include/acpi/acconfig.h
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     1 /******************************************************************************
       
     2  *
       
     3  * Name: acconfig.h - Global configuration constants
       
     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 _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 /* Current ACPICA subsystem version in YYYYMMDD format */
       
    65 
       
    66 #define ACPI_CA_VERSION                 0x20080926
       
    67 
       
    68 /*
       
    69  * OS name, used for the _OS object.  The _OS object is essentially obsolete,
       
    70  * but there is a large base of ASL/AML code in existing machines that check
       
    71  * for the string below.  The use of this string usually guarantees that
       
    72  * the ASL will execute down the most tested code path.  Also, there is some
       
    73  * code that will not execute the _OSI method unless _OS matches the string
       
    74  * below.  Therefore, change this string at your own risk.
       
    75  */
       
    76 #define ACPI_OS_NAME                    "Microsoft Windows NT"
       
    77 
       
    78 /* Maximum objects in the various object caches */
       
    79 
       
    80 #define ACPI_MAX_STATE_CACHE_DEPTH      96	/* State objects */
       
    81 #define ACPI_MAX_PARSE_CACHE_DEPTH      96	/* Parse tree objects */
       
    82 #define ACPI_MAX_EXTPARSE_CACHE_DEPTH   96	/* Parse tree objects */
       
    83 #define ACPI_MAX_OBJECT_CACHE_DEPTH     96	/* Interpreter operand objects */
       
    84 #define ACPI_MAX_NAMESPACE_CACHE_DEPTH  96	/* Namespace objects */
       
    85 
       
    86 /*
       
    87  * Should the subsystem abort the loading of an ACPI table if the
       
    88  * table checksum is incorrect?
       
    89  */
       
    90 #define ACPI_CHECKSUM_ABORT             FALSE
       
    91 
       
    92 /******************************************************************************
       
    93  *
       
    94  * Subsystem Constants
       
    95  *
       
    96  *****************************************************************************/
       
    97 
       
    98 /* Version of ACPI supported */
       
    99 
       
   100 #define ACPI_CA_SUPPORT_LEVEL           3
       
   101 
       
   102 /* Maximum count for a semaphore object */
       
   103 
       
   104 #define ACPI_MAX_SEMAPHORE_COUNT        256
       
   105 
       
   106 /* Maximum object reference count (detects object deletion issues) */
       
   107 
       
   108 #define ACPI_MAX_REFERENCE_COUNT        0x1000
       
   109 
       
   110 /* Size of cached memory mapping for system memory operation region */
       
   111 
       
   112 #define ACPI_SYSMEM_REGION_WINDOW_SIZE  4096
       
   113 
       
   114 /* owner_id tracking. 8 entries allows for 255 owner_ids */
       
   115 
       
   116 #define ACPI_NUM_OWNERID_MASKS          8
       
   117 
       
   118 /* Size of the root table array is increased by this increment */
       
   119 
       
   120 #define ACPI_ROOT_TABLE_SIZE_INCREMENT  4
       
   121 
       
   122 /******************************************************************************
       
   123  *
       
   124  * ACPI Specification constants (Do not change unless the specification changes)
       
   125  *
       
   126  *****************************************************************************/
       
   127 
       
   128 /* Number of distinct GPE register blocks and register width */
       
   129 
       
   130 #define ACPI_MAX_GPE_BLOCKS             2
       
   131 #define ACPI_GPE_REGISTER_WIDTH         8
       
   132 
       
   133 /* Method info (in WALK_STATE), containing local variables and argumetns */
       
   134 
       
   135 #define ACPI_METHOD_NUM_LOCALS          8
       
   136 #define ACPI_METHOD_MAX_LOCAL           7
       
   137 
       
   138 #define ACPI_METHOD_NUM_ARGS            7
       
   139 #define ACPI_METHOD_MAX_ARG             6
       
   140 
       
   141 /* Length of _HID, _UID, _CID, and UUID values */
       
   142 
       
   143 #define ACPI_DEVICE_ID_LENGTH           0x09
       
   144 #define ACPI_MAX_CID_LENGTH             48
       
   145 #define ACPI_UUID_LENGTH                16
       
   146 
       
   147 /*
       
   148  * Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG
       
   149  */
       
   150 #define ACPI_OBJ_NUM_OPERANDS           8
       
   151 #define ACPI_OBJ_MAX_OPERAND            7
       
   152 
       
   153 /* Number of elements in the Result Stack frame, can be an arbitrary value */
       
   154 
       
   155 #define ACPI_RESULTS_FRAME_OBJ_NUM      8
       
   156 
       
   157 /*
       
   158  * Maximal number of elements the Result Stack can contain,
       
   159  * it may be an arbitray value not exceeding the types of
       
   160  * result_size and result_count (now u8).
       
   161  */
       
   162 #define ACPI_RESULTS_OBJ_NUM_MAX        255
       
   163 
       
   164 /* Names within the namespace are 4 bytes long */
       
   165 
       
   166 #define ACPI_NAME_SIZE                  4
       
   167 #define ACPI_PATH_SEGMENT_LENGTH        5	/* 4 chars for name + 1 char for separator */
       
   168 #define ACPI_PATH_SEPARATOR             '.'
       
   169 
       
   170 /* Sizes for ACPI table headers */
       
   171 
       
   172 #define ACPI_OEM_ID_SIZE                6
       
   173 #define ACPI_OEM_TABLE_ID_SIZE          8
       
   174 
       
   175 /* Constants used in searching for the RSDP in low memory */
       
   176 
       
   177 #define ACPI_EBDA_PTR_LOCATION          0x0000040E	/* Physical Address */
       
   178 #define ACPI_EBDA_PTR_LENGTH            2
       
   179 #define ACPI_EBDA_WINDOW_SIZE           1024
       
   180 #define ACPI_HI_RSDP_WINDOW_BASE        0x000E0000	/* Physical Address */
       
   181 #define ACPI_HI_RSDP_WINDOW_SIZE        0x00020000
       
   182 #define ACPI_RSDP_SCAN_STEP             16
       
   183 
       
   184 /* Operation regions */
       
   185 
       
   186 #define ACPI_NUM_PREDEFINED_REGIONS     8
       
   187 #define ACPI_USER_REGION_BEGIN          0x80
       
   188 
       
   189 /* Maximum space_ids for Operation Regions */
       
   190 
       
   191 #define ACPI_MAX_ADDRESS_SPACE          255
       
   192 
       
   193 /* Array sizes.  Used for range checking also */
       
   194 
       
   195 #define ACPI_MAX_MATCH_OPCODE           5
       
   196 
       
   197 /* RSDP checksums */
       
   198 
       
   199 #define ACPI_RSDP_CHECKSUM_LENGTH       20
       
   200 #define ACPI_RSDP_XCHECKSUM_LENGTH      36
       
   201 
       
   202 /* SMBus bidirectional buffer size */
       
   203 
       
   204 #define ACPI_SMBUS_BUFFER_SIZE          34
       
   205 
       
   206 /******************************************************************************
       
   207  *
       
   208  * ACPI AML Debugger
       
   209  *
       
   210  *****************************************************************************/
       
   211 
       
   212 #define ACPI_DEBUGGER_MAX_ARGS          8	/* Must be max method args + 1 */
       
   213 
       
   214 #define ACPI_DEBUGGER_COMMAND_PROMPT    '-'
       
   215 #define ACPI_DEBUGGER_EXECUTE_PROMPT    '%'
       
   216 
       
   217 #endif				/* _ACCONFIG_H */