xref: /openbmc/linux/arch/sparc/include/asm/atomic_32.h (revision 69f03be1)
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 
21 int arch_atomic_add_return(int, atomic_t *);
22 #define arch_atomic_add_return arch_atomic_add_return
23 
24 int arch_atomic_fetch_add(int, atomic_t *);
25 #define arch_atomic_fetch_add arch_atomic_fetch_add
26 
27 int arch_atomic_fetch_and(int, atomic_t *);
28 #define arch_atomic_fetch_and arch_atomic_fetch_and
29 
30 int arch_atomic_fetch_or(int, atomic_t *);
31 #define arch_atomic_fetch_or arch_atomic_fetch_or
32 
33 int arch_atomic_fetch_xor(int, atomic_t *);
34 #define arch_atomic_fetch_xor arch_atomic_fetch_xor
35 
36 int arch_atomic_cmpxchg(atomic_t *, int, int);
37 #define arch_atomic_cmpxchg arch_atomic_cmpxchg
38 
39 int arch_atomic_xchg(atomic_t *, int);
40 #define arch_atomic_xchg arch_atomic_xchg
41 
42 int arch_atomic_fetch_add_unless(atomic_t *, int, int);
43 #define arch_atomic_fetch_add_unless arch_atomic_fetch_add_unless
44 
45 void 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