Foundation | |
| * by Takayoshi Kochi. | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions | |
| * are met: | |
| * 1. Redistributions of source code must retain the above copyright | |
| * notice, this list of conditions and the following disclaimer. | |
| * 2. Redistributions in binary form must reproduce the above copyright | |
| * notice, this list of conditions and the following disclaimer in the | |
| * documentation and/or other materials provided with the distribution. | |
| * 3. All advertising materials mentioning features or use of this software | |
| * must display the following acknowledgement: | |
| * This product includes software developed by the NetBSD | |
| * Foundation, Inc. and its contributors. | |
| * 4. Neither the name of The NetBSD Foundation nor the names of its | |
| * contributors may be used to endorse or promote products derived | |
| * from this software without specific prior written permission. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | |
| * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
| * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| * POSSIBILITY OF SUCH DAMAGE. | |
| */ | |
| #ifndef _IA64_CPU_COUNTER_H_ | |
| #define _IA64_CPU_COUNTER_H_ | |
| /* | |
| * Machine-specific support for CPU counter. | |
| */ | |
| #ifdef _KERNEL | |
| #include <machine/ia64_cpu.h> | |
| static __inline int | |
| cpu_hascounter(void) | |
| { | |
| return 1; | |
| } | |
| static __inline uint64_t | |
| cpu_counter(void) | |
| { | |
| return ia64_get_itc(); | |
| } | |
| static __inline uint32_t | |
| cpu_counter32(void) | |
| { | |
| return (ia64_get_itc() & 0xffffffffUL); | |
| } | |
| static __inline uint64_t | |
| cpu_frequency(struct cpu_info *ci) | |
| { | |
| extern uint64_t itc_frequency; | |
| return itc_frequency; | |
| } | |
| #endif /* _KERNEL */ | |
| #endif /* !_IA64_CPU_COUNTER_H_ */ |