1 /* $NetBSD: atomic.h,v 1.1 2002/10/19 12:22:34 bsh Exp $ */
2
3 /*-
4 * Copyright (C) 2003-2004 Olivier Houchard
5 * Copyright (C) 1994-1997 Mark Brinicombe
6 * Copyright (C) 1994 Brini
7 * All rights reserved.
8 *
9 * This code is derived from software written for Brini by Mark Brinicombe
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by Brini.
22 * 4. The name of Brini may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL BRINI BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
31 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
33 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
34 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * $FreeBSD: releng/11.0/sys/arm/include/atomic.h 300694 2016-05-25 19:44:26Z ian $
37 */
38
39 #ifndef _MACHINE_ATOMIC_H_
40 #define _MACHINE_ATOMIC_H_
41
42 #include <sys/types.h>
43 #include <machine/armreg.h>
44
45 #ifndef _KERNEL
46 #include <machine/sysarch.h>
47 #else
48 #include <machine/cpuconf.h>
49 #endif
50
51 #if __ARM_ARCH >= 6
52 #include <machine/atomic-v6.h>
53 #else /* < armv6 */
54 #include <machine/atomic-v4.h>
55 #endif /* Arch >= v6 */
56
57 static __inline int
58 atomic_load_32(volatile uint32_t *v)
59 {
60
61 return (*v);
62 }
63
64 static __inline void
65 atomic_store_32(volatile uint32_t *dst, uint32_t src)
66 {
67 *dst = src;
68 }
69
70 static __inline int
71 atomic_load_long(volatile u_long *v)
72 {
73
74 return (*v);
75 }
76
77 static __inline void
78 atomic_store_long(volatile u_long *dst, u_long src)
79 {
80 *dst = src;
81 }
82
83 #define atomic_clear_ptr atomic_clear_32
84 #define atomic_set_ptr atomic_set_32
85 #define atomic_cmpset_ptr atomic_cmpset_32
86 #define atomic_cmpset_rel_ptr atomic_cmpset_rel_32
87 #define atomic_cmpset_acq_ptr atomic_cmpset_acq_32
88 #define atomic_store_ptr atomic_store_32
89 #define atomic_store_rel_ptr atomic_store_rel_32
90
91 #define atomic_add_int atomic_add_32
92 #define atomic_add_acq_int atomic_add_acq_32
93 #define atomic_add_rel_int atomic_add_rel_32
94 #define atomic_subtract_int atomic_subtract_32
95 #define atomic_subtract_acq_int atomic_subtract_acq_32
96 #define atomic_subtract_rel_int atomic_subtract_rel_32
97 #define atomic_clear_int atomic_clear_32
98 #define atomic_clear_acq_int atomic_clear_acq_32
99 #define atomic_clear_rel_int atomic_clear_rel_32
100 #define atomic_set_int atomic_set_32
101 #define atomic_set_acq_int atomic_set_acq_32
102 #define atomic_set_rel_int atomic_set_rel_32
103 #define atomic_cmpset_int atomic_cmpset_32
104 #define atomic_cmpset_acq_int atomic_cmpset_acq_32
105 #define atomic_cmpset_rel_int atomic_cmpset_rel_32
106 #define atomic_fetchadd_int atomic_fetchadd_32
107 #define atomic_readandclear_int atomic_readandclear_32
108 #define atomic_load_acq_int atomic_load_acq_32
109 #define atomic_store_rel_int atomic_store_rel_32
110 #define atomic_swap_int atomic_swap_32
111
112 #endif /* _MACHINE_ATOMIC_H_ */
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