/*
* Copyright (c) 2019 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#ifdef KERNEL_PRIVATE
#ifndef _ARM_SIMPLE_LOCK_TYPES_H_
#define _ARM_SIMPLE_LOCK_TYPES_H_
#include <kern/lock_group.h>
#ifdef KERNEL_PRIVATE
#include <mach/boolean.h>
#include <kern/lock_types.h>
#include <sys/appleapiopts.h>
#ifdef MACH_KERNEL_PRIVATE
#include <arm/locks.h>
#include <mach_ldebug.h>
#endif
#ifdef MACH_KERNEL_PRIVATE
extern machine_timeout_t LockTimeOut; /* Number of hardware ticks of a lock timeout */
extern machine_timeout_t LockTimeOutUsec; /* Number of microseconds for lock timeout */
typedef lck_spin_t usimple_lock_data_t, *usimple_lock_t;
#else /* MACH_KERNEL_PRIVATE */
#if defined(__arm__)
typedef struct slock {
unsigned int lock_data[10];
} usimple_lock_data_t, *usimple_lock_t;
#elif defined(__arm64__)
/*
* ARM64_TODO: this is quite a waste of space (and a
* poorly packed data structure). See if anyone's
* using these outside of osfmk.
* NOTE: only osfmk uses this structure in xnu-2624
*/
typedef struct slock {
uint64_t lock_data[9];
} usimple_lock_data_t, *usimple_lock_t;
#else
#error Unknown architecture.
#endif
#endif /* MACH_KERNEL_PRIVATE */
#define USIMPLE_LOCK_NULL ((usimple_lock_t) 0)
#if !defined(decl_simple_lock_data)
typedef usimple_lock_data_t *simple_lock_t;
typedef usimple_lock_data_t simple_lock_data_t;
#define decl_simple_lock_data(class, name) \
class simple_lock_data_t name
#endif /* !defined(decl_simple_lock_data) */
#ifdef MACH_KERNEL_PRIVATE
#define MACHINE_SIMPLE_LOCK
extern void arm_usimple_lock_init(simple_lock_t, __unused unsigned short);
#define simple_lock_init(l, t) arm_usimple_lock_init(l,t)
#if LCK_GRP_USE_ARG
#define simple_lock(l, grp) lck_spin_lock_grp(l, grp)
#define simple_lock_nopreempt(l, grp) lck_spin_lock_nopreempt_grp(l, grp)
#define simple_lock_try(l, grp) lck_spin_try_lock_grp(l, grp)
#define simple_lock_try_nopreempt(l, grp) lck_spin_try_lock_nopreempt_grp(l, grp)
#else
#define simple_lock(l, grp) lck_spin_lock(l)
#define simple_lock_nopreempt(l, grp) lck_spin_lock_nopreempt(l)
#define simple_lock_try(l, grp) lck_spin_try_lock(l)
#define simple_lock_try_nopreempt(l, grp) lck_spin_try_lock_nopreempt(l)
#endif /* LCK_GRP_USE_ARG */
#define simple_unlock(l) lck_spin_unlock(l)
#define simple_unlock_nopreempt(l) lck_spin_unlock_nopreempt(l)
#define simple_lock_try_lock_loop(l, grp) simple_lock(l, grp)
#define simple_lock_addr(l) (&(l))
#define simple_lock_assert(l, t) lck_spin_assert(l,t)
#define kdp_simple_lock_is_acquired(l) kdp_lck_spin_is_acquired(l)
#endif /* MACH_KERNEL_PRIVATE */
#endif /* KERNEL_PRIVATE */
#endif /* !_ARM_SIMPLE_LOCK_TYPES_H_ */
#endif /* KERNEL_PRIVATE */