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 #define ACPI_USE_SYSTEM_INTTYPES 56 57 /* Compile for reduced hardware mode only with this kernel config */ 58 59 #ifdef CONFIG_ACPI_REDUCED_HARDWARE_ONLY 60 #define ACPI_REDUCED_HARDWARE 1 61 #endif 62 63 #include <linux/string.h> 64 #include <linux/kernel.h> 65 #include <linux/ctype.h> 66 #include <linux/sched.h> 67 #include <linux/atomic.h> 68 #include <linux/math64.h> 69 #include <linux/slab.h> 70 #include <linux/spinlock_types.h> 71 #ifdef EXPORT_ACPI_INTERFACES 72 #include <linux/export.h> 73 #endif 74 #include <asm/acpi.h> 75 76 /* Host-dependent types and defines for in-kernel ACPICA */ 77 78 #define ACPI_MACHINE_WIDTH BITS_PER_LONG 79 #define ACPI_EXPORT_SYMBOL(symbol) EXPORT_SYMBOL(symbol); 80 #define strtoul simple_strtoul 81 82 #define acpi_cache_t struct kmem_cache 83 #define acpi_spinlock spinlock_t * 84 #define acpi_cpu_flags unsigned long 85 86 #else /* !__KERNEL__ */ 87 88 #include <stdarg.h> 89 #include <string.h> 90 #include <stdlib.h> 91 #include <ctype.h> 92 #include <unistd.h> 93 94 /* Disable kernel specific declarators */ 95 96 #ifndef __init 97 #define __init 98 #endif 99 100 #ifndef __iomem 101 #define __iomem 102 #endif 103 104 /* Host-dependent types and defines for user-space ACPICA */ 105 106 #define ACPI_FLUSH_CPU_CACHE() 107 #define ACPI_CAST_PTHREAD_T(pthread) ((acpi_thread_id) (pthread)) 108 109 #if defined(__ia64__) || defined(__x86_64__) || defined(__aarch64__) 110 #define ACPI_MACHINE_WIDTH 64 111 #define COMPILER_DEPENDENT_INT64 long 112 #define COMPILER_DEPENDENT_UINT64 unsigned long 113 #else 114 #define ACPI_MACHINE_WIDTH 32 115 #define COMPILER_DEPENDENT_INT64 long long 116 #define COMPILER_DEPENDENT_UINT64 unsigned long long 117 #define ACPI_USE_NATIVE_DIVIDE 118 #endif 119 120 #ifndef __cdecl 121 #define __cdecl 122 #endif 123 124 #endif /* __KERNEL__ */ 125 126 /* Linux uses GCC */ 127 128 #include <acpi/platform/acgcc.h> 129 130 #ifdef __KERNEL__ 131 132 /* 133 * FIXME: Inclusion of actypes.h 134 * Linux kernel need this before defining inline OSL interfaces as 135 * actypes.h need to be included to find ACPICA type definitions. 136 * Since from ACPICA's perspective, the actypes.h should be included after 137 * acenv.h (aclinux.h), this leads to a inclusion mis-ordering issue. 138 */ 139 #include <acpi/actypes.h> 140 141 /* 142 * Overrides for in-kernel ACPICA 143 */ 144 acpi_status __init acpi_os_initialize(void); 145 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize 146 147 acpi_status acpi_os_terminate(void); 148 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate 149 150 /* 151 * Memory allocation/deallocation 152 */ 153 154 /* 155 * The irqs_disabled() check is for resume from RAM. 156 * Interrupts are off during resume, just like they are for boot. 157 * However, boot has (system_state != SYSTEM_RUNNING) 158 * to quiet __might_sleep() in kmalloc() and resume does not. 159 */ 160 static inline void *acpi_os_allocate(acpi_size size) 161 { 162 return kmalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); 163 } 164 165 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate 166 167 /* Use native linux version of acpi_os_allocate_zeroed */ 168 169 static inline void *acpi_os_allocate_zeroed(acpi_size size) 170 { 171 return kzalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); 172 } 173 174 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate_zeroed 175 #define USE_NATIVE_ALLOCATE_ZEROED 176 177 static inline void acpi_os_free(void *memory) 178 { 179 kfree(memory); 180 } 181 182 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_free 183 184 static inline void *acpi_os_acquire_object(acpi_cache_t * cache) 185 { 186 return kmem_cache_zalloc(cache, 187 irqs_disabled()? GFP_ATOMIC : GFP_KERNEL); 188 } 189 190 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object 191 192 static inline acpi_thread_id acpi_os_get_thread_id(void) 193 { 194 return (acpi_thread_id) (unsigned long)current; 195 } 196 197 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id 198 199 #ifndef CONFIG_PREEMPT 200 201 /* 202 * Used within ACPICA to show where it is safe to preempt execution 203 * when CONFIG_PREEMPT=n 204 */ 205 #define ACPI_PREEMPTION_POINT() \ 206 do { \ 207 if (!irqs_disabled()) \ 208 cond_resched(); \ 209 } while (0) 210 211 #endif 212 213 /* 214 * When lockdep is enabled, the spin_lock_init() macro stringifies it's 215 * argument and uses that as a name for the lock in debugging. 216 * By executing spin_lock_init() in a macro the key changes from "lock" for 217 * all locks to the name of the argument of acpi_os_create_lock(), which 218 * prevents lockdep from reporting false positives for ACPICA locks. 219 */ 220 #define acpi_os_create_lock(__handle) \ 221 ({ \ 222 spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \ 223 if (lock) { \ 224 *(__handle) = lock; \ 225 spin_lock_init(*(__handle)); \ 226 } \ 227 lock ? AE_OK : AE_NO_MEMORY; \ 228 }) 229 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock 230 231 void __iomem *acpi_os_map_memory(acpi_physical_address where, acpi_size length); 232 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_map_memory 233 234 void acpi_os_unmap_memory(void __iomem * logical_address, acpi_size size); 235 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_unmap_memory 236 237 /* 238 * OSL interfaces used by debugger/disassembler 239 */ 240 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_readable 241 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_writable 242 243 /* 244 * OSL interfaces used by utilities 245 */ 246 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output 247 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line 248 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name 249 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index 250 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address 251 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_directory 252 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_next_filename 253 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_directory 254 255 /* 256 * OSL interfaces added by Linux 257 */ 258 void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size); 259 260 #endif /* __KERNEL__ */ 261 262 #endif /* __ACLINUX_H__ */ 263