9560b6dea8
- 99% of the code is Intel's ACPICA. The license is compliant with BSD and GNU and virtually all systems that use ACPI use this code, For instance it is part of the Linux kernel. - The only minix specific files are acpi.c osminixxf.c platform/acminix.h and include/minix/acpi.h - At the moment the driver does not register interrupt hooks which I believe is mainly for handling PnP, events like "battery level is low" and power management. Should not be difficult to add it if need be. - The interface to the outside world is virtually non-existent except a trivial message based service for PCI driver to query which device is connected to what IRQ line. This will evolve as more components start using this driver. VM, Scheduler and IOMMU are the possible users right now. - because of dependency on a native 64bit (long long, part of c99) it is compiled only with a gnu-like compilers which in case of Minix includes gcc llvm-gcc and clang
1620 lines
46 KiB
C
1620 lines
46 KiB
C
/******************************************************************************
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*
|
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* Module Name: dsopcode - Dispatcher Op Region support and handling of
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* "control" opcodes
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*
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*****************************************************************************/
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/******************************************************************************
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*
|
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
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* All rights reserved.
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*
|
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* 2. License
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*
|
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* 2.1. This is your license from Intel Corp. under its intellectual property
|
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* rights. You may have additional license terms from the party that provided
|
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* you this software, covering your right to use that party's intellectual
|
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
|
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
|
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
|
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
|
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
|
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
|
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* conditions are met:
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*
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* 3. Conditions
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*
|
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* 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.
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|
*
|
|
* 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
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|
* make.
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|
*
|
|
* 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
|
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* provision in the documentation and/or other materials provided with the
|
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
|
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
|
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* other dealings in products derived from or relating to the Covered Code
|
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
|
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
|
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
|
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* 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
|
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
|
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
|
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* LIMITED REMEDY.
|
|
*
|
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* 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
|
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* United States government or any agency thereof requires an export license,
|
|
* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __DSOPCODE_C__
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|
|
#include "acpi.h"
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#include "accommon.h"
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#include "acparser.h"
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|
#include "amlcode.h"
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#include "acdispat.h"
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|
#include "acinterp.h"
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|
#include "acnamesp.h"
|
|
#include "acevents.h"
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#include "actables.h"
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|
|
#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME ("dsopcode")
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|
|
/* Local prototypes */
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|
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static ACPI_STATUS
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AcpiDsExecuteArguments (
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ACPI_NAMESPACE_NODE *Node,
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ACPI_NAMESPACE_NODE *ScopeNode,
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UINT32 AmlLength,
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|
UINT8 *AmlStart);
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|
|
static ACPI_STATUS
|
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AcpiDsInitBufferField (
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UINT16 AmlOpcode,
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|
ACPI_OPERAND_OBJECT *ObjDesc,
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|
ACPI_OPERAND_OBJECT *BufferDesc,
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|
ACPI_OPERAND_OBJECT *OffsetDesc,
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ACPI_OPERAND_OBJECT *LengthDesc,
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|
ACPI_OPERAND_OBJECT *ResultDesc);
|
|
|
|
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|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsExecuteArguments
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|
*
|
|
* PARAMETERS: Node - Object NS node
|
|
* ScopeNode - Parent NS node
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|
* AmlLength - Length of executable AML
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* AmlStart - Pointer to the AML
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|
*
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|
* RETURN: Status.
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|
*
|
|
* DESCRIPTION: Late (deferred) execution of region or field arguments
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*
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|
******************************************************************************/
|
|
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static ACPI_STATUS
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AcpiDsExecuteArguments (
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ACPI_NAMESPACE_NODE *Node,
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ACPI_NAMESPACE_NODE *ScopeNode,
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|
UINT32 AmlLength,
|
|
UINT8 *AmlStart)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_PARSE_OBJECT *Op;
|
|
ACPI_WALK_STATE *WalkState;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (DsExecuteArguments);
|
|
|
|
|
|
/*
|
|
* Allocate a new parser op to be the root of the parsed tree
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|
*/
|
|
Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP);
|
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if (!Op)
|
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{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Save the Node for use in AcpiPsParseAml */
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|
|
|
Op->Common.Node = ScopeNode;
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|
|
|
/* Create and initialize a new parser state */
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|
|
|
WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
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if (!WalkState)
|
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{
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Status = AE_NO_MEMORY;
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goto Cleanup;
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}
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|
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Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart,
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AmlLength, NULL, ACPI_IMODE_LOAD_PASS1);
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if (ACPI_FAILURE (Status))
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{
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|
AcpiDsDeleteWalkState (WalkState);
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|
goto Cleanup;
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|
}
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/* Mark this parse as a deferred opcode */
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|
WalkState->ParseFlags = ACPI_PARSE_DEFERRED_OP;
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WalkState->DeferredNode = Node;
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|
|
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/* Pass1: Parse the entire declaration */
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|
Status = AcpiPsParseAml (WalkState);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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/* Get and init the Op created above */
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Op->Common.Node = Node;
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AcpiPsDeleteParseTree (Op);
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|
|
/* Evaluate the deferred arguments */
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|
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Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP);
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if (!Op)
|
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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|
|
|
Op->Common.Node = ScopeNode;
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|
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/* Create and initialize a new parser state */
|
|
|
|
WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
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if (!WalkState)
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{
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Status = AE_NO_MEMORY;
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goto Cleanup;
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}
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|
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|
/* Execute the opcode and arguments */
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|
|
|
Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart,
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AmlLength, NULL, ACPI_IMODE_EXECUTE);
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if (ACPI_FAILURE (Status))
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{
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AcpiDsDeleteWalkState (WalkState);
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goto Cleanup;
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}
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/* Mark this execution as a deferred opcode */
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WalkState->DeferredNode = Node;
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Status = AcpiPsParseAml (WalkState);
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Cleanup:
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AcpiPsDeleteParseTree (Op);
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return_ACPI_STATUS (Status);
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}
|
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|
|
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|
/*******************************************************************************
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*
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* FUNCTION: AcpiDsGetBufferFieldArguments
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|
*
|
|
* PARAMETERS: ObjDesc - A valid BufferField object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get BufferField Buffer and Index. This implements the late
|
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* evaluation of these field attributes.
|
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*
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******************************************************************************/
|
|
|
|
ACPI_STATUS
|
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AcpiDsGetBufferFieldArguments (
|
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ACPI_OPERAND_OBJECT *ObjDesc)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ExtraDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsGetBufferFieldArguments, ObjDesc);
|
|
|
|
|
|
if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Get the AML pointer (method object) and BufferField node */
|
|
|
|
ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
|
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Node = ObjDesc->BufferField.Node;
|
|
|
|
ACPI_DEBUG_EXEC(AcpiUtDisplayInitPathname (ACPI_TYPE_BUFFER_FIELD, Node, NULL));
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n",
|
|
AcpiUtGetNodeName (Node)));
|
|
|
|
/* Execute the AML code for the TermArg arguments */
|
|
|
|
Status = AcpiDsExecuteArguments (Node, Node->Parent,
|
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ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
|
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return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsGetBankFieldArguments
|
|
*
|
|
* PARAMETERS: ObjDesc - A valid BankField object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get BankField BankValue. This implements the late
|
|
* evaluation of these field attributes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsGetBankFieldArguments (
|
|
ACPI_OPERAND_OBJECT *ObjDesc)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ExtraDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsGetBankFieldArguments, ObjDesc);
|
|
|
|
|
|
if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Get the AML pointer (method object) and BankField node */
|
|
|
|
ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
|
|
Node = ObjDesc->BankField.Node;
|
|
|
|
ACPI_DEBUG_EXEC(AcpiUtDisplayInitPathname (ACPI_TYPE_LOCAL_BANK_FIELD, Node, NULL));
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
|
|
AcpiUtGetNodeName (Node)));
|
|
|
|
/* Execute the AML code for the TermArg arguments */
|
|
|
|
Status = AcpiDsExecuteArguments (Node, Node->Parent,
|
|
ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsGetBufferArguments
|
|
*
|
|
* PARAMETERS: ObjDesc - A valid Buffer object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get Buffer length and initializer byte list. This implements
|
|
* the late evaluation of these attributes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsGetBufferArguments (
|
|
ACPI_OPERAND_OBJECT *ObjDesc)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsGetBufferArguments, ObjDesc);
|
|
|
|
|
|
if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Get the Buffer node */
|
|
|
|
Node = ObjDesc->Buffer.Node;
|
|
if (!Node)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"No pointer back to namespace node in buffer object %p", ObjDesc));
|
|
return_ACPI_STATUS (AE_AML_INTERNAL);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n"));
|
|
|
|
/* Execute the AML code for the TermArg arguments */
|
|
|
|
Status = AcpiDsExecuteArguments (Node, Node,
|
|
ObjDesc->Buffer.AmlLength, ObjDesc->Buffer.AmlStart);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsGetPackageArguments
|
|
*
|
|
* PARAMETERS: ObjDesc - A valid Package object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get Package length and initializer byte list. This implements
|
|
* the late evaluation of these attributes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsGetPackageArguments (
|
|
ACPI_OPERAND_OBJECT *ObjDesc)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsGetPackageArguments, ObjDesc);
|
|
|
|
|
|
if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Get the Package node */
|
|
|
|
Node = ObjDesc->Package.Node;
|
|
if (!Node)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"No pointer back to namespace node in package %p", ObjDesc));
|
|
return_ACPI_STATUS (AE_AML_INTERNAL);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n"));
|
|
|
|
/* Execute the AML code for the TermArg arguments */
|
|
|
|
Status = AcpiDsExecuteArguments (Node, Node,
|
|
ObjDesc->Package.AmlLength, ObjDesc->Package.AmlStart);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsGetRegionArguments
|
|
*
|
|
* PARAMETERS: ObjDesc - A valid region object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get region address and length. This implements the late
|
|
* evaluation of these region attributes.
|
|
*
|
|
****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsGetRegionArguments (
|
|
ACPI_OPERAND_OBJECT *ObjDesc)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ExtraDesc;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc);
|
|
|
|
|
|
if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
|
|
if (!ExtraDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Get the Region node */
|
|
|
|
Node = ObjDesc->Region.Node;
|
|
|
|
ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_REGION, Node, NULL));
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n",
|
|
AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart));
|
|
|
|
/* Execute the argument AML */
|
|
|
|
Status = AcpiDsExecuteArguments (Node, Node->Parent,
|
|
ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsInitializeRegion
|
|
*
|
|
* PARAMETERS: ObjHandle - Region namespace node
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Front end to EvInitializeRegion
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsInitializeRegion (
|
|
ACPI_HANDLE ObjHandle)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (ObjHandle);
|
|
|
|
/* Namespace is NOT locked */
|
|
|
|
Status = AcpiEvInitializeRegion (ObjDesc, FALSE);
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsInitBufferField
|
|
*
|
|
* PARAMETERS: AmlOpcode - CreateXxxField
|
|
* ObjDesc - BufferField object
|
|
* BufferDesc - Host Buffer
|
|
* OffsetDesc - Offset into buffer
|
|
* LengthDesc - Length of field (CREATE_FIELD_OP only)
|
|
* ResultDesc - Where to store the result
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Perform actual initialization of a buffer field
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiDsInitBufferField (
|
|
UINT16 AmlOpcode,
|
|
ACPI_OPERAND_OBJECT *ObjDesc,
|
|
ACPI_OPERAND_OBJECT *BufferDesc,
|
|
ACPI_OPERAND_OBJECT *OffsetDesc,
|
|
ACPI_OPERAND_OBJECT *LengthDesc,
|
|
ACPI_OPERAND_OBJECT *ResultDesc)
|
|
{
|
|
UINT32 Offset;
|
|
UINT32 BitOffset;
|
|
UINT32 BitCount;
|
|
UINT8 FieldFlags;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsInitBufferField, ObjDesc);
|
|
|
|
|
|
/* Host object must be a Buffer */
|
|
|
|
if (BufferDesc->Common.Type != ACPI_TYPE_BUFFER)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Target of Create Field is not a Buffer object - %s",
|
|
AcpiUtGetObjectTypeName (BufferDesc)));
|
|
|
|
Status = AE_AML_OPERAND_TYPE;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/*
|
|
* The last parameter to all of these opcodes (ResultDesc) started
|
|
* out as a NameString, and should therefore now be a NS node
|
|
* after resolution in AcpiExResolveOperands().
|
|
*/
|
|
if (ACPI_GET_DESCRIPTOR_TYPE (ResultDesc) != ACPI_DESC_TYPE_NAMED)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"(%s) destination not a NS Node [%s]",
|
|
AcpiPsGetOpcodeName (AmlOpcode),
|
|
AcpiUtGetDescriptorName (ResultDesc)));
|
|
|
|
Status = AE_AML_OPERAND_TYPE;
|
|
goto Cleanup;
|
|
}
|
|
|
|
Offset = (UINT32) OffsetDesc->Integer.Value;
|
|
|
|
/*
|
|
* Setup the Bit offsets and counts, according to the opcode
|
|
*/
|
|
switch (AmlOpcode)
|
|
{
|
|
case AML_CREATE_FIELD_OP:
|
|
|
|
/* Offset is in bits, count is in bits */
|
|
|
|
FieldFlags = AML_FIELD_ACCESS_BYTE;
|
|
BitOffset = Offset;
|
|
BitCount = (UINT32) LengthDesc->Integer.Value;
|
|
|
|
/* Must have a valid (>0) bit count */
|
|
|
|
if (BitCount == 0)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Attempt to CreateField of length zero"));
|
|
Status = AE_AML_OPERAND_VALUE;
|
|
goto Cleanup;
|
|
}
|
|
break;
|
|
|
|
case AML_CREATE_BIT_FIELD_OP:
|
|
|
|
/* Offset is in bits, Field is one bit */
|
|
|
|
BitOffset = Offset;
|
|
BitCount = 1;
|
|
FieldFlags = AML_FIELD_ACCESS_BYTE;
|
|
break;
|
|
|
|
case AML_CREATE_BYTE_FIELD_OP:
|
|
|
|
/* Offset is in bytes, field is one byte */
|
|
|
|
BitOffset = 8 * Offset;
|
|
BitCount = 8;
|
|
FieldFlags = AML_FIELD_ACCESS_BYTE;
|
|
break;
|
|
|
|
case AML_CREATE_WORD_FIELD_OP:
|
|
|
|
/* Offset is in bytes, field is one word */
|
|
|
|
BitOffset = 8 * Offset;
|
|
BitCount = 16;
|
|
FieldFlags = AML_FIELD_ACCESS_WORD;
|
|
break;
|
|
|
|
case AML_CREATE_DWORD_FIELD_OP:
|
|
|
|
/* Offset is in bytes, field is one dword */
|
|
|
|
BitOffset = 8 * Offset;
|
|
BitCount = 32;
|
|
FieldFlags = AML_FIELD_ACCESS_DWORD;
|
|
break;
|
|
|
|
case AML_CREATE_QWORD_FIELD_OP:
|
|
|
|
/* Offset is in bytes, field is one qword */
|
|
|
|
BitOffset = 8 * Offset;
|
|
BitCount = 64;
|
|
FieldFlags = AML_FIELD_ACCESS_QWORD;
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Unknown field creation opcode 0x%02X",
|
|
AmlOpcode));
|
|
Status = AE_AML_BAD_OPCODE;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Entire field must fit within the current length of the buffer */
|
|
|
|
if ((BitOffset + BitCount) >
|
|
(8 * (UINT32) BufferDesc->Buffer.Length))
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Field [%4.4s] at %u exceeds Buffer [%4.4s] size %u (bits)",
|
|
AcpiUtGetNodeName (ResultDesc),
|
|
BitOffset + BitCount,
|
|
AcpiUtGetNodeName (BufferDesc->Buffer.Node),
|
|
8 * (UINT32) BufferDesc->Buffer.Length));
|
|
Status = AE_AML_BUFFER_LIMIT;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/*
|
|
* Initialize areas of the field object that are common to all fields
|
|
* For FieldFlags, use LOCK_RULE = 0 (NO_LOCK),
|
|
* UPDATE_RULE = 0 (UPDATE_PRESERVE)
|
|
*/
|
|
Status = AcpiExPrepCommonFieldObject (ObjDesc, FieldFlags, 0,
|
|
BitOffset, BitCount);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
ObjDesc->BufferField.BufferObj = BufferDesc;
|
|
|
|
/* Reference count for BufferDesc inherits ObjDesc count */
|
|
|
|
BufferDesc->Common.ReferenceCount = (UINT16)
|
|
(BufferDesc->Common.ReferenceCount + ObjDesc->Common.ReferenceCount);
|
|
|
|
|
|
Cleanup:
|
|
|
|
/* Always delete the operands */
|
|
|
|
AcpiUtRemoveReference (OffsetDesc);
|
|
AcpiUtRemoveReference (BufferDesc);
|
|
|
|
if (AmlOpcode == AML_CREATE_FIELD_OP)
|
|
{
|
|
AcpiUtRemoveReference (LengthDesc);
|
|
}
|
|
|
|
/* On failure, delete the result descriptor */
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiUtRemoveReference (ResultDesc); /* Result descriptor */
|
|
}
|
|
else
|
|
{
|
|
/* Now the address and length are valid for this BufferField */
|
|
|
|
ObjDesc->BufferField.Flags |= AOPOBJ_DATA_VALID;
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsEvalBufferFieldOperands
|
|
*
|
|
* PARAMETERS: WalkState - Current walk
|
|
* Op - A valid BufferField Op object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get BufferField Buffer and Index
|
|
* Called from AcpiDsExecEndOp during BufferField parse tree walk
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsEvalBufferFieldOperands (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_PARSE_OBJECT *NextOp;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsEvalBufferFieldOperands, Op);
|
|
|
|
|
|
/*
|
|
* This is where we evaluate the address and length fields of the
|
|
* CreateXxxField declaration
|
|
*/
|
|
Node = Op->Common.Node;
|
|
|
|
/* NextOp points to the op that holds the Buffer */
|
|
|
|
NextOp = Op->Common.Value.Arg;
|
|
|
|
/* Evaluate/create the address and length operands */
|
|
|
|
Status = AcpiDsCreateOperands (WalkState, NextOp);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Resolve the operands */
|
|
|
|
Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
|
|
ACPI_WALK_OPERANDS, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_ERROR ((AE_INFO, "(%s) bad operand(s), status 0x%X",
|
|
AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status));
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Initialize the Buffer Field */
|
|
|
|
if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
|
|
{
|
|
/* NOTE: Slightly different operands for this opcode */
|
|
|
|
Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
|
|
WalkState->Operands[0], WalkState->Operands[1],
|
|
WalkState->Operands[2], WalkState->Operands[3]);
|
|
}
|
|
else
|
|
{
|
|
/* All other, CreateXxxField opcodes */
|
|
|
|
Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
|
|
WalkState->Operands[0], WalkState->Operands[1],
|
|
NULL, WalkState->Operands[2]);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsEvalRegionOperands
|
|
*
|
|
* PARAMETERS: WalkState - Current walk
|
|
* Op - A valid region Op object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get region address and length
|
|
* Called from AcpiDsExecEndOp during OpRegion parse tree walk
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsEvalRegionOperands (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_OPERAND_OBJECT *OperandDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_PARSE_OBJECT *NextOp;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op);
|
|
|
|
|
|
/*
|
|
* This is where we evaluate the address and length fields of the
|
|
* OpRegion declaration
|
|
*/
|
|
Node = Op->Common.Node;
|
|
|
|
/* NextOp points to the op that holds the SpaceID */
|
|
|
|
NextOp = Op->Common.Value.Arg;
|
|
|
|
/* NextOp points to address op */
|
|
|
|
NextOp = NextOp->Common.Next;
|
|
|
|
/* Evaluate/create the address and length operands */
|
|
|
|
Status = AcpiDsCreateOperands (WalkState, NextOp);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Resolve the length and address operands to numbers */
|
|
|
|
Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
|
|
ACPI_WALK_OPERANDS, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
/*
|
|
* Get the length operand and save it
|
|
* (at Top of stack)
|
|
*/
|
|
OperandDesc = WalkState->Operands[WalkState->NumOperands - 1];
|
|
|
|
ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value;
|
|
AcpiUtRemoveReference (OperandDesc);
|
|
|
|
/*
|
|
* Get the address and save it
|
|
* (at top of stack - 1)
|
|
*/
|
|
OperandDesc = WalkState->Operands[WalkState->NumOperands - 2];
|
|
|
|
ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS)
|
|
OperandDesc->Integer.Value;
|
|
AcpiUtRemoveReference (OperandDesc);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
|
|
ObjDesc,
|
|
ACPI_FORMAT_NATIVE_UINT (ObjDesc->Region.Address),
|
|
ObjDesc->Region.Length));
|
|
|
|
/* Now the address and length are valid for this opregion */
|
|
|
|
ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsEvalTableRegionOperands
|
|
*
|
|
* PARAMETERS: WalkState - Current walk
|
|
* Op - A valid region Op object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get region address and length
|
|
* Called from AcpiDsExecEndOp during DataTableRegion parse tree walk
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsEvalTableRegionOperands (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_OPERAND_OBJECT **Operand;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_PARSE_OBJECT *NextOp;
|
|
UINT32 TableIndex;
|
|
ACPI_TABLE_HEADER *Table;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
|
|
|
|
|
|
/*
|
|
* This is where we evaluate the SignatureString and OemIDString
|
|
* and OemTableIDString of the DataTableRegion declaration
|
|
*/
|
|
Node = Op->Common.Node;
|
|
|
|
/* NextOp points to SignatureString op */
|
|
|
|
NextOp = Op->Common.Value.Arg;
|
|
|
|
/*
|
|
* Evaluate/create the SignatureString and OemIDString
|
|
* and OemTableIDString operands
|
|
*/
|
|
Status = AcpiDsCreateOperands (WalkState, NextOp);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Resolve the SignatureString and OemIDString
|
|
* and OemTableIDString operands
|
|
*/
|
|
Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
|
|
ACPI_WALK_OPERANDS, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Operand = &WalkState->Operands[0];
|
|
|
|
/* Find the ACPI table */
|
|
|
|
Status = AcpiTbFindTable (Operand[0]->String.Pointer,
|
|
Operand[1]->String.Pointer, Operand[2]->String.Pointer,
|
|
&TableIndex);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
AcpiUtRemoveReference (Operand[0]);
|
|
AcpiUtRemoveReference (Operand[1]);
|
|
AcpiUtRemoveReference (Operand[2]);
|
|
|
|
Status = AcpiGetTableByIndex (TableIndex, &Table);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) ACPI_TO_INTEGER (Table);
|
|
ObjDesc->Region.Length = Table->Length;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
|
|
ObjDesc,
|
|
ACPI_FORMAT_NATIVE_UINT (ObjDesc->Region.Address),
|
|
ObjDesc->Region.Length));
|
|
|
|
/* Now the address and length are valid for this opregion */
|
|
|
|
ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsEvalDataObjectOperands
|
|
*
|
|
* PARAMETERS: WalkState - Current walk
|
|
* Op - A valid DataObject Op object
|
|
* ObjDesc - DataObject
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get the operands and complete the following data object types:
|
|
* Buffer, Package.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsEvalDataObjectOperands (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op,
|
|
ACPI_OPERAND_OBJECT *ObjDesc)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ArgDesc;
|
|
UINT32 Length;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (DsEvalDataObjectOperands);
|
|
|
|
|
|
/* The first operand (for all of these data objects) is the length */
|
|
|
|
/*
|
|
* Set proper index into operand stack for AcpiDsObjStackPush
|
|
* invoked inside AcpiDsCreateOperand.
|
|
*/
|
|
WalkState->OperandIndex = WalkState->NumOperands;
|
|
|
|
Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiExResolveOperands (WalkState->Opcode,
|
|
&(WalkState->Operands [WalkState->NumOperands -1]),
|
|
WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Extract length operand */
|
|
|
|
ArgDesc = WalkState->Operands [WalkState->NumOperands - 1];
|
|
Length = (UINT32) ArgDesc->Integer.Value;
|
|
|
|
/* Cleanup for length operand */
|
|
|
|
Status = AcpiDsObjStackPop (1, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
AcpiUtRemoveReference (ArgDesc);
|
|
|
|
/*
|
|
* Create the actual data object
|
|
*/
|
|
switch (Op->Common.AmlOpcode)
|
|
{
|
|
case AML_BUFFER_OP:
|
|
|
|
Status = AcpiDsBuildInternalBufferObj (WalkState, Op, Length, &ObjDesc);
|
|
break;
|
|
|
|
case AML_PACKAGE_OP:
|
|
case AML_VAR_PACKAGE_OP:
|
|
|
|
Status = AcpiDsBuildInternalPackageObj (WalkState, Op, Length, &ObjDesc);
|
|
break;
|
|
|
|
default:
|
|
return_ACPI_STATUS (AE_AML_BAD_OPCODE);
|
|
}
|
|
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
/*
|
|
* Return the object in the WalkState, unless the parent is a package -
|
|
* in this case, the return object will be stored in the parse tree
|
|
* for the package.
|
|
*/
|
|
if ((!Op->Common.Parent) ||
|
|
((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) &&
|
|
(Op->Common.Parent->Common.AmlOpcode != AML_VAR_PACKAGE_OP) &&
|
|
(Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP)))
|
|
{
|
|
WalkState->ResultObj = ObjDesc;
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsEvalBankFieldOperands
|
|
*
|
|
* PARAMETERS: WalkState - Current walk
|
|
* Op - A valid BankField Op object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get BankField BankValue
|
|
* Called from AcpiDsExecEndOp during BankField parse tree walk
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsEvalBankFieldOperands (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_OPERAND_OBJECT *OperandDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_PARSE_OBJECT *NextOp;
|
|
ACPI_PARSE_OBJECT *Arg;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (DsEvalBankFieldOperands, Op);
|
|
|
|
|
|
/*
|
|
* This is where we evaluate the BankValue field of the
|
|
* BankField declaration
|
|
*/
|
|
|
|
/* NextOp points to the op that holds the Region */
|
|
|
|
NextOp = Op->Common.Value.Arg;
|
|
|
|
/* NextOp points to the op that holds the Bank Register */
|
|
|
|
NextOp = NextOp->Common.Next;
|
|
|
|
/* NextOp points to the op that holds the Bank Value */
|
|
|
|
NextOp = NextOp->Common.Next;
|
|
|
|
/*
|
|
* Set proper index into operand stack for AcpiDsObjStackPush
|
|
* invoked inside AcpiDsCreateOperand.
|
|
*
|
|
* We use WalkState->Operands[0] to store the evaluated BankValue
|
|
*/
|
|
WalkState->OperandIndex = 0;
|
|
|
|
Status = AcpiDsCreateOperand (WalkState, NextOp, 0);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiExResolveToValue (&WalkState->Operands[0], WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS,
|
|
AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 1);
|
|
/*
|
|
* Get the BankValue operand and save it
|
|
* (at Top of stack)
|
|
*/
|
|
OperandDesc = WalkState->Operands[0];
|
|
|
|
/* Arg points to the start Bank Field */
|
|
|
|
Arg = AcpiPsGetArg (Op, 4);
|
|
while (Arg)
|
|
{
|
|
/* Ignore OFFSET and ACCESSAS terms here */
|
|
|
|
if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
|
|
{
|
|
Node = Arg->Common.Node;
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
ObjDesc->BankField.Value = (UINT32) OperandDesc->Integer.Value;
|
|
}
|
|
|
|
/* Move to next field in the list */
|
|
|
|
Arg = Arg->Common.Next;
|
|
}
|
|
|
|
AcpiUtRemoveReference (OperandDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsExecBeginControlOp
|
|
*
|
|
* PARAMETERS: WalkList - The list that owns the walk stack
|
|
* Op - The control Op
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Handles all control ops encountered during control method
|
|
* execution.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsExecBeginControlOp (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GENERIC_STATE *ControlState;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (DsExecBeginControlOp);
|
|
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", Op,
|
|
Op->Common.AmlOpcode, WalkState));
|
|
|
|
switch (Op->Common.AmlOpcode)
|
|
{
|
|
case AML_WHILE_OP:
|
|
|
|
/*
|
|
* If this is an additional iteration of a while loop, continue.
|
|
* There is no need to allocate a new control state.
|
|
*/
|
|
if (WalkState->ControlState)
|
|
{
|
|
if (WalkState->ControlState->Control.AmlPredicateStart ==
|
|
(WalkState->ParserState.Aml - 1))
|
|
{
|
|
/* Reset the state to start-of-loop */
|
|
|
|
WalkState->ControlState->Common.State = ACPI_CONTROL_CONDITIONAL_EXECUTING;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*lint -fallthrough */
|
|
|
|
case AML_IF_OP:
|
|
|
|
/*
|
|
* IF/WHILE: Create a new control state to manage these
|
|
* constructs. We need to manage these as a stack, in order
|
|
* to handle nesting.
|
|
*/
|
|
ControlState = AcpiUtCreateControlState ();
|
|
if (!ControlState)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
break;
|
|
}
|
|
/*
|
|
* Save a pointer to the predicate for multiple executions
|
|
* of a loop
|
|
*/
|
|
ControlState->Control.AmlPredicateStart = WalkState->ParserState.Aml - 1;
|
|
ControlState->Control.PackageEnd = WalkState->ParserState.PkgEnd;
|
|
ControlState->Control.Opcode = Op->Common.AmlOpcode;
|
|
|
|
|
|
/* Push the control state on this walk's control stack */
|
|
|
|
AcpiUtPushGenericState (&WalkState->ControlState, ControlState);
|
|
break;
|
|
|
|
case AML_ELSE_OP:
|
|
|
|
/* Predicate is in the state object */
|
|
/* If predicate is true, the IF was executed, ignore ELSE part */
|
|
|
|
if (WalkState->LastPredicate)
|
|
{
|
|
Status = AE_CTRL_TRUE;
|
|
}
|
|
|
|
break;
|
|
|
|
case AML_RETURN_OP:
|
|
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsExecEndControlOp
|
|
*
|
|
* PARAMETERS: WalkList - The list that owns the walk stack
|
|
* Op - The control Op
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Handles all control ops encountered during control method
|
|
* execution.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsExecEndControlOp (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GENERIC_STATE *ControlState;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (DsExecEndControlOp);
|
|
|
|
|
|
switch (Op->Common.AmlOpcode)
|
|
{
|
|
case AML_IF_OP:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", Op));
|
|
|
|
/*
|
|
* Save the result of the predicate in case there is an
|
|
* ELSE to come
|
|
*/
|
|
WalkState->LastPredicate =
|
|
(BOOLEAN) WalkState->ControlState->Common.Value;
|
|
|
|
/*
|
|
* Pop the control state that was created at the start
|
|
* of the IF and free it
|
|
*/
|
|
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
|
|
AcpiUtDeleteGenericState (ControlState);
|
|
break;
|
|
|
|
|
|
case AML_ELSE_OP:
|
|
|
|
break;
|
|
|
|
|
|
case AML_WHILE_OP:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", Op));
|
|
|
|
ControlState = WalkState->ControlState;
|
|
if (ControlState->Common.Value)
|
|
{
|
|
/* Predicate was true, the body of the loop was just executed */
|
|
|
|
/*
|
|
* This loop counter mechanism allows the interpreter to escape
|
|
* possibly infinite loops. This can occur in poorly written AML
|
|
* when the hardware does not respond within a while loop and the
|
|
* loop does not implement a timeout.
|
|
*/
|
|
ControlState->Control.LoopCount++;
|
|
if (ControlState->Control.LoopCount > ACPI_MAX_LOOP_ITERATIONS)
|
|
{
|
|
Status = AE_AML_INFINITE_LOOP;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Go back and evaluate the predicate and maybe execute the loop
|
|
* another time
|
|
*/
|
|
Status = AE_CTRL_PENDING;
|
|
WalkState->AmlLastWhile = ControlState->Control.AmlPredicateStart;
|
|
break;
|
|
}
|
|
|
|
/* Predicate was false, terminate this while loop */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"[WHILE_OP] termination! Op=%p\n",Op));
|
|
|
|
/* Pop this control state and free it */
|
|
|
|
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
|
|
AcpiUtDeleteGenericState (ControlState);
|
|
break;
|
|
|
|
|
|
case AML_RETURN_OP:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"[RETURN_OP] Op=%p Arg=%p\n",Op, Op->Common.Value.Arg));
|
|
|
|
/*
|
|
* One optional operand -- the return value
|
|
* It can be either an immediate operand or a result that
|
|
* has been bubbled up the tree
|
|
*/
|
|
if (Op->Common.Value.Arg)
|
|
{
|
|
/* Since we have a real Return(), delete any implicit return */
|
|
|
|
AcpiDsClearImplicitReturn (WalkState);
|
|
|
|
/* Return statement has an immediate operand */
|
|
|
|
Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
/*
|
|
* If value being returned is a Reference (such as
|
|
* an arg or local), resolve it now because it may
|
|
* cease to exist at the end of the method.
|
|
*/
|
|
Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
/*
|
|
* Get the return value and save as the last result
|
|
* value. This is the only place where WalkState->ReturnDesc
|
|
* is set to anything other than zero!
|
|
*/
|
|
WalkState->ReturnDesc = WalkState->Operands[0];
|
|
}
|
|
else if (WalkState->ResultCount)
|
|
{
|
|
/* Since we have a real Return(), delete any implicit return */
|
|
|
|
AcpiDsClearImplicitReturn (WalkState);
|
|
|
|
/*
|
|
* The return value has come from a previous calculation.
|
|
*
|
|
* If value being returned is a Reference (such as
|
|
* an arg or local), resolve it now because it may
|
|
* cease to exist at the end of the method.
|
|
*
|
|
* Allow references created by the Index operator to return unchanged.
|
|
*/
|
|
if ((ACPI_GET_DESCRIPTOR_TYPE (WalkState->Results->Results.ObjDesc[0]) == ACPI_DESC_TYPE_OPERAND) &&
|
|
((WalkState->Results->Results.ObjDesc [0])->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
|
|
((WalkState->Results->Results.ObjDesc [0])->Reference.Class != ACPI_REFCLASS_INDEX))
|
|
{
|
|
Status = AcpiExResolveToValue (&WalkState->Results->Results.ObjDesc [0], WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
}
|
|
|
|
WalkState->ReturnDesc = WalkState->Results->Results.ObjDesc [0];
|
|
}
|
|
else
|
|
{
|
|
/* No return operand */
|
|
|
|
if (WalkState->NumOperands)
|
|
{
|
|
AcpiUtRemoveReference (WalkState->Operands [0]);
|
|
}
|
|
|
|
WalkState->Operands [0] = NULL;
|
|
WalkState->NumOperands = 0;
|
|
WalkState->ReturnDesc = NULL;
|
|
}
|
|
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"Completed RETURN_OP State=%p, RetVal=%p\n",
|
|
WalkState, WalkState->ReturnDesc));
|
|
|
|
/* End the control method execution right now */
|
|
|
|
Status = AE_CTRL_TERMINATE;
|
|
break;
|
|
|
|
|
|
case AML_NOOP_OP:
|
|
|
|
/* Just do nothing! */
|
|
break;
|
|
|
|
|
|
case AML_BREAK_POINT_OP:
|
|
|
|
/*
|
|
* Set the single-step flag. This will cause the debugger (if present)
|
|
* to break to the console within the AML debugger at the start of the
|
|
* next AML instruction.
|
|
*/
|
|
ACPI_DEBUGGER_EXEC (
|
|
AcpiGbl_CmSingleStep = TRUE);
|
|
ACPI_DEBUGGER_EXEC (
|
|
AcpiOsPrintf ("**break** Executed AML BreakPoint opcode\n"));
|
|
|
|
/* Call to the OSL in case OS wants a piece of the action */
|
|
|
|
Status = AcpiOsSignal (ACPI_SIGNAL_BREAKPOINT,
|
|
"Executed AML Breakpoint opcode");
|
|
break;
|
|
|
|
|
|
case AML_BREAK_OP:
|
|
case AML_CONTINUE_OP: /* ACPI 2.0 */
|
|
|
|
|
|
/* Pop and delete control states until we find a while */
|
|
|
|
while (WalkState->ControlState &&
|
|
(WalkState->ControlState->Control.Opcode != AML_WHILE_OP))
|
|
{
|
|
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
|
|
AcpiUtDeleteGenericState (ControlState);
|
|
}
|
|
|
|
/* No while found? */
|
|
|
|
if (!WalkState->ControlState)
|
|
{
|
|
return (AE_AML_NO_WHILE);
|
|
}
|
|
|
|
/* Was: WalkState->AmlLastWhile = WalkState->ControlState->Control.AmlPredicateStart; */
|
|
|
|
WalkState->AmlLastWhile = WalkState->ControlState->Control.PackageEnd;
|
|
|
|
/* Return status depending on opcode */
|
|
|
|
if (Op->Common.AmlOpcode == AML_BREAK_OP)
|
|
{
|
|
Status = AE_CTRL_BREAK;
|
|
}
|
|
else
|
|
{
|
|
Status = AE_CTRL_CONTINUE;
|
|
}
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
ACPI_ERROR ((AE_INFO, "Unknown control opcode=0x%X Op=%p",
|
|
Op->Common.AmlOpcode, Op));
|
|
|
|
Status = AE_AML_BAD_OPCODE;
|
|
break;
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|