893 lines
28 KiB
C
893 lines
28 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: nsxfeval - Public interfaces to the ACPI subsystem
|
|
* ACPI Object evaluation interfaces
|
|
* $Revision: 1.17 $
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2005, 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 __NSXFEVAL_C__
|
|
|
|
#include <contrib/dev/acpica/acpi.h>
|
|
#include <contrib/dev/acpica/acnamesp.h>
|
|
#include <contrib/dev/acpica/acinterp.h>
|
|
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME ("nsxfeval")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvaluateObjectTyped
|
|
*
|
|
* PARAMETERS: Handle - Object handle (optional)
|
|
* Pathname - Object pathname (optional)
|
|
* ExternalParams - List of parameters to pass to method,
|
|
* terminated by NULL. May be NULL
|
|
* if no parameters are being passed.
|
|
* ReturnBuffer - Where to put method's return value (if
|
|
* any). If NULL, no value is returned.
|
|
* ReturnType - Expected type of return object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Find and evaluate the given object, passing the given
|
|
* parameters if necessary. One of "Handle" or "Pathname" must
|
|
* be valid (non-null)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvaluateObjectTyped (
|
|
ACPI_HANDLE Handle,
|
|
ACPI_STRING Pathname,
|
|
ACPI_OBJECT_LIST *ExternalParams,
|
|
ACPI_BUFFER *ReturnBuffer,
|
|
ACPI_OBJECT_TYPE ReturnType)
|
|
{
|
|
ACPI_STATUS Status;
|
|
BOOLEAN MustFree = FALSE;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("AcpiEvaluateObjectTyped");
|
|
|
|
|
|
/* Return buffer must be valid */
|
|
|
|
if (!ReturnBuffer)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (ReturnBuffer->Length == ACPI_ALLOCATE_BUFFER)
|
|
{
|
|
MustFree = TRUE;
|
|
}
|
|
|
|
/* Evaluate the object */
|
|
|
|
Status = AcpiEvaluateObject (Handle, Pathname, ExternalParams, ReturnBuffer);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Type ANY means "don't care" */
|
|
|
|
if (ReturnType == ACPI_TYPE_ANY)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
if (ReturnBuffer->Length == 0)
|
|
{
|
|
/* Error because caller specifically asked for a return value */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"No return value\n"));
|
|
|
|
return_ACPI_STATUS (AE_NULL_OBJECT);
|
|
}
|
|
|
|
/* Examine the object type returned from EvaluateObject */
|
|
|
|
if (((ACPI_OBJECT *) ReturnBuffer->Pointer)->Type == ReturnType)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Return object type does not match requested type */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Incorrect return type [%s] requested [%s]\n",
|
|
AcpiUtGetTypeName (((ACPI_OBJECT *) ReturnBuffer->Pointer)->Type),
|
|
AcpiUtGetTypeName (ReturnType)));
|
|
|
|
if (MustFree)
|
|
{
|
|
/* Caller used ACPI_ALLOCATE_BUFFER, free the return buffer */
|
|
|
|
AcpiOsFree (ReturnBuffer->Pointer);
|
|
ReturnBuffer->Pointer = NULL;
|
|
}
|
|
|
|
ReturnBuffer->Length = 0;
|
|
return_ACPI_STATUS (AE_TYPE);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvaluateObject
|
|
*
|
|
* PARAMETERS: Handle - Object handle (optional)
|
|
* Pathname - Object pathname (optional)
|
|
* ExternalParams - List of parameters to pass to method,
|
|
* terminated by NULL. May be NULL
|
|
* if no parameters are being passed.
|
|
* ReturnBuffer - Where to put method's return value (if
|
|
* any). If NULL, no value is returned.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Find and evaluate the given object, passing the given
|
|
* parameters if necessary. One of "Handle" or "Pathname" must
|
|
* be valid (non-null)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvaluateObject (
|
|
ACPI_HANDLE Handle,
|
|
ACPI_STRING Pathname,
|
|
ACPI_OBJECT_LIST *ExternalParams,
|
|
ACPI_BUFFER *ReturnBuffer)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_STATUS Status2;
|
|
ACPI_PARAMETER_INFO Info;
|
|
ACPI_SIZE BufferSpaceNeeded;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("AcpiEvaluateObject");
|
|
|
|
|
|
Info.Node = Handle;
|
|
Info.Parameters = NULL;
|
|
Info.ReturnObject = NULL;
|
|
Info.ParameterType = ACPI_PARAM_ARGS;
|
|
|
|
/*
|
|
* If there are parameters to be passed to the object
|
|
* (which must be a control method), the external objects
|
|
* must be converted to internal objects
|
|
*/
|
|
if (ExternalParams && ExternalParams->Count)
|
|
{
|
|
/*
|
|
* Allocate a new parameter block for the internal objects
|
|
* Add 1 to count to allow for null terminated internal list
|
|
*/
|
|
Info.Parameters = ACPI_MEM_CALLOCATE (
|
|
((ACPI_SIZE) ExternalParams->Count + 1) *
|
|
sizeof (void *));
|
|
if (!Info.Parameters)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/*
|
|
* Convert each external object in the list to an
|
|
* internal object
|
|
*/
|
|
for (i = 0; i < ExternalParams->Count; i++)
|
|
{
|
|
Status = AcpiUtCopyEobjectToIobject (&ExternalParams->Pointer[i],
|
|
&Info.Parameters[i]);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiUtDeleteInternalObjectList (Info.Parameters);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
Info.Parameters[ExternalParams->Count] = NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
* Three major cases:
|
|
* 1) Fully qualified pathname
|
|
* 2) No handle, not fully qualified pathname (error)
|
|
* 3) Valid handle
|
|
*/
|
|
if ((Pathname) &&
|
|
(AcpiNsValidRootPrefix (Pathname[0])))
|
|
{
|
|
/*
|
|
* The path is fully qualified, just evaluate by name
|
|
*/
|
|
Status = AcpiNsEvaluateByName (Pathname, &Info);
|
|
}
|
|
else if (!Handle)
|
|
{
|
|
/*
|
|
* A handle is optional iff a fully qualified pathname
|
|
* is specified. Since we've already handled fully
|
|
* qualified names above, this is an error
|
|
*/
|
|
if (!Pathname)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Both Handle and Pathname are NULL\n"));
|
|
}
|
|
else
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Handle is NULL and Pathname is relative\n"));
|
|
}
|
|
|
|
Status = AE_BAD_PARAMETER;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* We get here if we have a handle -- and if we have a
|
|
* pathname it is relative. The handle will be validated
|
|
* in the lower procedures
|
|
*/
|
|
if (!Pathname)
|
|
{
|
|
/*
|
|
* The null pathname case means the handle is for
|
|
* the actual object to be evaluated
|
|
*/
|
|
Status = AcpiNsEvaluateByHandle (&Info);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Both a Handle and a relative Pathname
|
|
*/
|
|
Status = AcpiNsEvaluateRelative (Pathname, &Info);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* If we are expecting a return value, and all went well above,
|
|
* copy the return value to an external object.
|
|
*/
|
|
if (ReturnBuffer)
|
|
{
|
|
if (!Info.ReturnObject)
|
|
{
|
|
ReturnBuffer->Length = 0;
|
|
}
|
|
else
|
|
{
|
|
if (ACPI_GET_DESCRIPTOR_TYPE (Info.ReturnObject) == ACPI_DESC_TYPE_NAMED)
|
|
{
|
|
/*
|
|
* If we received a NS Node as a return object, this means that
|
|
* the object we are evaluating has nothing interesting to
|
|
* return (such as a mutex, etc.) We return an error because
|
|
* these types are essentially unsupported by this interface.
|
|
* We don't check up front because this makes it easier to add
|
|
* support for various types at a later date if necessary.
|
|
*/
|
|
Status = AE_TYPE;
|
|
Info.ReturnObject = NULL; /* No need to delete a NS Node */
|
|
ReturnBuffer->Length = 0;
|
|
}
|
|
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
/*
|
|
* Find out how large a buffer is needed
|
|
* to contain the returned object
|
|
*/
|
|
Status = AcpiUtGetObjectSize (Info.ReturnObject,
|
|
&BufferSpaceNeeded);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
/* Validate/Allocate/Clear caller buffer */
|
|
|
|
Status = AcpiUtInitializeBuffer (ReturnBuffer,
|
|
BufferSpaceNeeded);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
/*
|
|
* Caller's buffer is too small or a new one can't be allocated
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"Needed buffer size %X, %s\n",
|
|
(UINT32) BufferSpaceNeeded,
|
|
AcpiFormatException (Status)));
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* We have enough space for the object, build it
|
|
*/
|
|
Status = AcpiUtCopyIobjectToEobject (Info.ReturnObject,
|
|
ReturnBuffer);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Info.ReturnObject)
|
|
{
|
|
/*
|
|
* Delete the internal return object. NOTE: Interpreter
|
|
* must be locked to avoid race condition.
|
|
*/
|
|
Status2 = AcpiExEnterInterpreter ();
|
|
if (ACPI_SUCCESS (Status2))
|
|
{
|
|
/*
|
|
* Delete the internal return object. (Or at least
|
|
* decrement the reference count by one)
|
|
*/
|
|
AcpiUtRemoveReference (Info.ReturnObject);
|
|
AcpiExExitInterpreter ();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Free the input parameter list (if we created one),
|
|
*/
|
|
if (Info.Parameters)
|
|
{
|
|
/* Free the allocated parameter block */
|
|
|
|
AcpiUtDeleteInternalObjectList (Info.Parameters);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiWalkNamespace
|
|
*
|
|
* PARAMETERS: Type - ACPI_OBJECT_TYPE to search for
|
|
* StartObject - Handle in namespace where search begins
|
|
* MaxDepth - Depth to which search is to reach
|
|
* UserFunction - Called when an object of "Type" is found
|
|
* Context - Passed to user function
|
|
* ReturnValue - Location where return value of
|
|
* UserFunction is put if terminated early
|
|
*
|
|
* RETURNS Return value from the UserFunction if terminated early.
|
|
* Otherwise, returns NULL.
|
|
*
|
|
* DESCRIPTION: Performs a modified depth-first walk of the namespace tree,
|
|
* starting (and ending) at the object specified by StartHandle.
|
|
* The UserFunction is called whenever an object that matches
|
|
* the type parameter is found. If the user function returns
|
|
* a non-zero value, the search is terminated immediately and this
|
|
* value is returned to the caller.
|
|
*
|
|
* The point of this procedure is to provide a generic namespace
|
|
* walk routine that can be called from multiple places to
|
|
* provide multiple services; the User Function can be tailored
|
|
* to each task, whether it is a print function, a compare
|
|
* function, etc.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiWalkNamespace (
|
|
ACPI_OBJECT_TYPE Type,
|
|
ACPI_HANDLE StartObject,
|
|
UINT32 MaxDepth,
|
|
ACPI_WALK_CALLBACK UserFunction,
|
|
void *Context,
|
|
void **ReturnValue)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("AcpiWalkNamespace");
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if ((Type > ACPI_TYPE_EXTERNAL_MAX) ||
|
|
(!MaxDepth) ||
|
|
(!UserFunction))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Lock the namespace around the walk.
|
|
* The namespace will be unlocked/locked around each call
|
|
* to the user function - since this function
|
|
* must be allowed to make Acpi calls itself.
|
|
*/
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiNsWalkNamespace (Type, StartObject, MaxDepth,
|
|
ACPI_NS_WALK_UNLOCK,
|
|
UserFunction, Context, ReturnValue);
|
|
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetDeviceCallback
|
|
*
|
|
* PARAMETERS: Callback from AcpiGetDevice
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Takes callbacks from WalkNamespace and filters out all non-
|
|
* present devices, or if they specified a HID, it filters based
|
|
* on that.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiNsGetDeviceCallback (
|
|
ACPI_HANDLE ObjHandle,
|
|
UINT32 NestingLevel,
|
|
void *Context,
|
|
void **ReturnValue)
|
|
{
|
|
ACPI_GET_DEVICES_INFO *Info = Context;
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
UINT32 Flags;
|
|
ACPI_DEVICE_ID Hid;
|
|
ACPI_COMPATIBLE_ID_LIST *Cid;
|
|
ACPI_NATIVE_UINT i;
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
Node = AcpiNsMapHandleToNode (ObjHandle);
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
if (!Node)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Run _STA to determine if device is present */
|
|
|
|
Status = AcpiUtExecute_STA (Node, &Flags);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (AE_CTRL_DEPTH);
|
|
}
|
|
|
|
if (!(Flags & 0x01))
|
|
{
|
|
/* Don't return at the device or children of the device if not there */
|
|
|
|
return (AE_CTRL_DEPTH);
|
|
}
|
|
|
|
/* Filter based on device HID & CID */
|
|
|
|
if (Info->Hid != NULL)
|
|
{
|
|
Status = AcpiUtExecute_HID (Node, &Hid);
|
|
if (Status == AE_NOT_FOUND)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
else if (ACPI_FAILURE (Status))
|
|
{
|
|
return (AE_CTRL_DEPTH);
|
|
}
|
|
|
|
if (ACPI_STRNCMP (Hid.Value, Info->Hid, sizeof (Hid.Value)) != 0)
|
|
{
|
|
/* Get the list of Compatible IDs */
|
|
|
|
Status = AcpiUtExecute_CID (Node, &Cid);
|
|
if (Status == AE_NOT_FOUND)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
else if (ACPI_FAILURE (Status))
|
|
{
|
|
return (AE_CTRL_DEPTH);
|
|
}
|
|
|
|
/* Walk the CID list */
|
|
|
|
for (i = 0; i < Cid->Count; i++)
|
|
{
|
|
if (ACPI_STRNCMP (Cid->Id[i].Value, Info->Hid,
|
|
sizeof (ACPI_COMPATIBLE_ID)) != 0)
|
|
{
|
|
ACPI_MEM_FREE (Cid);
|
|
return (AE_OK);
|
|
}
|
|
}
|
|
ACPI_MEM_FREE (Cid);
|
|
}
|
|
}
|
|
|
|
Status = Info->UserFunction (ObjHandle, NestingLevel, Info->Context,
|
|
ReturnValue);
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetDevices
|
|
*
|
|
* PARAMETERS: HID - HID to search for. Can be NULL.
|
|
* UserFunction - Called when a matching object is found
|
|
* Context - Passed to user function
|
|
* ReturnValue - Location where return value of
|
|
* UserFunction is put if terminated early
|
|
*
|
|
* RETURNS Return value from the UserFunction if terminated early.
|
|
* Otherwise, returns NULL.
|
|
*
|
|
* DESCRIPTION: Performs a modified depth-first walk of the namespace tree,
|
|
* starting (and ending) at the object specified by StartHandle.
|
|
* The UserFunction is called whenever an object of type
|
|
* Device is found. If the user function returns
|
|
* a non-zero value, the search is terminated immediately and this
|
|
* value is returned to the caller.
|
|
*
|
|
* This is a wrapper for WalkNamespace, but the callback performs
|
|
* additional filtering. Please see AcpiGetDeviceCallback.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetDevices (
|
|
char *HID,
|
|
ACPI_WALK_CALLBACK UserFunction,
|
|
void *Context,
|
|
void **ReturnValue)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_GET_DEVICES_INFO Info;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("AcpiGetDevices");
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!UserFunction)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* We're going to call their callback from OUR callback, so we need
|
|
* to know what it is, and their context parameter.
|
|
*/
|
|
Info.Context = Context;
|
|
Info.UserFunction = UserFunction;
|
|
Info.Hid = HID;
|
|
|
|
/*
|
|
* Lock the namespace around the walk.
|
|
* The namespace will be unlocked/locked around each call
|
|
* to the user function - since this function
|
|
* must be allowed to make Acpi calls itself.
|
|
*/
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE,
|
|
ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
|
|
ACPI_NS_WALK_UNLOCK,
|
|
AcpiNsGetDeviceCallback, &Info,
|
|
ReturnValue);
|
|
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiAttachData
|
|
*
|
|
* PARAMETERS: ObjHandle - Namespace node
|
|
* Handler - Handler for this attachment
|
|
* Data - Pointer to data to be attached
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Attach arbitrary data and handler to a namespace node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiAttachData (
|
|
ACPI_HANDLE ObjHandle,
|
|
ACPI_OBJECT_HANDLER Handler,
|
|
void *Data)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!ObjHandle ||
|
|
!Handler ||
|
|
!Data)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
/* Convert and validate the handle */
|
|
|
|
Node = AcpiNsMapHandleToNode (ObjHandle);
|
|
if (!Node)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiNsAttachData (Node, Handler, Data);
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDetachData
|
|
*
|
|
* PARAMETERS: ObjHandle - Namespace node handle
|
|
* Handler - Handler used in call to AcpiAttachData
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove data that was previously attached to a node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDetachData (
|
|
ACPI_HANDLE ObjHandle,
|
|
ACPI_OBJECT_HANDLER Handler)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!ObjHandle ||
|
|
!Handler)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
/* Convert and validate the handle */
|
|
|
|
Node = AcpiNsMapHandleToNode (ObjHandle);
|
|
if (!Node)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiNsDetachData (Node, Handler);
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetData
|
|
*
|
|
* PARAMETERS: ObjHandle - Namespace node
|
|
* Handler - Handler used in call to AttachData
|
|
* Data - Where the data is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Retrieve data that was previously attached to a namespace node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetData (
|
|
ACPI_HANDLE ObjHandle,
|
|
ACPI_OBJECT_HANDLER Handler,
|
|
void **Data)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!ObjHandle ||
|
|
!Handler ||
|
|
!Data)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
/* Convert and validate the handle */
|
|
|
|
Node = AcpiNsMapHandleToNode (ObjHandle);
|
|
if (!Node)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiNsGetAttachedData (Node, Handler, Data);
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return (Status);
|
|
}
|
|
|
|
|