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1#ifndef _ASM_GENERIC_ATOMIC_LONG_H
2#define _ASM_GENERIC_ATOMIC_LONG_H
3/*
4 * Copyright (C) 2005 Silicon Graphics, Inc.
5 * Christoph Lameter
6 *
7 * Allows to provide arch independent atomic definitions without the need to
8 * edit all arch specific atomic.h files.
9 */
10
11#include <asm/types.h>
12
13/*
14 * Suppport for atomic_long_t
15 *
16 * Casts for parameters are avoided for existing atomic functions in order to
17 * avoid issues with cast-as-lval under gcc 4.x and other limitations that the
18 * macros of a platform may have.
19 */
20
21#if BITS_PER_LONG == 64
22
23typedef atomic64_t atomic_long_t;
24
25#define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i)
26#define ATOMIC_LONG_PFX(x) atomic64 ## x
27
28#else
29
30typedef atomic_t atomic_long_t;
31
32#define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
33#define ATOMIC_LONG_PFX(x) atomic ## x
34
35#endif
36
37#define ATOMIC_LONG_READ_OP(mo) \
38static inline long atomic_long_read##mo(const atomic_long_t *l) \
39{ \
40 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
41 \
42 return (long)ATOMIC_LONG_PFX(_read##mo)(v); \
43}
44ATOMIC_LONG_READ_OP()
45ATOMIC_LONG_READ_OP(_acquire)
46
47#undef ATOMIC_LONG_READ_OP
48
49#define ATOMIC_LONG_SET_OP(mo) \
50static inline void atomic_long_set##mo(atomic_long_t *l, long i) \
51{ \
52 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
53 \
54 ATOMIC_LONG_PFX(_set##mo)(v, i); \
55}
56ATOMIC_LONG_SET_OP()
57ATOMIC_LONG_SET_OP(_release)
58
59#undef ATOMIC_LONG_SET_OP
60
61#define ATOMIC_LONG_ADD_SUB_OP(op, mo) \
62static inline long \
63atomic_long_##op##_return##mo(long i, atomic_long_t *l) \
64{ \
65 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
66 \
67 return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(i, v); \
68}
69ATOMIC_LONG_ADD_SUB_OP(add,)
70ATOMIC_LONG_ADD_SUB_OP(add, _relaxed)
71ATOMIC_LONG_ADD_SUB_OP(add, _acquire)
72ATOMIC_LONG_ADD_SUB_OP(add, _release)
73ATOMIC_LONG_ADD_SUB_OP(sub,)
74ATOMIC_LONG_ADD_SUB_OP(sub, _relaxed)
75ATOMIC_LONG_ADD_SUB_OP(sub, _acquire)
76ATOMIC_LONG_ADD_SUB_OP(sub, _release)
77
78#undef ATOMIC_LONG_ADD_SUB_OP
79
80#define atomic_long_cmpxchg_relaxed(l, old, new) \
81 (ATOMIC_LONG_PFX(_cmpxchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(l), \
82 (old), (new)))
83#define atomic_long_cmpxchg_acquire(l, old, new) \
84 (ATOMIC_LONG_PFX(_cmpxchg_acquire)((ATOMIC_LONG_PFX(_t) *)(l), \
85 (old), (new)))
86#define atomic_long_cmpxchg_release(l, old, new) \
87 (ATOMIC_LONG_PFX(_cmpxchg_release)((ATOMIC_LONG_PFX(_t) *)(l), \
88 (old), (new)))
89#define atomic_long_cmpxchg(l, old, new) \
90 (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new)))
91
92#define atomic_long_xchg_relaxed(v, new) \
93 (ATOMIC_LONG_PFX(_xchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
94#define atomic_long_xchg_acquire(v, new) \
95 (ATOMIC_LONG_PFX(_xchg_acquire)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
96#define atomic_long_xchg_release(v, new) \
97 (ATOMIC_LONG_PFX(_xchg_release)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
98#define atomic_long_xchg(v, new) \
99 (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
100
101static __always_inline void atomic_long_inc(atomic_long_t *l)
102{
103 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
104
105 ATOMIC_LONG_PFX(_inc)(v);
106}
107
108static __always_inline void atomic_long_dec(atomic_long_t *l)
109{
110 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
111
112 ATOMIC_LONG_PFX(_dec)(v);
113}
114
115#define ATOMIC_LONG_OP(op) \
116static __always_inline void \
117atomic_long_##op(long i, atomic_long_t *l) \
118{ \
119 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
120 \
121 ATOMIC_LONG_PFX(_##op)(i, v); \
122}
123
124ATOMIC_LONG_OP(add)
125ATOMIC_LONG_OP(sub)
126ATOMIC_LONG_OP(and)
127ATOMIC_LONG_OP(or)
128ATOMIC_LONG_OP(xor)
129ATOMIC_LONG_OP(andnot)
130
131#undef ATOMIC_LONG_OP
132
133static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
134{
135 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
136
137 return ATOMIC_LONG_PFX(_sub_and_test)(i, v);
138}
139
140static inline int atomic_long_dec_and_test(atomic_long_t *l)
141{
142 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
143
144 return ATOMIC_LONG_PFX(_dec_and_test)(v);
145}
146
147static inline int atomic_long_inc_and_test(atomic_long_t *l)
148{
149 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
150
151 return ATOMIC_LONG_PFX(_inc_and_test)(v);
152}
153
154static inline int atomic_long_add_negative(long i, atomic_long_t *l)
155{
156 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
157
158 return ATOMIC_LONG_PFX(_add_negative)(i, v);
159}
160
161#define ATOMIC_LONG_INC_DEC_OP(op, mo) \
162static inline long \
163atomic_long_##op##_return##mo(atomic_long_t *l) \
164{ \
165 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
166 \
167 return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(v); \
168}
169ATOMIC_LONG_INC_DEC_OP(inc,)
170ATOMIC_LONG_INC_DEC_OP(inc, _relaxed)
171ATOMIC_LONG_INC_DEC_OP(inc, _acquire)
172ATOMIC_LONG_INC_DEC_OP(inc, _release)
173ATOMIC_LONG_INC_DEC_OP(dec,)
174ATOMIC_LONG_INC_DEC_OP(dec, _relaxed)
175ATOMIC_LONG_INC_DEC_OP(dec, _acquire)
176ATOMIC_LONG_INC_DEC_OP(dec, _release)
177
178#undef ATOMIC_LONG_INC_DEC_OP
179
180static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
181{
182 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
183
184 return (long)ATOMIC_LONG_PFX(_add_unless)(v, a, u);
185}
186
187#define atomic_long_inc_not_zero(l) \
188 ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l))
189
190#endif /* _ASM_GENERIC_ATOMIC_LONG_H */