1/****************************************************************************** 2 * 3 * Name: aclinux.h - OS specific defines, etc. for Linux 4 * 5 *****************************************************************************/ 6 7/* 8 * Copyright (C) 2000 - 2011, 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 <asm/system.h> 61#include <linux/atomic.h> 62#include <asm/div64.h> 63#include <asm/acpi.h> 64#include <linux/slab.h> 65#include <linux/spinlock_types.h> 66#include <asm/current.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__) 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 "acgcc.h" 111 112 113#ifdef __KERNEL__ 114#include <acpi/actypes.h> 115/* 116 * Overrides for in-kernel ACPICA 117 */ 118static inline acpi_thread_id acpi_os_get_thread_id(void) 119{ 120 return (acpi_thread_id)(unsigned long)current; 121} 122 123/* 124 * The irqs_disabled() check is for resume from RAM. 125 * Interrupts are off during resume, just like they are for boot. 126 * However, boot has (system_state != SYSTEM_RUNNING) 127 * to quiet __might_sleep() in kmalloc() and resume does not. 128 */ 129static inline void *acpi_os_allocate(acpi_size size) 130{ 131 return kmalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL); 132} 133 134static inline void *acpi_os_allocate_zeroed(acpi_size size) 135{ 136 return kzalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL); 137} 138 139static inline void *acpi_os_acquire_object(acpi_cache_t * cache) 140{ 141 return kmem_cache_zalloc(cache, 142 irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL); 143} 144 145#define ACPI_ALLOCATE(a) acpi_os_allocate(a) 146#define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a) 147#define ACPI_FREE(a) kfree(a) 148 149#ifndef CONFIG_PREEMPT 150/* 151 * Used within ACPICA to show where it is safe to preempt execution 152 * when CONFIG_PREEMPT=n 153 */ 154#define ACPI_PREEMPTION_POINT() \ 155 do { \ 156 if (!irqs_disabled()) \ 157 cond_resched(); \ 158 } while (0) 159#endif 160 161/* 162 * When lockdep is enabled, the spin_lock_init() macro stringifies it's 163 * argument and uses that as a name for the lock in debugging. 164 * By executing spin_lock_init() in a macro the key changes from "lock" for 165 * all locks to the name of the argument of acpi_os_create_lock(), which 166 * prevents lockdep from reporting false positives for ACPICA locks. 167 */ 168#define acpi_os_create_lock(__handle) \ 169({ \ 170 spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \ 171 \ 172 if (lock) { \ 173 *(__handle) = lock; \ 174 spin_lock_init(*(__handle)); \ 175 } \ 176 lock ? AE_OK : AE_NO_MEMORY; \ 177}) 178 179#endif /* __KERNEL__ */ 180 181#endif /* __ACLINUX_H__ */ 182