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 * $FreeBSD$ 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_clear_acq_ptr atomic_clear_acq_32 85 #define atomic_clear_rel_ptr atomic_clear_rel_32 86 #define atomic_set_ptr atomic_set_32 87 #define atomic_set_acq_ptr atomic_set_acq_32 88 #define atomic_set_rel_ptr atomic_set_rel_32 89 #define atomic_cmpset_ptr atomic_cmpset_32 90 #define atomic_cmpset_acq_ptr atomic_cmpset_acq_32 91 #define atomic_cmpset_rel_ptr atomic_cmpset_rel_32 92 #define atomic_load_acq_ptr atomic_load_acq_32 93 #define atomic_store_ptr atomic_store_32 94 #define atomic_store_rel_ptr atomic_store_rel_32 95 #define atomic_swap_ptr atomic_swap_32 96 #define atomic_readandclear_ptr atomic_readandclear_32 97 98 #define atomic_add_int atomic_add_32 99 #define atomic_add_acq_int atomic_add_acq_32 100 #define atomic_add_rel_int atomic_add_rel_32 101 #define atomic_subtract_int atomic_subtract_32 102 #define atomic_subtract_acq_int atomic_subtract_acq_32 103 #define atomic_subtract_rel_int atomic_subtract_rel_32 104 #define atomic_clear_int atomic_clear_32 105 #define atomic_clear_acq_int atomic_clear_acq_32 106 #define atomic_clear_rel_int atomic_clear_rel_32 107 #define atomic_set_int atomic_set_32 108 #define atomic_set_acq_int atomic_set_acq_32 109 #define atomic_set_rel_int atomic_set_rel_32 110 #define atomic_cmpset_int atomic_cmpset_32 111 #define atomic_cmpset_acq_int atomic_cmpset_acq_32 112 #define atomic_cmpset_rel_int atomic_cmpset_rel_32 113 #define atomic_fetchadd_int atomic_fetchadd_32 114 #define atomic_readandclear_int atomic_readandclear_32 115 #define atomic_load_acq_int atomic_load_acq_32 116 #define atomic_store_rel_int atomic_store_rel_32 117 #define atomic_swap_int atomic_swap_32 118 119 #endif /* _MACHINE_ATOMIC_H_ */ 120