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