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 
23 typedef atomic64_t atomic_long_t;
24 
25 #define ATOMIC_LONG_INIT(i)	ATOMIC64_INIT(i)
26 
27 static 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 
34 static 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 
41 static inline void atomic_long_inc(atomic_long_t *l)
42 {
43 	atomic64_t *v = (atomic64_t *)l;
44 
45 	atomic64_inc(v);
46 }
47 
48 static inline void atomic_long_dec(atomic_long_t *l)
49 {
50 	atomic64_t *v = (atomic64_t *)l;
51 
52 	atomic64_dec(v);
53 }
54 
55 static 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 
62 static 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 
69 static 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 
76 static 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 
83 static 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 
90 static 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 
97 static 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 
104 static 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 
111 static 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 
118 static 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 
125 static 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 
141 typedef atomic_t atomic_long_t;
142 
143 #define ATOMIC_LONG_INIT(i)	ATOMIC_INIT(i)
144 static 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 
151 static 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 
158 static inline void atomic_long_inc(atomic_long_t *l)
159 {
160 	atomic_t *v = (atomic_t *)l;
161 
162 	atomic_inc(v);
163 }
164 
165 static inline void atomic_long_dec(atomic_long_t *l)
166 {
167 	atomic_t *v = (atomic_t *)l;
168 
169 	atomic_dec(v);
170 }
171 
172 static 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 
179 static 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 
186 #ifndef __UBOOT__
187 static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
188 {
189 	atomic_t *v = (atomic_t *)l;
190 
191 	return atomic_sub_and_test(i, v);
192 }
193 
194 static inline int atomic_long_dec_and_test(atomic_long_t *l)
195 {
196 	atomic_t *v = (atomic_t *)l;
197 
198 	return atomic_dec_and_test(v);
199 }
200 
201 static inline int atomic_long_inc_and_test(atomic_long_t *l)
202 {
203 	atomic_t *v = (atomic_t *)l;
204 
205 	return atomic_inc_and_test(v);
206 }
207 
208 static inline int atomic_long_add_negative(long i, atomic_long_t *l)
209 {
210 	atomic_t *v = (atomic_t *)l;
211 
212 	return atomic_add_negative(i, v);
213 }
214 
215 static inline long atomic_long_add_return(long i, atomic_long_t *l)
216 {
217 	atomic_t *v = (atomic_t *)l;
218 
219 	return (long)atomic_add_return(i, v);
220 }
221 
222 static inline long atomic_long_sub_return(long i, atomic_long_t *l)
223 {
224 	atomic_t *v = (atomic_t *)l;
225 
226 	return (long)atomic_sub_return(i, v);
227 }
228 
229 static inline long atomic_long_inc_return(atomic_long_t *l)
230 {
231 	atomic_t *v = (atomic_t *)l;
232 
233 	return (long)atomic_inc_return(v);
234 }
235 
236 static inline long atomic_long_dec_return(atomic_long_t *l)
237 {
238 	atomic_t *v = (atomic_t *)l;
239 
240 	return (long)atomic_dec_return(v);
241 }
242 
243 static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
244 {
245 	atomic_t *v = (atomic_t *)l;
246 
247 	return (long)atomic_add_unless(v, a, u);
248 }
249 
250 #define atomic_long_inc_not_zero(l) atomic_inc_not_zero((atomic_t *)(l))
251 
252 #define atomic_long_cmpxchg(l, old, new) \
253 	(atomic_cmpxchg((atomic_t *)(l), (old), (new)))
254 #define atomic_long_xchg(v, new) \
255 	(atomic_xchg((atomic_t *)(v), (new)))
256 #endif  /*  __UBOOT__ */
257 
258 #endif  /*  BITS_PER_LONG == 64  */
259 
260 #endif  /*  _ASM_GENERIC_ATOMIC_LONG_H  */
261