/****************************************************************************** * * Module Name: uteval - Object evaluation * $Revision: 1.73 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2008, 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 __UTEVAL_C__ #include "acpi.h" #include "acnamesp.h" #include "acinterp.h" #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME ("uteval") /* Local prototypes */ static void AcpiUtCopyIdString ( char *Destination, char *Source, ACPI_SIZE MaxLength); static ACPI_STATUS AcpiUtTranslateOneCid ( ACPI_OPERAND_OBJECT *ObjDesc, ACPI_COMPATIBLE_ID *OneCid); /* * Strings supported by the _OSI predefined (internal) method. */ static const char *AcpiInterfacesSupported[] = { /* Operating System Vendor Strings */ "Linux", "Windows 2000", /* Windows 2000 */ "Windows 2001", /* Windows XP */ "Windows 2001 SP1", /* Windows XP SP1 */ "Windows 2001 SP2", /* Windows XP SP2 */ "Windows 2001.1", /* Windows Server 2003 */ "Windows 2001.1 SP1", /* Windows Server 2003 SP1 - Added 03/2006 */ "Windows 2006", /* Windows Vista - Added 03/2006 */ /* Feature Group Strings */ "Extended Address Space Descriptor" /* * All "optional" feature group strings (features that are implemented * by the host) should be implemented in the host version of * AcpiOsValidateInterface and should not be added here. */ }; /******************************************************************************* * * FUNCTION: AcpiUtOsiImplementation * * PARAMETERS: WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Implementation of the _OSI predefined control method * ******************************************************************************/ ACPI_STATUS AcpiUtOsiImplementation ( ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *StringDesc; ACPI_OPERAND_OBJECT *ReturnDesc; UINT32 i; ACPI_FUNCTION_TRACE (UtOsiImplementation); /* Validate the string input argument */ StringDesc = WalkState->Arguments[0].Object; if (!StringDesc || (StringDesc->Common.Type != ACPI_TYPE_STRING)) { return_ACPI_STATUS (AE_TYPE); } /* Create a return object */ ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); if (!ReturnDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Default return value is SUPPORTED */ ReturnDesc->Integer.Value = ACPI_UINT32_MAX; WalkState->ReturnDesc = ReturnDesc; /* Compare input string to static table of supported interfaces */ for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiInterfacesSupported); i++) { if (!ACPI_STRCMP (StringDesc->String.Pointer, AcpiInterfacesSupported[i])) { /* The interface is supported */ return_ACPI_STATUS (AE_CTRL_TERMINATE); } } /* * Did not match the string in the static table, call the host OSL to * check for a match with one of the optional strings (such as * "Module Device", "3.0 Thermal Model", etc.) */ Status = AcpiOsValidateInterface (StringDesc->String.Pointer); if (ACPI_SUCCESS (Status)) { /* The interface is supported */ return_ACPI_STATUS (AE_CTRL_TERMINATE); } /* The interface is not supported */ ReturnDesc->Integer.Value = 0; return_ACPI_STATUS (AE_CTRL_TERMINATE); } /******************************************************************************* * * FUNCTION: AcpiUtEvaluateObject * * PARAMETERS: PrefixNode - Starting node * Path - Path to object from starting node * ExpectedReturnTypes - Bitmap of allowed return types * ReturnDesc - Where a return value is stored * * RETURN: Status * * DESCRIPTION: Evaluates a namespace object and verifies the type of the * return object. Common code that simplifies accessing objects * that have required return objects of fixed types. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtEvaluateObject ( ACPI_NAMESPACE_NODE *PrefixNode, char *Path, UINT32 ExpectedReturnBtypes, ACPI_OPERAND_OBJECT **ReturnDesc) { ACPI_EVALUATE_INFO *Info; ACPI_STATUS Status; UINT32 ReturnBtype; ACPI_FUNCTION_TRACE (UtEvaluateObject); /* Allocate the evaluation information block */ Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); if (!Info) { return_ACPI_STATUS (AE_NO_MEMORY); } Info->PrefixNode = PrefixNode; Info->Pathname = Path; /* Evaluate the object/method */ Status = AcpiNsEvaluate (Info); if (ACPI_FAILURE (Status)) { if (Status == AE_NOT_FOUND) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s.%s] was not found\n", AcpiUtGetNodeName (PrefixNode), Path)); } else { ACPI_ERROR_METHOD ("Method execution failed", PrefixNode, Path, Status); } goto Cleanup; } /* Did we get a return object? */ if (!Info->ReturnObject) { if (ExpectedReturnBtypes) { ACPI_ERROR_METHOD ("No object was returned from", PrefixNode, Path, AE_NOT_EXIST); Status = AE_NOT_EXIST; } goto Cleanup; } /* Map the return object type to the bitmapped type */ switch (ACPI_GET_OBJECT_TYPE (Info->ReturnObject)) { case ACPI_TYPE_INTEGER: ReturnBtype = ACPI_BTYPE_INTEGER; break; case ACPI_TYPE_BUFFER: ReturnBtype = ACPI_BTYPE_BUFFER; break; case ACPI_TYPE_STRING: ReturnBtype = ACPI_BTYPE_STRING; break; case ACPI_TYPE_PACKAGE: ReturnBtype = ACPI_BTYPE_PACKAGE; break; default: ReturnBtype = 0; break; } if ((AcpiGbl_EnableInterpreterSlack) && (!ExpectedReturnBtypes)) { /* * We received a return object, but one was not expected. This can * happen frequently if the "implicit return" feature is enabled. * Just delete the return object and return AE_OK. */ AcpiUtRemoveReference (Info->ReturnObject); goto Cleanup; } /* Is the return object one of the expected types? */ if (!(ExpectedReturnBtypes & ReturnBtype)) { ACPI_ERROR_METHOD ("Return object type is incorrect", PrefixNode, Path, AE_TYPE); ACPI_ERROR ((AE_INFO, "Type returned from %s was incorrect: %s, expected Btypes: %X", Path, AcpiUtGetObjectTypeName (Info->ReturnObject), ExpectedReturnBtypes)); /* On error exit, we must delete the return object */ AcpiUtRemoveReference (Info->ReturnObject); Status = AE_TYPE; goto Cleanup; } /* Object type is OK, return it */ *ReturnDesc = Info->ReturnObject; Cleanup: ACPI_FREE (Info); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtEvaluateNumericObject * * PARAMETERS: ObjectName - Object name to be evaluated * DeviceNode - Node for the device * Address - Where the value is returned * * RETURN: Status * * DESCRIPTION: Evaluates a numeric namespace object for a selected device * and stores result in *Address. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtEvaluateNumericObject ( char *ObjectName, ACPI_NAMESPACE_NODE *DeviceNode, ACPI_INTEGER *Address) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (UtEvaluateNumericObject); Status = AcpiUtEvaluateObject (DeviceNode, ObjectName, ACPI_BTYPE_INTEGER, &ObjDesc); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Get the returned Integer */ *Address = ObjDesc->Integer.Value; /* On exit, we must delete the return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtCopyIdString * * PARAMETERS: Destination - Where to copy the string * Source - Source string * MaxLength - Length of the destination buffer * * RETURN: None * * DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods. * Performs removal of a leading asterisk if present -- workaround * for a known issue on a bunch of machines. * ******************************************************************************/ static void AcpiUtCopyIdString ( char *Destination, char *Source, ACPI_SIZE MaxLength) { /* * Workaround for ID strings that have a leading asterisk. This construct * is not allowed by the ACPI specification (ID strings must be * alphanumeric), but enough existing machines have this embedded in their * ID strings that the following code is useful. */ if (*Source == '*') { Source++; } /* Do the actual copy */ ACPI_STRNCPY (Destination, Source, MaxLength); } /******************************************************************************* * * FUNCTION: AcpiUtExecute_HID * * PARAMETERS: DeviceNode - Node for the device * Hid - Where the HID is returned * * RETURN: Status * * DESCRIPTION: Executes the _HID control method that returns the hardware * ID of the device. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_HID ( ACPI_NAMESPACE_NODE *DeviceNode, ACPI_DEVICE_ID *Hid) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (UtExecute_HID); Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__HID, ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_INTEGER) { /* Convert the Numeric HID to string */ AcpiExEisaIdToString ((UINT32) ObjDesc->Integer.Value, Hid->Value); } else { /* Copy the String HID from the returned object */ AcpiUtCopyIdString (Hid->Value, ObjDesc->String.Pointer, sizeof (Hid->Value)); } /* On exit, we must delete the return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtTranslateOneCid * * PARAMETERS: ObjDesc - _CID object, must be integer or string * OneCid - Where the CID string is returned * * RETURN: Status * * DESCRIPTION: Return a numeric or string _CID value as a string. * (Compatible ID) * * NOTE: Assumes a maximum _CID string length of * ACPI_MAX_CID_LENGTH. * ******************************************************************************/ static ACPI_STATUS AcpiUtTranslateOneCid ( ACPI_OPERAND_OBJECT *ObjDesc, ACPI_COMPATIBLE_ID *OneCid) { switch (ACPI_GET_OBJECT_TYPE (ObjDesc)) { case ACPI_TYPE_INTEGER: /* Convert the Numeric CID to string */ AcpiExEisaIdToString ((UINT32) ObjDesc->Integer.Value, OneCid->Value); return (AE_OK); case ACPI_TYPE_STRING: if (ObjDesc->String.Length > ACPI_MAX_CID_LENGTH) { return (AE_AML_STRING_LIMIT); } /* Copy the String CID from the returned object */ AcpiUtCopyIdString (OneCid->Value, ObjDesc->String.Pointer, ACPI_MAX_CID_LENGTH); return (AE_OK); default: return (AE_TYPE); } } /******************************************************************************* * * FUNCTION: AcpiUtExecute_CID * * PARAMETERS: DeviceNode - Node for the device * ReturnCidList - Where the CID list is returned * * RETURN: Status * * DESCRIPTION: Executes the _CID control method that returns one or more * compatible hardware IDs for the device. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_CID ( ACPI_NAMESPACE_NODE *DeviceNode, ACPI_COMPATIBLE_ID_LIST **ReturnCidList) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; UINT32 Count; UINT32 Size; ACPI_COMPATIBLE_ID_LIST *CidList; UINT32 i; ACPI_FUNCTION_TRACE (UtExecute_CID); /* Evaluate the _CID method for this device */ Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__CID, ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_PACKAGE, &ObjDesc); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Get the number of _CIDs returned */ Count = 1; if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_PACKAGE) { Count = ObjDesc->Package.Count; } /* Allocate a worst-case buffer for the _CIDs */ Size = (((Count - 1) * sizeof (ACPI_COMPATIBLE_ID)) + sizeof (ACPI_COMPATIBLE_ID_LIST)); CidList = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) Size); if (!CidList) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Init CID list */ CidList->Count = Count; CidList->Size = Size; /* * A _CID can return either a single compatible ID or a package of * compatible IDs. Each compatible ID can be one of the following: * 1) Integer (32 bit compressed EISA ID) or * 2) String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss") */ /* The _CID object can be either a single CID or a package (list) of CIDs */ if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_PACKAGE) { /* Translate each package element */ for (i = 0; i < Count; i++) { Status = AcpiUtTranslateOneCid (ObjDesc->Package.Elements[i], &CidList->Id[i]); if (ACPI_FAILURE (Status)) { break; } } } else { /* Only one CID, translate to a string */ Status = AcpiUtTranslateOneCid (ObjDesc, CidList->Id); } /* Cleanup on error */ if (ACPI_FAILURE (Status)) { ACPI_FREE (CidList); } else { *ReturnCidList = CidList; } /* On exit, we must delete the _CID return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtExecute_UID * * PARAMETERS: DeviceNode - Node for the device * Uid - Where the UID is returned * * RETURN: Status * * DESCRIPTION: Executes the _UID control method that returns the hardware * ID of the device. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_UID ( ACPI_NAMESPACE_NODE *DeviceNode, ACPI_DEVICE_ID *Uid) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (UtExecute_UID); Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__UID, ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_INTEGER) { /* Convert the Numeric UID to string */ AcpiExUnsignedIntegerToString (ObjDesc->Integer.Value, Uid->Value); } else { /* Copy the String UID from the returned object */ AcpiUtCopyIdString (Uid->Value, ObjDesc->String.Pointer, sizeof (Uid->Value)); } /* On exit, we must delete the return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtExecute_STA * * PARAMETERS: DeviceNode - Node for the device * Flags - Where the status flags are returned * * RETURN: Status * * DESCRIPTION: Executes _STA for selected device and stores results in * *Flags. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_STA ( ACPI_NAMESPACE_NODE *DeviceNode, UINT32 *Flags) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (UtExecute_STA); Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__STA, ACPI_BTYPE_INTEGER, &ObjDesc); if (ACPI_FAILURE (Status)) { if (AE_NOT_FOUND == Status) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "_STA on %4.4s was not found, assuming device is present\n", AcpiUtGetNodeName (DeviceNode))); *Flags = ACPI_UINT32_MAX; Status = AE_OK; } return_ACPI_STATUS (Status); } /* Extract the status flags */ *Flags = (UINT32) ObjDesc->Integer.Value; /* On exit, we must delete the return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtExecute_Sxds * * PARAMETERS: DeviceNode - Node for the device * Flags - Where the status flags are returned * * RETURN: Status * * DESCRIPTION: Executes _STA for selected device and stores results in * *Flags. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_Sxds ( ACPI_NAMESPACE_NODE *DeviceNode, UINT8 *Highest) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; UINT32 i; ACPI_FUNCTION_TRACE (UtExecute_Sxds); for (i = 0; i < 4; i++) { Highest[i] = 0xFF; Status = AcpiUtEvaluateObject (DeviceNode, ACPI_CAST_PTR (char, AcpiGbl_HighestDstateNames[i]), ACPI_BTYPE_INTEGER, &ObjDesc); if (ACPI_FAILURE (Status)) { if (Status != AE_NOT_FOUND) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s on Device %4.4s, %s\n", ACPI_CAST_PTR (char, AcpiGbl_HighestDstateNames[i]), AcpiUtGetNodeName (DeviceNode), AcpiFormatException (Status))); return_ACPI_STATUS (Status); } } else { /* Extract the Dstate value */ Highest[i] = (UINT8) ObjDesc->Integer.Value; /* Delete the return object */ AcpiUtRemoveReference (ObjDesc); } } return_ACPI_STATUS (AE_OK); }