Linux kernel mirror (for testing)
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linux
1/******************************************************************************
2 *
3 * Name: aclinux.h - OS specific defines, etc. for Linux
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2013, 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 <acpi/platform/acgcc.h>
110
111#ifdef __KERNEL__
112#include <acpi/actypes.h>
113/*
114 * Overrides for in-kernel ACPICA
115 */
116static inline acpi_thread_id acpi_os_get_thread_id(void)
117{
118 return (acpi_thread_id)(unsigned long)current;
119}
120
121/*
122 * The irqs_disabled() check is for resume from RAM.
123 * Interrupts are off during resume, just like they are for boot.
124 * However, boot has (system_state != SYSTEM_RUNNING)
125 * to quiet __might_sleep() in kmalloc() and resume does not.
126 */
127static inline void *acpi_os_allocate(acpi_size size)
128{
129 return kmalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
130}
131
132static inline void *acpi_os_allocate_zeroed(acpi_size size)
133{
134 return kzalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
135}
136
137static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
138{
139 return kmem_cache_zalloc(cache,
140 irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
141}
142
143#define ACPI_ALLOCATE(a) acpi_os_allocate(a)
144#define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
145#define ACPI_FREE(a) kfree(a)
146
147#ifndef CONFIG_PREEMPT
148/*
149 * Used within ACPICA to show where it is safe to preempt execution
150 * when CONFIG_PREEMPT=n
151 */
152#define ACPI_PREEMPTION_POINT() \
153 do { \
154 if (!irqs_disabled()) \
155 cond_resched(); \
156 } while (0)
157#endif
158
159/*
160 * When lockdep is enabled, the spin_lock_init() macro stringifies it's
161 * argument and uses that as a name for the lock in debugging.
162 * By executing spin_lock_init() in a macro the key changes from "lock" for
163 * all locks to the name of the argument of acpi_os_create_lock(), which
164 * prevents lockdep from reporting false positives for ACPICA locks.
165 */
166#define acpi_os_create_lock(__handle) \
167({ \
168 spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \
169 \
170 if (lock) { \
171 *(__handle) = lock; \
172 spin_lock_init(*(__handle)); \
173 } \
174 lock ? AE_OK : AE_NO_MEMORY; \
175})
176
177#endif /* __KERNEL__ */
178
179#endif /* __ACLINUX_H__ */