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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/lse.h>
17
18#ifdef __KERNEL__
19
20#define __ARM64_IN_ATOMIC_IMPL
21
22#if defined(CONFIG_ARM64_LSE_ATOMICS) && defined(CONFIG_AS_LSE)
23#include <asm/atomic_lse.h>
24#else
25#include <asm/atomic_ll_sc.h>
26#endif
27
28#undef __ARM64_IN_ATOMIC_IMPL
29
30#include <asm/cmpxchg.h>
31
32#define ATOMIC_INIT(i) { (i) }
33
34#define arch_atomic_read(v) READ_ONCE((v)->counter)
35#define arch_atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
36
37#define arch_atomic_add_return_relaxed arch_atomic_add_return_relaxed
38#define arch_atomic_add_return_acquire arch_atomic_add_return_acquire
39#define arch_atomic_add_return_release arch_atomic_add_return_release
40#define arch_atomic_add_return arch_atomic_add_return
41
42#define arch_atomic_sub_return_relaxed arch_atomic_sub_return_relaxed
43#define arch_atomic_sub_return_acquire arch_atomic_sub_return_acquire
44#define arch_atomic_sub_return_release arch_atomic_sub_return_release
45#define arch_atomic_sub_return arch_atomic_sub_return
46
47#define arch_atomic_fetch_add_relaxed arch_atomic_fetch_add_relaxed
48#define arch_atomic_fetch_add_acquire arch_atomic_fetch_add_acquire
49#define arch_atomic_fetch_add_release arch_atomic_fetch_add_release
50#define arch_atomic_fetch_add arch_atomic_fetch_add
51
52#define arch_atomic_fetch_sub_relaxed arch_atomic_fetch_sub_relaxed
53#define arch_atomic_fetch_sub_acquire arch_atomic_fetch_sub_acquire
54#define arch_atomic_fetch_sub_release arch_atomic_fetch_sub_release
55#define arch_atomic_fetch_sub arch_atomic_fetch_sub
56
57#define arch_atomic_fetch_and_relaxed arch_atomic_fetch_and_relaxed
58#define arch_atomic_fetch_and_acquire arch_atomic_fetch_and_acquire
59#define arch_atomic_fetch_and_release arch_atomic_fetch_and_release
60#define arch_atomic_fetch_and arch_atomic_fetch_and
61
62#define arch_atomic_fetch_andnot_relaxed arch_atomic_fetch_andnot_relaxed
63#define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire
64#define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release
65#define arch_atomic_fetch_andnot arch_atomic_fetch_andnot
66
67#define arch_atomic_fetch_or_relaxed arch_atomic_fetch_or_relaxed
68#define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire
69#define arch_atomic_fetch_or_release arch_atomic_fetch_or_release
70#define arch_atomic_fetch_or arch_atomic_fetch_or
71
72#define arch_atomic_fetch_xor_relaxed arch_atomic_fetch_xor_relaxed
73#define arch_atomic_fetch_xor_acquire arch_atomic_fetch_xor_acquire
74#define arch_atomic_fetch_xor_release arch_atomic_fetch_xor_release
75#define arch_atomic_fetch_xor arch_atomic_fetch_xor
76
77#define arch_atomic_xchg_relaxed(v, new) \
78 arch_xchg_relaxed(&((v)->counter), (new))
79#define arch_atomic_xchg_acquire(v, new) \
80 arch_xchg_acquire(&((v)->counter), (new))
81#define arch_atomic_xchg_release(v, new) \
82 arch_xchg_release(&((v)->counter), (new))
83#define arch_atomic_xchg(v, new) \
84 arch_xchg(&((v)->counter), (new))
85
86#define arch_atomic_cmpxchg_relaxed(v, old, new) \
87 arch_cmpxchg_relaxed(&((v)->counter), (old), (new))
88#define arch_atomic_cmpxchg_acquire(v, old, new) \
89 arch_cmpxchg_acquire(&((v)->counter), (old), (new))
90#define arch_atomic_cmpxchg_release(v, old, new) \
91 arch_cmpxchg_release(&((v)->counter), (old), (new))
92#define arch_atomic_cmpxchg(v, old, new) \
93 arch_cmpxchg(&((v)->counter), (old), (new))
94
95#define arch_atomic_andnot arch_atomic_andnot
96
97/*
98 * 64-bit arch_atomic operations.
99 */
100#define ATOMIC64_INIT ATOMIC_INIT
101#define arch_atomic64_read arch_atomic_read
102#define arch_atomic64_set arch_atomic_set
103
104#define arch_atomic64_add_return_relaxed arch_atomic64_add_return_relaxed
105#define arch_atomic64_add_return_acquire arch_atomic64_add_return_acquire
106#define arch_atomic64_add_return_release arch_atomic64_add_return_release
107#define arch_atomic64_add_return arch_atomic64_add_return
108
109#define arch_atomic64_sub_return_relaxed arch_atomic64_sub_return_relaxed
110#define arch_atomic64_sub_return_acquire arch_atomic64_sub_return_acquire
111#define arch_atomic64_sub_return_release arch_atomic64_sub_return_release
112#define arch_atomic64_sub_return arch_atomic64_sub_return
113
114#define arch_atomic64_fetch_add_relaxed arch_atomic64_fetch_add_relaxed
115#define arch_atomic64_fetch_add_acquire arch_atomic64_fetch_add_acquire
116#define arch_atomic64_fetch_add_release arch_atomic64_fetch_add_release
117#define arch_atomic64_fetch_add arch_atomic64_fetch_add
118
119#define arch_atomic64_fetch_sub_relaxed arch_atomic64_fetch_sub_relaxed
120#define arch_atomic64_fetch_sub_acquire arch_atomic64_fetch_sub_acquire
121#define arch_atomic64_fetch_sub_release arch_atomic64_fetch_sub_release
122#define arch_atomic64_fetch_sub arch_atomic64_fetch_sub
123
124#define arch_atomic64_fetch_and_relaxed arch_atomic64_fetch_and_relaxed
125#define arch_atomic64_fetch_and_acquire arch_atomic64_fetch_and_acquire
126#define arch_atomic64_fetch_and_release arch_atomic64_fetch_and_release
127#define arch_atomic64_fetch_and arch_atomic64_fetch_and
128
129#define arch_atomic64_fetch_andnot_relaxed arch_atomic64_fetch_andnot_relaxed
130#define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
131#define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
132#define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
133
134#define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or_relaxed
135#define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
136#define arch_atomic64_fetch_or_release arch_atomic64_fetch_or_release
137#define arch_atomic64_fetch_or arch_atomic64_fetch_or
138
139#define arch_atomic64_fetch_xor_relaxed arch_atomic64_fetch_xor_relaxed
140#define arch_atomic64_fetch_xor_acquire arch_atomic64_fetch_xor_acquire
141#define arch_atomic64_fetch_xor_release arch_atomic64_fetch_xor_release
142#define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
143
144#define arch_atomic64_xchg_relaxed arch_atomic_xchg_relaxed
145#define arch_atomic64_xchg_acquire arch_atomic_xchg_acquire
146#define arch_atomic64_xchg_release arch_atomic_xchg_release
147#define arch_atomic64_xchg arch_atomic_xchg
148
149#define arch_atomic64_cmpxchg_relaxed arch_atomic_cmpxchg_relaxed
150#define arch_atomic64_cmpxchg_acquire arch_atomic_cmpxchg_acquire
151#define arch_atomic64_cmpxchg_release arch_atomic_cmpxchg_release
152#define arch_atomic64_cmpxchg arch_atomic_cmpxchg
153
154#define arch_atomic64_andnot arch_atomic64_andnot
155
156#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
157
158#include <asm-generic/atomic-instrumented.h>
159
160#endif
161#endif