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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _IA64_CPU_COUNTER_H_ 40 #define _IA64_CPU_COUNTER_H_ 41 42 /* 43 * Machine-specific support for CPU counter. 44 */ 45 46 #ifdef _KERNEL 47 48 #include <machine/ia64_cpu.h> 49 50 static __inline int 51 cpu_hascounter(void) 52 { 53 return 1; 54 } 55 56 static __inline uint64_t 57 cpu_counter(void) 58 { 59 return ia64_get_itc(); 60 } 61 62 static __inline uint32_t 63 cpu_counter32(void) 64 { 65 return (ia64_get_itc() & 0xffffffffUL); 66 } 67 68 static __inline uint64_t 69 cpu_frequency(struct cpu_info *ci) 70 { 71 extern uint64_t itc_frequency; 72 73 return itc_frequency; 74 } 75 76 #endif /* _KERNEL */ 77 78 #endif /* !_IA64_CPU_COUNTER_H_ */ 79
