1 /******************************************************************************
2 *
3 * Name: aclinux.h - OS specific defines, etc. for Linux
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, Intel Corp.
9 * All rights reserved.
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 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44 #ifndef __ACLINUX_H__
45 #define __ACLINUX_H__
46
47 /* Common (in-kernel/user-space) ACPICA configuration */
48
49 #define ACPI_USE_SYSTEM_CLIBRARY
50 #define ACPI_USE_DO_WHILE_0
51 #define ACPI_MUTEX_TYPE ACPI_BINARY_SEMAPHORE
52
53
54 #ifdef __KERNEL__
55
56 #include <linux/string.h>
57 #include <linux/kernel.h>
58 #include <linux/ctype.h>
59 #include <linux/sched.h>
60 #include <linux/atomic.h>
61 #include <asm/div64.h>
62 #include <asm/acpi.h>
63 #include <linux/slab.h>
64 #include <linux/spinlock_types.h>
65 #include <asm/current.h>
66
67 /* Host-dependent types and defines for in-kernel ACPICA */
68
69 #define ACPI_MACHINE_WIDTH BITS_PER_LONG
70 #define ACPI_EXPORT_SYMBOL(symbol) EXPORT_SYMBOL(symbol);
71 #define strtoul simple_strtoul
72
73 #define acpi_cache_t struct kmem_cache
74 #define acpi_spinlock spinlock_t *
75 #define acpi_cpu_flags unsigned long
76
77 #else /* !__KERNEL__ */
78
79 #include <stdarg.h>
80 #include <string.h>
81 #include <stdlib.h>
82 #include <ctype.h>
83 #include <unistd.h>
84
85 /* Host-dependent types and defines for user-space ACPICA */
86
87 #define ACPI_FLUSH_CPU_CACHE()
88 #define ACPI_CAST_PTHREAD_T(pthread) ((acpi_thread_id) (pthread))
89
90 #if defined(__ia64__) || defined(__x86_64__)
91 #define ACPI_MACHINE_WIDTH 64
92 #define COMPILER_DEPENDENT_INT64 long
93 #define COMPILER_DEPENDENT_UINT64 unsigned long
94 #else
95 #define ACPI_MACHINE_WIDTH 32
96 #define COMPILER_DEPENDENT_INT64 long long
97 #define COMPILER_DEPENDENT_UINT64 unsigned long long
98 #define ACPI_USE_NATIVE_DIVIDE
99 #endif
100
101 #ifndef __cdecl
102 #define __cdecl
103 #endif
104
105 #endif /* __KERNEL__ */
106
107 /* Linux uses GCC */
108
109 #include "acgcc.h"
110
111
112 #ifdef __KERNEL__
113 #include <acpi/actypes.h>
114 /*
115 * Overrides for in-kernel ACPICA
116 */
acpi_os_get_thread_id(void)117 static inline acpi_thread_id acpi_os_get_thread_id(void)
118 {
119 return (acpi_thread_id)(unsigned long)current;
120 }
121
122 /*
123 * The irqs_disabled() check is for resume from RAM.
124 * Interrupts are off during resume, just like they are for boot.
125 * However, boot has (system_state != SYSTEM_RUNNING)
126 * to quiet __might_sleep() in kmalloc() and resume does not.
127 */
acpi_os_allocate(acpi_size size)128 static inline void *acpi_os_allocate(acpi_size size)
129 {
130 return kmalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
131 }
132
acpi_os_allocate_zeroed(acpi_size size)133 static inline void *acpi_os_allocate_zeroed(acpi_size size)
134 {
135 return kzalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
136 }
137
acpi_os_acquire_object(acpi_cache_t * cache)138 static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
139 {
140 return kmem_cache_zalloc(cache,
141 irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
142 }
143
144 #define ACPI_ALLOCATE(a) acpi_os_allocate(a)
145 #define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
146 #define ACPI_FREE(a) kfree(a)
147
148 #ifndef CONFIG_PREEMPT
149 /*
150 * Used within ACPICA to show where it is safe to preempt execution
151 * when CONFIG_PREEMPT=n
152 */
153 #define ACPI_PREEMPTION_POINT() \
154 do { \
155 if (!irqs_disabled()) \
156 cond_resched(); \
157 } while (0)
158 #endif
159
160 /*
161 * When lockdep is enabled, the spin_lock_init() macro stringifies it's
162 * argument and uses that as a name for the lock in debugging.
163 * By executing spin_lock_init() in a macro the key changes from "lock" for
164 * all locks to the name of the argument of acpi_os_create_lock(), which
165 * prevents lockdep from reporting false positives for ACPICA locks.
166 */
167 #define acpi_os_create_lock(__handle) \
168 ({ \
169 spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \
170 \
171 if (lock) { \
172 *(__handle) = lock; \
173 spin_lock_init(*(__handle)); \
174 } \
175 lock ? AE_OK : AE_NO_MEMORY; \
176 })
177
178 #endif /* __KERNEL__ */
179
180 #endif /* __ACLINUX_H__ */
181