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__) */ 74