1/* SPDX-License-Identifier: GPL-2.0 */
2/* atomic.h: These still suck, but the I-cache hit rate is higher.
3 *
4 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
5 * Copyright (C) 2000 Anton Blanchard (anton@linuxcare.com.au)
6 * Copyright (C) 2007 Kyle McMartin (kyle@parisc-linux.org)
7 *
8 * Additions by Keith M Wesolowski (wesolows@foobazco.org) based
9 * on asm-parisc/atomic.h Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>.
10 */
11
12#ifndef __ARCH_SPARC_ATOMIC__
13#define __ARCH_SPARC_ATOMIC__
14
15#include <linux/types.h>
16
17#include <asm/cmpxchg.h>
18#include <asm/barrier.h>
19#include <asm-generic/atomic64.h>
20
21int arch_atomic_add_return(int, atomic_t *);
22#define arch_atomic_add_return arch_atomic_add_return
23
24int arch_atomic_fetch_add(int, atomic_t *);
25#define arch_atomic_fetch_add arch_atomic_fetch_add
26
27int arch_atomic_fetch_and(int, atomic_t *);
28#define arch_atomic_fetch_and arch_atomic_fetch_and
29
30int arch_atomic_fetch_or(int, atomic_t *);
31#define arch_atomic_fetch_or arch_atomic_fetch_or
32
33int arch_atomic_fetch_xor(int, atomic_t *);
34#define arch_atomic_fetch_xor arch_atomic_fetch_xor
35
36int arch_atomic_cmpxchg(atomic_t *, int, int);
37#define arch_atomic_cmpxchg arch_atomic_cmpxchg
38
39int arch_atomic_xchg(atomic_t *, int);
40#define arch_atomic_xchg arch_atomic_xchg
41
42int arch_atomic_fetch_add_unless(atomic_t *, int, int);
43#define arch_atomic_fetch_add_unless arch_atomic_fetch_add_unless
44
45void arch_atomic_set(atomic_t *, int);
46
47#define arch_atomic_set_release(v, i)	arch_atomic_set((v), (i))
48
49#define arch_atomic_read(v)		READ_ONCE((v)->counter)
50
51#define arch_atomic_add(i, v)	((void)arch_atomic_add_return( (int)(i), (v)))
52#define arch_atomic_sub(i, v)	((void)arch_atomic_add_return(-(int)(i), (v)))
53
54#define arch_atomic_and(i, v)	((void)arch_atomic_fetch_and((i), (v)))
55#define arch_atomic_or(i, v)	((void)arch_atomic_fetch_or((i), (v)))
56#define arch_atomic_xor(i, v)	((void)arch_atomic_fetch_xor((i), (v)))
57
58#define arch_atomic_sub_return(i, v)	(arch_atomic_add_return(-(int)(i), (v)))
59#define arch_atomic_fetch_sub(i, v)	(arch_atomic_fetch_add (-(int)(i), (v)))
60
61#endif /* !(__ARCH_SPARC_ATOMIC__) */
62