1249268Sglebius/*- 2249268Sglebius * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org> 3249268Sglebius * All rights reserved. 4249268Sglebius * 5249268Sglebius * Redistribution and use in source and binary forms, with or without 6249268Sglebius * modification, are permitted provided that the following conditions 7249268Sglebius * are met: 8249268Sglebius * 1. Redistributions of source code must retain the above copyright 9249268Sglebius * notice, this list of conditions and the following disclaimer. 10249268Sglebius * 2. Redistributions in binary form must reproduce the above copyright 11249268Sglebius * notice, this list of conditions and the following disclaimer in the 12249268Sglebius * documentation and/or other materials provided with the distribution. 13249268Sglebius * 14249268Sglebius * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15249268Sglebius * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16249268Sglebius * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17249268Sglebius * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18249268Sglebius * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19249268Sglebius * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20249268Sglebius * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21249268Sglebius * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22249268Sglebius * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23249268Sglebius * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24249268Sglebius * SUCH DAMAGE. 25249268Sglebius * 26249268Sglebius * $FreeBSD: stable/11/sys/arm/include/counter.h 328386 2018-01-25 02:45:21Z pkelsey $ 27249268Sglebius */ 28249268Sglebius 29249268Sglebius#ifndef __MACHINE_COUNTER_H__ 30249268Sglebius#define __MACHINE_COUNTER_H__ 31249268Sglebius 32249268Sglebius#include <sys/pcpu.h> 33269406Sian#include <machine/atomic.h> 34249268Sglebius 35313989Skib#define counter_enter() do {} while (0) 36313989Skib#define counter_exit() do {} while (0) 37249268Sglebius 38252434Skib#ifdef IN_SUBR_COUNTER_C 39269406Sian 40252434Skibstatic inline uint64_t 41252434Skibcounter_u64_read_one(uint64_t *p, int cpu) 42252434Skib{ 43252434Skib 44269406Sian return (atomic_load_64((uint64_t *)((char *)p + sizeof(struct pcpu) * 45269406Sian cpu))); 46252434Skib} 47252434Skib 48252434Skibstatic inline uint64_t 49252434Skibcounter_u64_fetch_inline(uint64_t *p) 50252434Skib{ 51252434Skib uint64_t r; 52252434Skib int i; 53252434Skib 54252434Skib r = 0; 55313989Skib CPU_FOREACH(i) 56252434Skib r += counter_u64_read_one((uint64_t *)p, i); 57252434Skib 58252434Skib return (r); 59252434Skib} 60252434Skib 61252434Skibstatic void 62252434Skibcounter_u64_zero_one_cpu(void *arg) 63252434Skib{ 64252434Skib 65269406Sian atomic_store_64((uint64_t *)((char *)arg + sizeof(struct pcpu) * 66269406Sian PCPU_GET(cpuid)), 0); 67252434Skib} 68252434Skib 69252434Skibstatic inline void 70252434Skibcounter_u64_zero_inline(counter_u64_t c) 71252434Skib{ 72252434Skib 73328386Spkelsey smp_rendezvous(smp_no_rendezvous_barrier, counter_u64_zero_one_cpu, 74328386Spkelsey smp_no_rendezvous_barrier, c); 75252434Skib} 76252434Skib#endif 77252434Skib 78313989Skib#define counter_u64_add_protected(c, inc) counter_u64_add(c, inc) 79249268Sglebius 80249268Sglebiusstatic inline void 81249268Sglebiuscounter_u64_add(counter_u64_t c, int64_t inc) 82249268Sglebius{ 83249268Sglebius 84313989Skib atomic_add_64((uint64_t *)zpcpu_get(c), inc); 85249268Sglebius} 86249268Sglebius 87249268Sglebius#endif /* ! __MACHINE_COUNTER_H__ */ 88