freebsd-skq/sys/contrib/dev/acpica/exresnte.c
2001-01-31 09:17:50 +00:00

698 lines
22 KiB
C

/******************************************************************************
*
* Module Name: amresnte - AML Interpreter object resolution
* $Revision: 27 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __AMRESNTE_C__
#include "acpi.h"
#include "amlcode.h"
#include "acparser.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "actables.h"
#include "acevents.h"
#define _COMPONENT INTERPRETER
MODULE_NAME ("amresnte")
/*******************************************************************************
*
* FUNCTION: AcpiAmlResolveNodeToValue
*
* PARAMETERS: StackPtr - Pointer to a location on a stack that contains
* a pointer to an Node
*
* RETURN: Status
*
* DESCRIPTION: Resolve a ACPI_NAMESPACE_NODE (Node,
* A.K.A. a "direct name pointer")
*
* Note: for some of the data types, the pointer attached to the Node
* can be either a pointer to an actual internal object or a pointer into the
* AML stream itself. These types are currently:
*
* ACPI_TYPE_INTEGER
* ACPI_TYPE_STRING
* ACPI_TYPE_BUFFER
* ACPI_TYPE_MUTEX
* ACPI_TYPE_PACKAGE
*
******************************************************************************/
ACPI_STATUS
AcpiAmlResolveNodeToValue (
ACPI_NAMESPACE_NODE **StackPtr,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
ACPI_OPERAND_OBJECT *ValDesc = NULL;
ACPI_OPERAND_OBJECT *ObjDesc = NULL;
ACPI_NAMESPACE_NODE *Node;
UINT8 *AmlPointer = NULL;
OBJECT_TYPE_INTERNAL EntryType;
BOOLEAN Locked;
BOOLEAN AttachedAmlPointer = FALSE;
UINT8 AmlOpcode = 0;
ACPI_INTEGER TempVal;
OBJECT_TYPE_INTERNAL ObjectType;
FUNCTION_TRACE ("AmlResolveEntryToValue");
Node = *StackPtr;
/*
* The stack pointer is a "Direct name ptr", and points to a
* a ACPI_NAMESPACE_NODE (Node). Get the pointer that is attached to
* the Node.
*/
ValDesc = AcpiNsGetAttachedObject ((ACPI_HANDLE) Node);
EntryType = AcpiNsGetType ((ACPI_HANDLE) Node);
DEBUG_PRINT (TRACE_EXEC,
("AmlResolveEntryToValue: Entry=%p ValDesc=%p Type=%X\n",
Node, ValDesc, EntryType));
/*
* The ValDesc attached to the Node can be either:
* 1) An internal ACPI object
* 2) A pointer into the AML stream (into one of the ACPI system tables)
*/
if (AcpiTbSystemTablePointer (ValDesc))
{
AttachedAmlPointer = TRUE;
AmlOpcode = *((UINT8 *) ValDesc);
AmlPointer = ((UINT8 *) ValDesc) + 1;
DEBUG_PRINT (TRACE_EXEC,
("AmlResolveEntryToValue: Unparsed AML: %p Len=%X\n",
AmlOpcode, AmlPointer));
}
/*
* Several EntryTypes do not require further processing, so
* we will return immediately
*/
/* Devices rarely have an attached object, return the Node
* and Method locals and arguments have a pseudo-Node
*/
if (EntryType == ACPI_TYPE_DEVICE ||
(Node->Flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL)))
{
return_ACPI_STATUS (AE_OK);
}
if (!ValDesc)
{
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: No object attached to node %p\n",
Node));
return_ACPI_STATUS (AE_AML_NO_OPERAND);
}
/*
* Action is based on the type of the Node, which indicates the type
* of the attached object or pointer
*/
switch (EntryType)
{
case ACPI_TYPE_PACKAGE:
if (AttachedAmlPointer)
{
/*
* This means that the package initialization is not parsed
* -- should not happen
*/
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: Unparsed Packages not supported!\n"));
return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
}
/* ValDesc is an internal object in all cases by the time we get here */
if (ACPI_TYPE_PACKAGE != ValDesc->Common.Type)
{
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: Object not a package, type %X\n",
ValDesc->Common.Type));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Return an additional reference to the object */
ObjDesc = ValDesc;
AcpiCmAddReference (ObjDesc);
break;
case ACPI_TYPE_BUFFER:
if (AttachedAmlPointer)
{
/*
* This means that the buffer initialization is not parsed
* -- should not happen
*/
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: Unparsed Buffers not supported!\n"));
return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
}
/* ValDesc is an internal object in all cases by the time we get here */
if (ACPI_TYPE_BUFFER != ValDesc->Common.Type)
{
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: Object not a buffer, type %X\n",
ValDesc->Common.Type));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Return an additional reference to the object */
ObjDesc = ValDesc;
AcpiCmAddReference (ObjDesc);
break;
case ACPI_TYPE_STRING:
if (AttachedAmlPointer)
{
/* Allocate a new string object */
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_STRING);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Init the internal object */
ObjDesc->String.Pointer = (NATIVE_CHAR *) AmlPointer;
ObjDesc->String.Length = STRLEN (ObjDesc->String.Pointer);
}
else
{
if (ACPI_TYPE_STRING != ValDesc->Common.Type)
{
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: Object not a string, type %X\n",
ValDesc->Common.Type));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Return an additional reference to the object */
ObjDesc = ValDesc;
AcpiCmAddReference (ObjDesc);
}
break;
case ACPI_TYPE_INTEGER:
DEBUG_PRINT (TRACE_EXEC, ("AmlResolveEntryToValue: case Number \n"));
/*
* The Node has an attached internal object, make sure that it's a
* number
*/
if (ACPI_TYPE_INTEGER != ValDesc->Common.Type)
{
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveToValue: Object not a Number, type %X\n",
ValDesc->Common.Type));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Return an additional reference to the object */
ObjDesc = ValDesc;
AcpiCmAddReference (ObjDesc);
break;
case INTERNAL_TYPE_DEF_FIELD:
/*
* TBD: [Investigate] Is this the correct solution?
*
* This section was extended to convert to generic buffer if
* the return length is greater than 32 bits, but still allows
* for returning a type Number for smaller values because the
* caller can then apply arithmetic operators on those fields.
*
* XXX - Implementation limitation: Fields are implemented as type
* XXX - Number, but they really are supposed to be type Buffer.
* XXX - The two are interchangeable only for lengths <= 32 bits.
*/
if(ValDesc->Field.Length > 32)
{
ObjectType = ACPI_TYPE_BUFFER;
}
else
{
ObjectType = ACPI_TYPE_INTEGER;
}
/*
* Create the destination buffer object and the buffer space.
*/
ObjDesc = AcpiCmCreateInternalObject (ObjectType);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*
* Fill in the object specific details
*/
if (ACPI_TYPE_BUFFER == ObjectType)
{
ObjDesc->Buffer.Pointer = AcpiCmCallocate (ValDesc->Field.Length);
if (!ObjDesc->Buffer.Pointer)
{
AcpiCmRemoveReference(ObjDesc);
return_ACPI_STATUS (AE_NO_MEMORY);
}
ObjDesc->Buffer.Length = ValDesc->Field.Length;
Status = AcpiAmlAccessNamedField (ACPI_READ, (ACPI_HANDLE) Node,
ObjDesc->Buffer.Pointer, ObjDesc->Buffer.Length);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
else
{
Status = AcpiAmlAccessNamedField (ACPI_READ, (ACPI_HANDLE) Node,
&TempVal, sizeof (TempVal));
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ObjDesc->Integer.Value = TempVal;
}
DEBUG_PRINT (TRACE_EXEC,
("AmlResolveEntryToValue: DefField Entry=%p ValDesc=%p Type=%X\n",
Node, ValDesc, EntryType));
break;
case INTERNAL_TYPE_BANK_FIELD:
if (AttachedAmlPointer)
{
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: BankField cannot be an Aml ptr\n"));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
if (INTERNAL_TYPE_BANK_FIELD != ValDesc->Common.Type)
{
DEBUG_PRINT (ACPI_ERROR, (
"AmlResolveToValue: Object not a BankField, type %X\n",
ValDesc->Common.Type));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Get the global lock if needed */
ObjDesc = (ACPI_OPERAND_OBJECT *) *StackPtr;
Locked = AcpiAmlAcquireGlobalLock (ObjDesc->FieldUnit.LockRule);
/* Set Index value to select proper Data register */
/* perform the update */
Status = AcpiAmlAccessNamedField (ACPI_WRITE,
ValDesc->BankField.BankSelect, &ValDesc->BankField.Value,
sizeof (ValDesc->BankField.Value));
AcpiAmlReleaseGlobalLock (Locked);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Read Data value */
Status = AcpiAmlAccessNamedField (ACPI_READ,
(ACPI_HANDLE) ValDesc->BankField.Container,
&TempVal, sizeof (TempVal));
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Create an object for the result */
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
ObjDesc->Integer.Value = TempVal;
break;
case INTERNAL_TYPE_INDEX_FIELD:
if (AttachedAmlPointer)
{
DEBUG_PRINT (ACPI_ERROR, ("AmlResolveEntryToValue: Internal - IndexField cannot be an Aml ptr\n"));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
if (INTERNAL_TYPE_INDEX_FIELD != ValDesc->Common.Type)
{
DEBUG_PRINT (ACPI_ERROR, (
"AmlResolveToValue: Object not an IndexField, type %X\n",
ValDesc->Common.Type));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Set Index value to select proper Data register */
/* Get the global lock if needed */
ObjDesc = (ACPI_OPERAND_OBJECT *) *StackPtr;
Locked = AcpiAmlAcquireGlobalLock (ObjDesc->FieldUnit.LockRule);
/* Perform the update */
Status = AcpiAmlAccessNamedField (ACPI_WRITE,
ValDesc->IndexField.Index, &ValDesc->IndexField.Value,
sizeof (ValDesc->IndexField.Value));
AcpiAmlReleaseGlobalLock (Locked);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Read Data value */
Status = AcpiAmlAccessNamedField (ACPI_READ, ValDesc->IndexField.Data,
&TempVal, sizeof (TempVal));
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Create an object for the result */
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
ObjDesc->Integer.Value = TempVal;
break;
case ACPI_TYPE_FIELD_UNIT:
if (AttachedAmlPointer)
{
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: FieldUnit cannot be an Aml ptr\n"));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
if (ValDesc->Common.Type != (UINT8) EntryType)
{
DEBUG_PRINT (ACPI_ERROR, (
"AmlResolveToValue: Object type %X not same as EntryType %X\n",
ValDesc->Common.Type, EntryType));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
break;
}
/* Create object for result */
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_ANY);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Status = AcpiAmlGetFieldUnitValue (ValDesc, ObjDesc);
if (ACPI_FAILURE (Status))
{
AcpiCmRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
break;
/*
* For these objects, just return the object attached to the Node
*/
case ACPI_TYPE_MUTEX:
case ACPI_TYPE_METHOD:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_EVENT:
case ACPI_TYPE_REGION:
/* Return an additional reference to the object */
ObjDesc = ValDesc;
AcpiCmAddReference (ObjDesc);
break;
/* TYPE_Any is untyped, and thus there is no object associated with it */
case ACPI_TYPE_ANY:
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: Untyped entry %p, no attached object!\n",
Node));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */
break;
/*
* The only named references allowed are named constants
*
* e.g. Name (\OSFL, Ones)
*/
case INTERNAL_TYPE_REFERENCE:
switch (ValDesc->Reference.OpCode)
{
case AML_ZERO_OP:
TempVal = 0;
break;
case AML_ONE_OP:
TempVal = 1;
break;
case AML_ONES_OP:
TempVal = ACPI_INTEGER_MAX;
break;
default:
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveToValue/Number: Unsupported reference opcode %X\n",
ValDesc->Reference.OpCode));
return_ACPI_STATUS (AE_AML_BAD_OPCODE);
}
/* Create object for result */
ObjDesc = AcpiCmCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
ObjDesc->Integer.Value = TempVal;
/* Truncate value if we are executing from a 32-bit ACPI table */
AcpiAmlTruncateFor32bitTable (ObjDesc, WalkState);
break;
/* Default case is for unknown types */
default:
DEBUG_PRINT (ACPI_ERROR,
("AmlResolveEntryToValue: Node %p - Unknown object type %X\n",
Node, EntryType));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
} /* switch (EntryType) */
/* Put the object descriptor on the stack */
*StackPtr = (void *) ObjDesc;
return_ACPI_STATUS (Status);
}