421 lines
14 KiB
C
421 lines
14 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: nsxfname - Public interfaces to the ACPI subsystem
|
|
* ACPI Namespace oriented interfaces
|
|
* $Revision: 91 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2002, 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 __NSXFNAME_C__
|
|
|
|
#include "acpi.h"
|
|
#include "acnamesp.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME ("nsxfname")
|
|
|
|
|
|
/****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetHandle
|
|
*
|
|
* PARAMETERS: Parent - Object to search under (search scope).
|
|
* PathName - Pointer to an asciiz string containing the
|
|
* name
|
|
* RetHandle - Where the return handle is placed
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: This routine will search for a caller specified name in the
|
|
* name space. The caller can restrict the search region by
|
|
* specifying a non NULL parent. The parent value is itself a
|
|
* namespace handle.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetHandle (
|
|
ACPI_HANDLE Parent,
|
|
ACPI_STRING Pathname,
|
|
ACPI_HANDLE *RetHandle)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node = NULL;
|
|
ACPI_NAMESPACE_NODE *PrefixNode = NULL;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/* Parameter Validation */
|
|
|
|
if (!RetHandle || !Pathname)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Convert a parent handle to a prefix node */
|
|
|
|
if (Parent)
|
|
{
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
PrefixNode = AcpiNsMapHandleToNode (Parent);
|
|
if (!PrefixNode)
|
|
{
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
}
|
|
|
|
/* Special case for root, since we can't search for it */
|
|
|
|
if (ACPI_STRCMP (Pathname, ACPI_NS_ROOT_PATH) == 0)
|
|
{
|
|
*RetHandle = AcpiNsConvertEntryToHandle (AcpiGbl_RootNode);
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Find the Node and convert to a handle
|
|
*/
|
|
Status = AcpiNsGetNodeByPath (Pathname, PrefixNode, ACPI_NS_NO_UPSEARCH, &Node);
|
|
|
|
*RetHandle = NULL;
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
*RetHandle = AcpiNsConvertEntryToHandle (Node);
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetName
|
|
*
|
|
* PARAMETERS: Handle - Handle to be converted to a pathname
|
|
* NameType - Full pathname or single segment
|
|
* Buffer - Buffer for returned path
|
|
*
|
|
* RETURN: Pointer to a string containing the fully qualified Name.
|
|
*
|
|
* DESCRIPTION: This routine returns the fully qualified name associated with
|
|
* the Handle parameter. This and the AcpiPathnameToHandle are
|
|
* complementary functions.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetName (
|
|
ACPI_HANDLE Handle,
|
|
UINT32 NameType,
|
|
ACPI_BUFFER *Buffer)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (NameType > ACPI_NAME_TYPE_MAX)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtValidateBuffer (Buffer);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
if (NameType == ACPI_FULL_PATHNAME)
|
|
{
|
|
/* Get the full pathname (From the namespace root) */
|
|
|
|
Status = AcpiNsHandleToPathname (Handle, Buffer);
|
|
return (Status);
|
|
}
|
|
|
|
/*
|
|
* Wants the single segment ACPI name.
|
|
* Validate handle and convert to a namespace Node
|
|
*/
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
Node = AcpiNsMapHandleToNode (Handle);
|
|
if (!Node)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Validate/Allocate/Clear caller buffer */
|
|
|
|
Status = AcpiUtInitializeBuffer (Buffer, PATH_SEGMENT_LENGTH);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Just copy the ACPI name from the Node and zero terminate it */
|
|
|
|
ACPI_STRNCPY (Buffer->Pointer, Node->Name.Ascii,
|
|
ACPI_NAME_SIZE);
|
|
((NATIVE_CHAR *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0;
|
|
Status = AE_OK;
|
|
|
|
|
|
UnlockAndExit:
|
|
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetObjectInfo
|
|
*
|
|
* PARAMETERS: Handle - Object Handle
|
|
* Info - Where the info is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Returns information about an object as gleaned from the
|
|
* namespace node and possibly by running several standard
|
|
* control methods (Such as in the case of a device.)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetObjectInfo (
|
|
ACPI_HANDLE Handle,
|
|
ACPI_DEVICE_INFO *Info)
|
|
{
|
|
ACPI_DEVICE_ID Hid;
|
|
ACPI_DEVICE_ID Uid;
|
|
ACPI_STATUS Status;
|
|
UINT32 DeviceStatus = 0;
|
|
ACPI_INTEGER Address = 0;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!Handle || !Info)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
Node = AcpiNsMapHandleToNode (Handle);
|
|
if (!Node)
|
|
{
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Info->Type = Node->Type;
|
|
Info->Name = Node->Name.Integer;
|
|
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
/*
|
|
* If not a device, we are all done.
|
|
*/
|
|
if (Info->Type != ACPI_TYPE_DEVICE)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*
|
|
* Get extra info for ACPI devices only. Run the
|
|
* _HID, _UID, _STA, and _ADR methods. Note: none
|
|
* of these methods are required, so they may or may
|
|
* not be present. The Info->Valid bits are used
|
|
* to indicate which methods ran successfully.
|
|
*/
|
|
Info->Valid = 0;
|
|
|
|
/* Execute the _HID method and save the result */
|
|
|
|
Status = AcpiUtExecute_HID (Node, &Hid);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
ACPI_STRNCPY (Info->HardwareId, Hid.Buffer, sizeof(Info->HardwareId));
|
|
Info->Valid |= ACPI_VALID_HID;
|
|
}
|
|
|
|
/* Execute the _UID method and save the result */
|
|
|
|
Status = AcpiUtExecute_UID (Node, &Uid);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
ACPI_STRCPY (Info->UniqueId, Uid.Buffer);
|
|
Info->Valid |= ACPI_VALID_UID;
|
|
}
|
|
|
|
/*
|
|
* Execute the _STA method and save the result
|
|
* _STA is not always present
|
|
*/
|
|
Status = AcpiUtExecute_STA (Node, &DeviceStatus);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
Info->CurrentStatus = DeviceStatus;
|
|
Info->Valid |= ACPI_VALID_STA;
|
|
}
|
|
|
|
/*
|
|
* Execute the _ADR method and save result if successful
|
|
* _ADR is not always present
|
|
*/
|
|
Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR,
|
|
Node, &Address);
|
|
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
Info->Address = Address;
|
|
Info->Valid |= ACPI_VALID_ADR;
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|