drivers/acpi/acpica/acconfig.h

   1 /******************************************************************************
   2  *
   3  * Name: acconfig.h - Global configuration constants
   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 _ACCONFIG_H
  45 #define _ACCONFIG_H
  46
  47 /******************************************************************************
  48  *
  49  * Configuration options
  50  *
  51  *****************************************************************************/
  52
  53 /*
  54  * ACPI_DEBUG_OUTPUT    - This switch enables all the debug facilities of the
  55  *                        ACPI subsystem.  This includes the DEBUG_PRINT output
  56  *                        statements.  When disabled, all DEBUG_PRINT
  57  *                        statements are compiled out.
  58  *
  59  * ACPI_APPLICATION     - Use this switch if the subsystem is going to be run
  60  *                        at the application level.
  61  *
  62  */
  63
  64 /*
  65  * OS name, used for the _OS object.  The _OS object is essentially obsolete,
  66  * but there is a large base of ASL/AML code in existing machines that check
  67  * for the string below.  The use of this string usually guarantees that
  68  * the ASL will execute down the most tested code path.  Also, there is some
  69  * code that will not execute the _OSI method unless _OS matches the string
  70  * below.  Therefore, change this string at your own risk.
  71  */
  72 #define ACPI_OS_NAME                    "Microsoft Windows NT"
  73
  74 /* Maximum objects in the various object caches */
  75
  76 #define ACPI_MAX_STATE_CACHE_DEPTH      96      /* State objects */
  77 #define ACPI_MAX_PARSE_CACHE_DEPTH      96      /* Parse tree objects */
  78 #define ACPI_MAX_EXTPARSE_CACHE_DEPTH   96      /* Parse tree objects */
  79 #define ACPI_MAX_OBJECT_CACHE_DEPTH     96      /* Interpreter operand objects */
  80 #define ACPI_MAX_NAMESPACE_CACHE_DEPTH  96      /* Namespace objects */
  81
  82 /*
  83  * Should the subsystem abort the loading of an ACPI table if the
  84  * table checksum is incorrect?
  85  */
  86 #define ACPI_CHECKSUM_ABORT             FALSE
  87
  88 /******************************************************************************
  89  *
  90  * Subsystem Constants
  91  *
  92  *****************************************************************************/
  93
  94 /* Version of ACPI supported */
  95
  96 #define ACPI_CA_SUPPORT_LEVEL           3
  97
  98 /* Maximum count for a semaphore object */
  99
 100 #define ACPI_MAX_SEMAPHORE_COUNT        256
 101
 102 /* Maximum object reference count (detects object deletion issues) */
 103
 104 #define ACPI_MAX_REFERENCE_COUNT        0x1000
 105
 106 /* Default page size for use in mapping memory for operation regions */
 107
 108 #define ACPI_DEFAULT_PAGE_SIZE          4096    /* Must be power of 2 */
 109
 110 /* owner_id tracking. 8 entries allows for 255 owner_ids */
 111
 112 #define ACPI_NUM_OWNERID_MASKS          8
 113
 114 /* Size of the root table array is increased by this increment */
 115
 116 #define ACPI_ROOT_TABLE_SIZE_INCREMENT  4
 117
 118 /* Maximum number of While() loop iterations before forced abort */
 119
 120 #define ACPI_MAX_LOOP_ITERATIONS        0xFFFF
 121
 122 /* Maximum sleep allowed via Sleep() operator */
 123
 124 #define ACPI_MAX_SLEEP                  20000   /* Two seconds */
 125
 126 /******************************************************************************
 127  *
 128  * ACPI Specification constants (Do not change unless the specification changes)
 129  *
 130  *****************************************************************************/
 131
 132 /* Number of distinct GPE register blocks and register width */
 133
 134 #define ACPI_MAX_GPE_BLOCKS             2
 135 #define ACPI_GPE_REGISTER_WIDTH         8
 136
 137 /* Method info (in WALK_STATE), containing local variables and argumetns */
 138
 139 #define ACPI_METHOD_NUM_LOCALS          8
 140 #define ACPI_METHOD_MAX_LOCAL           7
 141
 142 #define ACPI_METHOD_NUM_ARGS            7
 143 #define ACPI_METHOD_MAX_ARG             6
 144
 145 /* Length of _HID, _UID, _CID, and UUID values */
 146
 147 #define ACPI_DEVICE_ID_LENGTH           0x09
 148 #define ACPI_MAX_CID_LENGTH             48
 149 #define ACPI_UUID_LENGTH                16
 150
 151 /*
 152  * Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG
 153  */
 154 #define ACPI_OBJ_NUM_OPERANDS           8
 155 #define ACPI_OBJ_MAX_OPERAND            7
 156
 157 /* Number of elements in the Result Stack frame, can be an arbitrary value */
 158
 159 #define ACPI_RESULTS_FRAME_OBJ_NUM      8
 160
 161 /*
 162  * Maximal number of elements the Result Stack can contain,
 163  * it may be an arbitray value not exceeding the types of
 164  * result_size and result_count (now u8).
 165  */
 166 #define ACPI_RESULTS_OBJ_NUM_MAX        255
 167
 168 /* Names within the namespace are 4 bytes long */
 169
 170 #define ACPI_NAME_SIZE                  4
 171 #define ACPI_PATH_SEGMENT_LENGTH        5       /* 4 chars for name + 1 char for separator */
 172 #define ACPI_PATH_SEPARATOR             '.'
 173
 174 /* Sizes for ACPI table headers */
 175
 176 #define ACPI_OEM_ID_SIZE                6
 177 #define ACPI_OEM_TABLE_ID_SIZE          8
 178
 179 /* Constants used in searching for the RSDP in low memory */
 180
 181 #define ACPI_EBDA_PTR_LOCATION          0x0000040E      /* Physical Address */
 182 #define ACPI_EBDA_PTR_LENGTH            2
 183 #define ACPI_EBDA_WINDOW_SIZE           1024
 184 #define ACPI_HI_RSDP_WINDOW_BASE        0x000E0000      /* Physical Address */
 185 #define ACPI_HI_RSDP_WINDOW_SIZE        0x00020000
 186 #define ACPI_RSDP_SCAN_STEP             16
 187
 188 /* Operation regions */
 189
 190 #define ACPI_USER_REGION_BEGIN          0x80
 191
 192 /* Maximum space_ids for Operation Regions */
 193
 194 #define ACPI_MAX_ADDRESS_SPACE          255
 195
 196 /* Array sizes.  Used for range checking also */
 197
 198 #define ACPI_MAX_MATCH_OPCODE           5
 199
 200 /* RSDP checksums */
 201
 202 #define ACPI_RSDP_CHECKSUM_LENGTH       20
 203 #define ACPI_RSDP_XCHECKSUM_LENGTH      36
 204
 205 /* SMBus and IPMI bidirectional buffer size */
 206
 207 #define ACPI_SMBUS_BUFFER_SIZE          34
 208 #define ACPI_IPMI_BUFFER_SIZE           66
 209
 210 /* _sx_d and _sx_w control methods */
 211
 212 #define ACPI_NUM_sx_d_METHODS           4
 213 #define ACPI_NUM_sx_w_METHODS           5
 214
 215 /******************************************************************************
 216  *
 217  * ACPI AML Debugger
 218  *
 219  *****************************************************************************/
 220
 221 #define ACPI_DEBUGGER_MAX_ARGS          8       /* Must be max method args + 1 */
 222
 223 #define ACPI_DEBUGGER_COMMAND_PROMPT    '-'
 224 #define ACPI_DEBUGGER_EXECUTE_PROMPT    '%'
 225
 226 #endif                          /* _ACCONFIG_H */