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 */ 116 static 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 */ 127 static inline void *acpi_os_allocate(acpi_size size) 128 { 129 return kmalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL); 130 } 131 132 static inline void *acpi_os_allocate_zeroed(acpi_size size) 133 { 134 return kzalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL); 135 } 136 137 static 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__ */ 180