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Diffstat (limited to 'sys/contrib/dev/acpica/nsutils.c')
| -rw-r--r-- | sys/contrib/dev/acpica/nsutils.c | 1220 |
1 files changed, 0 insertions, 1220 deletions
diff --git a/sys/contrib/dev/acpica/nsutils.c b/sys/contrib/dev/acpica/nsutils.c deleted file mode 100644 index 7aac1f3..0000000 --- a/sys/contrib/dev/acpica/nsutils.c +++ /dev/null @@ -1,1220 +0,0 @@ -/****************************************************************************** - * - * 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 - - |
