1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Based on arch/arm/include/asm/atomic.h
5 * Copyright (C) 1996 Russell King.
6 * Copyright (C) 2002 Deep Blue Solutions Ltd.
7 * Copyright (C) 2012 ARM Ltd.
10 #define __ASM_ATOMIC_H
12 #include <linux/compiler.h>
13 #include <linux/types.h>
15 #include <asm/barrier.h>
16 #include <asm/cmpxchg.h>
19 #define ATOMIC_OP(op) \
20 static __always_inline void arch_##op(int i, atomic_t *v) \
22 __lse_ll_sc_body(op, i, v); \
25 ATOMIC_OP(atomic_andnot)
34 #define ATOMIC_FETCH_OP(name, op) \
35 static __always_inline int arch_##op##name(int i, atomic_t *v) \
37 return __lse_ll_sc_body(op##name, i, v); \
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)
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)
55 #undef ATOMIC_FETCH_OP
56 #undef ATOMIC_FETCH_OPS
58 #define ATOMIC64_OP(op) \
59 static __always_inline void arch_##op(long i, atomic64_t *v) \
61 __lse_ll_sc_body(op, i, v); \
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)
73 #define ATOMIC64_FETCH_OP(name, op) \
74 static __always_inline long arch_##op##name(long i, atomic64_t *v) \
76 return __lse_ll_sc_body(op##name, i, v); \
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)
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)
94 #undef ATOMIC64_FETCH_OP
95 #undef ATOMIC64_FETCH_OPS
97 static __always_inline long arch_atomic64_dec_if_positive(atomic64_t *v)
99 return __lse_ll_sc_body(atomic64_dec_if_positive, v);
102 #define ATOMIC_INIT(i) { (i) }
104 #define arch_atomic_read(v) READ_ONCE((v)->counter)
105 #define arch_atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
107 #define arch_atomic_add_return_relaxed arch_atomic_add_return_relaxed
108 #define arch_atomic_add_return_acquire arch_atomic_add_return_acquire
109 #define arch_atomic_add_return_release arch_atomic_add_return_release
110 #define arch_atomic_add_return arch_atomic_add_return
112 #define arch_atomic_sub_return_relaxed arch_atomic_sub_return_relaxed
113 #define arch_atomic_sub_return_acquire arch_atomic_sub_return_acquire
114 #define arch_atomic_sub_return_release arch_atomic_sub_return_release
115 #define arch_atomic_sub_return arch_atomic_sub_return
117 #define arch_atomic_fetch_add_relaxed arch_atomic_fetch_add_relaxed
118 #define arch_atomic_fetch_add_acquire arch_atomic_fetch_add_acquire
119 #define arch_atomic_fetch_add_release arch_atomic_fetch_add_release
120 #define arch_atomic_fetch_add arch_atomic_fetch_add
122 #define arch_atomic_fetch_sub_relaxed arch_atomic_fetch_sub_relaxed
123 #define arch_atomic_fetch_sub_acquire arch_atomic_fetch_sub_acquire
124 #define arch_atomic_fetch_sub_release arch_atomic_fetch_sub_release
125 #define arch_atomic_fetch_sub arch_atomic_fetch_sub
127 #define arch_atomic_fetch_and_relaxed arch_atomic_fetch_and_relaxed
128 #define arch_atomic_fetch_and_acquire arch_atomic_fetch_and_acquire
129 #define arch_atomic_fetch_and_release arch_atomic_fetch_and_release
130 #define arch_atomic_fetch_and arch_atomic_fetch_and
132 #define arch_atomic_fetch_andnot_relaxed arch_atomic_fetch_andnot_relaxed
133 #define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire
134 #define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release
135 #define arch_atomic_fetch_andnot arch_atomic_fetch_andnot
137 #define arch_atomic_fetch_or_relaxed arch_atomic_fetch_or_relaxed
138 #define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire
139 #define arch_atomic_fetch_or_release arch_atomic_fetch_or_release
140 #define arch_atomic_fetch_or arch_atomic_fetch_or
142 #define arch_atomic_fetch_xor_relaxed arch_atomic_fetch_xor_relaxed
143 #define arch_atomic_fetch_xor_acquire arch_atomic_fetch_xor_acquire
144 #define arch_atomic_fetch_xor_release arch_atomic_fetch_xor_release
145 #define arch_atomic_fetch_xor arch_atomic_fetch_xor
147 #define arch_atomic_xchg_relaxed(v, new) \
148 arch_xchg_relaxed(&((v)->counter), (new))
149 #define arch_atomic_xchg_acquire(v, new) \
150 arch_xchg_acquire(&((v)->counter), (new))
151 #define arch_atomic_xchg_release(v, new) \
152 arch_xchg_release(&((v)->counter), (new))
153 #define arch_atomic_xchg(v, new) \
154 arch_xchg(&((v)->counter), (new))
156 #define arch_atomic_cmpxchg_relaxed(v, old, new) \
157 arch_cmpxchg_relaxed(&((v)->counter), (old), (new))
158 #define arch_atomic_cmpxchg_acquire(v, old, new) \
159 arch_cmpxchg_acquire(&((v)->counter), (old), (new))
160 #define arch_atomic_cmpxchg_release(v, old, new) \
161 arch_cmpxchg_release(&((v)->counter), (old), (new))
162 #define arch_atomic_cmpxchg(v, old, new) \
163 arch_cmpxchg(&((v)->counter), (old), (new))
165 #define arch_atomic_andnot arch_atomic_andnot
168 * 64-bit arch_atomic operations.
170 #define ATOMIC64_INIT ATOMIC_INIT
171 #define arch_atomic64_read arch_atomic_read
172 #define arch_atomic64_set arch_atomic_set
174 #define arch_atomic64_add_return_relaxed arch_atomic64_add_return_relaxed
175 #define arch_atomic64_add_return_acquire arch_atomic64_add_return_acquire
176 #define arch_atomic64_add_return_release arch_atomic64_add_return_release
177 #define arch_atomic64_add_return arch_atomic64_add_return
179 #define arch_atomic64_sub_return_relaxed arch_atomic64_sub_return_relaxed
180 #define arch_atomic64_sub_return_acquire arch_atomic64_sub_return_acquire
181 #define arch_atomic64_sub_return_release arch_atomic64_sub_return_release
182 #define arch_atomic64_sub_return arch_atomic64_sub_return
184 #define arch_atomic64_fetch_add_relaxed arch_atomic64_fetch_add_relaxed
185 #define arch_atomic64_fetch_add_acquire arch_atomic64_fetch_add_acquire
186 #define arch_atomic64_fetch_add_release arch_atomic64_fetch_add_release
187 #define arch_atomic64_fetch_add arch_atomic64_fetch_add
189 #define arch_atomic64_fetch_sub_relaxed arch_atomic64_fetch_sub_relaxed
190 #define arch_atomic64_fetch_sub_acquire arch_atomic64_fetch_sub_acquire
191 #define arch_atomic64_fetch_sub_release arch_atomic64_fetch_sub_release
192 #define arch_atomic64_fetch_sub arch_atomic64_fetch_sub
194 #define arch_atomic64_fetch_and_relaxed arch_atomic64_fetch_and_relaxed
195 #define arch_atomic64_fetch_and_acquire arch_atomic64_fetch_and_acquire
196 #define arch_atomic64_fetch_and_release arch_atomic64_fetch_and_release
197 #define arch_atomic64_fetch_and arch_atomic64_fetch_and
199 #define arch_atomic64_fetch_andnot_relaxed arch_atomic64_fetch_andnot_relaxed
200 #define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
201 #define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
202 #define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
204 #define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or_relaxed
205 #define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
206 #define arch_atomic64_fetch_or_release arch_atomic64_fetch_or_release
207 #define arch_atomic64_fetch_or arch_atomic64_fetch_or
209 #define arch_atomic64_fetch_xor_relaxed arch_atomic64_fetch_xor_relaxed
210 #define arch_atomic64_fetch_xor_acquire arch_atomic64_fetch_xor_acquire
211 #define arch_atomic64_fetch_xor_release arch_atomic64_fetch_xor_release
212 #define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
214 #define arch_atomic64_xchg_relaxed arch_atomic_xchg_relaxed
215 #define arch_atomic64_xchg_acquire arch_atomic_xchg_acquire
216 #define arch_atomic64_xchg_release arch_atomic_xchg_release
217 #define arch_atomic64_xchg arch_atomic_xchg
219 #define arch_atomic64_cmpxchg_relaxed arch_atomic_cmpxchg_relaxed
220 #define arch_atomic64_cmpxchg_acquire arch_atomic_cmpxchg_acquire
221 #define arch_atomic64_cmpxchg_release arch_atomic_cmpxchg_release
222 #define arch_atomic64_cmpxchg arch_atomic_cmpxchg
224 #define arch_atomic64_andnot arch_atomic64_andnot
226 #define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
228 #include <asm-generic/atomic-instrumented.h>
230 #endif /* __ASM_ATOMIC_H */