- 99% of the code is Intel's ACPICA. The license is compliant with BSD and GNU and virtually all systems that use ACPI use this code, For instance it is part of the Linux kernel. - The only minix specific files are acpi.c osminixxf.c platform/acminix.h and include/minix/acpi.h - At the moment the driver does not register interrupt hooks which I believe is mainly for handling PnP, events like "battery level is low" and power management. Should not be difficult to add it if need be. - The interface to the outside world is virtually non-existent except a trivial message based service for PCI driver to query which device is connected to what IRQ line. This will evolve as more components start using this driver. VM, Scheduler and IOMMU are the possible users right now. - because of dependency on a native 64bit (long long, part of c99) it is compiled only with a gnu-like compilers which in case of Minix includes gcc llvm-gcc and clang
828 lines
25 KiB
C
828 lines
25 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utdelete - object deletion and reference count utilities
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2010, 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 __UTDELETE_C__
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|
|
|
#include "acpi.h"
|
|
#include "accommon.h"
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#include "acinterp.h"
|
|
#include "acnamesp.h"
|
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#include "acevents.h"
|
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|
|
|
|
#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME ("utdelete")
|
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|
|
/* Local prototypes */
|
|
|
|
static void
|
|
AcpiUtDeleteInternalObj (
|
|
ACPI_OPERAND_OBJECT *Object);
|
|
|
|
static void
|
|
AcpiUtUpdateRefCount (
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
UINT32 Action);
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtDeleteInternalObj
|
|
*
|
|
* PARAMETERS: Object - Object to be deleted
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*
|
|
* RETURN: None
|
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*
|
|
* DESCRIPTION: Low level object deletion, after reference counts have been
|
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* updated (All reference counts, including sub-objects!)
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|
*
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|
******************************************************************************/
|
|
|
|
static void
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|
AcpiUtDeleteInternalObj (
|
|
ACPI_OPERAND_OBJECT *Object)
|
|
{
|
|
void *ObjPointer = NULL;
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|
ACPI_OPERAND_OBJECT *HandlerDesc;
|
|
ACPI_OPERAND_OBJECT *SecondDesc;
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|
ACPI_OPERAND_OBJECT *NextDesc;
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|
ACPI_OPERAND_OBJECT **LastObjPtr;
|
|
|
|
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ACPI_FUNCTION_TRACE_PTR (UtDeleteInternalObj, Object);
|
|
|
|
|
|
if (!Object)
|
|
{
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|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* Must delete or free any pointers within the object that are not
|
|
* actual ACPI objects (for example, a raw buffer pointer).
|
|
*/
|
|
switch (Object->Common.Type)
|
|
{
|
|
case ACPI_TYPE_STRING:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** String %p, ptr %p\n",
|
|
Object, Object->String.Pointer));
|
|
|
|
/* Free the actual string buffer */
|
|
|
|
if (!(Object->Common.Flags & AOPOBJ_STATIC_POINTER))
|
|
{
|
|
/* But only if it is NOT a pointer into an ACPI table */
|
|
|
|
ObjPointer = Object->String.Pointer;
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** Buffer %p, ptr %p\n",
|
|
Object, Object->Buffer.Pointer));
|
|
|
|
/* Free the actual buffer */
|
|
|
|
if (!(Object->Common.Flags & AOPOBJ_STATIC_POINTER))
|
|
{
|
|
/* But only if it is NOT a pointer into an ACPI table */
|
|
|
|
ObjPointer = Object->Buffer.Pointer;
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, " **** Package of count %X\n",
|
|
Object->Package.Count));
|
|
|
|
/*
|
|
* Elements of the package are not handled here, they are deleted
|
|
* separately
|
|
*/
|
|
|
|
/* Free the (variable length) element pointer array */
|
|
|
|
ObjPointer = Object->Package.Elements;
|
|
break;
|
|
|
|
|
|
/*
|
|
* These objects have a possible list of notify handlers.
|
|
* Device object also may have a GPE block.
|
|
*/
|
|
case ACPI_TYPE_DEVICE:
|
|
|
|
if (Object->Device.GpeBlock)
|
|
{
|
|
(void) AcpiEvDeleteGpeBlock (Object->Device.GpeBlock);
|
|
}
|
|
|
|
/*lint -fallthrough */
|
|
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_THERMAL:
|
|
|
|
/* Walk the notify handler list for this object */
|
|
|
|
HandlerDesc = Object->CommonNotify.Handler;
|
|
while (HandlerDesc)
|
|
{
|
|
NextDesc = HandlerDesc->AddressSpace.Next;
|
|
AcpiUtRemoveReference (HandlerDesc);
|
|
HandlerDesc = NextDesc;
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_MUTEX:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Mutex %p, OS Mutex %p\n",
|
|
Object, Object->Mutex.OsMutex));
|
|
|
|
if (Object == AcpiGbl_GlobalLockMutex)
|
|
{
|
|
/* Global Lock has extra semaphore */
|
|
|
|
(void) AcpiOsDeleteSemaphore (AcpiGbl_GlobalLockSemaphore);
|
|
AcpiGbl_GlobalLockSemaphore = NULL;
|
|
|
|
AcpiOsDeleteMutex (Object->Mutex.OsMutex);
|
|
AcpiGbl_GlobalLockMutex = NULL;
|
|
}
|
|
else
|
|
{
|
|
AcpiExUnlinkMutex (Object);
|
|
AcpiOsDeleteMutex (Object->Mutex.OsMutex);
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_EVENT:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Event %p, OS Semaphore %p\n",
|
|
Object, Object->Event.OsSemaphore));
|
|
|
|
(void) AcpiOsDeleteSemaphore (Object->Event.OsSemaphore);
|
|
Object->Event.OsSemaphore = NULL;
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_METHOD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Method %p\n", Object));
|
|
|
|
/* Delete the method mutex if it exists */
|
|
|
|
if (Object->Method.Mutex)
|
|
{
|
|
AcpiOsDeleteMutex (Object->Method.Mutex->Mutex.OsMutex);
|
|
AcpiUtDeleteObjectDesc (Object->Method.Mutex);
|
|
Object->Method.Mutex = NULL;
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_REGION:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Region %p\n", Object));
|
|
|
|
SecondDesc = AcpiNsGetSecondaryObject (Object);
|
|
if (SecondDesc)
|
|
{
|
|
/*
|
|
* Free the RegionContext if and only if the handler is one of the
|
|
* default handlers -- and therefore, we created the context object
|
|
* locally, it was not created by an external caller.
|
|
*/
|
|
HandlerDesc = Object->Region.Handler;
|
|
if (HandlerDesc)
|
|
{
|
|
NextDesc = HandlerDesc->AddressSpace.RegionList;
|
|
LastObjPtr = &HandlerDesc->AddressSpace.RegionList;
|
|
|
|
/* Remove the region object from the handler's list */
|
|
|
|
while (NextDesc)
|
|
{
|
|
if (NextDesc == Object)
|
|
{
|
|
*LastObjPtr = NextDesc->Region.Next;
|
|
break;
|
|
}
|
|
|
|
/* Walk the linked list of handler */
|
|
|
|
LastObjPtr = &NextDesc->Region.Next;
|
|
NextDesc = NextDesc->Region.Next;
|
|
}
|
|
|
|
if (HandlerDesc->AddressSpace.HandlerFlags &
|
|
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)
|
|
{
|
|
/* Deactivate region and free region context */
|
|
|
|
if (HandlerDesc->AddressSpace.Setup)
|
|
{
|
|
(void) HandlerDesc->AddressSpace.Setup (Object,
|
|
ACPI_REGION_DEACTIVATE,
|
|
HandlerDesc->AddressSpace.Context,
|
|
&SecondDesc->Extra.RegionContext);
|
|
}
|
|
}
|
|
|
|
AcpiUtRemoveReference (HandlerDesc);
|
|
}
|
|
|
|
/* Now we can free the Extra object */
|
|
|
|
AcpiUtDeleteObjectDesc (SecondDesc);
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Buffer Field %p\n", Object));
|
|
|
|
SecondDesc = AcpiNsGetSecondaryObject (Object);
|
|
if (SecondDesc)
|
|
{
|
|
AcpiUtDeleteObjectDesc (SecondDesc);
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Bank Field %p\n", Object));
|
|
|
|
SecondDesc = AcpiNsGetSecondaryObject (Object);
|
|
if (SecondDesc)
|
|
{
|
|
AcpiUtDeleteObjectDesc (SecondDesc);
|
|
}
|
|
break;
|
|
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Free any allocated memory (pointer within the object) found above */
|
|
|
|
if (ObjPointer)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object Subptr %p\n",
|
|
ObjPointer));
|
|
ACPI_FREE (ObjPointer);
|
|
}
|
|
|
|
/* Now the object can be safely deleted */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n",
|
|
Object, AcpiUtGetObjectTypeName (Object)));
|
|
|
|
AcpiUtDeleteObjectDesc (Object);
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtDeleteInternalObjectList
|
|
*
|
|
* PARAMETERS: ObjList - Pointer to the list to be deleted
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: This function deletes an internal object list, including both
|
|
* simple objects and package objects
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiUtDeleteInternalObjectList (
|
|
ACPI_OPERAND_OBJECT **ObjList)
|
|
{
|
|
ACPI_OPERAND_OBJECT **InternalObj;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (UtDeleteInternalObjectList);
|
|
|
|
|
|
/* Walk the null-terminated internal list */
|
|
|
|
for (InternalObj = ObjList; *InternalObj; InternalObj++)
|
|
{
|
|
AcpiUtRemoveReference (*InternalObj);
|
|
}
|
|
|
|
/* Free the combined parameter pointer list and object array */
|
|
|
|
ACPI_FREE (ObjList);
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtUpdateRefCount
|
|
*
|
|
* PARAMETERS: Object - Object whose ref count is to be updated
|
|
* Action - What to do
|
|
*
|
|
* RETURN: New ref count
|
|
*
|
|
* DESCRIPTION: Modify the ref count and return it.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AcpiUtUpdateRefCount (
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
UINT32 Action)
|
|
{
|
|
UINT16 Count;
|
|
UINT16 NewCount;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (UtUpdateRefCount);
|
|
|
|
|
|
if (!Object)
|
|
{
|
|
return;
|
|
}
|
|
|
|
Count = Object->Common.ReferenceCount;
|
|
NewCount = Count;
|
|
|
|
/*
|
|
* Perform the reference count action (increment, decrement, force delete)
|
|
*/
|
|
switch (Action)
|
|
{
|
|
case REF_INCREMENT:
|
|
|
|
NewCount++;
|
|
Object->Common.ReferenceCount = NewCount;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Refs=%X, [Incremented]\n",
|
|
Object, NewCount));
|
|
break;
|
|
|
|
case REF_DECREMENT:
|
|
|
|
if (Count < 1)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Refs=%X, can't decrement! (Set to 0)\n",
|
|
Object, NewCount));
|
|
|
|
NewCount = 0;
|
|
}
|
|
else
|
|
{
|
|
NewCount--;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Refs=%X, [Decremented]\n",
|
|
Object, NewCount));
|
|
}
|
|
|
|
if (Object->Common.Type == ACPI_TYPE_METHOD)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Method Obj %p Refs=%X, [Decremented]\n", Object, NewCount));
|
|
}
|
|
|
|
Object->Common.ReferenceCount = NewCount;
|
|
if (NewCount == 0)
|
|
{
|
|
AcpiUtDeleteInternalObj (Object);
|
|
}
|
|
break;
|
|
|
|
case REF_FORCE_DELETE:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Refs=%X, Force delete! (Set to 0)\n", Object, Count));
|
|
|
|
NewCount = 0;
|
|
Object->Common.ReferenceCount = NewCount;
|
|
AcpiUtDeleteInternalObj (Object);
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_ERROR ((AE_INFO, "Unknown action (0x%X)", Action));
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Sanity check the reference count, for debug purposes only.
|
|
* (A deleted object will have a huge reference count)
|
|
*/
|
|
if (Count > ACPI_MAX_REFERENCE_COUNT)
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"Large Reference Count (0x%X) in object %p", Count, Object));
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtUpdateObjectReference
|
|
*
|
|
* PARAMETERS: Object - Increment ref count for this object
|
|
* and all sub-objects
|
|
* Action - Either REF_INCREMENT or REF_DECREMENT or
|
|
* REF_FORCE_DELETE
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Increment the object reference count
|
|
*
|
|
* Object references are incremented when:
|
|
* 1) An object is attached to a Node (namespace object)
|
|
* 2) An object is copied (all subobjects must be incremented)
|
|
*
|
|
* Object references are decremented when:
|
|
* 1) An object is detached from an Node
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtUpdateObjectReference (
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
UINT16 Action)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GENERIC_STATE *StateList = NULL;
|
|
ACPI_OPERAND_OBJECT *NextObject = NULL;
|
|
ACPI_GENERIC_STATE *State;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (UtUpdateObjectReference, Object);
|
|
|
|
|
|
while (Object)
|
|
{
|
|
/* Make sure that this isn't a namespace handle */
|
|
|
|
if (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Object %p is NS handle\n", Object));
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* All sub-objects must have their reference count incremented also.
|
|
* Different object types have different subobjects.
|
|
*/
|
|
switch (Object->Common.Type)
|
|
{
|
|
case ACPI_TYPE_DEVICE:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_POWER:
|
|
case ACPI_TYPE_THERMAL:
|
|
|
|
/* Update the notify objects for these types (if present) */
|
|
|
|
AcpiUtUpdateRefCount (Object->CommonNotify.SystemNotify, Action);
|
|
AcpiUtUpdateRefCount (Object->CommonNotify.DeviceNotify, Action);
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
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/*
|
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* We must update all the sub-objects of the package,
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* each of whom may have their own sub-objects.
|
|
*/
|
|
for (i = 0; i < Object->Package.Count; i++)
|
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{
|
|
/*
|
|
* Push each element onto the stack for later processing.
|
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* Note: There can be null elements within the package,
|
|
* these are simply ignored
|
|
*/
|
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Status = AcpiUtCreateUpdateStateAndPush (
|
|
Object->Package.Elements[i], Action, &StateList);
|
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if (ACPI_FAILURE (Status))
|
|
{
|
|
goto ErrorExit;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
NextObject = Object->BufferField.BufferObj;
|
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break;
|
|
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
|
|
|
NextObject = Object->Field.RegionObj;
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
|
|
NextObject = Object->BankField.BankObj;
|
|
Status = AcpiUtCreateUpdateStateAndPush (
|
|
Object->BankField.RegionObj, Action, &StateList);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto ErrorExit;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
|
|
|
NextObject = Object->IndexField.IndexObj;
|
|
Status = AcpiUtCreateUpdateStateAndPush (
|
|
Object->IndexField.DataObj, Action, &StateList);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto ErrorExit;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
/*
|
|
* The target of an Index (a package, string, or buffer) or a named
|
|
* reference must track changes to the ref count of the index or
|
|
* target object.
|
|
*/
|
|
if ((Object->Reference.Class == ACPI_REFCLASS_INDEX) ||
|
|
(Object->Reference.Class== ACPI_REFCLASS_NAME))
|
|
{
|
|
NextObject = Object->Reference.Object;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_REGION:
|
|
default:
|
|
break; /* No subobjects for all other types */
|
|
}
|
|
|
|
/*
|
|
* Now we can update the count in the main object. This can only
|
|
* happen after we update the sub-objects in case this causes the
|
|
* main object to be deleted.
|
|
*/
|
|
AcpiUtUpdateRefCount (Object, Action);
|
|
Object = NULL;
|
|
|
|
/* Move on to the next object to be updated */
|
|
|
|
if (NextObject)
|
|
{
|
|
Object = NextObject;
|
|
NextObject = NULL;
|
|
}
|
|
else if (StateList)
|
|
{
|
|
State = AcpiUtPopGenericState (&StateList);
|
|
Object = State->Update.Object;
|
|
AcpiUtDeleteGenericState (State);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
|
|
|
|
ErrorExit:
|
|
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Could not update object reference count"));
|
|
|
|
/* Free any stacked Update State objects */
|
|
|
|
while (StateList)
|
|
{
|
|
State = AcpiUtPopGenericState (&StateList);
|
|
AcpiUtDeleteGenericState (State);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtAddReference
|
|
*
|
|
* PARAMETERS: Object - Object whose reference count is to be
|
|
* incremented
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Add one reference to an ACPI object
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiUtAddReference (
|
|
ACPI_OPERAND_OBJECT *Object)
|
|
{
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (UtAddReference, Object);
|
|
|
|
|
|
/* Ensure that we have a valid object */
|
|
|
|
if (!AcpiUtValidInternalObject (Object))
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Current Refs=%X [To Be Incremented]\n",
|
|
Object, Object->Common.ReferenceCount));
|
|
|
|
/* Increment the reference count */
|
|
|
|
(void) AcpiUtUpdateObjectReference (Object, REF_INCREMENT);
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtRemoveReference
|
|
*
|
|
* PARAMETERS: Object - Object whose ref count will be decremented
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Decrement the reference count of an ACPI internal object
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiUtRemoveReference (
|
|
ACPI_OPERAND_OBJECT *Object)
|
|
{
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (UtRemoveReference, Object);
|
|
|
|
|
|
/*
|
|
* Allow a NULL pointer to be passed in, just ignore it. This saves
|
|
* each caller from having to check. Also, ignore NS nodes.
|
|
*
|
|
*/
|
|
if (!Object ||
|
|
(ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED))
|
|
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
/* Ensure that we have a valid object */
|
|
|
|
if (!AcpiUtValidInternalObject (Object))
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Current Refs=%X [To Be Decremented]\n",
|
|
Object, Object->Common.ReferenceCount));
|
|
|
|
/*
|
|
* Decrement the reference count, and only actually delete the object
|
|
* if the reference count becomes 0. (Must also decrement the ref count
|
|
* of all subobjects!)
|
|
*/
|
|
(void) AcpiUtUpdateObjectReference (Object, REF_DECREMENT);
|
|
return_VOID;
|
|
}
|
|
|
|
|