include/asm-generic/atomic-long.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_GENERIC_ATOMIC_LONG_H
   3 #define _ASM_GENERIC_ATOMIC_LONG_H
   4 /*
   5  * Copyright (C) 2005 Silicon Graphics, Inc.
   6  *      Christoph Lameter
   7  *
   8  * Allows to provide arch independent atomic definitions without the need to
   9  * edit all arch specific atomic.h files.
  10  */
  11
  12 #include <asm/types.h>
  13
  14 /*
  15  * Suppport for atomic_long_t
  16  *
  17  * Casts for parameters are avoided for existing atomic functions in order to
  18  * avoid issues with cast-as-lval under gcc 4.x and other limitations that the
  19  * macros of a platform may have.
  20  */
  21
  22 #if BITS_PER_LONG == 64
  23
  24 typedef atomic64_t atomic_long_t;
  25
  26 #define ATOMIC_LONG_INIT(i)     ATOMIC64_INIT(i)
  27 #define ATOMIC_LONG_PFX(x)      atomic64 ## x
  28
  29 #else
  30
  31 typedef atomic_t atomic_long_t;
  32
  33 #define ATOMIC_LONG_INIT(i)     ATOMIC_INIT(i)
  34 #define ATOMIC_LONG_PFX(x)      atomic ## x
  35
  36 #endif
  37
  38 #define ATOMIC_LONG_READ_OP(mo)                                         \
  39 static inline long atomic_long_read##mo(const atomic_long_t *l)         \
  40 {                                                                       \
  41         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;              \
  42                                                                         \
  43         return (long)ATOMIC_LONG_PFX(_read##mo)(v);                     \
  44 }
  45 ATOMIC_LONG_READ_OP()
  46 ATOMIC_LONG_READ_OP(_acquire)
  47
  48 #undef ATOMIC_LONG_READ_OP
  49
  50 #define ATOMIC_LONG_SET_OP(mo)                                          \
  51 static inline void atomic_long_set##mo(atomic_long_t *l, long i)        \
  52 {                                                                       \
  53         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;              \
  54                                                                         \
  55         ATOMIC_LONG_PFX(_set##mo)(v, i);                                \
  56 }
  57 ATOMIC_LONG_SET_OP()
  58 ATOMIC_LONG_SET_OP(_release)
  59
  60 #undef ATOMIC_LONG_SET_OP
  61
  62 #define ATOMIC_LONG_ADD_SUB_OP(op, mo)                                  \
  63 static inline long                                                      \
  64 atomic_long_##op##_return##mo(long i, atomic_long_t *l)                 \
  65 {                                                                       \
  66         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;              \
  67                                                                         \
  68         return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(i, v);         \
  69 }
  70 ATOMIC_LONG_ADD_SUB_OP(add,)
  71 ATOMIC_LONG_ADD_SUB_OP(add, _relaxed)
  72 ATOMIC_LONG_ADD_SUB_OP(add, _acquire)
  73 ATOMIC_LONG_ADD_SUB_OP(add, _release)
  74 ATOMIC_LONG_ADD_SUB_OP(sub,)
  75 ATOMIC_LONG_ADD_SUB_OP(sub, _relaxed)
  76 ATOMIC_LONG_ADD_SUB_OP(sub, _acquire)
  77 ATOMIC_LONG_ADD_SUB_OP(sub, _release)
  78
  79 #undef ATOMIC_LONG_ADD_SUB_OP
  80
  81 #define atomic_long_cmpxchg_relaxed(l, old, new) \
  82         (ATOMIC_LONG_PFX(_cmpxchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(l), \
  83                                            (old), (new)))
  84 #define atomic_long_cmpxchg_acquire(l, old, new) \
  85         (ATOMIC_LONG_PFX(_cmpxchg_acquire)((ATOMIC_LONG_PFX(_t) *)(l), \
  86                                            (old), (new)))
  87 #define atomic_long_cmpxchg_release(l, old, new) \
  88         (ATOMIC_LONG_PFX(_cmpxchg_release)((ATOMIC_LONG_PFX(_t) *)(l), \
  89                                            (old), (new)))
  90 #define atomic_long_cmpxchg(l, old, new) \
  91         (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new)))
  92
  93 #define atomic_long_xchg_relaxed(v, new) \
  94         (ATOMIC_LONG_PFX(_xchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
  95 #define atomic_long_xchg_acquire(v, new) \
  96         (ATOMIC_LONG_PFX(_xchg_acquire)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
  97 #define atomic_long_xchg_release(v, new) \
  98         (ATOMIC_LONG_PFX(_xchg_release)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
  99 #define atomic_long_xchg(v, new) \
 100         (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
 101
 102 static __always_inline void atomic_long_inc(atomic_long_t *l)
 103 {
 104         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
 105
 106         ATOMIC_LONG_PFX(_inc)(v);
 107 }
 108
 109 static __always_inline void atomic_long_dec(atomic_long_t *l)
 110 {
 111         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
 112
 113         ATOMIC_LONG_PFX(_dec)(v);
 114 }
 115
 116 #define ATOMIC_LONG_FETCH_OP(op, mo)                                    \
 117 static inline long                                                      \
 118 atomic_long_fetch_##op##mo(long i, atomic_long_t *l)                    \
 119 {                                                                       \
 120         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;              \
 121                                                                         \
 122         return (long)ATOMIC_LONG_PFX(_fetch_##op##mo)(i, v);            \
 123 }
 124
 125 ATOMIC_LONG_FETCH_OP(add, )
 126 ATOMIC_LONG_FETCH_OP(add, _relaxed)
 127 ATOMIC_LONG_FETCH_OP(add, _acquire)
 128 ATOMIC_LONG_FETCH_OP(add, _release)
 129 ATOMIC_LONG_FETCH_OP(sub, )
 130 ATOMIC_LONG_FETCH_OP(sub, _relaxed)
 131 ATOMIC_LONG_FETCH_OP(sub, _acquire)
 132 ATOMIC_LONG_FETCH_OP(sub, _release)
 133 ATOMIC_LONG_FETCH_OP(and, )
 134 ATOMIC_LONG_FETCH_OP(and, _relaxed)
 135 ATOMIC_LONG_FETCH_OP(and, _acquire)
 136 ATOMIC_LONG_FETCH_OP(and, _release)
 137 ATOMIC_LONG_FETCH_OP(andnot, )
 138 ATOMIC_LONG_FETCH_OP(andnot, _relaxed)
 139 ATOMIC_LONG_FETCH_OP(andnot, _acquire)
 140 ATOMIC_LONG_FETCH_OP(andnot, _release)
 141 ATOMIC_LONG_FETCH_OP(or, )
 142 ATOMIC_LONG_FETCH_OP(or, _relaxed)
 143 ATOMIC_LONG_FETCH_OP(or, _acquire)
 144 ATOMIC_LONG_FETCH_OP(or, _release)
 145 ATOMIC_LONG_FETCH_OP(xor, )
 146 ATOMIC_LONG_FETCH_OP(xor, _relaxed)
 147 ATOMIC_LONG_FETCH_OP(xor, _acquire)
 148 ATOMIC_LONG_FETCH_OP(xor, _release)
 149
 150 #undef ATOMIC_LONG_FETCH_OP
 151
 152 #define ATOMIC_LONG_FETCH_INC_DEC_OP(op, mo)                                    \
 153 static inline long                                                      \
 154 atomic_long_fetch_##op##mo(atomic_long_t *l)                            \
 155 {                                                                       \
 156         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;              \
 157                                                                         \
 158         return (long)ATOMIC_LONG_PFX(_fetch_##op##mo)(v);               \
 159 }
 160
 161 ATOMIC_LONG_FETCH_INC_DEC_OP(inc,)
 162 ATOMIC_LONG_FETCH_INC_DEC_OP(inc, _relaxed)
 163 ATOMIC_LONG_FETCH_INC_DEC_OP(inc, _acquire)
 164 ATOMIC_LONG_FETCH_INC_DEC_OP(inc, _release)
 165 ATOMIC_LONG_FETCH_INC_DEC_OP(dec,)
 166 ATOMIC_LONG_FETCH_INC_DEC_OP(dec, _relaxed)
 167 ATOMIC_LONG_FETCH_INC_DEC_OP(dec, _acquire)
 168 ATOMIC_LONG_FETCH_INC_DEC_OP(dec, _release)
 169
 170 #undef ATOMIC_LONG_FETCH_INC_DEC_OP
 171
 172 #define ATOMIC_LONG_OP(op)                                              \
 173 static __always_inline void                                             \
 174 atomic_long_##op(long i, atomic_long_t *l)                              \
 175 {                                                                       \
 176         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;              \
 177                                                                         \
 178         ATOMIC_LONG_PFX(_##op)(i, v);                                   \
 179 }
 180
 181 ATOMIC_LONG_OP(add)
 182 ATOMIC_LONG_OP(sub)
 183 ATOMIC_LONG_OP(and)
 184 ATOMIC_LONG_OP(andnot)
 185 ATOMIC_LONG_OP(or)
 186 ATOMIC_LONG_OP(xor)
 187
 188 #undef ATOMIC_LONG_OP
 189
 190 static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
 191 {
 192         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
 193
 194         return ATOMIC_LONG_PFX(_sub_and_test)(i, v);
 195 }
 196
 197 static inline int atomic_long_dec_and_test(atomic_long_t *l)
 198 {
 199         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
 200
 201         return ATOMIC_LONG_PFX(_dec_and_test)(v);
 202 }
 203
 204 static inline int atomic_long_inc_and_test(atomic_long_t *l)
 205 {
 206         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
 207
 208         return ATOMIC_LONG_PFX(_inc_and_test)(v);
 209 }
 210
 211 static inline int atomic_long_add_negative(long i, atomic_long_t *l)
 212 {
 213         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
 214
 215         return ATOMIC_LONG_PFX(_add_negative)(i, v);
 216 }
 217
 218 #define ATOMIC_LONG_INC_DEC_OP(op, mo)                                  \
 219 static inline long                                                      \
 220 atomic_long_##op##_return##mo(atomic_long_t *l)                         \
 221 {                                                                       \
 222         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;              \
 223                                                                         \
 224         return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(v);            \
 225 }
 226 ATOMIC_LONG_INC_DEC_OP(inc,)
 227 ATOMIC_LONG_INC_DEC_OP(inc, _relaxed)
 228 ATOMIC_LONG_INC_DEC_OP(inc, _acquire)
 229 ATOMIC_LONG_INC_DEC_OP(inc, _release)
 230 ATOMIC_LONG_INC_DEC_OP(dec,)
 231 ATOMIC_LONG_INC_DEC_OP(dec, _relaxed)
 232 ATOMIC_LONG_INC_DEC_OP(dec, _acquire)
 233 ATOMIC_LONG_INC_DEC_OP(dec, _release)
 234
 235 #undef ATOMIC_LONG_INC_DEC_OP
 236
 237 static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
 238 {
 239         ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
 240
 241         return (long)ATOMIC_LONG_PFX(_add_unless)(v, a, u);
 242 }
 243
 244 #define atomic_long_inc_not_zero(l) \
 245         ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l))
 246
 247 #define atomic_long_cond_read_acquire(v, c) \
 248         ATOMIC_LONG_PFX(_cond_read_acquire)((ATOMIC_LONG_PFX(_t) *)(v), (c))
 249
 250 #endif  /*  _ASM_GENERIC_ATOMIC_LONG_H  */