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
 27static inline long atomic_long_read(atomic_long_t *l)
 28{
 29	atomic64_t *v = (atomic64_t *)l;
 30
 31	return (long)atomic64_read(v);
 32}
 33
 34static inline void atomic_long_set(atomic_long_t *l, long i)
 35{
 36	atomic64_t *v = (atomic64_t *)l;
 37
 38	atomic64_set(v, i);
 39}
 40
 41static inline void atomic_long_inc(atomic_long_t *l)
 42{
 43	atomic64_t *v = (atomic64_t *)l;
 44
 45	atomic64_inc(v);
 46}
 47
 48static inline void atomic_long_dec(atomic_long_t *l)
 49{
 50	atomic64_t *v = (atomic64_t *)l;
 51
 52	atomic64_dec(v);
 53}
 54
 55static inline void atomic_long_add(long i, atomic_long_t *l)
 56{
 57	atomic64_t *v = (atomic64_t *)l;
 58
 59	atomic64_add(i, v);
 60}
 61
 62static inline void atomic_long_sub(long i, atomic_long_t *l)
 63{
 64	atomic64_t *v = (atomic64_t *)l;
 65
 66	atomic64_sub(i, v);
 67}
 68
 69static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
 70{
 71	atomic64_t *v = (atomic64_t *)l;
 72
 73	return atomic64_sub_and_test(i, v);
 74}
 75
 76static inline int atomic_long_dec_and_test(atomic_long_t *l)
 77{
 78	atomic64_t *v = (atomic64_t *)l;
 79
 80	return atomic64_dec_and_test(v);
 81}
 82
 83static inline int atomic_long_inc_and_test(atomic_long_t *l)
 84{
 85	atomic64_t *v = (atomic64_t *)l;
 86
 87	return atomic64_inc_and_test(v);
 88}
 89
 90static inline int atomic_long_add_negative(long i, atomic_long_t *l)
 91{
 92	atomic64_t *v = (atomic64_t *)l;
 93
 94	return atomic64_add_negative(i, v);
 95}
 96
 97static inline long atomic_long_add_return(long i, atomic_long_t *l)
 98{
 99	atomic64_t *v = (atomic64_t *)l;
100
101	return (long)atomic64_add_return(i, v);
102}
103
104static inline long atomic_long_sub_return(long i, atomic_long_t *l)
105{
106	atomic64_t *v = (atomic64_t *)l;
107
108	return (long)atomic64_sub_return(i, v);
109}
110
111static inline long atomic_long_inc_return(atomic_long_t *l)
112{
113	atomic64_t *v = (atomic64_t *)l;
114
115	return (long)atomic64_inc_return(v);
116}
117
118static inline long atomic_long_dec_return(atomic_long_t *l)
119{
120	atomic64_t *v = (atomic64_t *)l;
121
122	return (long)atomic64_dec_return(v);
123}
124
125static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
126{
127	atomic64_t *v = (atomic64_t *)l;
128
129	return (long)atomic64_add_unless(v, a, u);
130}
131
132#define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l))
133
134#define atomic_long_cmpxchg(l, old, new) \
135	(atomic64_cmpxchg((atomic64_t *)(l), (old), (new)))
136#define atomic_long_xchg(v, new) \
137	(atomic64_xchg((atomic64_t *)(v), (new)))
138
139#else  /*  BITS_PER_LONG == 64  */
140
141typedef atomic_t atomic_long_t;
142
143#define ATOMIC_LONG_INIT(i)	ATOMIC_INIT(i)
144static inline long atomic_long_read(atomic_long_t *l)
145{
146	atomic_t *v = (atomic_t *)l;
147
148	return (long)atomic_read(v);
149}
150
151static inline void atomic_long_set(atomic_long_t *l, long i)
152{
153	atomic_t *v = (atomic_t *)l;
154
155	atomic_set(v, i);
156}
157
158static inline void atomic_long_inc(atomic_long_t *l)
159{
160	atomic_t *v = (atomic_t *)l;
161
162	atomic_inc(v);
163}
164
165static inline void atomic_long_dec(atomic_long_t *l)
166{
167	atomic_t *v = (atomic_t *)l;
168
169	atomic_dec(v);
170}
171
172static inline void atomic_long_add(long i, atomic_long_t *l)
173{
174	atomic_t *v = (atomic_t *)l;
175
176	atomic_add(i, v);
177}
178
179static inline void atomic_long_sub(long i, atomic_long_t *l)
180{
181	atomic_t *v = (atomic_t *)l;
182
183	atomic_sub(i, v);
184}
185
186static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
187{
188	atomic_t *v = (atomic_t *)l;
189
190	return atomic_sub_and_test(i, v);
191}
192
193static inline int atomic_long_dec_and_test(atomic_long_t *l)
194{
195	atomic_t *v = (atomic_t *)l;
196
197	return atomic_dec_and_test(v);
198}
199
200static inline int atomic_long_inc_and_test(atomic_long_t *l)
201{
202	atomic_t *v = (atomic_t *)l;
203
204	return atomic_inc_and_test(v);
205}
206
207static inline int atomic_long_add_negative(long i, atomic_long_t *l)
208{
209	atomic_t *v = (atomic_t *)l;
210
211	return atomic_add_negative(i, v);
212}
213
214static inline long atomic_long_add_return(long i, atomic_long_t *l)
215{
216	atomic_t *v = (atomic_t *)l;
217
218	return (long)atomic_add_return(i, v);
219}
220
221static inline long atomic_long_sub_return(long i, atomic_long_t *l)
222{
223	atomic_t *v = (atomic_t *)l;
224
225	return (long)atomic_sub_return(i, v);
226}
227
228static inline long atomic_long_inc_return(atomic_long_t *l)
229{
230	atomic_t *v = (atomic_t *)l;
231
232	return (long)atomic_inc_return(v);
233}
234
235static inline long atomic_long_dec_return(atomic_long_t *l)
236{
237	atomic_t *v = (atomic_t *)l;
238
239	return (long)atomic_dec_return(v);
240}
241
242static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
243{
244	atomic_t *v = (atomic_t *)l;
245
246	return (long)atomic_add_unless(v, a, u);
247}
248
249#define atomic_long_inc_not_zero(l) atomic_inc_not_zero((atomic_t *)(l))
250
251#define atomic_long_cmpxchg(l, old, new) \
252	(atomic_cmpxchg((atomic_t *)(l), (old), (new)))
253#define atomic_long_xchg(v, new) \
254	(atomic_xchg((atomic_t *)(v), (new)))
255
256#endif  /*  BITS_PER_LONG == 64  */
257
258#endif  /*  _ASM_GENERIC_ATOMIC_LONG_H  */