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
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