2010-03-01 00:44:33 +00:00
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/******************************************************************************
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*
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* Module Name: exutils - interpreter/scanner utilities
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*
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*****************************************************************************/
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2016-01-08 16:37:52 +00:00
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/*
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2018-10-25 10:00:28 +00:00
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* Copyright (C) 2000 - 2018, Intel Corp.
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2010-03-01 00:44:33 +00:00
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* All rights reserved.
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*
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2016-01-08 16:37:52 +00:00
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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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2010-03-01 00:44:33 +00:00
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/*
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* DEFINE_AML_GLOBALS is tested in amlcode.h
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* to determine whether certain global names should be "defined" or only
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2014-04-03 21:12:09 +00:00
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* "declared" in the current compilation. This enhances maintainability
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2010-03-01 00:44:33 +00:00
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* by enabling a single header file to embody all knowledge of the names
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* in question.
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*
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* Exactly one module of any executable should #define DEFINE_GLOBALS
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2014-04-03 21:12:09 +00:00
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* before #including the header files which use this convention. The
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2010-03-01 00:44:33 +00:00
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* names in question will be defined and initialized in that module,
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* and declared as extern in all other modules which #include those
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* header files.
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*/
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#define DEFINE_AML_GLOBALS
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#include "acpi.h"
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#include "accommon.h"
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#include "acinterp.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_EXECUTER
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ACPI_MODULE_NAME ("exutils")
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/* Local prototypes */
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static UINT32
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AcpiExDigitsNeeded (
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2011-09-29 20:57:14 +00:00
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UINT64 Value,
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2010-03-01 00:44:33 +00:00
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UINT32 Base);
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#ifndef ACPI_NO_METHOD_EXECUTION
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/*******************************************************************************
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*
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* FUNCTION: AcpiExEnterInterpreter
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Enter the interpreter execution region. Failure to enter
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* the interpreter region is a fatal system error. Used in
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* conjunction with ExitInterpreter.
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*
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******************************************************************************/
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void
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AcpiExEnterInterpreter (
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void)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (ExEnterInterpreter);
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Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER);
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if (ACPI_FAILURE (Status))
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{
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ACPI_ERROR ((AE_INFO, "Could not acquire AML Interpreter mutex"));
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}
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2017-02-26 00:26:24 +00:00
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Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE (Status))
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{
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ACPI_ERROR ((AE_INFO, "Could not acquire AML Namespace mutex"));
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}
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2010-03-01 00:44:33 +00:00
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExExitInterpreter
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Exit the interpreter execution region. This is the top level
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* routine used to exit the interpreter when all processing has
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2014-04-03 21:12:09 +00:00
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* been completed, or when the method blocks.
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*
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* Cases where the interpreter is unlocked internally:
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* 1) Method will be blocked on a Sleep() AML opcode
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* 2) Method will be blocked on an Acquire() AML opcode
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* 3) Method will be blocked on a Wait() AML opcode
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* 4) Method will be blocked to acquire the global lock
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* 5) Method will be blocked waiting to execute a serialized control
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* method that is currently executing
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* 6) About to invoke a user-installed opregion handler
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2010-03-01 00:44:33 +00:00
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*
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******************************************************************************/
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void
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AcpiExExitInterpreter (
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void)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (ExExitInterpreter);
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2017-02-26 00:26:24 +00:00
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Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE (Status))
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{
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ACPI_ERROR ((AE_INFO, "Could not release AML Namespace mutex"));
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}
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2010-03-01 00:44:33 +00:00
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Status = AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER);
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if (ACPI_FAILURE (Status))
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{
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ACPI_ERROR ((AE_INFO, "Could not release AML Interpreter mutex"));
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}
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExTruncateFor32bitTable
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*
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* PARAMETERS: ObjDesc - Object to be truncated
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*
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2014-04-03 21:12:09 +00:00
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* RETURN: TRUE if a truncation was performed, FALSE otherwise.
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2010-03-01 00:44:33 +00:00
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*
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* DESCRIPTION: Truncate an ACPI Integer to 32 bits if the execution mode is
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* 32-bit, as determined by the revision of the DSDT.
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*
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******************************************************************************/
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2014-04-03 21:12:09 +00:00
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BOOLEAN
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2010-03-01 00:44:33 +00:00
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AcpiExTruncateFor32bitTable (
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ACPI_OPERAND_OBJECT *ObjDesc)
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{
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ACPI_FUNCTION_ENTRY ();
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/*
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* Object must be a valid number and we must be executing
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2014-04-03 21:12:09 +00:00
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* a control method. Object could be NS node for AML_INT_NAMEPATH_OP.
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2010-03-01 00:44:33 +00:00
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*/
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if ((!ObjDesc) ||
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(ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) != ACPI_DESC_TYPE_OPERAND) ||
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(ObjDesc->Common.Type != ACPI_TYPE_INTEGER))
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{
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2014-04-03 21:12:09 +00:00
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return (FALSE);
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2010-03-01 00:44:33 +00:00
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}
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2014-04-03 21:12:09 +00:00
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if ((AcpiGbl_IntegerByteWidth == 4) &&
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(ObjDesc->Integer.Value > (UINT64) ACPI_UINT32_MAX))
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2010-03-01 00:44:33 +00:00
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{
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/*
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2015-12-31 14:25:35 +00:00
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* We are executing in a 32-bit ACPI table. Truncate
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* the value to 32 bits by zeroing out the upper 32-bit field
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2010-03-01 00:44:33 +00:00
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*/
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2011-09-29 20:57:14 +00:00
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ObjDesc->Integer.Value &= (UINT64) ACPI_UINT32_MAX;
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2014-04-03 21:12:09 +00:00
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return (TRUE);
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2010-03-01 00:44:33 +00:00
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}
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2014-04-03 21:12:09 +00:00
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return (FALSE);
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2010-03-01 00:44:33 +00:00
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExAcquireGlobalLock
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*
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* PARAMETERS: FieldFlags - Flags with Lock rule:
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* AlwaysLock or NeverLock
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*
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* RETURN: None
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*
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* DESCRIPTION: Obtain the ACPI hardware Global Lock, only if the field
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* flags specifiy that it is to be obtained before field access.
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*
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******************************************************************************/
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void
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AcpiExAcquireGlobalLock (
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UINT32 FieldFlags)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (ExAcquireGlobalLock);
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/* Only use the lock if the AlwaysLock bit is set */
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if (!(FieldFlags & AML_FIELD_LOCK_RULE_MASK))
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{
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return_VOID;
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}
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/* Attempt to get the global lock, wait forever */
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Status = AcpiExAcquireMutexObject (ACPI_WAIT_FOREVER,
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2015-12-31 14:25:35 +00:00
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AcpiGbl_GlobalLockMutex, AcpiOsGetThreadId ());
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2010-03-01 00:44:33 +00:00
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not acquire Global Lock"));
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}
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExReleaseGlobalLock
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*
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* PARAMETERS: FieldFlags - Flags with Lock rule:
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* AlwaysLock or NeverLock
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*
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* RETURN: None
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*
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* DESCRIPTION: Release the ACPI hardware Global Lock
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*
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******************************************************************************/
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void
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AcpiExReleaseGlobalLock (
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UINT32 FieldFlags)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (ExReleaseGlobalLock);
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/* Only use the lock if the AlwaysLock bit is set */
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if (!(FieldFlags & AML_FIELD_LOCK_RULE_MASK))
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{
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return_VOID;
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}
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/* Release the global lock */
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Status = AcpiExReleaseMutexObject (AcpiGbl_GlobalLockMutex);
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if (ACPI_FAILURE (Status))
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{
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/* Report the error, but there isn't much else we can do */
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not release Global Lock"));
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}
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExDigitsNeeded
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*
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* PARAMETERS: Value - Value to be represented
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* Base - Base of representation
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*
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* RETURN: The number of digits.
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*
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* DESCRIPTION: Calculate the number of digits needed to represent the Value
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* in the given Base (Radix)
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*
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******************************************************************************/
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static UINT32
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AcpiExDigitsNeeded (
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2011-09-29 20:57:14 +00:00
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UINT64 Value,
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2010-03-01 00:44:33 +00:00
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UINT32 Base)
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{
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UINT32 NumDigits;
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2011-09-29 20:57:14 +00:00
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UINT64 CurrentValue;
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2010-03-01 00:44:33 +00:00
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ACPI_FUNCTION_TRACE (ExDigitsNeeded);
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2011-09-29 20:57:14 +00:00
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/* UINT64 is unsigned, so we don't worry about a '-' prefix */
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2010-03-01 00:44:33 +00:00
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if (Value == 0)
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{
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return_UINT32 (1);
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}
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CurrentValue = Value;
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NumDigits = 0;
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/* Count the digits in the requested base */
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while (CurrentValue)
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{
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(void) AcpiUtShortDivide (CurrentValue, Base, &CurrentValue, NULL);
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NumDigits++;
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}
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return_UINT32 (NumDigits);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExEisaIdToString
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*
|
2016-04-12 15:44:33 +00:00
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* PARAMETERS: OutString - Where to put the converted string (8 bytes)
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* CompressedId - EISAID to be converted
|
2010-03-01 00:44:33 +00:00
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*
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* RETURN: None
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*
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* DESCRIPTION: Convert a numeric EISAID to string representation. Return
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* buffer must be large enough to hold the string. The string
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* returned is always exactly of length ACPI_EISAID_STRING_SIZE
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* (includes null terminator). The EISAID is always 32 bits.
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*
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******************************************************************************/
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void
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AcpiExEisaIdToString (
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char *OutString,
|
2011-09-29 20:57:14 +00:00
|
|
|
UINT64 CompressedId)
|
2010-03-01 00:44:33 +00:00
|
|
|
{
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UINT32 SwappedId;
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ACPI_FUNCTION_ENTRY ();
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/* The EISAID should be a 32-bit integer */
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if (CompressedId > ACPI_UINT32_MAX)
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{
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|
|
ACPI_WARNING ((AE_INFO,
|
2015-12-31 14:25:35 +00:00
|
|
|
"Expected EISAID is larger than 32 bits: "
|
|
|
|
"0x%8.8X%8.8X, truncating",
|
2010-03-01 00:44:33 +00:00
|
|
|
ACPI_FORMAT_UINT64 (CompressedId)));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Swap ID to big-endian to get contiguous bits */
|
|
|
|
|
|
|
|
SwappedId = AcpiUtDwordByteSwap ((UINT32) CompressedId);
|
|
|
|
|
|
|
|
/* First 3 bytes are uppercase letters. Next 4 bytes are hexadecimal */
|
|
|
|
|
|
|
|
OutString[0] = (char) (0x40 + (((unsigned long) SwappedId >> 26) & 0x1F));
|
|
|
|
OutString[1] = (char) (0x40 + ((SwappedId >> 21) & 0x1F));
|
|
|
|
OutString[2] = (char) (0x40 + ((SwappedId >> 16) & 0x1F));
|
2011-09-29 20:57:14 +00:00
|
|
|
OutString[3] = AcpiUtHexToAsciiChar ((UINT64) SwappedId, 12);
|
|
|
|
OutString[4] = AcpiUtHexToAsciiChar ((UINT64) SwappedId, 8);
|
|
|
|
OutString[5] = AcpiUtHexToAsciiChar ((UINT64) SwappedId, 4);
|
|
|
|
OutString[6] = AcpiUtHexToAsciiChar ((UINT64) SwappedId, 0);
|
2010-03-01 00:44:33 +00:00
|
|
|
OutString[7] = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: AcpiExIntegerToString
|
|
|
|
*
|
|
|
|
* PARAMETERS: OutString - Where to put the converted string. At least
|
|
|
|
* 21 bytes are needed to hold the largest
|
|
|
|
* possible 64-bit integer.
|
|
|
|
* Value - Value to be converted
|
|
|
|
*
|
2016-04-12 15:44:33 +00:00
|
|
|
* RETURN: Converted string in OutString
|
2010-03-01 00:44:33 +00:00
|
|
|
*
|
|
|
|
* DESCRIPTION: Convert a 64-bit integer to decimal string representation.
|
|
|
|
* Assumes string buffer is large enough to hold the string. The
|
|
|
|
* largest string is (ACPI_MAX64_DECIMAL_DIGITS + 1).
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
void
|
|
|
|
AcpiExIntegerToString (
|
|
|
|
char *OutString,
|
2011-09-29 20:57:14 +00:00
|
|
|
UINT64 Value)
|
2010-03-01 00:44:33 +00:00
|
|
|
{
|
|
|
|
UINT32 Count;
|
|
|
|
UINT32 DigitsNeeded;
|
|
|
|
UINT32 Remainder;
|
|
|
|
|
|
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
|
|
|
|
|
|
DigitsNeeded = AcpiExDigitsNeeded (Value, 10);
|
|
|
|
OutString[DigitsNeeded] = 0;
|
|
|
|
|
|
|
|
for (Count = DigitsNeeded; Count > 0; Count--)
|
|
|
|
{
|
|
|
|
(void) AcpiUtShortDivide (Value, 10, &Value, &Remainder);
|
|
|
|
OutString[Count-1] = (char) ('0' + Remainder);\
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-04-03 21:12:09 +00:00
|
|
|
|
2015-11-10 16:56:46 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: AcpiExPciClsToString
|
|
|
|
*
|
|
|
|
* PARAMETERS: OutString - Where to put the converted string (7 bytes)
|
2016-04-12 15:44:33 +00:00
|
|
|
* ClassCode - PCI class code to be converted (3 bytes)
|
2015-11-10 16:56:46 +00:00
|
|
|
*
|
2016-04-12 15:44:33 +00:00
|
|
|
* RETURN: Converted string in OutString
|
2015-11-10 16:56:46 +00:00
|
|
|
*
|
|
|
|
* DESCRIPTION: Convert 3-bytes PCI class code to string representation.
|
|
|
|
* Return buffer must be large enough to hold the string. The
|
|
|
|
* string returned is always exactly of length
|
|
|
|
* ACPI_PCICLS_STRING_SIZE (includes null terminator).
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
void
|
|
|
|
AcpiExPciClsToString (
|
|
|
|
char *OutString,
|
|
|
|
UINT8 ClassCode[3])
|
|
|
|
{
|
|
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
|
|
|
|
|
|
/* All 3 bytes are hexadecimal */
|
|
|
|
|
|
|
|
OutString[0] = AcpiUtHexToAsciiChar ((UINT64) ClassCode[0], 4);
|
|
|
|
OutString[1] = AcpiUtHexToAsciiChar ((UINT64) ClassCode[0], 0);
|
|
|
|
OutString[2] = AcpiUtHexToAsciiChar ((UINT64) ClassCode[1], 4);
|
|
|
|
OutString[3] = AcpiUtHexToAsciiChar ((UINT64) ClassCode[1], 0);
|
|
|
|
OutString[4] = AcpiUtHexToAsciiChar ((UINT64) ClassCode[2], 4);
|
|
|
|
OutString[5] = AcpiUtHexToAsciiChar ((UINT64) ClassCode[2], 0);
|
|
|
|
OutString[6] = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2014-04-03 21:12:09 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: AcpiIsValidSpaceId
|
|
|
|
*
|
|
|
|
* PARAMETERS: SpaceId - ID to be validated
|
|
|
|
*
|
2016-04-12 15:44:33 +00:00
|
|
|
* RETURN: TRUE if SpaceId is a valid/supported ID.
|
2014-04-03 21:12:09 +00:00
|
|
|
*
|
|
|
|
* DESCRIPTION: Validate an operation region SpaceID.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
BOOLEAN
|
|
|
|
AcpiIsValidSpaceId (
|
|
|
|
UINT8 SpaceId)
|
|
|
|
{
|
|
|
|
|
|
|
|
if ((SpaceId >= ACPI_NUM_PREDEFINED_REGIONS) &&
|
|
|
|
(SpaceId < ACPI_USER_REGION_BEGIN) &&
|
|
|
|
(SpaceId != ACPI_ADR_SPACE_DATA_TABLE) &&
|
|
|
|
(SpaceId != ACPI_ADR_SPACE_FIXED_HARDWARE))
|
|
|
|
{
|
|
|
|
return (FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (TRUE);
|
|
|
|
}
|
|
|
|
|
2010-03-01 00:44:33 +00:00
|
|
|
#endif
|