arch/sparc/include/asm/atomic_64.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* atomic.h: Thankfully the V9 is at least reasonable for this
   3  *           stuff.
   4  *
   5  * Copyright (C) 1996, 1997, 2000, 2012 David S. Miller (davem@redhat.com)
   6  */
   7
   8 #ifndef __ARCH_SPARC64_ATOMIC__
   9 #define __ARCH_SPARC64_ATOMIC__
  10
  11 #include <linux/types.h>
  12 #include <asm/cmpxchg.h>
  13 #include <asm/barrier.h>
  14
  15 #define ATOMIC64_INIT(i)        { (i) }
  16
  17 #define arch_atomic_read(v)     READ_ONCE((v)->counter)
  18 #define arch_atomic64_read(v)   READ_ONCE((v)->counter)
  19
  20 #define arch_atomic_set(v, i)   WRITE_ONCE(((v)->counter), (i))
  21 #define arch_atomic64_set(v, i) WRITE_ONCE(((v)->counter), (i))
  22
  23 #define ATOMIC_OP(op)                                                   \
  24 void arch_atomic_##op(int, atomic_t *);                                 \
  25 void arch_atomic64_##op(s64, atomic64_t *);
  26
  27 #define ATOMIC_OP_RETURN(op)                                            \
  28 int arch_atomic_##op##_return(int, atomic_t *);                         \
  29 s64 arch_atomic64_##op##_return(s64, atomic64_t *);
  30
  31 #define ATOMIC_FETCH_OP(op)                                             \
  32 int arch_atomic_fetch_##op(int, atomic_t *);                            \
  33 s64 arch_atomic64_fetch_##op(s64, atomic64_t *);
  34
  35 #define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op)
  36
  37 ATOMIC_OPS(add)
  38 ATOMIC_OPS(sub)
  39
  40 #define arch_atomic_add_return                  arch_atomic_add_return
  41 #define arch_atomic_sub_return                  arch_atomic_sub_return
  42 #define arch_atomic_fetch_add                   arch_atomic_fetch_add
  43 #define arch_atomic_fetch_sub                   arch_atomic_fetch_sub
  44
  45 #define arch_atomic64_add_return                arch_atomic64_add_return
  46 #define arch_atomic64_sub_return                arch_atomic64_sub_return
  47 #define arch_atomic64_fetch_add                 arch_atomic64_fetch_add
  48 #define arch_atomic64_fetch_sub                 arch_atomic64_fetch_sub
  49
  50 #undef ATOMIC_OPS
  51 #define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op)
  52
  53 ATOMIC_OPS(and)
  54 ATOMIC_OPS(or)
  55 ATOMIC_OPS(xor)
  56
  57 #define arch_atomic_fetch_and                   arch_atomic_fetch_and
  58 #define arch_atomic_fetch_or                    arch_atomic_fetch_or
  59 #define arch_atomic_fetch_xor                   arch_atomic_fetch_xor
  60
  61 #define arch_atomic64_fetch_and                 arch_atomic64_fetch_and
  62 #define arch_atomic64_fetch_or                  arch_atomic64_fetch_or
  63 #define arch_atomic64_fetch_xor                 arch_atomic64_fetch_xor
  64
  65 #undef ATOMIC_OPS
  66 #undef ATOMIC_FETCH_OP
  67 #undef ATOMIC_OP_RETURN
  68 #undef ATOMIC_OP
  69
  70 s64 arch_atomic64_dec_if_positive(atomic64_t *v);
  71 #define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
  72
  73 #endif /* !(__ARCH_SPARC64_ATOMIC__) */