1 /* 2 * Based on arch/arm/include/asm/atomic.h 3 * 4 * Copyright (C) 1996 Russell King. 5 * Copyright (C) 2002 Deep Blue Solutions Ltd. 6 * Copyright (C) 2012 ARM Ltd. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 #ifndef __ASM_ATOMIC_H 21 #define __ASM_ATOMIC_H 22 23 #include <linux/compiler.h> 24 #include <linux/types.h> 25 26 #include <asm/barrier.h> 27 #include <asm/lse.h> 28 29 #ifdef __KERNEL__ 30 31 #define __ARM64_IN_ATOMIC_IMPL 32 33 #if defined(CONFIG_ARM64_LSE_ATOMICS) && defined(CONFIG_AS_LSE) 34 #include <asm/atomic_lse.h> 35 #else 36 #include <asm/atomic_ll_sc.h> 37 #endif 38 39 #undef __ARM64_IN_ATOMIC_IMPL 40 41 #include <asm/cmpxchg.h> 42 43 #define ATOMIC_INIT(i) { (i) } 44 45 #define arch_atomic_read(v) READ_ONCE((v)->counter) 46 #define arch_atomic_set(v, i) WRITE_ONCE(((v)->counter), (i)) 47 48 #define arch_atomic_add_return_relaxed arch_atomic_add_return_relaxed 49 #define arch_atomic_add_return_acquire arch_atomic_add_return_acquire 50 #define arch_atomic_add_return_release arch_atomic_add_return_release 51 #define arch_atomic_add_return arch_atomic_add_return 52 53 #define arch_atomic_sub_return_relaxed arch_atomic_sub_return_relaxed 54 #define arch_atomic_sub_return_acquire arch_atomic_sub_return_acquire 55 #define arch_atomic_sub_return_release arch_atomic_sub_return_release 56 #define arch_atomic_sub_return arch_atomic_sub_return 57 58 #define arch_atomic_fetch_add_relaxed arch_atomic_fetch_add_relaxed 59 #define arch_atomic_fetch_add_acquire arch_atomic_fetch_add_acquire 60 #define arch_atomic_fetch_add_release arch_atomic_fetch_add_release 61 #define arch_atomic_fetch_add arch_atomic_fetch_add 62 63 #define arch_atomic_fetch_sub_relaxed arch_atomic_fetch_sub_relaxed 64 #define arch_atomic_fetch_sub_acquire arch_atomic_fetch_sub_acquire 65 #define arch_atomic_fetch_sub_release arch_atomic_fetch_sub_release 66 #define arch_atomic_fetch_sub arch_atomic_fetch_sub 67 68 #define arch_atomic_fetch_and_relaxed arch_atomic_fetch_and_relaxed 69 #define arch_atomic_fetch_and_acquire arch_atomic_fetch_and_acquire 70 #define arch_atomic_fetch_and_release arch_atomic_fetch_and_release 71 #define arch_atomic_fetch_and arch_atomic_fetch_and 72 73 #define arch_atomic_fetch_andnot_relaxed arch_atomic_fetch_andnot_relaxed 74 #define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire 75 #define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release 76 #define arch_atomic_fetch_andnot arch_atomic_fetch_andnot 77 78 #define arch_atomic_fetch_or_relaxed arch_atomic_fetch_or_relaxed 79 #define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire 80 #define arch_atomic_fetch_or_release arch_atomic_fetch_or_release 81 #define arch_atomic_fetch_or arch_atomic_fetch_or 82 83 #define arch_atomic_fetch_xor_relaxed arch_atomic_fetch_xor_relaxed 84 #define arch_atomic_fetch_xor_acquire arch_atomic_fetch_xor_acquire 85 #define arch_atomic_fetch_xor_release arch_atomic_fetch_xor_release 86 #define arch_atomic_fetch_xor arch_atomic_fetch_xor 87 88 #define arch_atomic_xchg_relaxed(v, new) \ 89 arch_xchg_relaxed(&((v)->counter), (new)) 90 #define arch_atomic_xchg_acquire(v, new) \ 91 arch_xchg_acquire(&((v)->counter), (new)) 92 #define arch_atomic_xchg_release(v, new) \ 93 arch_xchg_release(&((v)->counter), (new)) 94 #define arch_atomic_xchg(v, new) \ 95 arch_xchg(&((v)->counter), (new)) 96 97 #define arch_atomic_cmpxchg_relaxed(v, old, new) \ 98 arch_cmpxchg_relaxed(&((v)->counter), (old), (new)) 99 #define arch_atomic_cmpxchg_acquire(v, old, new) \ 100 arch_cmpxchg_acquire(&((v)->counter), (old), (new)) 101 #define arch_atomic_cmpxchg_release(v, old, new) \ 102 arch_cmpxchg_release(&((v)->counter), (old), (new)) 103 #define arch_atomic_cmpxchg(v, old, new) \ 104 arch_cmpxchg(&((v)->counter), (old), (new)) 105 106 #define arch_atomic_andnot arch_atomic_andnot 107 108 /* 109 * 64-bit arch_atomic operations. 110 */ 111 #define ATOMIC64_INIT ATOMIC_INIT 112 #define arch_atomic64_read arch_atomic_read 113 #define arch_atomic64_set arch_atomic_set 114 115 #define arch_atomic64_add_return_relaxed arch_atomic64_add_return_relaxed 116 #define arch_atomic64_add_return_acquire arch_atomic64_add_return_acquire 117 #define arch_atomic64_add_return_release arch_atomic64_add_return_release 118 #define arch_atomic64_add_return arch_atomic64_add_return 119 120 #define arch_atomic64_sub_return_relaxed arch_atomic64_sub_return_relaxed 121 #define arch_atomic64_sub_return_acquire arch_atomic64_sub_return_acquire 122 #define arch_atomic64_sub_return_release arch_atomic64_sub_return_release 123 #define arch_atomic64_sub_return arch_atomic64_sub_return 124 125 #define arch_atomic64_fetch_add_relaxed arch_atomic64_fetch_add_relaxed 126 #define arch_atomic64_fetch_add_acquire arch_atomic64_fetch_add_acquire 127 #define arch_atomic64_fetch_add_release arch_atomic64_fetch_add_release 128 #define arch_atomic64_fetch_add arch_atomic64_fetch_add 129 130 #define arch_atomic64_fetch_sub_relaxed arch_atomic64_fetch_sub_relaxed 131 #define arch_atomic64_fetch_sub_acquire arch_atomic64_fetch_sub_acquire 132 #define arch_atomic64_fetch_sub_release arch_atomic64_fetch_sub_release 133 #define arch_atomic64_fetch_sub arch_atomic64_fetch_sub 134 135 #define arch_atomic64_fetch_and_relaxed arch_atomic64_fetch_and_relaxed 136 #define arch_atomic64_fetch_and_acquire arch_atomic64_fetch_and_acquire 137 #define arch_atomic64_fetch_and_release arch_atomic64_fetch_and_release 138 #define arch_atomic64_fetch_and arch_atomic64_fetch_and 139 140 #define arch_atomic64_fetch_andnot_relaxed arch_atomic64_fetch_andnot_relaxed 141 #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire 142 #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release 143 #define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot 144 145 #define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or_relaxed 146 #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire 147 #define arch_atomic64_fetch_or_release arch_atomic64_fetch_or_release 148 #define arch_atomic64_fetch_or arch_atomic64_fetch_or 149 150 #define arch_atomic64_fetch_xor_relaxed arch_atomic64_fetch_xor_relaxed 151 #define arch_atomic64_fetch_xor_acquire arch_atomic64_fetch_xor_acquire 152 #define arch_atomic64_fetch_xor_release arch_atomic64_fetch_xor_release 153 #define arch_atomic64_fetch_xor arch_atomic64_fetch_xor 154 155 #define arch_atomic64_xchg_relaxed arch_atomic_xchg_relaxed 156 #define arch_atomic64_xchg_acquire arch_atomic_xchg_acquire 157 #define arch_atomic64_xchg_release arch_atomic_xchg_release 158 #define arch_atomic64_xchg arch_atomic_xchg 159 160 #define arch_atomic64_cmpxchg_relaxed arch_atomic_cmpxchg_relaxed 161 #define arch_atomic64_cmpxchg_acquire arch_atomic_cmpxchg_acquire 162 #define arch_atomic64_cmpxchg_release arch_atomic_cmpxchg_release 163 #define arch_atomic64_cmpxchg arch_atomic_cmpxchg 164 165 #define arch_atomic64_andnot arch_atomic64_andnot 166 167 #define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive 168 169 #include <asm-generic/atomic-instrumented.h> 170 171 #endif 172 #endif 173