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d410ee5109
Ensure that memory mappings created for operation regions do not cross page boundaries. Crossing a page boundary while mapping regions can cause warnings if the pages have different attributes. Such regions are probably BIOS bugs, and this is the workaround. http://bugzilla.kernel.org/show_bug.cgi?id=14445 [Kernel summit hacking hour] Signed-off-by: Bob Moore <robert.moore@intel.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
224 lines
7.7 KiB
C
224 lines
7.7 KiB
C
/******************************************************************************
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*
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* Name: acconfig.h - Global configuration constants
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2008, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#ifndef _ACCONFIG_H
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#define _ACCONFIG_H
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/******************************************************************************
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*
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* Configuration options
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*
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*****************************************************************************/
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/*
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* ACPI_DEBUG_OUTPUT - This switch enables all the debug facilities of the
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* ACPI subsystem. This includes the DEBUG_PRINT output
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* statements. When disabled, all DEBUG_PRINT
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* statements are compiled out.
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*
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* ACPI_APPLICATION - Use this switch if the subsystem is going to be run
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* at the application level.
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*
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*/
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/*
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* OS name, used for the _OS object. The _OS object is essentially obsolete,
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* but there is a large base of ASL/AML code in existing machines that check
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* for the string below. The use of this string usually guarantees that
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* the ASL will execute down the most tested code path. Also, there is some
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* code that will not execute the _OSI method unless _OS matches the string
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* below. Therefore, change this string at your own risk.
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*/
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#define ACPI_OS_NAME "Microsoft Windows NT"
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/* Maximum objects in the various object caches */
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#define ACPI_MAX_STATE_CACHE_DEPTH 96 /* State objects */
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#define ACPI_MAX_PARSE_CACHE_DEPTH 96 /* Parse tree objects */
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#define ACPI_MAX_EXTPARSE_CACHE_DEPTH 96 /* Parse tree objects */
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#define ACPI_MAX_OBJECT_CACHE_DEPTH 96 /* Interpreter operand objects */
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#define ACPI_MAX_NAMESPACE_CACHE_DEPTH 96 /* Namespace objects */
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/*
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* Should the subsystem abort the loading of an ACPI table if the
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* table checksum is incorrect?
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*/
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#define ACPI_CHECKSUM_ABORT FALSE
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/******************************************************************************
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*
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* Subsystem Constants
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*
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*****************************************************************************/
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/* Version of ACPI supported */
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#define ACPI_CA_SUPPORT_LEVEL 3
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/* Maximum count for a semaphore object */
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#define ACPI_MAX_SEMAPHORE_COUNT 256
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/* Maximum object reference count (detects object deletion issues) */
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#define ACPI_MAX_REFERENCE_COUNT 0x1000
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/* Default page size for use in mapping memory for operation regions */
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#define ACPI_DEFAULT_PAGE_SIZE 4096 /* Must be power of 2 */
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/* owner_id tracking. 8 entries allows for 255 owner_ids */
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#define ACPI_NUM_OWNERID_MASKS 8
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/* Size of the root table array is increased by this increment */
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#define ACPI_ROOT_TABLE_SIZE_INCREMENT 4
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/* Maximum number of While() loop iterations before forced abort */
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#define ACPI_MAX_LOOP_ITERATIONS 0xFFFF
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/******************************************************************************
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*
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* ACPI Specification constants (Do not change unless the specification changes)
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*
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*****************************************************************************/
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/* Number of distinct GPE register blocks and register width */
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#define ACPI_MAX_GPE_BLOCKS 2
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#define ACPI_GPE_REGISTER_WIDTH 8
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/* Method info (in WALK_STATE), containing local variables and argumetns */
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#define ACPI_METHOD_NUM_LOCALS 8
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#define ACPI_METHOD_MAX_LOCAL 7
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#define ACPI_METHOD_NUM_ARGS 7
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#define ACPI_METHOD_MAX_ARG 6
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/* Length of _HID, _UID, _CID, and UUID values */
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#define ACPI_DEVICE_ID_LENGTH 0x09
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#define ACPI_MAX_CID_LENGTH 48
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#define ACPI_UUID_LENGTH 16
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/*
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* Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG
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*/
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#define ACPI_OBJ_NUM_OPERANDS 8
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#define ACPI_OBJ_MAX_OPERAND 7
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/* Number of elements in the Result Stack frame, can be an arbitrary value */
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#define ACPI_RESULTS_FRAME_OBJ_NUM 8
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/*
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* Maximal number of elements the Result Stack can contain,
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* it may be an arbitray value not exceeding the types of
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* result_size and result_count (now u8).
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*/
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#define ACPI_RESULTS_OBJ_NUM_MAX 255
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/* Names within the namespace are 4 bytes long */
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#define ACPI_NAME_SIZE 4
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#define ACPI_PATH_SEGMENT_LENGTH 5 /* 4 chars for name + 1 char for separator */
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#define ACPI_PATH_SEPARATOR '.'
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/* Sizes for ACPI table headers */
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#define ACPI_OEM_ID_SIZE 6
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#define ACPI_OEM_TABLE_ID_SIZE 8
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/* Constants used in searching for the RSDP in low memory */
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#define ACPI_EBDA_PTR_LOCATION 0x0000040E /* Physical Address */
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#define ACPI_EBDA_PTR_LENGTH 2
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#define ACPI_EBDA_WINDOW_SIZE 1024
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#define ACPI_HI_RSDP_WINDOW_BASE 0x000E0000 /* Physical Address */
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#define ACPI_HI_RSDP_WINDOW_SIZE 0x00020000
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#define ACPI_RSDP_SCAN_STEP 16
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/* Operation regions */
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#define ACPI_NUM_PREDEFINED_REGIONS 9
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#define ACPI_USER_REGION_BEGIN 0x80
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/* Maximum space_ids for Operation Regions */
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#define ACPI_MAX_ADDRESS_SPACE 255
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/* Array sizes. Used for range checking also */
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#define ACPI_MAX_MATCH_OPCODE 5
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/* RSDP checksums */
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#define ACPI_RSDP_CHECKSUM_LENGTH 20
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#define ACPI_RSDP_XCHECKSUM_LENGTH 36
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/* SMBus and IPMI bidirectional buffer size */
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#define ACPI_SMBUS_BUFFER_SIZE 34
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#define ACPI_IPMI_BUFFER_SIZE 66
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/* _sx_d and _sx_w control methods */
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#define ACPI_NUM_sx_d_METHODS 4
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#define ACPI_NUM_sx_w_METHODS 5
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/******************************************************************************
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*
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* ACPI AML Debugger
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*
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*****************************************************************************/
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#define ACPI_DEBUGGER_MAX_ARGS 8 /* Must be max method args + 1 */
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#define ACPI_DEBUGGER_COMMAND_PROMPT '-'
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#define ACPI_DEBUGGER_EXECUTE_PROMPT '%'
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#endif /* _ACCONFIG_H */
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