arch/arm64/include/asm/atomic.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Based on arch/arm/include/asm/atomic.h
   4  *
   5  * Copyright (C) 1996 Russell King.
   6  * Copyright (C) 2002 Deep Blue Solutions Ltd.
   7  * Copyright (C) 2012 ARM Ltd.
   8  */
   9 #ifndef __ASM_ATOMIC_H
  10 #define __ASM_ATOMIC_H
  11
  12 #include <linux/compiler.h>
  13 #include <linux/types.h>
  14
  15 #include <asm/barrier.h>
  16 #include <asm/lse.h>
  17
  18 #ifdef __KERNEL__
  19
  20 #define __ARM64_IN_ATOMIC_IMPL
  21
  22 #if defined(CONFIG_ARM64_LSE_ATOMICS) && defined(CONFIG_AS_LSE)
  23 #include <asm/atomic_lse.h>
  24 #else
  25 #include <asm/atomic_ll_sc.h>
  26 #endif
  27
  28 #undef __ARM64_IN_ATOMIC_IMPL
  29
  30 #include <asm/cmpxchg.h>
  31
  32 #define ATOMIC_INIT(i)  { (i) }
  33
  34 #define arch_atomic_read(v)                     READ_ONCE((v)->counter)
  35 #define arch_atomic_set(v, i)                   WRITE_ONCE(((v)->counter), (i))
  36
  37 #define arch_atomic_add_return_relaxed          arch_atomic_add_return_relaxed
  38 #define arch_atomic_add_return_acquire          arch_atomic_add_return_acquire
  39 #define arch_atomic_add_return_release          arch_atomic_add_return_release
  40 #define arch_atomic_add_return                  arch_atomic_add_return
  41
  42 #define arch_atomic_sub_return_relaxed          arch_atomic_sub_return_relaxed
  43 #define arch_atomic_sub_return_acquire          arch_atomic_sub_return_acquire
  44 #define arch_atomic_sub_return_release          arch_atomic_sub_return_release
  45 #define arch_atomic_sub_return                  arch_atomic_sub_return
  46
  47 #define arch_atomic_fetch_add_relaxed           arch_atomic_fetch_add_relaxed
  48 #define arch_atomic_fetch_add_acquire           arch_atomic_fetch_add_acquire
  49 #define arch_atomic_fetch_add_release           arch_atomic_fetch_add_release
  50 #define arch_atomic_fetch_add                   arch_atomic_fetch_add
  51
  52 #define arch_atomic_fetch_sub_relaxed           arch_atomic_fetch_sub_relaxed
  53 #define arch_atomic_fetch_sub_acquire           arch_atomic_fetch_sub_acquire
  54 #define arch_atomic_fetch_sub_release           arch_atomic_fetch_sub_release
  55 #define arch_atomic_fetch_sub                   arch_atomic_fetch_sub
  56
  57 #define arch_atomic_fetch_and_relaxed           arch_atomic_fetch_and_relaxed
  58 #define arch_atomic_fetch_and_acquire           arch_atomic_fetch_and_acquire
  59 #define arch_atomic_fetch_and_release           arch_atomic_fetch_and_release
  60 #define arch_atomic_fetch_and                   arch_atomic_fetch_and
  61
  62 #define arch_atomic_fetch_andnot_relaxed        arch_atomic_fetch_andnot_relaxed
  63 #define arch_atomic_fetch_andnot_acquire        arch_atomic_fetch_andnot_acquire
  64 #define arch_atomic_fetch_andnot_release        arch_atomic_fetch_andnot_release
  65 #define arch_atomic_fetch_andnot                arch_atomic_fetch_andnot
  66
  67 #define arch_atomic_fetch_or_relaxed            arch_atomic_fetch_or_relaxed
  68 #define arch_atomic_fetch_or_acquire            arch_atomic_fetch_or_acquire
  69 #define arch_atomic_fetch_or_release            arch_atomic_fetch_or_release
  70 #define arch_atomic_fetch_or                    arch_atomic_fetch_or
  71
  72 #define arch_atomic_fetch_xor_relaxed           arch_atomic_fetch_xor_relaxed
  73 #define arch_atomic_fetch_xor_acquire           arch_atomic_fetch_xor_acquire
  74 #define arch_atomic_fetch_xor_release           arch_atomic_fetch_xor_release
  75 #define arch_atomic_fetch_xor                   arch_atomic_fetch_xor
  76
  77 #define arch_atomic_xchg_relaxed(v, new) \
  78         arch_xchg_relaxed(&((v)->counter), (new))
  79 #define arch_atomic_xchg_acquire(v, new) \
  80         arch_xchg_acquire(&((v)->counter), (new))
  81 #define arch_atomic_xchg_release(v, new) \
  82         arch_xchg_release(&((v)->counter), (new))
  83 #define arch_atomic_xchg(v, new) \
  84         arch_xchg(&((v)->counter), (new))
  85
  86 #define arch_atomic_cmpxchg_relaxed(v, old, new) \
  87         arch_cmpxchg_relaxed(&((v)->counter), (old), (new))
  88 #define arch_atomic_cmpxchg_acquire(v, old, new) \
  89         arch_cmpxchg_acquire(&((v)->counter), (old), (new))
  90 #define arch_atomic_cmpxchg_release(v, old, new) \
  91         arch_cmpxchg_release(&((v)->counter), (old), (new))
  92 #define arch_atomic_cmpxchg(v, old, new) \
  93         arch_cmpxchg(&((v)->counter), (old), (new))
  94
  95 #define arch_atomic_andnot                      arch_atomic_andnot
  96
  97 /*
  98  * 64-bit arch_atomic operations.
  99  */
 100 #define ATOMIC64_INIT                           ATOMIC_INIT
 101 #define arch_atomic64_read                      arch_atomic_read
 102 #define arch_atomic64_set                       arch_atomic_set
 103
 104 #define arch_atomic64_add_return_relaxed        arch_atomic64_add_return_relaxed
 105 #define arch_atomic64_add_return_acquire        arch_atomic64_add_return_acquire
 106 #define arch_atomic64_add_return_release        arch_atomic64_add_return_release
 107 #define arch_atomic64_add_return                arch_atomic64_add_return
 108
 109 #define arch_atomic64_sub_return_relaxed        arch_atomic64_sub_return_relaxed
 110 #define arch_atomic64_sub_return_acquire        arch_atomic64_sub_return_acquire
 111 #define arch_atomic64_sub_return_release        arch_atomic64_sub_return_release
 112 #define arch_atomic64_sub_return                arch_atomic64_sub_return
 113
 114 #define arch_atomic64_fetch_add_relaxed         arch_atomic64_fetch_add_relaxed
 115 #define arch_atomic64_fetch_add_acquire         arch_atomic64_fetch_add_acquire
 116 #define arch_atomic64_fetch_add_release         arch_atomic64_fetch_add_release
 117 #define arch_atomic64_fetch_add                 arch_atomic64_fetch_add
 118
 119 #define arch_atomic64_fetch_sub_relaxed         arch_atomic64_fetch_sub_relaxed
 120 #define arch_atomic64_fetch_sub_acquire         arch_atomic64_fetch_sub_acquire
 121 #define arch_atomic64_fetch_sub_release         arch_atomic64_fetch_sub_release
 122 #define arch_atomic64_fetch_sub                 arch_atomic64_fetch_sub
 123
 124 #define arch_atomic64_fetch_and_relaxed         arch_atomic64_fetch_and_relaxed
 125 #define arch_atomic64_fetch_and_acquire         arch_atomic64_fetch_and_acquire
 126 #define arch_atomic64_fetch_and_release         arch_atomic64_fetch_and_release
 127 #define arch_atomic64_fetch_and                 arch_atomic64_fetch_and
 128
 129 #define arch_atomic64_fetch_andnot_relaxed      arch_atomic64_fetch_andnot_relaxed
 130 #define arch_atomic64_fetch_andnot_acquire      arch_atomic64_fetch_andnot_acquire
 131 #define arch_atomic64_fetch_andnot_release      arch_atomic64_fetch_andnot_release
 132 #define arch_atomic64_fetch_andnot              arch_atomic64_fetch_andnot
 133
 134 #define arch_atomic64_fetch_or_relaxed          arch_atomic64_fetch_or_relaxed
 135 #define arch_atomic64_fetch_or_acquire          arch_atomic64_fetch_or_acquire
 136 #define arch_atomic64_fetch_or_release          arch_atomic64_fetch_or_release
 137 #define arch_atomic64_fetch_or                  arch_atomic64_fetch_or
 138
 139 #define arch_atomic64_fetch_xor_relaxed         arch_atomic64_fetch_xor_relaxed
 140 #define arch_atomic64_fetch_xor_acquire         arch_atomic64_fetch_xor_acquire
 141 #define arch_atomic64_fetch_xor_release         arch_atomic64_fetch_xor_release
 142 #define arch_atomic64_fetch_xor                 arch_atomic64_fetch_xor
 143
 144 #define arch_atomic64_xchg_relaxed              arch_atomic_xchg_relaxed
 145 #define arch_atomic64_xchg_acquire              arch_atomic_xchg_acquire
 146 #define arch_atomic64_xchg_release              arch_atomic_xchg_release
 147 #define arch_atomic64_xchg                      arch_atomic_xchg
 148
 149 #define arch_atomic64_cmpxchg_relaxed           arch_atomic_cmpxchg_relaxed
 150 #define arch_atomic64_cmpxchg_acquire           arch_atomic_cmpxchg_acquire
 151 #define arch_atomic64_cmpxchg_release           arch_atomic_cmpxchg_release
 152 #define arch_atomic64_cmpxchg                   arch_atomic_cmpxchg
 153
 154 #define arch_atomic64_andnot                    arch_atomic64_andnot
 155
 156 #define arch_atomic64_dec_if_positive           arch_atomic64_dec_if_positive
 157
 158 #include <asm-generic/atomic-instrumented.h>
 159
 160 #endif
 161 #endif