467 lines
15 KiB
C
467 lines
15 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: exutils - interpreter/scanner utilities
|
|
* $Revision: 109 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2003, Intel Corp.
|
|
* All rights reserved.
|
|
*
|
|
* 2. License
|
|
*
|
|
* 2.1. This is your license from Intel Corp. under its intellectual property
|
|
* rights. You may have additional license terms from the party that provided
|
|
* you this software, covering your right to use that party's intellectual
|
|
* property rights.
|
|
*
|
|
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
|
|
* copy of the source code appearing in this file ("Covered Code") an
|
|
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
|
|
* base code distributed originally by Intel ("Original Intel Code") to copy,
|
|
* make derivatives, distribute, use and display any portion of the Covered
|
|
* Code in any form, with the right to sublicense such rights; and
|
|
*
|
|
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
|
|
* license (with the right to sublicense), under only those claims of Intel
|
|
* patents that are infringed by the Original Intel Code, to make, use, sell,
|
|
* offer to sell, and import the Covered Code and derivative works thereof
|
|
* solely to the minimum extent necessary to exercise the above copyright
|
|
* license, and in no event shall the patent license extend to any additions
|
|
* to or modifications of the Original Intel Code. No other license or right
|
|
* is granted directly or by implication, estoppel or otherwise;
|
|
*
|
|
* The above copyright and patent license is granted only if the following
|
|
* conditions are met:
|
|
*
|
|
* 3. Conditions
|
|
*
|
|
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial portion of the Covered
|
|
* Code or modification with rights to further distribute source must include
|
|
* the above Copyright Notice, the above License, this list of Conditions,
|
|
* and the following Disclaimer and Export Compliance provision. In addition,
|
|
* Licensee must cause all Covered Code to which Licensee contributes to
|
|
* contain a file documenting the changes Licensee made to create that Covered
|
|
* Code and the date of any change. Licensee must include in that file the
|
|
* documentation of any changes made by any predecessor Licensee. Licensee
|
|
* must include a prominent statement that the modification is derived,
|
|
* directly or indirectly, from Original Intel Code.
|
|
*
|
|
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial portion of the Covered
|
|
* Code or modification without rights to further distribute source must
|
|
* include the following Disclaimer and Export Compliance provision in the
|
|
* documentation and/or other materials provided with distribution. In
|
|
* addition, Licensee may not authorize further sublicense of source of any
|
|
* portion of the Covered Code, and must include terms to the effect that the
|
|
* license from Licensee to its licensee is limited to the intellectual
|
|
* property embodied in the software Licensee provides to its licensee, and
|
|
* not to intellectual property embodied in modifications its licensee may
|
|
* make.
|
|
*
|
|
* 3.3. Redistribution of Executable. Redistribution in executable form of any
|
|
* substantial portion of the Covered Code or modification must reproduce the
|
|
* above Copyright Notice, and the following Disclaimer and Export Compliance
|
|
* provision in the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3.4. Intel retains all right, title, and interest in and to the Original
|
|
* Intel Code.
|
|
*
|
|
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
|
|
* Intel shall be used in advertising or otherwise to promote the sale, use or
|
|
* other dealings in products derived from or relating to the Covered Code
|
|
* without prior written authorization from Intel.
|
|
*
|
|
* 4. Disclaimer and Export Compliance
|
|
*
|
|
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
|
|
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
|
|
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
|
|
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
|
|
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE.
|
|
*
|
|
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
|
|
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
|
|
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
|
|
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
|
|
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
|
|
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
|
|
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
|
|
* LIMITED REMEDY.
|
|
*
|
|
* 4.3. Licensee shall not export, either directly or indirectly, any of this
|
|
* software or system incorporating such software without first obtaining any
|
|
* required license or other approval from the U. S. Department of Commerce or
|
|
* any other agency or department of the United States Government. In the
|
|
* event Licensee exports any such software from the United States or
|
|
* re-exports any such software from a foreign destination, Licensee shall
|
|
* ensure that the distribution and export/re-export of the software is in
|
|
* compliance with all laws, regulations, orders, or other restrictions of the
|
|
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
|
|
* any of its subsidiaries will export/re-export any technical data, process,
|
|
* software, or service, directly or indirectly, to any country for which the
|
|
* United States government or any agency thereof requires an export license,
|
|
* other governmental approval, or letter of assurance, without first obtaining
|
|
* such license, approval or letter.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#define __EXUTILS_C__
|
|
|
|
/*
|
|
* DEFINE_AML_GLOBALS is tested in amlcode.h
|
|
* to determine whether certain global names should be "defined" or only
|
|
* "declared" in the current compilation. This enhances maintainability
|
|
* by enabling a single header file to embody all knowledge of the names
|
|
* in question.
|
|
*
|
|
* Exactly one module of any executable should #define DEFINE_GLOBALS
|
|
* before #including the header files which use this convention. The
|
|
* names in question will be defined and initialized in that module,
|
|
* and declared as extern in all other modules which #include those
|
|
* header files.
|
|
*/
|
|
|
|
#define DEFINE_AML_GLOBALS
|
|
|
|
#include "acpi.h"
|
|
#include "acinterp.h"
|
|
#include "amlcode.h"
|
|
#include "acevents.h"
|
|
|
|
#define _COMPONENT ACPI_EXECUTER
|
|
ACPI_MODULE_NAME ("exutils")
|
|
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExEnterInterpreter
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* DESCRIPTION: Enter the interpreter execution region. Failure to enter
|
|
* the interpreter region is a fatal system error
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiExEnterInterpreter (void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
ACPI_FUNCTION_TRACE ("ExEnterInterpreter");
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EXECUTE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("Could not acquire interpreter mutex\n"));
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExExitInterpreter
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* DESCRIPTION: Exit the interpreter execution region
|
|
*
|
|
* Cases where the interpreter is unlocked:
|
|
* 1) Completion of the execution of a control method
|
|
* 2) Method blocked on a Sleep() AML opcode
|
|
* 3) Method blocked on an Acquire() AML opcode
|
|
* 4) Method blocked on a Wait() AML opcode
|
|
* 5) Method blocked to acquire the global lock
|
|
* 6) Method blocked to execute a serialized control method that is
|
|
* already executing
|
|
* 7) About to invoke a user-installed opregion handler
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiExExitInterpreter (void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ExExitInterpreter");
|
|
|
|
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_EXECUTE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("Could not release interpreter mutex\n"));
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExTruncateFor32bitTable
|
|
*
|
|
* PARAMETERS: ObjDesc - Object to be truncated
|
|
*
|
|
* RETURN: none
|
|
*
|
|
* DESCRIPTION: Truncate a number to 32-bits if the currently executing method
|
|
* belongs to a 32-bit ACPI table.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiExTruncateFor32bitTable (
|
|
ACPI_OPERAND_OBJECT *ObjDesc)
|
|
{
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/*
|
|
* Object must be a valid number and we must be executing
|
|
* a control method
|
|
*/
|
|
if ((!ObjDesc) ||
|
|
(ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_INTEGER))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (AcpiGbl_IntegerByteWidth == 4)
|
|
{
|
|
/*
|
|
* We are running a method that exists in a 32-bit ACPI table.
|
|
* Truncate the value to 32 bits by zeroing out the upper 32-bit field
|
|
*/
|
|
ObjDesc->Integer.Value &= (ACPI_INTEGER) ACPI_UINT32_MAX;
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExAcquireGlobalLock
|
|
*
|
|
* PARAMETERS: FieldFlags - Flags with Lock rule:
|
|
* AlwaysLock or NeverLock
|
|
*
|
|
* RETURN: TRUE/FALSE indicating whether the lock was actually acquired
|
|
*
|
|
* DESCRIPTION: Obtain the global lock and keep track of this fact via two
|
|
* methods. A global variable keeps the state of the lock, and
|
|
* the state is returned to the caller.
|
|
*
|
|
******************************************************************************/
|
|
|
|
BOOLEAN
|
|
AcpiExAcquireGlobalLock (
|
|
UINT32 FieldFlags)
|
|
{
|
|
BOOLEAN Locked = FALSE;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ExAcquireGlobalLock");
|
|
|
|
|
|
/* Only attempt lock if the AlwaysLock bit is set */
|
|
|
|
if (FieldFlags & AML_FIELD_LOCK_RULE_MASK)
|
|
{
|
|
/* We should attempt to get the lock, wait forever */
|
|
|
|
Status = AcpiEvAcquireGlobalLock (ACPI_WAIT_FOREVER);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
Locked = TRUE;
|
|
}
|
|
else
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not acquire Global Lock, %s\n",
|
|
AcpiFormatException (Status)));
|
|
}
|
|
}
|
|
|
|
return_VALUE (Locked);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExReleaseGlobalLock
|
|
*
|
|
* PARAMETERS: LockedByMe - Return value from corresponding call to
|
|
* AcquireGlobalLock.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Release the global lock if it is locked.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiExReleaseGlobalLock (
|
|
BOOLEAN LockedByMe)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ExReleaseGlobalLock");
|
|
|
|
|
|
/* Only attempt unlock if the caller locked it */
|
|
|
|
if (LockedByMe)
|
|
{
|
|
/* OK, now release the lock */
|
|
|
|
Status = AcpiEvReleaseGlobalLock ();
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
/* Report the error, but there isn't much else we can do */
|
|
|
|
ACPI_REPORT_ERROR (("Could not release ACPI Global Lock, %s\n",
|
|
AcpiFormatException (Status)));
|
|
}
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExDigitsNeeded
|
|
*
|
|
* PARAMETERS: Value - Value to be represented
|
|
* Base - Base of representation
|
|
*
|
|
* RETURN: the number of digits needed to represent Value in Base
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiExDigitsNeeded (
|
|
ACPI_INTEGER Value,
|
|
UINT32 Base)
|
|
{
|
|
UINT32 NumDigits;
|
|
ACPI_INTEGER CurrentValue;
|
|
ACPI_INTEGER Quotient;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ExDigitsNeeded");
|
|
|
|
|
|
/*
|
|
* ACPI_INTEGER is unsigned, so we don't worry about a '-'
|
|
*/
|
|
if ((CurrentValue = Value) == 0)
|
|
{
|
|
return_VALUE (1);
|
|
}
|
|
|
|
NumDigits = 0;
|
|
|
|
while (CurrentValue)
|
|
{
|
|
(void) AcpiUtShortDivide (&CurrentValue, Base, &Quotient, NULL);
|
|
NumDigits++;
|
|
CurrentValue = Quotient;
|
|
}
|
|
|
|
return_VALUE (NumDigits);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExEisaIdToString
|
|
*
|
|
* PARAMETERS: NumericId - EISA ID to be converted
|
|
* OutString - Where to put the converted string (8 bytes)
|
|
*
|
|
* DESCRIPTION: Convert a numeric EISA ID to string representation
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiExEisaIdToString (
|
|
UINT32 NumericId,
|
|
char *OutString)
|
|
{
|
|
UINT32 EisaId;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/* Swap ID to big-endian to get contiguous bits */
|
|
|
|
EisaId = AcpiUtDwordByteSwap (NumericId);
|
|
|
|
OutString[0] = (char) ('@' + (((unsigned long) EisaId >> 26) & 0x1f));
|
|
OutString[1] = (char) ('@' + ((EisaId >> 21) & 0x1f));
|
|
OutString[2] = (char) ('@' + ((EisaId >> 16) & 0x1f));
|
|
OutString[3] = AcpiUtHexToAsciiChar ((ACPI_INTEGER) EisaId, 12);
|
|
OutString[4] = AcpiUtHexToAsciiChar ((ACPI_INTEGER) EisaId, 8);
|
|
OutString[5] = AcpiUtHexToAsciiChar ((ACPI_INTEGER) EisaId, 4);
|
|
OutString[6] = AcpiUtHexToAsciiChar ((ACPI_INTEGER) EisaId, 0);
|
|
OutString[7] = 0;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExUnsignedIntegerToString
|
|
*
|
|
* PARAMETERS: Value - Value to be converted
|
|
* OutString - Where to put the converted string (8 bytes)
|
|
*
|
|
* RETURN: Convert a number to string representation
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiExUnsignedIntegerToString (
|
|
ACPI_INTEGER Value,
|
|
char *OutString)
|
|
{
|
|
UINT32 Count;
|
|
UINT32 DigitsNeeded;
|
|
UINT32 Remainder;
|
|
ACPI_INTEGER Quotient;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
DigitsNeeded = AcpiExDigitsNeeded (Value, 10);
|
|
OutString[DigitsNeeded] = 0;
|
|
|
|
for (Count = DigitsNeeded; Count > 0; Count--)
|
|
{
|
|
(void) AcpiUtShortDivide (&Value, 10, &Quotient, &Remainder);
|
|
OutString[Count-1] = (char) ('0' + Remainder);\
|
|
Value = Quotient;
|
|
}
|
|
}
|
|
|
|
#endif
|