| | 1 | /* |
| | 2 | * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * Copyright (C) 1998 Apple Computer |
| | 30 | * All Rights Reserved |
| | 31 | */ |
| | 32 | /* |
| | 33 | * @OSF_COPYRIGHT@ |
| | 34 | */ |
| | 35 | /* |
| | 36 | * Mach Operating System |
| | 37 | * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University |
| | 38 | * All Rights Reserved. |
| | 39 | * |
| | 40 | * Permission to use, copy, modify and distribute this software and its |
| | 41 | * documentation is hereby granted, provided that both the copyright |
| | 42 | * notice and this permission notice appear in all copies of the |
| | 43 | * software, derivative works or modified versions, and any portions |
| | 44 | * thereof, and that both notices appear in supporting documentation. |
| | 45 | * |
| | 46 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| | 47 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
| | 48 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| | 49 | * |
| | 50 | * Carnegie Mellon requests users of this software to return to |
| | 51 | * |
| | 52 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| | 53 | * School of Computer Science |
| | 54 | * Carnegie Mellon University |
| | 55 | * Pittsburgh PA 15213-3890 |
| | 56 | * |
| | 57 | * any improvements or extensions that they make and grant Carnegie Mellon |
| | 58 | * the rights to redistribute these changes. |
| | 59 | */ |
| | 60 | /* |
| | 61 | * File: kern/simple_lock.h (derived from kern/lock.h) |
| | 62 | * Author: Avadis Tevanian, Jr., Michael Wayne Young |
| | 63 | * Date: 1985 |
| | 64 | * |
| | 65 | * Atomic primitives and Simple Locking primitives definitions |
| | 66 | */ |
| | 67 | |
| | 68 | #ifdef KERNEL_PRIVATE |
| | 69 | |
| | 70 | #ifndef _KERN_SIMPLE_LOCK_H_ |
| | 71 | #define _KERN_SIMPLE_LOCK_H_ |
| | 72 | |
| | 73 | #include <sys/cdefs.h> |
| | 74 | #include <mach/boolean.h> |
| | 75 | #include <kern/kern_types.h> |
| | 76 | #include <machine/simple_lock.h> |
| | 77 | |
| | 78 | #ifdef MACH_KERNEL_PRIVATE |
| | 79 | #include <mach_ldebug.h> |
| | 80 | |
| | 81 | extern void hw_lock_init( |
| | 82 | hw_lock_t); |
| | 83 | |
| | 84 | extern void hw_lock_lock( |
| | 85 | hw_lock_t); |
| | 86 | |
| | 87 | extern void hw_lock_unlock( |
| | 88 | hw_lock_t); |
| | 89 | |
| | 90 | extern unsigned int hw_lock_to( |
| | 91 | hw_lock_t, |
| | 92 | unsigned int); |
| | 93 | |
| | 94 | extern unsigned int hw_lock_try( |
| | 95 | hw_lock_t); |
| | 96 | |
| | 97 | extern unsigned int hw_lock_held( |
| | 98 | hw_lock_t); |
| | 99 | |
| | 100 | #endif /* MACH_KERNEL_PRIVATE */ |
| | 101 | |
| | 102 | __BEGIN_DECLS |
| | 103 | |
| | 104 | extern uint32_t hw_atomic_add( |
| | 105 | volatile uint32_t *dest, |
| | 106 | uint32_t delt); |
| | 107 | |
| | 108 | extern uint32_t hw_atomic_sub( |
| | 109 | volatile uint32_t *dest, |
| | 110 | uint32_t delt); |
| | 111 | |
| | 112 | extern uint32_t hw_atomic_or( |
| | 113 | volatile uint32_t *dest, |
| | 114 | uint32_t mask); |
| | 115 | |
| | 116 | extern uint32_t hw_atomic_and( |
| | 117 | volatile uint32_t *dest, |
| | 118 | uint32_t mask); |
| | 119 | |
| | 120 | /* |
| | 121 | * Variant of hw_atomic_or which doesn't return a value; potentially |
| | 122 | * more efficient on some platforms. |
| | 123 | */ |
| | 124 | extern void hw_atomic_or_noret( |
| | 125 | volatile uint32_t *dest, |
| | 126 | uint32_t mask); |
| | 127 | /* |
| | 128 | * Variant of hw_atomic_and which doesn't return a value; potentially |
| | 129 | * more efficient on some platforms. |
| | 130 | */ |
| | 131 | |
| | 132 | extern void hw_atomic_and_noret( |
| | 133 | volatile uint32_t *dest, |
| | 134 | uint32_t mask); |
| | 135 | |
| | 136 | extern uint32_t hw_compare_and_store( |
| | 137 | uint32_t oldval, |
| | 138 | uint32_t newval, |
| | 139 | volatile uint32_t *dest); |
| | 140 | |
| | 141 | extern void hw_queue_atomic( |
| | 142 | unsigned int *anchor, |
| | 143 | unsigned int *elem, |
| | 144 | unsigned int disp); |
| | 145 | |
| | 146 | extern void hw_queue_atomic_list( |
| | 147 | unsigned int *anchor, |
| | 148 | unsigned int *first, |
| | 149 | unsigned int *last, |
| | 150 | unsigned int disp); |
| | 151 | |
| | 152 | extern unsigned int *hw_dequeue_atomic( |
| | 153 | unsigned int *anchor, |
| | 154 | unsigned int disp); |
| | 155 | |
| | 156 | extern void usimple_lock_init( |
| | 157 | usimple_lock_t, |
| | 158 | unsigned short); |
| | 159 | |
| | 160 | extern void usimple_lock( |
| | 161 | usimple_lock_t); |
| | 162 | |
| | 163 | extern void usimple_unlock( |
| | 164 | usimple_lock_t); |
| | 165 | |
| | 166 | extern unsigned int usimple_lock_try( |
| | 167 | usimple_lock_t); |
| | 168 | |
| | 169 | __END_DECLS |
| | 170 | |
| | 171 | #define ETAP_NO_TRACE 0 |
| | 172 | #define ETAP_IO_AHA 0 |
| | 173 | |
| | 174 | /* |
| | 175 | * If we got to here and we still don't have simple_lock_init |
| | 176 | * defined, then we must either be outside the osfmk component, |
| | 177 | * running on a true SMP, or need debug. |
| | 178 | */ |
| | 179 | #if !defined(simple_lock_init) |
| | 180 | #define simple_lock_init(l,t) usimple_lock_init(l,t) |
| | 181 | #define simple_lock(l) usimple_lock(l) |
| | 182 | #define simple_unlock(l) usimple_unlock(l) |
| | 183 | #define simple_lock_try(l) usimple_lock_try(l) |
| | 184 | #define simple_lock_addr(l) (&(l)) |
| | 185 | #endif /* !defined(simple_lock_init) */ |
| | 186 | |
| | 187 | #endif /*!_KERN_SIMPLE_LOCK_H_*/ |
| | 188 | |
| | 189 | #endif /* KERNEL_PRIVATE */ |
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