1 /******************************************************************************
2 *
3 * Name: aclinux.h - OS specific defines, etc. for Linux
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2014, 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 <linux/math64.h>
62 #include <linux/slab.h>
63 #include <linux/spinlock_types.h>
64 #ifdef EXPORT_ACPI_INTERFACES
65 #include <linux/export.h>
66 #endif
67 #include <asm/acpi.h>
68
69 /* Host-dependent types and defines for in-kernel ACPICA */
70
71 #define ACPI_MACHINE_WIDTH BITS_PER_LONG
72 #define ACPI_EXPORT_SYMBOL(symbol) EXPORT_SYMBOL(symbol);
73 #define strtoul simple_strtoul
74
75 #define ACPI_CACHE_T struct kmem_cache
76 #define ACPI_SPINLOCK spinlock_t *
77 #define ACPI_CPU_FLAGS unsigned long
78
79 #else /* !__KERNEL__ */
80
81 #include <stdarg.h>
82 #include <string.h>
83 #include <stdlib.h>
84 #include <ctype.h>
85 #include <unistd.h>
86
87 /* Host-dependent types and defines for user-space ACPICA */
88
89 #define ACPI_FLUSH_CPU_CACHE()
90 #define ACPI_CAST_PTHREAD_T(Pthread) ((ACPI_THREAD_ID) (Pthread))
91
92 #if defined(__ia64__) || defined(__x86_64__) || defined(__aarch64__)
93 #define ACPI_MACHINE_WIDTH 64
94 #define COMPILER_DEPENDENT_INT64 long
95 #define COMPILER_DEPENDENT_UINT64 unsigned long
96 #else
97 #define ACPI_MACHINE_WIDTH 32
98 #define COMPILER_DEPENDENT_INT64 long long
99 #define COMPILER_DEPENDENT_UINT64 unsigned long long
100 #define ACPI_USE_NATIVE_DIVIDE
101 #endif
102
103 #ifndef __cdecl
104 #define __cdecl
105 #endif
106
107 #endif /* __KERNEL__ */
108
109 /* Linux uses GCC */
110
111 #include "acgcc.h"
112
113
114 #ifdef __KERNEL__
115
116 /*
117 * FIXME: Inclusion of actypes.h
118 * Linux kernel need this before defining inline OSL interfaces as
119 * actypes.h need to be included to find ACPICA type definitions.
120 * Since from ACPICA's perspective, the actypes.h should be included after
121 * acenv.h (aclinux.h), this leads to a inclusion mis-ordering issue.
122 */
123 #include <acpi/actypes.h>
124
125 /*
126 * Overrides for in-kernel ACPICA
127 */
128 ACPI_STATUS __init AcpiOsInitialize (
129 void);
130 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsInitialize
131
132 ACPI_STATUS AcpiOsTerminate (
133 void);
134 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsTerminate
135
136 /*
137 * Memory allocation/deallocation
138 */
139
140 /*
141 * The irqs_disabled() check is for resume from RAM.
142 * Interrupts are off during resume, just like they are for boot.
143 * However, boot has (system_state != SYSTEM_RUNNING)
144 * to quiet __might_sleep() in kmalloc() and resume does not.
145 */
146 static inline void *
147 AcpiOsAllocate (
148 ACPI_SIZE Size)
149 {
150 return kmalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
151 }
152 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsAllocate
153
154 /* Use native linux version of AcpiOsAllocateZeroed */
155
156 static inline void *
157 AcpiOsAllocateZeroed (
158 ACPI_SIZE Size)
159 {
160 return kzalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
161 }
162 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsAllocateZeroed
163 #define USE_NATIVE_ALLOCATE_ZEROED
164
165 static inline void
166 AcpiOsFree (
167 void *Memory)
168 {
169 kfree (Memory);
170 }
171 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsFree
172
173 static inline void *
174 AcpiOsAcquireObject (
175 ACPI_CACHE_T *Cache)
176 {
177 return kmem_cache_zalloc (Cache,
178 irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
179 }
180 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsAcquireObject
181
182 static inline ACPI_THREAD_ID
183 AcpiOsGetThreadId (
184 void)
185 {
186 return (ACPI_THREAD_ID) (unsigned long) current;
187 }
188 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetThreadId
189
190 #ifndef CONFIG_PREEMPT
191
192 /*
193 * Used within ACPICA to show where it is safe to preempt execution
194 * when CONFIG_PREEMPT=n
195 */
196 #define ACPI_PREEMPTION_POINT() \
197 do { \
198 if (!irqs_disabled()) \
199 cond_resched(); \
200 } while (0)
201
202 #endif
203
204 /*
205 * When lockdep is enabled, the spin_lock_init() macro stringifies it's
206 * argument and uses that as a name for the lock in debugging.
207 * By executing spin_lock_init() in a macro the key changes from "lock" for
208 * all locks to the name of the argument of acpi_os_create_lock(), which
209 * prevents lockdep from reporting false positives for ACPICA locks.
210 */
211 #define AcpiOsCreateLock(__Handle) \
212 ({ \
213 spinlock_t *Lock = ACPI_ALLOCATE(sizeof(*Lock)); \
214 if (Lock) { \
215 *(__Handle) = Lock; \
216 spin_lock_init(*(__Handle)); \
217 } \
218 Lock ? AE_OK : AE_NO_MEMORY; \
219 })
220 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsCreateLock
221
222 void __iomem *
223 AcpiOsMapMemory (
224 ACPI_PHYSICAL_ADDRESS Where,
225 ACPI_SIZE Length);
226 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsMapMemory
227
228 void
229 AcpiOsUnmapMemory (
230 void __iomem *LogicalAddress,
231 ACPI_SIZE Size);
232 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsUnmapMemory
233
234 /*
235 * OSL interfaces used by debugger/disassembler
236 */
237 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsReadable
238 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsWritable
239
240 /*
241 * OSL interfaces used by utilities
242 */
243 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsRedirectOutput
244 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetLine
245 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetTableByName
246 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetTableByIndex
247 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetTableByAddress
248 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsOpenDirectory
249 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetNextFilename
250 #define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsCloseDirectory
251
252 /*
253 * OSL interfaces added by Linux
254 */
255 void
256 EarlyAcpiOsUnmapMemory (
257 void __iomem *Virt,
258 ACPI_SIZE Size);
259
260 #endif /* __KERNEL__ */
261
262 #endif /* __ACLINUX_H__ */