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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#ifdef __KERNEL__
54
55#include <linux/string.h>
56#include <linux/kernel.h>
57#include <linux/ctype.h>
58#include <linux/sched.h>
59#include <linux/atomic.h>
60#include <linux/math64.h>
61#include <linux/slab.h>
62#include <linux/spinlock_types.h>
63#ifdef EXPORT_ACPI_INTERFACES
64#include <linux/export.h>
65#endif
66#include <asm/acpi.h>
67
68/* Host-dependent types and defines for in-kernel ACPICA */
69
70#define ACPI_MACHINE_WIDTH BITS_PER_LONG
71#define ACPI_EXPORT_SYMBOL(symbol) EXPORT_SYMBOL(symbol);
72#define strtoul simple_strtoul
73
74#define acpi_cache_t struct kmem_cache
75#define acpi_spinlock spinlock_t *
76#define acpi_cpu_flags unsigned long
77
78#else /* !__KERNEL__ */
79
80#include <stdarg.h>
81#include <string.h>
82#include <stdlib.h>
83#include <ctype.h>
84#include <unistd.h>
85
86/* Host-dependent types and defines for user-space ACPICA */
87
88#define ACPI_FLUSH_CPU_CACHE()
89#define ACPI_CAST_PTHREAD_T(pthread) ((acpi_thread_id) (pthread))
90
91#if defined(__ia64__) || defined(__x86_64__) || defined(__aarch64__)
92#define ACPI_MACHINE_WIDTH 64
93#define COMPILER_DEPENDENT_INT64 long
94#define COMPILER_DEPENDENT_UINT64 unsigned long
95#else
96#define ACPI_MACHINE_WIDTH 32
97#define COMPILER_DEPENDENT_INT64 long long
98#define COMPILER_DEPENDENT_UINT64 unsigned long long
99#define ACPI_USE_NATIVE_DIVIDE
100#endif
101
102#ifndef __cdecl
103#define __cdecl
104#endif
105
106#endif /* __KERNEL__ */
107
108/* Linux uses GCC */
109
110#include <acpi/platform/acgcc.h>
111
112#ifdef __KERNEL__
113
114/*
115 * FIXME: Inclusion of actypes.h
116 * Linux kernel need this before defining inline OSL interfaces as
117 * actypes.h need to be included to find ACPICA type definitions.
118 * Since from ACPICA's perspective, the actypes.h should be included after
119 * acenv.h (aclinux.h), this leads to a inclusion mis-ordering issue.
120 */
121#include <acpi/actypes.h>
122
123/*
124 * Overrides for in-kernel ACPICA
125 */
126acpi_status __init acpi_os_initialize(void);
127#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize
128
129acpi_status acpi_os_terminate(void);
130#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate
131
132/*
133 * Memory allocation/deallocation
134 */
135
136/*
137 * The irqs_disabled() check is for resume from RAM.
138 * Interrupts are off during resume, just like they are for boot.
139 * However, boot has (system_state != SYSTEM_RUNNING)
140 * to quiet __might_sleep() in kmalloc() and resume does not.
141 */
142static inline void *acpi_os_allocate(acpi_size size)
143{
144 return kmalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
145}
146
147#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate
148
149/* Use native linux version of acpi_os_allocate_zeroed */
150
151static inline void *acpi_os_allocate_zeroed(acpi_size size)
152{
153 return kzalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
154}
155
156#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate_zeroed
157#define USE_NATIVE_ALLOCATE_ZEROED
158
159static inline void acpi_os_free(void *memory)
160{
161 kfree(memory);
162}
163
164#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_free
165
166static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
167{
168 return kmem_cache_zalloc(cache,
169 irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
170}
171
172#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object
173
174static inline acpi_thread_id acpi_os_get_thread_id(void)
175{
176 return (acpi_thread_id) (unsigned long)current;
177}
178
179#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id
180
181#ifndef CONFIG_PREEMPT
182
183/*
184 * Used within ACPICA to show where it is safe to preempt execution
185 * when CONFIG_PREEMPT=n
186 */
187#define ACPI_PREEMPTION_POINT() \
188 do { \
189 if (!irqs_disabled()) \
190 cond_resched(); \
191 } while (0)
192
193#endif
194
195/*
196 * When lockdep is enabled, the spin_lock_init() macro stringifies it's
197 * argument and uses that as a name for the lock in debugging.
198 * By executing spin_lock_init() in a macro the key changes from "lock" for
199 * all locks to the name of the argument of acpi_os_create_lock(), which
200 * prevents lockdep from reporting false positives for ACPICA locks.
201 */
202#define acpi_os_create_lock(__handle) \
203 ({ \
204 spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \
205 if (lock) { \
206 *(__handle) = lock; \
207 spin_lock_init(*(__handle)); \
208 } \
209 lock ? AE_OK : AE_NO_MEMORY; \
210 })
211#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock
212
213void __iomem *acpi_os_map_memory(acpi_physical_address where, acpi_size length);
214#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_map_memory
215
216void acpi_os_unmap_memory(void __iomem * logical_address, acpi_size size);
217#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_unmap_memory
218
219/*
220 * OSL interfaces used by debugger/disassembler
221 */
222#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_readable
223#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_writable
224
225/*
226 * OSL interfaces used by utilities
227 */
228#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output
229#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line
230#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name
231#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index
232#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address
233#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_directory
234#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_next_filename
235#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_directory
236
237/*
238 * OSL interfaces added by Linux
239 */
240void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size);
241
242void acpi_os_gpe_count(u32 gpe_number);
243
244void acpi_os_fixed_event_count(u32 fixed_event_number);
245
246#endif /* __KERNEL__ */
247
248#endif /* __ACLINUX_H__ */