cpu_counter.h revision 1.1.4.2
1 1.1.4.2 tls /* $NetBSD: cpu_counter.h,v 1.1.4.2 2014/08/20 00:02:39 tls Exp $ */ 2 1.1.4.2 tls 3 1.1.4.2 tls /*- 4 1.1.4.2 tls * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 1.1.4.2 tls * All rights reserved. 6 1.1.4.2 tls * 7 1.1.4.2 tls * This code is derived from software contributed to The NetBSD Foundation 8 1.1.4.2 tls * by Matt Thomas of 3am Software Foundry. 9 1.1.4.2 tls * 10 1.1.4.2 tls * Redistribution and use in source and binary forms, with or without 11 1.1.4.2 tls * modification, are permitted provided that the following conditions 12 1.1.4.2 tls * are met: 13 1.1.4.2 tls * 1. Redistributions of source code must retain the above copyright 14 1.1.4.2 tls * notice, this list of conditions and the following disclaimer. 15 1.1.4.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.4.2 tls * notice, this list of conditions and the following disclaimer in the 17 1.1.4.2 tls * documentation and/or other materials provided with the distribution. 18 1.1.4.2 tls * 19 1.1.4.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.4.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.4.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.4.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.4.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.4.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.4.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.4.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.4.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.4.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.4.2 tls * POSSIBILITY OF SUCH DAMAGE. 30 1.1.4.2 tls */ 31 1.1.4.2 tls 32 1.1.4.2 tls #ifndef _AARCH64_CPU_COUNTER_H_ 33 1.1.4.2 tls #define _AARCH64_CPU_COUNTER_H_ 34 1.1.4.2 tls 35 1.1.4.2 tls /* 36 1.1.4.2 tls * AArch64 specific support for CPU counter. 37 1.1.4.2 tls */ 38 1.1.4.2 tls 39 1.1.4.2 tls #ifdef _KERNEL 40 1.1.4.2 tls 41 1.1.4.2 tls #ifdef __aarch64__ 42 1.1.4.2 tls 43 1.1.4.2 tls #include <sys/cpu.h> 44 1.1.4.2 tls #include <aarch64/armreg.h> 45 1.1.4.2 tls 46 1.1.4.2 tls #define cpu_hascounter() (curcpu()->ci_data.cpu_cc_freq != 0) 47 1.1.4.2 tls #define cpu_counter() cpu_counter32() 48 1.1.4.2 tls 49 1.1.4.2 tls static __inline uint32_t 50 1.1.4.2 tls cpu_counter32(void) 51 1.1.4.2 tls { 52 1.1.4.2 tls return reg_pmccntr_el0_read(); 53 1.1.4.2 tls } 54 1.1.4.2 tls 55 1.1.4.2 tls static __inline uint64_t 56 1.1.4.2 tls cpu_frequency(struct cpu_info *ci) 57 1.1.4.2 tls { 58 1.1.4.2 tls return ci->ci_data.cpu_cc_freq; 59 1.1.4.2 tls } 60 1.1.4.2 tls 61 1.1.4.2 tls #endif /* _KERNEL */ 62 1.1.4.2 tls 63 1.1.4.2 tls #elif defined(__arm__) 64 1.1.4.2 tls 65 1.1.4.2 tls #include <arm/cpu_counter.h> 66 1.1.4.2 tls 67 1.1.4.2 tls #endif 68 1.1.4.2 tls 69 1.1.4.2 tls #endif /* _AARCH64_CPU_COUNTER_H_ */ 70
Indexes created Wed Oct 29 09:09:48 GMT 2025