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 #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 /* Disable kernel specific declarators */ 87 88 #ifndef __init 89 #define __init 90 #endif 91 92 #ifndef __iomem 93 #define __iomem 94 #endif 95 96 /* Host-dependent types and defines for user-space ACPICA */ 97 98 #define ACPI_FLUSH_CPU_CACHE() 99 #define ACPI_CAST_PTHREAD_T(pthread) ((acpi_thread_id) (pthread)) 100 101 #if defined(__ia64__) || defined(__x86_64__) || defined(__aarch64__) 102 #define ACPI_MACHINE_WIDTH 64 103 #define COMPILER_DEPENDENT_INT64 long 104 #define COMPILER_DEPENDENT_UINT64 unsigned long 105 #else 106 #define ACPI_MACHINE_WIDTH 32 107 #define COMPILER_DEPENDENT_INT64 long long 108 #define COMPILER_DEPENDENT_UINT64 unsigned long long 109 #define ACPI_USE_NATIVE_DIVIDE 110 #endif 111 112 #ifndef __cdecl 113 #define __cdecl 114 #endif 115 116 #endif /* __KERNEL__ */ 117 118 /* Linux uses GCC */ 119 120 #include <acpi/platform/acgcc.h> 121 122 #ifdef __KERNEL__ 123 124 /* 125 * FIXME: Inclusion of actypes.h 126 * Linux kernel need this before defining inline OSL interfaces as 127 * actypes.h need to be included to find ACPICA type definitions. 128 * Since from ACPICA's perspective, the actypes.h should be included after 129 * acenv.h (aclinux.h), this leads to a inclusion mis-ordering issue. 130 */ 131 #include <acpi/actypes.h> 132 133 /* 134 * Overrides for in-kernel ACPICA 135 */ 136 acpi_status __init acpi_os_initialize(void); 137 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize 138 139 acpi_status acpi_os_terminate(void); 140 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate 141 142 /* 143 * Memory allocation/deallocation 144 */ 145 146 /* 147 * The irqs_disabled() check is for resume from RAM. 148 * Interrupts are off during resume, just like they are for boot. 149 * However, boot has (system_state != SYSTEM_RUNNING) 150 * to quiet __might_sleep() in kmalloc() and resume does not. 151 */ 152 static inline void *acpi_os_allocate(acpi_size size) 153 { 154 return kmalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); 155 } 156 157 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate 158 159 /* Use native linux version of acpi_os_allocate_zeroed */ 160 161 static inline void *acpi_os_allocate_zeroed(acpi_size size) 162 { 163 return kzalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); 164 } 165 166 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate_zeroed 167 #define USE_NATIVE_ALLOCATE_ZEROED 168 169 static inline void acpi_os_free(void *memory) 170 { 171 kfree(memory); 172 } 173 174 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_free 175 176 static inline void *acpi_os_acquire_object(acpi_cache_t * cache) 177 { 178 return kmem_cache_zalloc(cache, 179 irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); 180 } 181 182 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object 183 184 static inline acpi_thread_id acpi_os_get_thread_id(void) 185 { 186 return (acpi_thread_id) (unsigned long)current; 187 } 188 189 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id 190 191 #ifndef CONFIG_PREEMPT 192 193 /* 194 * Used within ACPICA to show where it is safe to preempt execution 195 * when CONFIG_PREEMPT=n 196 */ 197 #define ACPI_PREEMPTION_POINT() \ 198 do { \ 199 if (!irqs_disabled()) \ 200 cond_resched(); \ 201 } while (0) 202 203 #endif 204 205 /* 206 * When lockdep is enabled, the spin_lock_init() macro stringifies it's 207 * argument and uses that as a name for the lock in debugging. 208 * By executing spin_lock_init() in a macro the key changes from "lock" for 209 * all locks to the name of the argument of acpi_os_create_lock(), which 210 * prevents lockdep from reporting false positives for ACPICA locks. 211 */ 212 #define acpi_os_create_lock(__handle) \ 213 ({ \ 214 spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \ 215 if (lock) { \ 216 *(__handle) = lock; \ 217 spin_lock_init(*(__handle)); \ 218 } \ 219 lock ? AE_OK : AE_NO_MEMORY; \ 220 }) 221 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock 222 223 void __iomem *acpi_os_map_memory(acpi_physical_address where, acpi_size length); 224 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_map_memory 225 226 void acpi_os_unmap_memory(void __iomem * logical_address, acpi_size size); 227 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_unmap_memory 228 229 /* 230 * OSL interfaces used by debugger/disassembler 231 */ 232 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_readable 233 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_writable 234 235 /* 236 * OSL interfaces used by utilities 237 */ 238 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output 239 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line 240 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name 241 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index 242 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address 243 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_directory 244 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_next_filename 245 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_directory 246 247 /* 248 * OSL interfaces added by Linux 249 */ 250 void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size); 251 252 #endif /* __KERNEL__ */ 253 254 #endif /* __ACLINUX_H__ */ 255