mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
1221 lines
34 KiB
C
1221 lines
34 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: nsutils - Utilities for accessing ACPI namespace, accessing
|
|
* parents and siblings and Scope manipulation
|
|
* $Revision: 1.155 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2007, 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 __NSUTILS_C__
|
|
|
|
#include <contrib/dev/acpica/acpi.h>
|
|
#include <contrib/dev/acpica/acnamesp.h>
|
|
#include <contrib/dev/acpica/amlcode.h>
|
|
#include <contrib/dev/acpica/actables.h>
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME ("nsutils")
|
|
|
|
/* Local prototypes */
|
|
|
|
static BOOLEAN
|
|
AcpiNsValidPathSeparator (
|
|
char Sep);
|
|
|
|
#ifdef ACPI_OBSOLETE_FUNCTIONS
|
|
ACPI_NAME
|
|
AcpiNsFindParentName (
|
|
ACPI_NAMESPACE_NODE *NodeToSearch);
|
|
#endif
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsReportError
|
|
*
|
|
* PARAMETERS: ModuleName - Caller's module name (for error output)
|
|
* LineNumber - Caller's line number (for error output)
|
|
* InternalName - Name or path of the namespace node
|
|
* LookupStatus - Exception code from NS lookup
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Print warning message with full pathname
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiNsReportError (
|
|
char *ModuleName,
|
|
UINT32 LineNumber,
|
|
char *InternalName,
|
|
ACPI_STATUS LookupStatus)
|
|
{
|
|
ACPI_STATUS Status;
|
|
UINT32 BadName;
|
|
char *Name = NULL;
|
|
|
|
|
|
AcpiOsPrintf ("ACPI Error (%s-%04d): ", ModuleName, LineNumber);
|
|
|
|
if (LookupStatus == AE_BAD_CHARACTER)
|
|
{
|
|
/* There is a non-ascii character in the name */
|
|
|
|
ACPI_MOVE_32_TO_32 (&BadName, InternalName);
|
|
AcpiOsPrintf ("[0x%4.4X] (NON-ASCII)", BadName);
|
|
}
|
|
else
|
|
{
|
|
/* Convert path to external format */
|
|
|
|
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX,
|
|
InternalName, NULL, &Name);
|
|
|
|
/* Print target name */
|
|
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
AcpiOsPrintf ("[%s]", Name);
|
|
}
|
|
else
|
|
{
|
|
AcpiOsPrintf ("[COULD NOT EXTERNALIZE NAME]");
|
|
}
|
|
|
|
if (Name)
|
|
{
|
|
ACPI_FREE (Name);
|
|
}
|
|
}
|
|
|
|
AcpiOsPrintf (" Namespace lookup failure, %s\n",
|
|
AcpiFormatException (LookupStatus));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsReportMethodError
|
|
*
|
|
* PARAMETERS: ModuleName - Caller's module name (for error output)
|
|
* LineNumber - Caller's line number (for error output)
|
|
* Message - Error message to use on failure
|
|
* PrefixNode - Prefix relative to the path
|
|
* Path - Path to the node (optional)
|
|
* MethodStatus - Execution status
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Print warning message with full pathname
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiNsReportMethodError (
|
|
char *ModuleName,
|
|
UINT32 LineNumber,
|
|
char *Message,
|
|
ACPI_NAMESPACE_NODE *PrefixNode,
|
|
char *Path,
|
|
ACPI_STATUS MethodStatus)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node = PrefixNode;
|
|
|
|
|
|
AcpiOsPrintf ("ACPI Error (%s-%04d): ", ModuleName, LineNumber);
|
|
|
|
if (Path)
|
|
{
|
|
Status = AcpiNsGetNode (PrefixNode, Path, ACPI_NS_NO_UPSEARCH,
|
|
&Node);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiOsPrintf ("[Could not get node by pathname]");
|
|
}
|
|
}
|
|
|
|
AcpiNsPrintNodePathname (Node, Message);
|
|
AcpiOsPrintf (", %s\n", AcpiFormatException (MethodStatus));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsPrintNodePathname
|
|
*
|
|
* PARAMETERS: Node - Object
|
|
* Message - Prefix message
|
|
*
|
|
* DESCRIPTION: Print an object's full namespace pathname
|
|
* Manages allocation/freeing of a pathname buffer
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiNsPrintNodePathname (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
char *Message)
|
|
{
|
|
ACPI_BUFFER Buffer;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
if (!Node)
|
|
{
|
|
AcpiOsPrintf ("[NULL NAME]");
|
|
return;
|
|
}
|
|
|
|
/* Convert handle to full pathname and print it (with supplied message) */
|
|
|
|
Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
|
|
|
|
Status = AcpiNsHandleToPathname (Node, &Buffer);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
if (Message)
|
|
{
|
|
AcpiOsPrintf ("%s ", Message);
|
|
}
|
|
|
|
AcpiOsPrintf ("[%s] (Node %p)", (char *) Buffer.Pointer, Node);
|
|
ACPI_FREE (Buffer.Pointer);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsValidRootPrefix
|
|
*
|
|
* PARAMETERS: Prefix - Character to be checked
|
|
*
|
|
* RETURN: TRUE if a valid prefix
|
|
*
|
|
* DESCRIPTION: Check if a character is a valid ACPI Root prefix
|
|
*
|
|
******************************************************************************/
|
|
|
|
BOOLEAN
|
|
AcpiNsValidRootPrefix (
|
|
char Prefix)
|
|
{
|
|
|
|
return ((BOOLEAN) (Prefix == '\\'));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsValidPathSeparator
|
|
*
|
|
* PARAMETERS: Sep - Character to be checked
|
|
*
|
|
* RETURN: TRUE if a valid path separator
|
|
*
|
|
* DESCRIPTION: Check if a character is a valid ACPI path separator
|
|
*
|
|
******************************************************************************/
|
|
|
|
static BOOLEAN
|
|
AcpiNsValidPathSeparator (
|
|
char Sep)
|
|
{
|
|
|
|
return ((BOOLEAN) (Sep == '.'));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetType
|
|
*
|
|
* PARAMETERS: Node - Parent Node to be examined
|
|
*
|
|
* RETURN: Type field from Node whose handle is passed
|
|
*
|
|
* DESCRIPTION: Return the type of a Namespace node
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_OBJECT_TYPE
|
|
AcpiNsGetType (
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
ACPI_FUNCTION_TRACE (NsGetType);
|
|
|
|
|
|
if (!Node)
|
|
{
|
|
ACPI_WARNING ((AE_INFO, "Null Node parameter"));
|
|
return_UINT32 (ACPI_TYPE_ANY);
|
|
}
|
|
|
|
return_UINT32 ((ACPI_OBJECT_TYPE) Node->Type);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsLocal
|
|
*
|
|
* PARAMETERS: Type - A namespace object type
|
|
*
|
|
* RETURN: LOCAL if names must be found locally in objects of the
|
|
* passed type, 0 if enclosing scopes should be searched
|
|
*
|
|
* DESCRIPTION: Returns scope rule for the given object type.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiNsLocal (
|
|
ACPI_OBJECT_TYPE Type)
|
|
{
|
|
ACPI_FUNCTION_TRACE (NsLocal);
|
|
|
|
|
|
if (!AcpiUtValidObjectType (Type))
|
|
{
|
|
/* Type code out of range */
|
|
|
|
ACPI_WARNING ((AE_INFO, "Invalid Object Type %X", Type));
|
|
return_UINT32 (ACPI_NS_NORMAL);
|
|
}
|
|
|
|
return_UINT32 ((UINT32) AcpiGbl_NsProperties[Type] & ACPI_NS_LOCAL);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetInternalNameLength
|
|
*
|
|
* PARAMETERS: Info - Info struct initialized with the
|
|
* external name pointer.
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Calculate the length of the internal (AML) namestring
|
|
* corresponding to the external (ASL) namestring.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiNsGetInternalNameLength (
|
|
ACPI_NAMESTRING_INFO *Info)
|
|
{
|
|
char *NextExternalChar;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
NextExternalChar = Info->ExternalName;
|
|
Info->NumCarats = 0;
|
|
Info->NumSegments = 0;
|
|
Info->FullyQualified = FALSE;
|
|
|
|
/*
|
|
* For the internal name, the required length is 4 bytes per segment, plus
|
|
* 1 each for RootPrefix, MultiNamePrefixOp, segment count, trailing null
|
|
* (which is not really needed, but no there's harm in putting it there)
|
|
*
|
|
* strlen() + 1 covers the first NameSeg, which has no path separator
|
|
*/
|
|
if (AcpiNsValidRootPrefix (NextExternalChar[0]))
|
|
{
|
|
Info->FullyQualified = TRUE;
|
|
NextExternalChar++;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Handle Carat prefixes
|
|
*/
|
|
while (*NextExternalChar == '^')
|
|
{
|
|
Info->NumCarats++;
|
|
NextExternalChar++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Determine the number of ACPI name "segments" by counting the number of
|
|
* path separators within the string. Start with one segment since the
|
|
* segment count is [(# separators) + 1], and zero separators is ok.
|
|
*/
|
|
if (*NextExternalChar)
|
|
{
|
|
Info->NumSegments = 1;
|
|
for (i = 0; NextExternalChar[i]; i++)
|
|
{
|
|
if (AcpiNsValidPathSeparator (NextExternalChar[i]))
|
|
{
|
|
Info->NumSegments++;
|
|
}
|
|
}
|
|
}
|
|
|
|
Info->Length = (ACPI_NAME_SIZE * Info->NumSegments) +
|
|
4 + Info->NumCarats;
|
|
|
|
Info->NextExternalChar = NextExternalChar;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsBuildInternalName
|
|
*
|
|
* PARAMETERS: Info - Info struct fully initialized
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Construct the internal (AML) namestring
|
|
* corresponding to the external (ASL) namestring.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsBuildInternalName (
|
|
ACPI_NAMESTRING_INFO *Info)
|
|
{
|
|
UINT32 NumSegments = Info->NumSegments;
|
|
char *InternalName = Info->InternalName;
|
|
char *ExternalName = Info->NextExternalChar;
|
|
char *Result = NULL;
|
|
ACPI_NATIVE_UINT i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (NsBuildInternalName);
|
|
|
|
|
|
/* Setup the correct prefixes, counts, and pointers */
|
|
|
|
if (Info->FullyQualified)
|
|
{
|
|
InternalName[0] = '\\';
|
|
|
|
if (NumSegments <= 1)
|
|
{
|
|
Result = &InternalName[1];
|
|
}
|
|
else if (NumSegments == 2)
|
|
{
|
|
InternalName[1] = AML_DUAL_NAME_PREFIX;
|
|
Result = &InternalName[2];
|
|
}
|
|
else
|
|
{
|
|
InternalName[1] = AML_MULTI_NAME_PREFIX_OP;
|
|
InternalName[2] = (char) NumSegments;
|
|
Result = &InternalName[3];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Not fully qualified.
|
|
* Handle Carats first, then append the name segments
|
|
*/
|
|
i = 0;
|
|
if (Info->NumCarats)
|
|
{
|
|
for (i = 0; i < Info->NumCarats; i++)
|
|
{
|
|
InternalName[i] = '^';
|
|
}
|
|
}
|
|
|
|
if (NumSegments <= 1)
|
|
{
|
|
Result = &InternalName[i];
|
|
}
|
|
else if (NumSegments == 2)
|
|
{
|
|
InternalName[i] = AML_DUAL_NAME_PREFIX;
|
|
Result = &InternalName[(ACPI_NATIVE_UINT) (i+1)];
|
|
}
|
|
else
|
|
{
|
|
InternalName[i] = AML_MULTI_NAME_PREFIX_OP;
|
|
InternalName[(ACPI_NATIVE_UINT) (i+1)] = (char) NumSegments;
|
|
Result = &InternalName[(ACPI_NATIVE_UINT) (i+2)];
|
|
}
|
|
}
|
|
|
|
/* Build the name (minus path separators) */
|
|
|
|
for (; NumSegments; NumSegments--)
|
|
{
|
|
for (i = 0; i < ACPI_NAME_SIZE; i++)
|
|
{
|
|
if (AcpiNsValidPathSeparator (*ExternalName) ||
|
|
(*ExternalName == 0))
|
|
{
|
|
/* Pad the segment with underscore(s) if segment is short */
|
|
|
|
Result[i] = '_';
|
|
}
|
|
else
|
|
{
|
|
/* Convert the character to uppercase and save it */
|
|
|
|
Result[i] = (char) ACPI_TOUPPER ((int) *ExternalName);
|
|
ExternalName++;
|
|
}
|
|
}
|
|
|
|
/* Now we must have a path separator, or the pathname is bad */
|
|
|
|
if (!AcpiNsValidPathSeparator (*ExternalName) &&
|
|
(*ExternalName != 0))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Move on the next segment */
|
|
|
|
ExternalName++;
|
|
Result += ACPI_NAME_SIZE;
|
|
}
|
|
|
|
/* Terminate the string */
|
|
|
|
*Result = 0;
|
|
|
|
if (Info->FullyQualified)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Returning [%p] (abs) \"\\%s\"\n",
|
|
InternalName, InternalName));
|
|
}
|
|
else
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Returning [%p] (rel) \"%s\"\n",
|
|
InternalName, InternalName));
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsInternalizeName
|
|
*
|
|
* PARAMETERS: *ExternalName - External representation of name
|
|
* **Converted Name - Where to return the resulting
|
|
* internal represention of the name
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0")
|
|
* to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
|
|
*
|
|
*******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsInternalizeName (
|
|
char *ExternalName,
|
|
char **ConvertedName)
|
|
{
|
|
char *InternalName;
|
|
ACPI_NAMESTRING_INFO Info;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (NsInternalizeName);
|
|
|
|
|
|
if ((!ExternalName) ||
|
|
(*ExternalName == 0) ||
|
|
(!ConvertedName))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the length of the new internal name */
|
|
|
|
Info.ExternalName = ExternalName;
|
|
AcpiNsGetInternalNameLength (&Info);
|
|
|
|
/* We need a segment to store the internal name */
|
|
|
|
InternalName = ACPI_ALLOCATE_ZEROED (Info.Length);
|
|
if (!InternalName)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Build the name */
|
|
|
|
Info.InternalName = InternalName;
|
|
Status = AcpiNsBuildInternalName (&Info);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_FREE (InternalName);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
*ConvertedName = InternalName;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsExternalizeName
|
|
*
|
|
* PARAMETERS: InternalNameLength - Lenth of the internal name below
|
|
* InternalName - Internal representation of name
|
|
* ConvertedNameLength - Where the length is returned
|
|
* ConvertedName - Where the resulting external name
|
|
* is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
|
|
* to its external (printable) form (e.g. "\_PR_.CPU0")
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsExternalizeName (
|
|
UINT32 InternalNameLength,
|
|
char *InternalName,
|
|
UINT32 *ConvertedNameLength,
|
|
char **ConvertedName)
|
|
{
|
|
ACPI_NATIVE_UINT NamesIndex = 0;
|
|
ACPI_NATIVE_UINT NumSegments = 0;
|
|
ACPI_NATIVE_UINT RequiredLength;
|
|
ACPI_NATIVE_UINT PrefixLength = 0;
|
|
ACPI_NATIVE_UINT i = 0;
|
|
ACPI_NATIVE_UINT j = 0;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (NsExternalizeName);
|
|
|
|
|
|
if (!InternalNameLength ||
|
|
!InternalName ||
|
|
!ConvertedName)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Check for a prefix (one '\' | one or more '^').
|
|
*/
|
|
switch (InternalName[0])
|
|
{
|
|
case '\\':
|
|
PrefixLength = 1;
|
|
break;
|
|
|
|
case '^':
|
|
for (i = 0; i < InternalNameLength; i++)
|
|
{
|
|
if (InternalName[i] == '^')
|
|
{
|
|
PrefixLength = i + 1;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i == InternalNameLength)
|
|
{
|
|
PrefixLength = i;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Check for object names. Note that there could be 0-255 of these
|
|
* 4-byte elements.
|
|
*/
|
|
if (PrefixLength < InternalNameLength)
|
|
{
|
|
switch (InternalName[PrefixLength])
|
|
{
|
|
case AML_MULTI_NAME_PREFIX_OP:
|
|
|
|
/* <count> 4-byte names */
|
|
|
|
NamesIndex = PrefixLength + 2;
|
|
NumSegments = (ACPI_NATIVE_UINT) (UINT8)
|
|
InternalName[(ACPI_NATIVE_UINT) (PrefixLength + 1)];
|
|
break;
|
|
|
|
case AML_DUAL_NAME_PREFIX:
|
|
|
|
/* Two 4-byte names */
|
|
|
|
NamesIndex = PrefixLength + 1;
|
|
NumSegments = 2;
|
|
break;
|
|
|
|
case 0:
|
|
|
|
/* NullName */
|
|
|
|
NamesIndex = 0;
|
|
NumSegments = 0;
|
|
break;
|
|
|
|
default:
|
|
|
|
/* one 4-byte name */
|
|
|
|
NamesIndex = PrefixLength;
|
|
NumSegments = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Calculate the length of ConvertedName, which equals the length
|
|
* of the prefix, length of all object names, length of any required
|
|
* punctuation ('.') between object names, plus the NULL terminator.
|
|
*/
|
|
RequiredLength = PrefixLength + (4 * NumSegments) +
|
|
((NumSegments > 0) ? (NumSegments - 1) : 0) + 1;
|
|
|
|
/*
|
|
* Check to see if we're still in bounds. If not, there's a problem
|
|
* with InternalName (invalid format).
|
|
*/
|
|
if (RequiredLength > InternalNameLength)
|
|
{
|
|
ACPI_ERROR ((AE_INFO, "Invalid internal name"));
|
|
return_ACPI_STATUS (AE_BAD_PATHNAME);
|
|
}
|
|
|
|
/*
|
|
* Build ConvertedName
|
|
*/
|
|
*ConvertedName = ACPI_ALLOCATE_ZEROED (RequiredLength);
|
|
if (!(*ConvertedName))
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
j = 0;
|
|
|
|
for (i = 0; i < PrefixLength; i++)
|
|
{
|
|
(*ConvertedName)[j++] = InternalName[i];
|
|
}
|
|
|
|
if (NumSegments > 0)
|
|
{
|
|
for (i = 0; i < NumSegments; i++)
|
|
{
|
|
if (i > 0)
|
|
{
|
|
(*ConvertedName)[j++] = '.';
|
|
}
|
|
|
|
(*ConvertedName)[j++] = InternalName[NamesIndex++];
|
|
(*ConvertedName)[j++] = InternalName[NamesIndex++];
|
|
(*ConvertedName)[j++] = InternalName[NamesIndex++];
|
|
(*ConvertedName)[j++] = InternalName[NamesIndex++];
|
|
}
|
|
}
|
|
|
|
if (ConvertedNameLength)
|
|
{
|
|
*ConvertedNameLength = (UINT32) RequiredLength;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsMapHandleToNode
|
|
*
|
|
* PARAMETERS: Handle - Handle to be converted to an Node
|
|
*
|
|
* RETURN: A Name table entry pointer
|
|
*
|
|
* DESCRIPTION: Convert a namespace handle to a real Node
|
|
*
|
|
* Note: Real integer handles would allow for more verification
|
|
* and keep all pointers within this subsystem - however this introduces
|
|
* more (and perhaps unnecessary) overhead.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_NAMESPACE_NODE *
|
|
AcpiNsMapHandleToNode (
|
|
ACPI_HANDLE Handle)
|
|
{
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/*
|
|
* Simple implementation
|
|
*/
|
|
if ((!Handle) || (Handle == ACPI_ROOT_OBJECT))
|
|
{
|
|
return (AcpiGbl_RootNode);
|
|
}
|
|
|
|
/* We can at least attempt to verify the handle */
|
|
|
|
if (ACPI_GET_DESCRIPTOR_TYPE (Handle) != ACPI_DESC_TYPE_NAMED)
|
|
{
|
|
return (NULL);
|
|
}
|
|
|
|
return (ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Handle));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsConvertEntryToHandle
|
|
*
|
|
* PARAMETERS: Node - Node to be converted to a Handle
|
|
*
|
|
* RETURN: A user handle
|
|
*
|
|
* DESCRIPTION: Convert a real Node to a namespace handle
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_HANDLE
|
|
AcpiNsConvertEntryToHandle (
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
|
|
|
|
/*
|
|
* Simple implementation for now;
|
|
*/
|
|
return ((ACPI_HANDLE) Node);
|
|
|
|
|
|
/* Example future implementation ---------------------
|
|
|
|
if (!Node)
|
|
{
|
|
return (NULL);
|
|
}
|
|
|
|
if (Node == AcpiGbl_RootNode)
|
|
{
|
|
return (ACPI_ROOT_OBJECT);
|
|
}
|
|
|
|
|
|
return ((ACPI_HANDLE) Node);
|
|
------------------------------------------------------*/
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsTerminate
|
|
*
|
|
* PARAMETERS: none
|
|
*
|
|
* RETURN: none
|
|
*
|
|
* DESCRIPTION: free memory allocated for namespace and ACPI table storage.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiNsTerminate (
|
|
void)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (NsTerminate);
|
|
|
|
|
|
/*
|
|
* 1) Free the entire namespace -- all nodes and objects
|
|
*
|
|
* Delete all object descriptors attached to namepsace nodes
|
|
*/
|
|
AcpiNsDeleteNamespaceSubtree (AcpiGbl_RootNode);
|
|
|
|
/* Detach any objects attached to the root */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (AcpiGbl_RootNode);
|
|
if (ObjDesc)
|
|
{
|
|
AcpiNsDetachObject (AcpiGbl_RootNode);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Namespace freed\n"));
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsOpensScope
|
|
*
|
|
* PARAMETERS: Type - A valid namespace type
|
|
*
|
|
* RETURN: NEWSCOPE if the passed type "opens a name scope" according
|
|
* to the ACPI specification, else 0
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiNsOpensScope (
|
|
ACPI_OBJECT_TYPE Type)
|
|
{
|
|
ACPI_FUNCTION_TRACE_STR (NsOpensScope, AcpiUtGetTypeName (Type));
|
|
|
|
|
|
if (!AcpiUtValidObjectType (Type))
|
|
{
|
|
/* type code out of range */
|
|
|
|
ACPI_WARNING ((AE_INFO, "Invalid Object Type %X", Type));
|
|
return_UINT32 (ACPI_NS_NORMAL);
|
|
}
|
|
|
|
return_UINT32 (((UINT32) AcpiGbl_NsProperties[Type]) & ACPI_NS_NEWSCOPE);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetNode
|
|
*
|
|
* PARAMETERS: *Pathname - Name to be found, in external (ASL) format. The
|
|
* \ (backslash) and ^ (carat) prefixes, and the
|
|
* . (period) to separate segments are supported.
|
|
* PrefixNode - Root of subtree to be searched, or NS_ALL for the
|
|
* root of the name space. If Name is fully
|
|
* qualified (first INT8 is '\'), the passed value
|
|
* of Scope will not be accessed.
|
|
* Flags - Used to indicate whether to perform upsearch or
|
|
* not.
|
|
* ReturnNode - Where the Node is returned
|
|
*
|
|
* DESCRIPTION: Look up a name relative to a given scope and return the
|
|
* corresponding Node. NOTE: Scope can be null.
|
|
*
|
|
* MUTEX: Locks namespace
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsGetNode (
|
|
ACPI_NAMESPACE_NODE *PrefixNode,
|
|
char *Pathname,
|
|
UINT32 Flags,
|
|
ACPI_NAMESPACE_NODE **ReturnNode)
|
|
{
|
|
ACPI_GENERIC_STATE ScopeInfo;
|
|
ACPI_STATUS Status;
|
|
char *InternalPath;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (NsGetNode, Pathname);
|
|
|
|
|
|
if (!Pathname)
|
|
{
|
|
*ReturnNode = PrefixNode;
|
|
if (!PrefixNode)
|
|
{
|
|
*ReturnNode = AcpiGbl_RootNode;
|
|
}
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Convert path to internal representation */
|
|
|
|
Status = AcpiNsInternalizeName (Pathname, &InternalPath);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Must lock namespace during lookup */
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Setup lookup scope (search starting point) */
|
|
|
|
ScopeInfo.Scope.Node = PrefixNode;
|
|
|
|
/* Lookup the name in the namespace */
|
|
|
|
Status = AcpiNsLookup (&ScopeInfo, InternalPath, ACPI_TYPE_ANY,
|
|
ACPI_IMODE_EXECUTE, (Flags | ACPI_NS_DONT_OPEN_SCOPE),
|
|
NULL, ReturnNode);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%s, %s\n",
|
|
Pathname, AcpiFormatException (Status)));
|
|
}
|
|
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
|
|
Cleanup:
|
|
ACPI_FREE (InternalPath);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetParentNode
|
|
*
|
|
* PARAMETERS: Node - Current table entry
|
|
*
|
|
* RETURN: Parent entry of the given entry
|
|
*
|
|
* DESCRIPTION: Obtain the parent entry for a given entry in the namespace.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_NAMESPACE_NODE *
|
|
AcpiNsGetParentNode (
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
if (!Node)
|
|
{
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Walk to the end of this peer list. The last entry is marked with a flag
|
|
* and the peer pointer is really a pointer back to the parent. This saves
|
|
* putting a parent back pointer in each and every named object!
|
|
*/
|
|
while (!(Node->Flags & ANOBJ_END_OF_PEER_LIST))
|
|
{
|
|
Node = Node->Peer;
|
|
}
|
|
|
|
return (Node->Peer);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetNextValidNode
|
|
*
|
|
* PARAMETERS: Node - Current table entry
|
|
*
|
|
* RETURN: Next valid Node in the linked node list. NULL if no more valid
|
|
* nodes.
|
|
*
|
|
* DESCRIPTION: Find the next valid node within a name table.
|
|
* Useful for implementing NULL-end-of-list loops.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_NAMESPACE_NODE *
|
|
AcpiNsGetNextValidNode (
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
|
|
/* If we are at the end of this peer list, return NULL */
|
|
|
|
if (Node->Flags & ANOBJ_END_OF_PEER_LIST)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/* Otherwise just return the next peer */
|
|
|
|
return (Node->Peer);
|
|
}
|
|
|
|
|
|
#ifdef ACPI_OBSOLETE_FUNCTIONS
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsFindParentName
|
|
*
|
|
* PARAMETERS: *ChildNode - Named Obj whose name is to be found
|
|
*
|
|
* RETURN: The ACPI name
|
|
*
|
|
* DESCRIPTION: Search for the given obj in its parent scope and return the
|
|
* name segment, or "????" if the parent name can't be found
|
|
* (which "should not happen").
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_NAME
|
|
AcpiNsFindParentName (
|
|
ACPI_NAMESPACE_NODE *ChildNode)
|
|
{
|
|
ACPI_NAMESPACE_NODE *ParentNode;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (NsFindParentName);
|
|
|
|
|
|
if (ChildNode)
|
|
{
|
|
/* Valid entry. Get the parent Node */
|
|
|
|
ParentNode = AcpiNsGetParentNode (ChildNode);
|
|
if (ParentNode)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Parent of %p [%4.4s] is %p [%4.4s]\n",
|
|
ChildNode, AcpiUtGetNodeName (ChildNode),
|
|
ParentNode, AcpiUtGetNodeName (ParentNode)));
|
|
|
|
if (ParentNode->Name.Integer)
|
|
{
|
|
return_VALUE ((ACPI_NAME) ParentNode->Name.Integer);
|
|
}
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Unable to find parent of %p (%4.4s)\n",
|
|
ChildNode, AcpiUtGetNodeName (ChildNode)));
|
|
}
|
|
|
|
return_VALUE (ACPI_UNKNOWN_NAME);
|
|
}
|
|
#endif
|
|
|
|
|