Christoph Lameter | d3cb487 | 2006-01-06 00:11:20 -0800 | [diff] [blame] | 1 | #ifndef _ASM_GENERIC_ATOMIC_H |
| 2 | #define _ASM_GENERIC_ATOMIC_H |
| 3 | /* |
| 4 | * Copyright (C) 2005 Silicon Graphics, Inc. |
Christoph Lameter | cde5353 | 2008-07-04 09:59:22 -0700 | [diff] [blame] | 5 | * Christoph Lameter |
Christoph Lameter | d3cb487 | 2006-01-06 00:11:20 -0800 | [diff] [blame] | 6 | * |
| 7 | * Allows to provide arch independent atomic definitions without the need to |
| 8 | * edit all arch specific atomic.h files. |
| 9 | */ |
| 10 | |
Andrew Morton | 5998bf1 | 2006-01-08 01:00:29 -0800 | [diff] [blame] | 11 | #include <asm/types.h> |
Christoph Lameter | d3cb487 | 2006-01-06 00:11:20 -0800 | [diff] [blame] | 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 | |
Kyle McMartin | 6b4977c | 2006-01-15 12:10:55 -0500 | [diff] [blame] | 38 | atomic64_set(v, i); |
Christoph Lameter | d3cb487 | 2006-01-06 00:11:20 -0800 | [diff] [blame] | 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 | |
Mathieu Desnoyers | bb2382c | 2007-05-08 00:34:19 -0700 | [diff] [blame] | 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 | |
Mathieu Desnoyers | 2856f5e | 2007-05-08 00:34:38 -0700 | [diff] [blame] | 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 | } |
Mathieu Desnoyers | bb2382c | 2007-05-08 00:34:19 -0700 | [diff] [blame] | 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 | (atomic_cmpxchg((atomic64_t *)(l), (old), (new))) |
| 136 | #define atomic_long_xchg(v, new) \ |
| 137 | (atomic_xchg((atomic64_t *)(l), (new))) |
| 138 | |
Adrian Bunk | 4b358e2 | 2006-12-06 20:40:28 -0800 | [diff] [blame] | 139 | #else /* BITS_PER_LONG == 64 */ |
Christoph Lameter | d3cb487 | 2006-01-06 00:11:20 -0800 | [diff] [blame] | 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 | |
Mathieu Desnoyers | bb2382c | 2007-05-08 00:34:19 -0700 | [diff] [blame] | 186 | static 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 | |
| 193 | static 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 | |
| 200 | static 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 | |
| 207 | static 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 | |
| 214 | static 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 | |
| 221 | static 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 | |
| 228 | static 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 | |
| 235 | static 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 | |
Mathieu Desnoyers | 2856f5e | 2007-05-08 00:34:38 -0700 | [diff] [blame] | 242 | static 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 | } |
Mathieu Desnoyers | bb2382c | 2007-05-08 00:34:19 -0700 | [diff] [blame] | 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 *)(l), (new))) |
| 255 | |
Adrian Bunk | 4b358e2 | 2006-12-06 20:40:28 -0800 | [diff] [blame] | 256 | #endif /* BITS_PER_LONG == 64 */ |
| 257 | |
| 258 | #endif /* _ASM_GENERIC_ATOMIC_H */ |