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minix3/drivers/power/acpi/namespace/nsrepair2.c

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/******************************************************************************
*
* Module Name: nsrepair2 - Repair for objects returned by specific
* predefined methods
*
*****************************************************************************/
/******************************************************************************
*
* 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 __NSREPAIR2_C__
#include "acpi.h"
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME ("nsrepair2")
/*
* Information structure and handler for ACPI predefined names that can
* be repaired on a per-name basis.
*/
typedef
ACPI_STATUS (*ACPI_REPAIR_FUNCTION) (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr);
typedef struct acpi_repair_info
{
char Name[ACPI_NAME_SIZE];
ACPI_REPAIR_FUNCTION RepairFunction;
} ACPI_REPAIR_INFO;
/* Local prototypes */
static const ACPI_REPAIR_INFO *
AcpiNsMatchRepairableName (
ACPI_NAMESPACE_NODE *Node);
static ACPI_STATUS
AcpiNsRepair_ALR (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr);
static ACPI_STATUS
AcpiNsRepair_FDE (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr);
static ACPI_STATUS
AcpiNsRepair_PSS (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr);
static ACPI_STATUS
AcpiNsRepair_TSS (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr);
static ACPI_STATUS
AcpiNsCheckSortedList (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT *ReturnObject,
UINT32 ExpectedCount,
UINT32 SortIndex,
UINT8 SortDirection,
char *SortKeyName);
static void
AcpiNsSortList (
ACPI_OPERAND_OBJECT **Elements,
UINT32 Count,
UINT32 Index,
UINT8 SortDirection);
/* Values for SortDirection above */
#define ACPI_SORT_ASCENDING 0
#define ACPI_SORT_DESCENDING 1
/*
* This table contains the names of the predefined methods for which we can
* perform more complex repairs.
*
* As necessary:
*
* _ALR: Sort the list ascending by AmbientIlluminance
* _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs
* _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs
* _PSS: Sort the list descending by Power
* _TSS: Sort the list descending by Power
*
* Names that must be packages, but cannot be sorted:
*
* _BCL: Values are tied to the Package index where they appear, and cannot
* be moved or sorted. These index values are used for _BQC and _BCM.
* However, we can fix the case where a buffer is returned, by converting
* it to a Package of integers.
*/
static const ACPI_REPAIR_INFO AcpiNsRepairableNames[] =
{
{"_ALR", AcpiNsRepair_ALR},
{"_FDE", AcpiNsRepair_FDE},
{"_GTM", AcpiNsRepair_FDE}, /* _GTM has same repair as _FDE */
{"_PSS", AcpiNsRepair_PSS},
{"_TSS", AcpiNsRepair_TSS},
{{0,0,0,0}, NULL} /* Table terminator */
};
#define ACPI_FDE_FIELD_COUNT 5
#define ACPI_FDE_BYTE_BUFFER_SIZE 5
#define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (UINT32))
/******************************************************************************
*
* FUNCTION: AcpiNsComplexRepairs
*
* PARAMETERS: Data - Pointer to validation data structure
* Node - Namespace node for the method/object
* ValidateStatus - Original status of earlier validation
* ReturnObjectPtr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if repair was successful. If name is not
* matched, ValidateStatus is returned.
*
* DESCRIPTION: Attempt to repair/convert a return object of a type that was
* not expected.
*
*****************************************************************************/
ACPI_STATUS
AcpiNsComplexRepairs (
ACPI_PREDEFINED_DATA *Data,
ACPI_NAMESPACE_NODE *Node,
ACPI_STATUS ValidateStatus,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
const ACPI_REPAIR_INFO *Predefined;
ACPI_STATUS Status;
/* Check if this name is in the list of repairable names */
Predefined = AcpiNsMatchRepairableName (Node);
if (!Predefined)
{
return (ValidateStatus);
}
Status = Predefined->RepairFunction (Data, ReturnObjectPtr);
return (Status);
}
/******************************************************************************
*
* FUNCTION: AcpiNsMatchRepairableName
*
* PARAMETERS: Node - Namespace node for the method/object
*
* RETURN: Pointer to entry in repair table. NULL indicates not found.
*
* DESCRIPTION: Check an object name against the repairable object list.
*
*****************************************************************************/
static const ACPI_REPAIR_INFO *
AcpiNsMatchRepairableName (
ACPI_NAMESPACE_NODE *Node)
{
const ACPI_REPAIR_INFO *ThisName;
/* Search info table for a repairable predefined method/object name */
ThisName = AcpiNsRepairableNames;
while (ThisName->RepairFunction)
{
if (ACPI_COMPARE_NAME (Node->Name.Ascii, ThisName->Name))
{
return (ThisName);
}
ThisName++;
}
return (NULL); /* Not found */
}
/******************************************************************************
*
* FUNCTION: AcpiNsRepair_ALR
*
* PARAMETERS: Data - Pointer to validation data structure
* ReturnObjectPtr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list
* ascending by the ambient illuminance values.
*
*****************************************************************************/
static ACPI_STATUS
AcpiNsRepair_ALR (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
ACPI_STATUS Status;
Status = AcpiNsCheckSortedList (Data, ReturnObject, 2, 1,
ACPI_SORT_ASCENDING, "AmbientIlluminance");
return (Status);
}
/******************************************************************************
*
* FUNCTION: AcpiNsRepair_FDE
*
* PARAMETERS: Data - Pointer to validation data structure
* ReturnObjectPtr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return
* value is a Buffer of 5 DWORDs. This function repairs a common
* problem where the return value is a Buffer of BYTEs, not
* DWORDs.
*
*****************************************************************************/
static ACPI_STATUS
AcpiNsRepair_FDE (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
ACPI_OPERAND_OBJECT *BufferObject;
UINT8 *ByteBuffer;
UINT32 *DwordBuffer;
UINT32 i;
ACPI_FUNCTION_NAME (NsRepair_FDE);
switch (ReturnObject->Common.Type)
{
case ACPI_TYPE_BUFFER:
/* This is the expected type. Length should be (at least) 5 DWORDs */
if (ReturnObject->Buffer.Length >= ACPI_FDE_DWORD_BUFFER_SIZE)
{
return (AE_OK);
}
/* We can only repair if we have exactly 5 BYTEs */
if (ReturnObject->Buffer.Length != ACPI_FDE_BYTE_BUFFER_SIZE)
{
ACPI_WARN_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags,
"Incorrect return buffer length %u, expected %u",
ReturnObject->Buffer.Length, ACPI_FDE_DWORD_BUFFER_SIZE));
return (AE_AML_OPERAND_TYPE);
}
/* Create the new (larger) buffer object */
BufferObject = AcpiUtCreateBufferObject (ACPI_FDE_DWORD_BUFFER_SIZE);
if (!BufferObject)
{
return (AE_NO_MEMORY);
}
/* Expand each byte to a DWORD */
ByteBuffer = ReturnObject->Buffer.Pointer;
DwordBuffer = ACPI_CAST_PTR (UINT32, BufferObject->Buffer.Pointer);
for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++)
{
*DwordBuffer = (UINT32) *ByteBuffer;
DwordBuffer++;
ByteBuffer++;
}
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s Expanded Byte Buffer to expected DWord Buffer\n",
Data->Pathname));
break;
default:
return (AE_AML_OPERAND_TYPE);
}
/* Delete the original return object, return the new buffer object */
AcpiUtRemoveReference (ReturnObject);
*ReturnObjectPtr = BufferObject;
Data->Flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiNsRepair_TSS
*
* PARAMETERS: Data - Pointer to validation data structure
* ReturnObjectPtr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
* descending by the power dissipation values.
*
*****************************************************************************/
static ACPI_STATUS
AcpiNsRepair_TSS (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
ACPI_STATUS Status;
Status = AcpiNsCheckSortedList (Data, ReturnObject, 5, 1,
ACPI_SORT_DESCENDING, "PowerDissipation");
return (Status);
}
/******************************************************************************
*
* FUNCTION: AcpiNsRepair_PSS
*
* PARAMETERS: Data - Pointer to validation data structure
* ReturnObjectPtr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list
* by the CPU frequencies. Check that the power dissipation values
* are all proportional to CPU frequency (i.e., sorting by
* frequency should be the same as sorting by power.)
*
*****************************************************************************/
static ACPI_STATUS
AcpiNsRepair_PSS (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT **ReturnObjectPtr)
{
ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
ACPI_OPERAND_OBJECT **OuterElements;
UINT32 OuterElementCount;
ACPI_OPERAND_OBJECT **Elements;
ACPI_OPERAND_OBJECT *ObjDesc;
UINT32 PreviousValue;
ACPI_STATUS Status;
UINT32 i;
/*
* Entries (sub-packages) in the _PSS Package must be sorted by power
* dissipation, in descending order. If it appears that the list is
* incorrectly sorted, sort it. We sort by CpuFrequency, since this
* should be proportional to the power.
*/
Status =AcpiNsCheckSortedList (Data, ReturnObject, 6, 0,
ACPI_SORT_DESCENDING, "CpuFrequency");
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* We now know the list is correctly sorted by CPU frequency. Check if
* the power dissipation values are proportional.
*/
PreviousValue = ACPI_UINT32_MAX;
OuterElements = ReturnObject->Package.Elements;
OuterElementCount = ReturnObject->Package.Count;
for (i = 0; i < OuterElementCount; i++)
{
Elements = (*OuterElements)->Package.Elements;
ObjDesc = Elements[1]; /* Index1 = PowerDissipation */
if ((UINT32) ObjDesc->Integer.Value > PreviousValue)
{
ACPI_WARN_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags,
"SubPackage[%u,%u] - suspicious power dissipation values",
i-1, i));
}
PreviousValue = (UINT32) ObjDesc->Integer.Value;
OuterElements++;
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiNsCheckSortedList
*
* PARAMETERS: Data - Pointer to validation data structure
* ReturnObject - Pointer to the top-level returned object
* ExpectedCount - Minimum length of each sub-package
* SortIndex - Sub-package entry to sort on
* SortDirection - Ascending or descending
* SortKeyName - Name of the SortIndex field
*
* RETURN: Status. AE_OK if the list is valid and is sorted correctly or
* has been repaired by sorting the list.
*
* DESCRIPTION: Check if the package list is valid and sorted correctly by the
* SortIndex. If not, then sort the list.
*
*****************************************************************************/
static ACPI_STATUS
AcpiNsCheckSortedList (
ACPI_PREDEFINED_DATA *Data,
ACPI_OPERAND_OBJECT *ReturnObject,
UINT32 ExpectedCount,
UINT32 SortIndex,
UINT8 SortDirection,
char *SortKeyName)
{
UINT32 OuterElementCount;
ACPI_OPERAND_OBJECT **OuterElements;
ACPI_OPERAND_OBJECT **Elements;
ACPI_OPERAND_OBJECT *ObjDesc;
UINT32 i;
UINT32 PreviousValue;
ACPI_FUNCTION_NAME (NsCheckSortedList);
/* The top-level object must be a package */
if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE)
{
return (AE_AML_OPERAND_TYPE);
}
/*
* NOTE: assumes list of sub-packages contains no NULL elements.
* Any NULL elements should have been removed by earlier call
* to AcpiNsRemoveNullElements.
*/
OuterElements = ReturnObject->Package.Elements;
OuterElementCount = ReturnObject->Package.Count;
if (!OuterElementCount)
{
return (AE_AML_PACKAGE_LIMIT);
}
PreviousValue = 0;
if (SortDirection == ACPI_SORT_DESCENDING)
{
PreviousValue = ACPI_UINT32_MAX;
}
/* Examine each subpackage */
for (i = 0; i < OuterElementCount; i++)
{
/* Each element of the top-level package must also be a package */
if ((*OuterElements)->Common.Type != ACPI_TYPE_PACKAGE)
{
return (AE_AML_OPERAND_TYPE);
}
/* Each sub-package must have the minimum length */
if ((*OuterElements)->Package.Count < ExpectedCount)
{
return (AE_AML_PACKAGE_LIMIT);
}
Elements = (*OuterElements)->Package.Elements;
ObjDesc = Elements[SortIndex];
if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
{
return (AE_AML_OPERAND_TYPE);
}
/*
* The list must be sorted in the specified order. If we detect a
* discrepancy, sort the entire list.
*/
if (((SortDirection == ACPI_SORT_ASCENDING) &&
(ObjDesc->Integer.Value < PreviousValue)) ||
((SortDirection == ACPI_SORT_DESCENDING) &&
(ObjDesc->Integer.Value > PreviousValue)))
{
AcpiNsSortList (ReturnObject->Package.Elements,
OuterElementCount, SortIndex, SortDirection);
Data->Flags |= ACPI_OBJECT_REPAIRED;
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
"%s: Repaired unsorted list - now sorted by %s\n",
Data->Pathname, SortKeyName));
return (AE_OK);
}
PreviousValue = (UINT32) ObjDesc->Integer.Value;
OuterElements++;
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiNsSortList
*
* PARAMETERS: Elements - Package object element list
* Count - Element count for above
* Index - Sort by which package element
* SortDirection - Ascending or Descending sort
*
* RETURN: None
*
* DESCRIPTION: Sort the objects that are in a package element list.
*
* NOTE: Assumes that all NULL elements have been removed from the package,
* and that all elements have been verified to be of type Integer.
*
*****************************************************************************/
static void
AcpiNsSortList (
ACPI_OPERAND_OBJECT **Elements,
UINT32 Count,
UINT32 Index,
UINT8 SortDirection)
{
ACPI_OPERAND_OBJECT *ObjDesc1;
ACPI_OPERAND_OBJECT *ObjDesc2;
ACPI_OPERAND_OBJECT *TempObj;
UINT32 i;
UINT32 j;
/* Simple bubble sort */
for (i = 1; i < Count; i++)
{
for (j = (Count - 1); j >= i; j--)
{
ObjDesc1 = Elements[j-1]->Package.Elements[Index];
ObjDesc2 = Elements[j]->Package.Elements[Index];
if (((SortDirection == ACPI_SORT_ASCENDING) &&
(ObjDesc1->Integer.Value > ObjDesc2->Integer.Value)) ||
((SortDirection == ACPI_SORT_DESCENDING) &&
(ObjDesc1->Integer.Value < ObjDesc2->Integer.Value)))
{
TempObj = Elements[j-1];
Elements[j-1] = Elements[j];
Elements[j] = TempObj;
}
}
}
}
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