include/acpi/platform/aclinux.h

   1 /******************************************************************************
   2  *
   3  * Name: aclinux.h - OS specific defines, etc.
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2008, 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 #define ACPI_USE_SYSTEM_CLIBRARY
  48 #define ACPI_USE_DO_WHILE_0
  49 #define ACPI_MUTEX_TYPE             ACPI_BINARY_SEMAPHORE
  50
  51 #ifdef __KERNEL__
  52
  53 #include <linux/string.h>
  54 #include <linux/kernel.h>
  55 #include <linux/module.h>
  56 #include <linux/ctype.h>
  57 #include <linux/sched.h>
  58 #include <asm/system.h>
  59 #include <asm/atomic.h>
  60 #include <asm/div64.h>
  61 #include <asm/acpi.h>
  62 #include <linux/slab.h>
  63 #include <linux/spinlock_types.h>
  64 #include <asm/current.h>
  65
  66 /* Host-dependent types and defines */
  67
  68 #define ACPI_MACHINE_WIDTH          BITS_PER_LONG
  69 #define acpi_cache_t                        struct kmem_cache
  70 #define acpi_spinlock                   spinlock_t *
  71 #define ACPI_EXPORT_SYMBOL(symbol)  EXPORT_SYMBOL(symbol);
  72 #define strtoul                     simple_strtoul
  73
  74 #else                           /* !__KERNEL__ */
  75
  76 #include <stdarg.h>
  77 #include <string.h>
  78 #include <stdlib.h>
  79 #include <ctype.h>
  80 #include <unistd.h>
  81
  82 #if defined(__ia64__) || defined(__x86_64__)
  83 #define ACPI_MACHINE_WIDTH          64
  84 #define COMPILER_DEPENDENT_INT64    long
  85 #define COMPILER_DEPENDENT_UINT64   unsigned long
  86 #else
  87 #define ACPI_MACHINE_WIDTH          32
  88 #define COMPILER_DEPENDENT_INT64    long long
  89 #define COMPILER_DEPENDENT_UINT64   unsigned long long
  90 #define ACPI_USE_NATIVE_DIVIDE
  91 #endif
  92
  93 #ifndef __cdecl
  94 #define __cdecl
  95 #endif
  96
  97 #define ACPI_FLUSH_CPU_CACHE()
  98 #endif                          /* __KERNEL__ */
  99
 100 /* Linux uses GCC */
 101
 102 #include "acgcc.h"
 103
 104 #define acpi_cpu_flags unsigned long
 105
 106 #define acpi_thread_id struct task_struct *
 107
 108 static inline acpi_thread_id acpi_os_get_thread_id(void)
 109 {
 110         return current;
 111 }
 112
 113 /*
 114  * The irqs_disabled() check is for resume from RAM.
 115  * Interrupts are off during resume, just like they are for boot.
 116  * However, boot has  (system_state != SYSTEM_RUNNING)
 117  * to quiet __might_sleep() in kmalloc() and resume does not.
 118  */
 119 #include <acpi/actypes.h>
 120 static inline void *acpi_os_allocate(acpi_size size)
 121 {
 122         return kmalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
 123 }
 124 static inline void *acpi_os_allocate_zeroed(acpi_size size)
 125 {
 126         return kzalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
 127 }
 128
 129 static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
 130 {
 131         return kmem_cache_zalloc(cache,
 132                                  irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
 133 }
 134
 135 #define ACPI_ALLOCATE(a)        acpi_os_allocate(a)
 136 #define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
 137 #define ACPI_FREE(a)            kfree(a)
 138
 139 /*
 140  * We need to show where it is safe to preempt execution of ACPICA
 141  */
 142 #define ACPI_PREEMPTION_POINT()         \
 143         do {                            \
 144                 if (!irqs_disabled())   \
 145                         cond_resched(); \
 146         } while (0)
 147
 148 #endif                          /* __ACLINUX_H__ */