diff options
Diffstat (limited to 'namespace/nsrepair2.c')
| -rw-r--r-- | namespace/nsrepair2.c | 669 |
1 files changed, 669 insertions, 0 deletions
diff --git a/namespace/nsrepair2.c b/namespace/nsrepair2.c new file mode 100644 index 000000000000..d248906182b8 --- /dev/null +++ b/namespace/nsrepair2.c @@ -0,0 +1,669 @@ +/****************************************************************************** + * + * Module Name: nsrepair2 - Repair for objects returned by specific + * predefined methods + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2009, 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_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 ACPI_STATUS +AcpiNsRemoveNullElements ( + ACPI_OPERAND_OBJECT *Package); + +static ACPI_STATUS +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. + * + * _ALR: Sort the list ascending by AmbientIlluminance if necessary + * _PSS: Sort the list descending by Power if necessary + * _TSS: Sort the list descending by Power if necessary + */ +static const ACPI_REPAIR_INFO AcpiNsRepairableNames[] = +{ + {"_ALR", AcpiNsRepair_ALR}, + {"_PSS", AcpiNsRepair_PSS}, + {"_TSS", AcpiNsRepair_TSS}, + {{0,0,0,0}, NULL} /* Table terminator */ +}; + + +/****************************************************************************** + * + * 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_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_STATUS Status; + + + /* The top-level object must be a package */ + + if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) + { + return (AE_AML_OPERAND_TYPE); + } + + /* + * Detect any NULL package elements and remove them from the + * package. + * + * TBD: We may want to do this for all predefined names that + * return a variable-length package of packages. + */ + Status = AcpiNsRemoveNullElements (ReturnObject); + if (Status == AE_NULL_ENTRY) + { + ACPI_INFO_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags, + "NULL elements removed from package")); + + /* Exit if package is now zero length */ + + if (!ReturnObject->Package.Count) + { + return (AE_NULL_ENTRY); + } + } + + 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, issue a warning and sort the entire list + */ + if (((SortDirection == ACPI_SORT_ASCENDING) && + (ObjDesc->Integer.Value < PreviousValue)) || + ((SortDirection == ACPI_SORT_DESCENDING) && + (ObjDesc->Integer.Value > PreviousValue))) + { + Status = AcpiNsSortList (ReturnObject->Package.Elements, + OuterElementCount, SortIndex, SortDirection); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + + Data->Flags |= ACPI_OBJECT_REPAIRED; + + ACPI_INFO_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags, + "Repaired unsorted list - now sorted by %s", SortKeyName)); + return (AE_OK); + } + + PreviousValue = (UINT32) ObjDesc->Integer.Value; + OuterElements++; + } + + return (AE_OK); +} + + +/****************************************************************************** + * + * FUNCTION: AcpiNsRemoveNullElements + * + * PARAMETERS: ObjDesc - A Package object + * + * RETURN: Status. AE_NULL_ENTRY means that one or more elements were + * removed. + * + * DESCRIPTION: Remove all NULL package elements and update the package count. + * + *****************************************************************************/ + +static ACPI_STATUS +AcpiNsRemoveNullElements ( + ACPI_OPERAND_OBJECT *ObjDesc) +{ + ACPI_OPERAND_OBJECT **Source; + ACPI_OPERAND_OBJECT **Dest; + ACPI_STATUS Status = AE_OK; + UINT32 Count; + UINT32 NewCount; + UINT32 i; + + + Count = ObjDesc->Package.Count; + NewCount = Count; + + Source = ObjDesc->Package.Elements; + Dest = Source; + + /* Examine all elements of the package object */ + + for (i = 0; i < Count; i++) + { + if (!*Source) + { + Status = AE_NULL_ENTRY; + NewCount--; + } + else + { + *Dest = *Source; + Dest++; + } + Source++; + } + + if (Status == AE_NULL_ENTRY) + { + /* NULL terminate list and update the package count */ + + *Dest = NULL; + ObjDesc->Package.Count = NewCount; + } + + return (Status); +} + + +/****************************************************************************** + * + * 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: Status + * + * DESCRIPTION: Sort the objects that are in a package element list. + * + * NOTE: Assumes that all NULL elements have been removed from the package. + * + *****************************************************************************/ + +static ACPI_STATUS +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; + } + } + } + + return (AE_OK); +} |