osfmk/ppc/lock.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (C) 1998 Apple Computer
  27  * All Rights Reserved
  28  */
  29 /*
  30  * @OSF_COPYRIGHT@
  31  */
  32
  33 /*
  34  * Mach Operating System
  35  * Copyright (c) 1991,1990 Carnegie Mellon University
  36  * All Rights Reserved.
  37  *
  38  * Permission to use, copy, modify and distribute this software and its
  39  * documentation is hereby granted, provided that both the copyright
  40  * notice and this permission notice appear in all copies of the
  41  * software, derivative works or modified versions, and any portions
  42  * thereof, and that both notices appear in supporting documentation.
  43  *
  44  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  45  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  46  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  47  *
  48  * Carnegie Mellon requests users of this software to return to
  49  *
  50  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  51  *  School of Computer Science
  52  *  Carnegie Mellon University
  53  *  Pittsburgh PA 15213-3890
  54  *
  55  * any improvements or extensions that they make and grant Carnegie Mellon
  56  * the rights to redistribute these changes.
  57  */
  58
  59 #ifndef _PPC_LOCK_H_
  60 #define _PPC_LOCK_H_
  61
  62 #include <sys/appleapiopts.h>
  63
  64 #ifdef __APPLE_API_PRIVATE
  65
  66 #include <kern/macro_help.h>
  67 #include <kern/assert.h>
  68 #include <mach/etap_events.h>
  69 #include <mach/etap.h>
  70
  71 extern unsigned int LockTimeOut;                        /* Number of hardware ticks of a lock timeout */
  72
  73 #if defined(MACH_KERNEL_PRIVATE)
  74
  75 #include <cpus.h>
  76
  77 #if !(NCPUS == 1 || ETAP_LOCK_TRACE || USLOCK_DEBUG)
  78
  79 #include <ppc/hw_lock_types.h>
  80
  81 #define __slock_held_func__(l)  hw_lock_held(l)
  82
  83 extern void                     ppc_usimple_lock_init(simple_lock_t,etap_event_t);
  84 extern void                     ppc_usimple_lock(simple_lock_t);
  85 extern void                     ppc_usimple_unlock_rwmb(simple_lock_t);
  86 extern void                     ppc_usimple_unlock_rwcmb(simple_lock_t);
  87 extern unsigned int             ppc_usimple_lock_try(simple_lock_t);
  88
  89 #define MACHINE_SIMPLE_LOCK
  90
  91 #define simple_lock_init(l,t)   ppc_usimple_lock_init(l,t)
  92 #define simple_lock(l)                  ppc_usimple_lock(l)
  93 #define simple_unlock(l)                ppc_usimple_unlock_rwcmb(l)
  94 #define simple_unlock_rwmb(l)           ppc_usimple_unlock_rwmb(l)
  95 #define simple_lock_try(l)              ppc_usimple_lock_try(l)
  96 #define simple_lock_addr(l)             (&(l))
  97 #define thread_sleep_simple_lock(l, e, i) \
  98                                 thread_sleep_fast_usimple_lock((l), (e), (i))
  99
 100 #define mutex_unlock(l)         mutex_unlock_rwcmb(l)
 101
 102 #endif /* !(NCPUS == 1 || ETAP_LOCK_TRACE || USLOCK_DEBUG) */
 103
 104 #endif /* MACH_KERNEL_PRIVATE */
 105
 106 #endif /* __APPLE_API_PRIVATE */
 107
 108 #endif  /* _PPC_LOCK_H_ */