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