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 
arch_atomic_read(const atomic_t * v)18 static 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 
arch_atomic_set(atomic_t * v,int i)24 static 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 
arch_atomic_add_return(int i,atomic_t * v)30 static 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 
arch_atomic_fetch_add(int i,atomic_t * v)36 static 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 
arch_atomic_add(int i,atomic_t * v)42 static 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 inline void arch_atomic_##op(int i, atomic_t *v)			\
54 {									\
55 	__atomic_##op(i, &v->counter);					\
56 }									\
57 static 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)
ATOMIC_OPS(or)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 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 
arch_atomic64_read(const atomic64_t * v)85 static 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 
arch_atomic64_set(atomic64_t * v,s64 i)91 static 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 
arch_atomic64_add_return(s64 i,atomic64_t * v)97 static 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 
arch_atomic64_fetch_add(s64 i,atomic64_t * v)103 static 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 
arch_atomic64_add(s64 i,atomic64_t * v)109 static 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 
arch_atomic64_cmpxchg(atomic64_t * v,s64 old,s64 new)117 static 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 inline void arch_atomic64_##op(s64 i, atomic64_t *v)		\
125 {									\
126 	__atomic64_##op(i, (long *)&v->counter);			\
127 }									\
128 static 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