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) \ 24void arch_atomic_##op(int, atomic_t *); \ 25void arch_atomic64_##op(s64, atomic64_t *); 26 27#define ATOMIC_OP_RETURN(op) \ 28int arch_atomic_##op##_return(int, atomic_t *); \ 29s64 arch_atomic64_##op##_return(s64, atomic64_t *); 30 31#define ATOMIC_FETCH_OP(op) \ 32int arch_atomic_fetch_##op(int, atomic_t *); \ 33s64 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 37ATOMIC_OPS(add) 38ATOMIC_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 53ATOMIC_OPS(and) 54ATOMIC_OPS(or) 55ATOMIC_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 70s64 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