LXR linux/include/acpi/platform/aclinux.h

   1/******************************************************************************
   2 *
   3 * Name: aclinux.h - OS specific defines, etc. for Linux
   4 *
   5 *****************************************************************************/
   6
   7/*
   8 * Copyright (C) 2000 - 2009, 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/module.h>
  59#include <linux/ctype.h>
  60#include <linux/sched.h>
  61#include <asm/system.h>
  62#include <asm/atomic.h>
  63#include <asm/div64.h>
  64#include <asm/acpi.h>
  65#include <linux/slab.h>
  66#include <linux/spinlock_types.h>
  67#include <asm/current.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#define acpi_thread_id                      struct task_struct *
  79
  80#else /* !__KERNEL__ */
  81
  82#include <stdarg.h>
  83#include <string.h>
  84#include <stdlib.h>
  85#include <ctype.h>
  86#include <unistd.h>
  87
  88/* Host-dependent types and defines for user-space ACPICA */
  89
  90#define ACPI_FLUSH_CPU_CACHE()
  91#define acpi_thread_id                      pthread_t
  92
  93#if defined(__ia64__) || defined(__x86_64__)
  94#define ACPI_MACHINE_WIDTH          64
  95#define COMPILER_DEPENDENT_INT64    long
  96#define COMPILER_DEPENDENT_UINT64   unsigned long
  97#else
  98#define ACPI_MACHINE_WIDTH          32
  99#define COMPILER_DEPENDENT_INT64    long long
 100#define COMPILER_DEPENDENT_UINT64   unsigned long long
 101#define ACPI_USE_NATIVE_DIVIDE
 102#endif
 103
 104#ifndef __cdecl
 105#define __cdecl
 106#endif
 107
 108#endif /* __KERNEL__ */
 109
 110/* Linux uses GCC */
 111
 112#include "acgcc.h"
 113
 114
 115#ifdef __KERNEL__
 116/*
 117 * Overrides for in-kernel ACPICA
 118 */
 119static inline acpi_thread_id acpi_os_get_thread_id(void)
 120{
 121        return current;
 122}
 123
 124/*
 125 * The irqs_disabled() check is for resume from RAM.
 126 * Interrupts are off during resume, just like they are for boot.
 127 * However, boot has  (system_state != SYSTEM_RUNNING)
 128 * to quiet __might_sleep() in kmalloc() and resume does not.
 129 */
 130#include <acpi/actypes.h>
 131static inline void *acpi_os_allocate(acpi_size size)
 132{
 133        return kmalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
 134}
 135
 136static inline void *acpi_os_allocate_zeroed(acpi_size size)
 137{
 138        return kzalloc(size, irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
 139}
 140
 141static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
 142{
 143        return kmem_cache_zalloc(cache,
 144                irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
 145}
 146
 147#define ACPI_ALLOCATE(a)        acpi_os_allocate(a)
 148#define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
 149#define ACPI_FREE(a)            kfree(a)
 150
 151/* Used within ACPICA to show where it is safe to preempt execution */
 152#include <linux/hardirq.h>
 153#define ACPI_PREEMPTION_POINT() \
 154        do { \
 155                if (!in_atomic_preempt_off()) \
 156                        cond_resched(); \
 157        } while (0)
 158
 159#endif /* __KERNEL__ */
 160
 161#endif /* __ACLINUX_H__ */
 162