1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright IBM Corp. 1999, 2016 4 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>, 5 * Denis Joseph Barrow, 6 * Arnd Bergmann, 7 */ 8 9 #ifndef __ARCH_S390_ATOMIC__ 10 #define __ARCH_S390_ATOMIC__ 11 12 #include <linux/compiler.h> 13 #include <linux/types.h> 14 #include <asm/atomic_ops.h> 15 #include <asm/barrier.h> 16 #include <asm/cmpxchg.h> 17 18 static inline int arch_atomic_read(const atomic_t *v) 19 { 20 return __atomic_read(v); 21 } 22 #define arch_atomic_read arch_atomic_read 23 24 static inline void arch_atomic_set(atomic_t *v, int i) 25 { 26 __atomic_set(v, i); 27 } 28 #define arch_atomic_set arch_atomic_set 29 30 static inline int arch_atomic_add_return(int i, atomic_t *v) 31 { 32 return __atomic_add_barrier(i, &v->counter) + i; 33 } 34 #define arch_atomic_add_return arch_atomic_add_return 35 36 static inline int arch_atomic_fetch_add(int i, atomic_t *v) 37 { 38 return __atomic_add_barrier(i, &v->counter); 39 } 40 #define arch_atomic_fetch_add arch_atomic_fetch_add 41 42 static inline void arch_atomic_add(int i, atomic_t *v) 43 { 44 __atomic_add(i, &v->counter); 45 } 46 #define arch_atomic_add arch_atomic_add 47 48 #define arch_atomic_sub(_i, _v) arch_atomic_add(-(int)(_i), _v) 49 #define arch_atomic_sub_return(_i, _v) arch_atomic_add_return(-(int)(_i), _v) 50 #define arch_atomic_fetch_sub(_i, _v) arch_atomic_fetch_add(-(int)(_i), _v) 51 52 #define ATOMIC_OPS(op) \ 53 static inline void arch_atomic_##op(int i, atomic_t *v) \ 54 { \ 55 __atomic_##op(i, &v->counter); \ 56 } \ 57 static inline int arch_atomic_fetch_##op(int i, atomic_t *v) \ 58 { \ 59 return __atomic_##op##_barrier(i, &v->counter); \ 60 } 61 62 ATOMIC_OPS(and) 63 ATOMIC_OPS(or) 64 ATOMIC_OPS(xor) 65 66 #undef ATOMIC_OPS 67 68 #define arch_atomic_and arch_atomic_and 69 #define arch_atomic_or arch_atomic_or 70 #define arch_atomic_xor arch_atomic_xor 71 #define arch_atomic_fetch_and arch_atomic_fetch_and 72 #define arch_atomic_fetch_or arch_atomic_fetch_or 73 #define arch_atomic_fetch_xor arch_atomic_fetch_xor 74 75 #define arch_atomic_xchg(v, new) (arch_xchg(&((v)->counter), new)) 76 77 static inline int arch_atomic_cmpxchg(atomic_t *v, int old, int new) 78 { 79 return __atomic_cmpxchg(&v->counter, old, new); 80 } 81 #define arch_atomic_cmpxchg arch_atomic_cmpxchg 82 83 #define ATOMIC64_INIT(i) { (i) } 84 85 static inline s64 arch_atomic64_read(const atomic64_t *v) 86 { 87 return __atomic64_read(v); 88 } 89 #define arch_atomic64_read arch_atomic64_read 90 91 static inline void arch_atomic64_set(atomic64_t *v, s64 i) 92 { 93 __atomic64_set(v, i); 94 } 95 #define arch_atomic64_set arch_atomic64_set 96 97 static inline s64 arch_atomic64_add_return(s64 i, atomic64_t *v) 98 { 99 return __atomic64_add_barrier(i, (long *)&v->counter) + i; 100 } 101 #define arch_atomic64_add_return arch_atomic64_add_return 102 103 static inline s64 arch_atomic64_fetch_add(s64 i, atomic64_t *v) 104 { 105 return __atomic64_add_barrier(i, (long *)&v->counter); 106 } 107 #define arch_atomic64_fetch_add arch_atomic64_fetch_add 108 109 static inline void arch_atomic64_add(s64 i, atomic64_t *v) 110 { 111 __atomic64_add(i, (long *)&v->counter); 112 } 113 #define arch_atomic64_add arch_atomic64_add 114 115 #define arch_atomic64_xchg(v, new) (arch_xchg(&((v)->counter), new)) 116 117 static inline s64 arch_atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new) 118 { 119 return __atomic64_cmpxchg((long *)&v->counter, old, new); 120 } 121 #define arch_atomic64_cmpxchg arch_atomic64_cmpxchg 122 123 #define ATOMIC64_OPS(op) \ 124 static inline void arch_atomic64_##op(s64 i, atomic64_t *v) \ 125 { \ 126 __atomic64_##op(i, (long *)&v->counter); \ 127 } \ 128 static inline long arch_atomic64_fetch_##op(s64 i, atomic64_t *v) \ 129 { \ 130 return __atomic64_##op##_barrier(i, (long *)&v->counter); \ 131 } 132 133 ATOMIC64_OPS(and) 134 ATOMIC64_OPS(or) 135 ATOMIC64_OPS(xor) 136 137 #undef ATOMIC64_OPS 138 139 #define arch_atomic64_and arch_atomic64_and 140 #define arch_atomic64_or arch_atomic64_or 141 #define arch_atomic64_xor arch_atomic64_xor 142 #define arch_atomic64_fetch_and arch_atomic64_fetch_and 143 #define arch_atomic64_fetch_or arch_atomic64_fetch_or 144 #define arch_atomic64_fetch_xor arch_atomic64_fetch_xor 145 146 #define arch_atomic64_sub_return(_i, _v) arch_atomic64_add_return(-(s64)(_i), _v) 147 #define arch_atomic64_fetch_sub(_i, _v) arch_atomic64_fetch_add(-(s64)(_i), _v) 148 #define arch_atomic64_sub(_i, _v) arch_atomic64_add(-(s64)(_i), _v) 149 150 #define ARCH_ATOMIC 151 152 #endif /* __ARCH_S390_ATOMIC__ */ 153