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| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
|---|---|
| 2 | /* |
| 3 | * Based on arch/arm/include/asm/atomic.h |
| 4 | * |
| 5 | * Copyright (C) 1996 Russell King. |
| 6 | * Copyright (C) 2002 Deep Blue Solutions Ltd. |
| 7 | * Copyright (C) 2012 ARM Ltd. |
| 8 | */ |
| 9 | #ifndef __ASM_ATOMIC_H |
| 10 | #define __ASM_ATOMIC_H |
| 11 | |
| 12 | #include <linux/compiler.h> |
| 13 | #include <linux/types.h> |
| 14 | |
| 15 | #include <asm/barrier.h> |
| 16 | #include <asm/cmpxchg.h> |
| 17 | #include <asm/lse.h> |
| 18 | |
| 19 | #define ATOMIC_OP(op) \ |
| 20 | static __always_inline void arch_##op(int i, atomic_t *v) \ |
| 21 | { \ |
| 22 | __lse_ll_sc_body(op, i, v); \ |
| 23 | } |
| 24 | |
| 25 | ATOMIC_OP(atomic_andnot) |
| 26 | ATOMIC_OP(atomic_or) |
| 27 | ATOMIC_OP(atomic_xor) |
| 28 | ATOMIC_OP(atomic_add) |
| 29 | ATOMIC_OP(atomic_and) |
| 30 | ATOMIC_OP(atomic_sub) |
| 31 | |
| 32 | #undef ATOMIC_OP |
| 33 | |
| 34 | #define ATOMIC_FETCH_OP(name, op) \ |
| 35 | static __always_inline int arch_##op##name(int i, atomic_t *v) \ |
| 36 | { \ |
| 37 | return __lse_ll_sc_body(op##name, i, v); \ |
| 38 | } |
| 39 | |
| 40 | #define ATOMIC_FETCH_OPS(op) \ |
| 41 | ATOMIC_FETCH_OP(_relaxed, op) \ |
| 42 | ATOMIC_FETCH_OP(_acquire, op) \ |
| 43 | ATOMIC_FETCH_OP(_release, op) \ |
| 44 | ATOMIC_FETCH_OP( , op) |
| 45 | |
| 46 | ATOMIC_FETCH_OPS(atomic_fetch_andnot) |
| 47 | ATOMIC_FETCH_OPS(atomic_fetch_or) |
| 48 | ATOMIC_FETCH_OPS(atomic_fetch_xor) |
| 49 | ATOMIC_FETCH_OPS(atomic_fetch_add) |
| 50 | ATOMIC_FETCH_OPS(atomic_fetch_and) |
| 51 | ATOMIC_FETCH_OPS(atomic_fetch_sub) |
| 52 | ATOMIC_FETCH_OPS(atomic_add_return) |
| 53 | ATOMIC_FETCH_OPS(atomic_sub_return) |
| 54 | |
| 55 | #undef ATOMIC_FETCH_OP |
| 56 | #undef ATOMIC_FETCH_OPS |
| 57 | |
| 58 | #define ATOMIC64_OP(op) \ |
| 59 | static __always_inline void arch_##op(long i, atomic64_t *v) \ |
| 60 | { \ |
| 61 | __lse_ll_sc_body(op, i, v); \ |
| 62 | } |
| 63 | |
| 64 | ATOMIC64_OP(atomic64_andnot) |
| 65 | ATOMIC64_OP(atomic64_or) |
| 66 | ATOMIC64_OP(atomic64_xor) |
| 67 | ATOMIC64_OP(atomic64_add) |
| 68 | ATOMIC64_OP(atomic64_and) |
| 69 | ATOMIC64_OP(atomic64_sub) |
| 70 | |
| 71 | #undef ATOMIC64_OP |
| 72 | |
| 73 | #define ATOMIC64_FETCH_OP(name, op) \ |
| 74 | static __always_inline long arch_##op##name(long i, atomic64_t *v) \ |
| 75 | { \ |
| 76 | return __lse_ll_sc_body(op##name, i, v); \ |
| 77 | } |
| 78 | |
| 79 | #define ATOMIC64_FETCH_OPS(op) \ |
| 80 | ATOMIC64_FETCH_OP(_relaxed, op) \ |
| 81 | ATOMIC64_FETCH_OP(_acquire, op) \ |
| 82 | ATOMIC64_FETCH_OP(_release, op) \ |
| 83 | ATOMIC64_FETCH_OP( , op) |
| 84 | |
| 85 | ATOMIC64_FETCH_OPS(atomic64_fetch_andnot) |
| 86 | ATOMIC64_FETCH_OPS(atomic64_fetch_or) |
| 87 | ATOMIC64_FETCH_OPS(atomic64_fetch_xor) |
| 88 | ATOMIC64_FETCH_OPS(atomic64_fetch_add) |
| 89 | ATOMIC64_FETCH_OPS(atomic64_fetch_and) |
| 90 | ATOMIC64_FETCH_OPS(atomic64_fetch_sub) |
| 91 | ATOMIC64_FETCH_OPS(atomic64_add_return) |
| 92 | ATOMIC64_FETCH_OPS(atomic64_sub_return) |
| 93 | |
| 94 | #undef ATOMIC64_FETCH_OP |
| 95 | #undef ATOMIC64_FETCH_OPS |
| 96 | |
| 97 | static __always_inline long arch_atomic64_dec_if_positive(atomic64_t *v) |
| 98 | { |
| 99 | return __lse_ll_sc_body(atomic64_dec_if_positive, v); |
| 100 | } |
| 101 | |
| 102 | #define arch_atomic_read(v) __READ_ONCE((v)->counter) |
| 103 | #define arch_atomic_set(v, i) __WRITE_ONCE(((v)->counter), (i)) |
| 104 | |
| 105 | #define arch_atomic_add_return_relaxed arch_atomic_add_return_relaxed |
| 106 | #define arch_atomic_add_return_acquire arch_atomic_add_return_acquire |
| 107 | #define arch_atomic_add_return_release arch_atomic_add_return_release |
| 108 | #define arch_atomic_add_return arch_atomic_add_return |
| 109 | |
| 110 | #define arch_atomic_sub_return_relaxed arch_atomic_sub_return_relaxed |
| 111 | #define arch_atomic_sub_return_acquire arch_atomic_sub_return_acquire |
| 112 | #define arch_atomic_sub_return_release arch_atomic_sub_return_release |
| 113 | #define arch_atomic_sub_return arch_atomic_sub_return |
| 114 | |
| 115 | #define arch_atomic_fetch_add_relaxed arch_atomic_fetch_add_relaxed |
| 116 | #define arch_atomic_fetch_add_acquire arch_atomic_fetch_add_acquire |
| 117 | #define arch_atomic_fetch_add_release arch_atomic_fetch_add_release |
| 118 | #define arch_atomic_fetch_add arch_atomic_fetch_add |
| 119 | |
| 120 | #define arch_atomic_fetch_sub_relaxed arch_atomic_fetch_sub_relaxed |
| 121 | #define arch_atomic_fetch_sub_acquire arch_atomic_fetch_sub_acquire |
| 122 | #define arch_atomic_fetch_sub_release arch_atomic_fetch_sub_release |
| 123 | #define arch_atomic_fetch_sub arch_atomic_fetch_sub |
| 124 | |
| 125 | #define arch_atomic_fetch_and_relaxed arch_atomic_fetch_and_relaxed |
| 126 | #define arch_atomic_fetch_and_acquire arch_atomic_fetch_and_acquire |
| 127 | #define arch_atomic_fetch_and_release arch_atomic_fetch_and_release |
| 128 | #define arch_atomic_fetch_and arch_atomic_fetch_and |
| 129 | |
| 130 | #define arch_atomic_fetch_andnot_relaxed arch_atomic_fetch_andnot_relaxed |
| 131 | #define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire |
| 132 | #define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release |
| 133 | #define arch_atomic_fetch_andnot arch_atomic_fetch_andnot |
| 134 | |
| 135 | #define arch_atomic_fetch_or_relaxed arch_atomic_fetch_or_relaxed |
| 136 | #define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire |
| 137 | #define arch_atomic_fetch_or_release arch_atomic_fetch_or_release |
| 138 | #define arch_atomic_fetch_or arch_atomic_fetch_or |
| 139 | |
| 140 | #define arch_atomic_fetch_xor_relaxed arch_atomic_fetch_xor_relaxed |
| 141 | #define arch_atomic_fetch_xor_acquire arch_atomic_fetch_xor_acquire |
| 142 | #define arch_atomic_fetch_xor_release arch_atomic_fetch_xor_release |
| 143 | #define arch_atomic_fetch_xor arch_atomic_fetch_xor |
| 144 | |
| 145 | #define arch_atomic_andnot arch_atomic_andnot |
| 146 | |
| 147 | /* |
| 148 | * 64-bit arch_atomic operations. |
| 149 | */ |
| 150 | #define ATOMIC64_INIT ATOMIC_INIT |
| 151 | #define arch_atomic64_read arch_atomic_read |
| 152 | #define arch_atomic64_set arch_atomic_set |
| 153 | |
| 154 | #define arch_atomic64_add_return_relaxed arch_atomic64_add_return_relaxed |
| 155 | #define arch_atomic64_add_return_acquire arch_atomic64_add_return_acquire |
| 156 | #define arch_atomic64_add_return_release arch_atomic64_add_return_release |
| 157 | #define arch_atomic64_add_return arch_atomic64_add_return |
| 158 | |
| 159 | #define arch_atomic64_sub_return_relaxed arch_atomic64_sub_return_relaxed |
| 160 | #define arch_atomic64_sub_return_acquire arch_atomic64_sub_return_acquire |
| 161 | #define arch_atomic64_sub_return_release arch_atomic64_sub_return_release |
| 162 | #define arch_atomic64_sub_return arch_atomic64_sub_return |
| 163 | |
| 164 | #define arch_atomic64_fetch_add_relaxed arch_atomic64_fetch_add_relaxed |
| 165 | #define arch_atomic64_fetch_add_acquire arch_atomic64_fetch_add_acquire |
| 166 | #define arch_atomic64_fetch_add_release arch_atomic64_fetch_add_release |
| 167 | #define arch_atomic64_fetch_add arch_atomic64_fetch_add |
| 168 | |
| 169 | #define arch_atomic64_fetch_sub_relaxed arch_atomic64_fetch_sub_relaxed |
| 170 | #define arch_atomic64_fetch_sub_acquire arch_atomic64_fetch_sub_acquire |
| 171 | #define arch_atomic64_fetch_sub_release arch_atomic64_fetch_sub_release |
| 172 | #define arch_atomic64_fetch_sub arch_atomic64_fetch_sub |
| 173 | |
| 174 | #define arch_atomic64_fetch_and_relaxed arch_atomic64_fetch_and_relaxed |
| 175 | #define arch_atomic64_fetch_and_acquire arch_atomic64_fetch_and_acquire |
| 176 | #define arch_atomic64_fetch_and_release arch_atomic64_fetch_and_release |
| 177 | #define arch_atomic64_fetch_and arch_atomic64_fetch_and |
| 178 | |
| 179 | #define arch_atomic64_fetch_andnot_relaxed arch_atomic64_fetch_andnot_relaxed |
| 180 | #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire |
| 181 | #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release |
| 182 | #define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot |
| 183 | |
| 184 | #define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or_relaxed |
| 185 | #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire |
| 186 | #define arch_atomic64_fetch_or_release arch_atomic64_fetch_or_release |
| 187 | #define arch_atomic64_fetch_or arch_atomic64_fetch_or |
| 188 | |
| 189 | #define arch_atomic64_fetch_xor_relaxed arch_atomic64_fetch_xor_relaxed |
| 190 | #define arch_atomic64_fetch_xor_acquire arch_atomic64_fetch_xor_acquire |
| 191 | #define arch_atomic64_fetch_xor_release arch_atomic64_fetch_xor_release |
| 192 | #define arch_atomic64_fetch_xor arch_atomic64_fetch_xor |
| 193 | |
| 194 | #define arch_atomic64_andnot arch_atomic64_andnot |
| 195 | |
| 196 | #define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive |
| 197 | |
| 198 | #endif /* __ASM_ATOMIC_H */ |
| 199 |
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