1 | /* |
2 | * Copyright (c) 2019 Apple 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 | * @OSF_COPYRIGHT@ |
30 | */ |
31 | /* |
32 | * Mach Operating System |
33 | * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University |
34 | * All Rights Reserved. |
35 | * |
36 | * Permission to use, copy, modify and distribute this software and its |
37 | * documentation is hereby granted, provided that both the copyright |
38 | * notice and this permission notice appear in all copies of the |
39 | * software, derivative works or modified versions, and any portions |
40 | * thereof, and that both notices appear in supporting documentation. |
41 | * |
42 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
43 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
44 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
45 | * |
46 | * Carnegie Mellon requests users of this software to return to |
47 | * |
48 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
49 | * School of Computer Science |
50 | * Carnegie Mellon University |
51 | * Pittsburgh PA 15213-3890 |
52 | * |
53 | * any improvements or extensions that they make and grant Carnegie Mellon |
54 | * the rights to redistribute these changes. |
55 | */ |
56 | |
57 | #ifdef KERNEL_PRIVATE |
58 | |
59 | #ifndef _ARM_SIMPLE_LOCK_TYPES_H_ |
60 | #define _ARM_SIMPLE_LOCK_TYPES_H_ |
61 | |
62 | #include <kern/lock_group.h> |
63 | |
64 | #ifdef KERNEL_PRIVATE |
65 | #include <mach/boolean.h> |
66 | #include <kern/lock_types.h> |
67 | #include <sys/appleapiopts.h> |
68 | #ifdef MACH_KERNEL_PRIVATE |
69 | #include <arm/locks.h> |
70 | #include <mach_ldebug.h> |
71 | #endif |
72 | |
73 | #ifdef MACH_KERNEL_PRIVATE |
74 | |
75 | extern machine_timeout_t LockTimeOut; /* Number of hardware ticks of a lock timeout */ |
76 | extern machine_timeout_t LockTimeOutUsec; /* Number of microseconds for lock timeout */ |
77 | |
78 | typedef lck_spin_t usimple_lock_data_t, *usimple_lock_t; |
79 | #else /* MACH_KERNEL_PRIVATE */ |
80 | |
81 | #if defined(__arm__) |
82 | typedef struct slock { |
83 | unsigned int lock_data[10]; |
84 | } usimple_lock_data_t, *usimple_lock_t; |
85 | #elif defined(__arm64__) |
86 | /* |
87 | * ARM64_TODO: this is quite a waste of space (and a |
88 | * poorly packed data structure). See if anyone's |
89 | * using these outside of osfmk. |
90 | * NOTE: only osfmk uses this structure in xnu-2624 |
91 | */ |
92 | typedef struct slock { |
93 | uint64_t lock_data[9]; |
94 | } usimple_lock_data_t, *usimple_lock_t; |
95 | #else |
96 | #error Unknown architecture. |
97 | #endif |
98 | |
99 | #endif /* MACH_KERNEL_PRIVATE */ |
100 | |
101 | #define USIMPLE_LOCK_NULL ((usimple_lock_t) 0) |
102 | |
103 | #if !defined(decl_simple_lock_data) |
104 | |
105 | typedef usimple_lock_data_t *simple_lock_t; |
106 | typedef usimple_lock_data_t simple_lock_data_t; |
107 | |
108 | #define decl_simple_lock_data(class, name) \ |
109 | class simple_lock_data_t name |
110 | |
111 | #endif /* !defined(decl_simple_lock_data) */ |
112 | |
113 | #ifdef MACH_KERNEL_PRIVATE |
114 | |
115 | #define MACHINE_SIMPLE_LOCK |
116 | |
117 | extern void arm_usimple_lock_init(simple_lock_t, __unused unsigned short); |
118 | |
119 | #define simple_lock_init(l, t) arm_usimple_lock_init(l,t) |
120 | |
121 | #if LCK_GRP_USE_ARG |
122 | #define simple_lock(l, grp) lck_spin_lock_grp(l, grp) |
123 | #define simple_lock_nopreempt(l, grp) lck_spin_lock_nopreempt_grp(l, grp) |
124 | #define simple_lock_try(l, grp) lck_spin_try_lock_grp(l, grp) |
125 | #define simple_lock_try_nopreempt(l, grp) lck_spin_try_lock_nopreempt_grp(l, grp) |
126 | #else |
127 | #define simple_lock(l, grp) lck_spin_lock(l) |
128 | #define simple_lock_nopreempt(l, grp) lck_spin_lock_nopreempt(l) |
129 | #define simple_lock_try(l, grp) lck_spin_try_lock(l) |
130 | #define simple_lock_try_nopreempt(l, grp) lck_spin_try_lock_nopreempt(l) |
131 | #endif /* LCK_GRP_USE_ARG */ |
132 | |
133 | #define simple_unlock(l) lck_spin_unlock(l) |
134 | #define simple_unlock_nopreempt(l) lck_spin_unlock_nopreempt(l) |
135 | |
136 | #define simple_lock_try_lock_loop(l, grp) simple_lock(l, grp) |
137 | |
138 | #define simple_lock_addr(l) (&(l)) |
139 | #define simple_lock_assert(l, t) lck_spin_assert(l,t) |
140 | #define kdp_simple_lock_is_acquired(l) kdp_lck_spin_is_acquired(l) |
141 | |
142 | #endif /* MACH_KERNEL_PRIVATE */ |
143 | #endif /* KERNEL_PRIVATE */ |
144 | |
145 | #endif /* !_ARM_SIMPLE_LOCK_TYPES_H_ */ |
146 | |
147 | #endif /* KERNEL_PRIVATE */ |
148 | |