1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright IBM Corp. 1999, 2016
4 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
5 * Denis Joseph Barrow,
6 * Arnd Bergmann,
7 */
8
9 #ifndef __ARCH_S390_ATOMIC__
10 #define __ARCH_S390_ATOMIC__
11
12 #include <linux/compiler.h>
13 #include <linux/types.h>
14 #include <asm/atomic_ops.h>
15 #include <asm/barrier.h>
16 #include <asm/cmpxchg.h>
17
18 static __always_inline int arch_atomic_read(const atomic_t *v)
19 {
20 return __atomic_read(v);
21 }
22 #define arch_atomic_read arch_atomic_read
23
24 static __always_inline void arch_atomic_set(atomic_t *v, int i)
25 {
26 __atomic_set(v, i);
27 }
28 #define arch_atomic_set arch_atomic_set
29
30 static __always_inline int arch_atomic_add_return(int i, atomic_t *v)
31 {
32 return __atomic_add_barrier(i, &v->counter) + i;
33 }
34 #define arch_atomic_add_return arch_atomic_add_return
35
36 static __always_inline int arch_atomic_fetch_add(int i, atomic_t *v)
37 {
38 return __atomic_add_barrier(i, &v->counter);
39 }
40 #define arch_atomic_fetch_add arch_atomic_fetch_add
41
42 static __always_inline void arch_atomic_add(int i, atomic_t *v)
43 {
44 __atomic_add(i, &v->counter);
45 }
46 #define arch_atomic_add arch_atomic_add
47
48 #define arch_atomic_sub(_i, _v) arch_atomic_add(-(int)(_i), _v)
49 #define arch_atomic_sub_return(_i, _v) arch_atomic_add_return(-(int)(_i), _v)
50 #define arch_atomic_fetch_sub(_i, _v) arch_atomic_fetch_add(-(int)(_i), _v)
51
52 #define ATOMIC_OPS(op) \
53 static __always_inline void arch_atomic_##op(int i, atomic_t *v) \
54 { \
55 __atomic_##op(i, &v->counter); \
56 } \
57 static __always_inline int arch_atomic_fetch_##op(int i, atomic_t *v) \
58 { \
59 return __atomic_##op##_barrier(i, &v->counter); \
60 }
61
62 ATOMIC_OPS(and)
63 ATOMIC_OPS(or)
64 ATOMIC_OPS(xor)
65
66 #undef ATOMIC_OPS
67
68 #define arch_atomic_and arch_atomic_and
69 #define arch_atomic_or arch_atomic_or
70 #define arch_atomic_xor arch_atomic_xor
71 #define arch_atomic_fetch_and arch_atomic_fetch_and
72 #define arch_atomic_fetch_or arch_atomic_fetch_or
73 #define arch_atomic_fetch_xor arch_atomic_fetch_xor
74
75 #define arch_atomic_xchg(v, new) (arch_xchg(&((v)->counter), new))
76
77 static __always_inline int arch_atomic_cmpxchg(atomic_t *v, int old, int new)
78 {
79 return __atomic_cmpxchg(&v->counter, old, new);
80 }
81 #define arch_atomic_cmpxchg arch_atomic_cmpxchg
82
83 #define ATOMIC64_INIT(i) { (i) }
84
85 static __always_inline s64 arch_atomic64_read(const atomic64_t *v)
86 {
87 return __atomic64_read(v);
88 }
89 #define arch_atomic64_read arch_atomic64_read
90
91 static __always_inline void arch_atomic64_set(atomic64_t *v, s64 i)
92 {
93 __atomic64_set(v, i);
94 }
95 #define arch_atomic64_set arch_atomic64_set
96
97 static __always_inline s64 arch_atomic64_add_return(s64 i, atomic64_t *v)
98 {
99 return __atomic64_add_barrier(i, (long *)&v->counter) + i;
100 }
101 #define arch_atomic64_add_return arch_atomic64_add_return
102
103 static __always_inline s64 arch_atomic64_fetch_add(s64 i, atomic64_t *v)
104 {
105 return __atomic64_add_barrier(i, (long *)&v->counter);
106 }
107 #define arch_atomic64_fetch_add arch_atomic64_fetch_add
108
109 static __always_inline void arch_atomic64_add(s64 i, atomic64_t *v)
110 {
111 __atomic64_add(i, (long *)&v->counter);
112 }
113 #define arch_atomic64_add arch_atomic64_add
114
115 #define arch_atomic64_xchg(v, new) (arch_xchg(&((v)->counter), new))
116
117 static __always_inline s64 arch_atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new)
118 {
119 return __atomic64_cmpxchg((long *)&v->counter, old, new);
120 }
121 #define arch_atomic64_cmpxchg arch_atomic64_cmpxchg
122
123 #define ATOMIC64_OPS(op) \
124 static __always_inline void arch_atomic64_##op(s64 i, atomic64_t *v) \
125 { \
126 __atomic64_##op(i, (long *)&v->counter); \
127 } \
128 static __always_inline long arch_atomic64_fetch_##op(s64 i, atomic64_t *v) \
129 { \
130 return __atomic64_##op##_barrier(i, (long *)&v->counter); \
131 }
132
133 ATOMIC64_OPS(and)
134 ATOMIC64_OPS(or)
135 ATOMIC64_OPS(xor)
136
137 #undef ATOMIC64_OPS
138
139 #define arch_atomic64_and arch_atomic64_and
140 #define arch_atomic64_or arch_atomic64_or
141 #define arch_atomic64_xor arch_atomic64_xor
142 #define arch_atomic64_fetch_and arch_atomic64_fetch_and
143 #define arch_atomic64_fetch_or arch_atomic64_fetch_or
144 #define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
145
146 #define arch_atomic64_sub_return(_i, _v) arch_atomic64_add_return(-(s64)(_i), _v)
147 #define arch_atomic64_fetch_sub(_i, _v) arch_atomic64_fetch_add(-(s64)(_i), _v)
148 #define arch_atomic64_sub(_i, _v) arch_atomic64_add(-(s64)(_i), _v)
149
150 #endif /* __ARCH_S390_ATOMIC__ */
151
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