Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
18static __always_inline int arch_atomic_read(const atomic_t *v)
19{
20 return __atomic_read(&v->counter);
21}
22#define arch_atomic_read arch_atomic_read
23
24static __always_inline void arch_atomic_set(atomic_t *v, int i)
25{
26 __atomic_set(&v->counter, i);
27}
28#define arch_atomic_set arch_atomic_set
29
30static __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
36static __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
42static __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
48static __always_inline void arch_atomic_inc(atomic_t *v)
49{
50 __atomic_add_const(1, &v->counter);
51}
52#define arch_atomic_inc arch_atomic_inc
53
54static __always_inline void arch_atomic_dec(atomic_t *v)
55{
56 __atomic_add_const(-1, &v->counter);
57}
58#define arch_atomic_dec arch_atomic_dec
59
60static __always_inline bool arch_atomic_sub_and_test(int i, atomic_t *v)
61{
62 return __atomic_add_and_test_barrier(-i, &v->counter);
63}
64#define arch_atomic_sub_and_test arch_atomic_sub_and_test
65
66static __always_inline bool arch_atomic_dec_and_test(atomic_t *v)
67{
68 return __atomic_add_const_and_test_barrier(-1, &v->counter);
69}
70#define arch_atomic_dec_and_test arch_atomic_dec_and_test
71
72static __always_inline bool arch_atomic_inc_and_test(atomic_t *v)
73{
74 return __atomic_add_const_and_test_barrier(1, &v->counter);
75}
76#define arch_atomic_inc_and_test arch_atomic_inc_and_test
77
78#define arch_atomic_sub(_i, _v) arch_atomic_add(-(int)(_i), _v)
79#define arch_atomic_sub_return(_i, _v) arch_atomic_add_return(-(int)(_i), _v)
80#define arch_atomic_fetch_sub(_i, _v) arch_atomic_fetch_add(-(int)(_i), _v)
81
82#define ATOMIC_OPS(op) \
83static __always_inline void arch_atomic_##op(int i, atomic_t *v) \
84{ \
85 __atomic_##op(i, &v->counter); \
86} \
87static __always_inline int arch_atomic_fetch_##op(int i, atomic_t *v) \
88{ \
89 return __atomic_##op##_barrier(i, &v->counter); \
90}
91
92ATOMIC_OPS(and)
93ATOMIC_OPS(or)
94ATOMIC_OPS(xor)
95
96#undef ATOMIC_OPS
97
98#define arch_atomic_and arch_atomic_and
99#define arch_atomic_or arch_atomic_or
100#define arch_atomic_xor arch_atomic_xor
101#define arch_atomic_fetch_and arch_atomic_fetch_and
102#define arch_atomic_fetch_or arch_atomic_fetch_or
103#define arch_atomic_fetch_xor arch_atomic_fetch_xor
104
105static __always_inline int arch_atomic_xchg(atomic_t *v, int new)
106{
107 return arch_xchg(&v->counter, new);
108}
109#define arch_atomic_xchg arch_atomic_xchg
110
111static __always_inline int arch_atomic_cmpxchg(atomic_t *v, int old, int new)
112{
113 return arch_cmpxchg(&v->counter, old, new);
114}
115#define arch_atomic_cmpxchg arch_atomic_cmpxchg
116
117static __always_inline bool arch_atomic_try_cmpxchg(atomic_t *v, int *old, int new)
118{
119 return arch_try_cmpxchg(&v->counter, old, new);
120}
121#define arch_atomic_try_cmpxchg arch_atomic_try_cmpxchg
122
123#define ATOMIC64_INIT(i) { (i) }
124
125static __always_inline s64 arch_atomic64_read(const atomic64_t *v)
126{
127 return __atomic64_read((long *)&v->counter);
128}
129#define arch_atomic64_read arch_atomic64_read
130
131static __always_inline void arch_atomic64_set(atomic64_t *v, s64 i)
132{
133 __atomic64_set((long *)&v->counter, i);
134}
135#define arch_atomic64_set arch_atomic64_set
136
137static __always_inline s64 arch_atomic64_add_return(s64 i, atomic64_t *v)
138{
139 return __atomic64_add_barrier(i, (long *)&v->counter) + i;
140}
141#define arch_atomic64_add_return arch_atomic64_add_return
142
143static __always_inline s64 arch_atomic64_fetch_add(s64 i, atomic64_t *v)
144{
145 return __atomic64_add_barrier(i, (long *)&v->counter);
146}
147#define arch_atomic64_fetch_add arch_atomic64_fetch_add
148
149static __always_inline void arch_atomic64_add(s64 i, atomic64_t *v)
150{
151 __atomic64_add(i, (long *)&v->counter);
152}
153#define arch_atomic64_add arch_atomic64_add
154
155static __always_inline void arch_atomic64_inc(atomic64_t *v)
156{
157 __atomic64_add_const(1, (long *)&v->counter);
158}
159#define arch_atomic64_inc arch_atomic64_inc
160
161static __always_inline void arch_atomic64_dec(atomic64_t *v)
162{
163 __atomic64_add_const(-1, (long *)&v->counter);
164}
165#define arch_atomic64_dec arch_atomic64_dec
166
167static __always_inline bool arch_atomic64_sub_and_test(s64 i, atomic64_t *v)
168{
169 return __atomic64_add_and_test_barrier(-i, (long *)&v->counter);
170}
171#define arch_atomic64_sub_and_test arch_atomic64_sub_and_test
172
173static __always_inline bool arch_atomic64_dec_and_test(atomic64_t *v)
174{
175 return __atomic64_add_const_and_test_barrier(-1, (long *)&v->counter);
176}
177#define arch_atomic64_dec_and_test arch_atomic64_dec_and_test
178
179static __always_inline bool arch_atomic64_inc_and_test(atomic64_t *v)
180{
181 return __atomic64_add_const_and_test_barrier(1, (long *)&v->counter);
182}
183#define arch_atomic64_inc_and_test arch_atomic64_inc_and_test
184
185static __always_inline s64 arch_atomic64_xchg(atomic64_t *v, s64 new)
186{
187 return arch_xchg(&v->counter, new);
188}
189#define arch_atomic64_xchg arch_atomic64_xchg
190
191static __always_inline s64 arch_atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new)
192{
193 return arch_cmpxchg(&v->counter, old, new);
194}
195#define arch_atomic64_cmpxchg arch_atomic64_cmpxchg
196
197static __always_inline bool arch_atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
198{
199 return arch_try_cmpxchg(&v->counter, old, new);
200}
201#define arch_atomic64_try_cmpxchg arch_atomic64_try_cmpxchg
202
203#define ATOMIC64_OPS(op) \
204static __always_inline void arch_atomic64_##op(s64 i, atomic64_t *v) \
205{ \
206 __atomic64_##op(i, (long *)&v->counter); \
207} \
208static __always_inline long arch_atomic64_fetch_##op(s64 i, atomic64_t *v) \
209{ \
210 return __atomic64_##op##_barrier(i, (long *)&v->counter); \
211}
212
213ATOMIC64_OPS(and)
214ATOMIC64_OPS(or)
215ATOMIC64_OPS(xor)
216
217#undef ATOMIC64_OPS
218
219#define arch_atomic64_and arch_atomic64_and
220#define arch_atomic64_or arch_atomic64_or
221#define arch_atomic64_xor arch_atomic64_xor
222#define arch_atomic64_fetch_and arch_atomic64_fetch_and
223#define arch_atomic64_fetch_or arch_atomic64_fetch_or
224#define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
225
226#define arch_atomic64_sub_return(_i, _v) arch_atomic64_add_return(-(s64)(_i), _v)
227#define arch_atomic64_fetch_sub(_i, _v) arch_atomic64_fetch_add(-(s64)(_i), _v)
228#define arch_atomic64_sub(_i, _v) arch_atomic64_add(-(s64)(_i), _v)
229
230#endif /* __ARCH_S390_ATOMIC__ */