/****************************************************************************** * * Module Name: utids - support for device IDs - HID, UID, CID, SUB, CLS * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2022, 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. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include #include #include #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME ("utids") /******************************************************************************* * * FUNCTION: AcpiUtExecute_HID * * PARAMETERS: DeviceNode - Node for the device * ReturnId - Where the string HID is returned * * RETURN: Status * * DESCRIPTION: Executes the _HID control method that returns the hardware * ID of the device. The HID is either an 32-bit encoded EISAID * Integer or a String. A string is always returned. An EISAID * is converted to a string. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_HID ( ACPI_NAMESPACE_NODE *DeviceNode, ACPI_PNP_DEVICE_ID **ReturnId) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_PNP_DEVICE_ID *Hid; UINT32 Length; 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); } /* Get the size of the String to be returned, includes null terminator */ if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) { Length = ACPI_EISAID_STRING_SIZE; } else { Length = ObjDesc->String.Length + 1; } /* Allocate a buffer for the HID */ Hid = ACPI_ALLOCATE_ZEROED ( sizeof (ACPI_PNP_DEVICE_ID) + (ACPI_SIZE) Length); if (!Hid) { Status = AE_NO_MEMORY; goto Cleanup; } /* Area for the string starts after PNP_DEVICE_ID struct */ Hid->String = ACPI_ADD_PTR (char, Hid, sizeof (ACPI_PNP_DEVICE_ID)); /* Convert EISAID to a string or simply copy existing string */ if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) { AcpiExEisaIdToString (Hid->String, ObjDesc->Integer.Value); } else { strcpy (Hid->String, ObjDesc->String.Pointer); } Hid->Length = Length; *ReturnId = Hid; Cleanup: /* On exit, we must delete the return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtExecute_UID * * PARAMETERS: DeviceNode - Node for the device * ReturnId - Where the string UID is returned * * RETURN: Status * * DESCRIPTION: Executes the _UID control method that returns the unique * ID of the device. The UID is either a 64-bit Integer (NOT an * EISAID) or a string. Always returns a string. A 64-bit integer * is converted to a decimal string. * * NOTE: Internal function, no parameter validation * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_UID ( ACPI_NAMESPACE_NODE *DeviceNode, ACPI_PNP_DEVICE_ID **ReturnId) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_PNP_DEVICE_ID *Uid; UINT32 Length; 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); } /* Get the size of the String to be returned, includes null terminator */ if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) { Length = ACPI_MAX64_DECIMAL_DIGITS + 1; } else { Length = ObjDesc->String.Length + 1; } /* Allocate a buffer for the UID */ Uid = ACPI_ALLOCATE_ZEROED ( sizeof (ACPI_PNP_DEVICE_ID) + (ACPI_SIZE) Length); if (!Uid) { Status = AE_NO_MEMORY; goto Cleanup; } /* Area for the string starts after PNP_DEVICE_ID struct */ Uid->String = ACPI_ADD_PTR (char, Uid, sizeof (ACPI_PNP_DEVICE_ID)); /* Convert an Integer to string, or just copy an existing string */ if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) { AcpiExIntegerToString (Uid->String, ObjDesc->Integer.Value); } else { strcpy (Uid->String, ObjDesc->String.Pointer); } Uid->Length = Length; *ReturnId = Uid; Cleanup: /* On exit, we must delete the return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtExecute_CID * * PARAMETERS: DeviceNode - Node for the device * ReturnCidList - Where the CID list is returned * * RETURN: Status, list of CID strings * * DESCRIPTION: Executes the _CID control method that returns one or more * compatible hardware IDs for the device. * * NOTE: Internal function, no parameter validation * * A _CID method 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 Integer CIDs are converted to string format by this function. * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_CID ( ACPI_NAMESPACE_NODE *DeviceNode, ACPI_PNP_DEVICE_ID_LIST **ReturnCidList) { ACPI_OPERAND_OBJECT **CidObjects; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_PNP_DEVICE_ID_LIST *CidList; char *NextIdString; UINT32 StringAreaSize; UINT32 Length; UINT32 CidListSize; ACPI_STATUS Status; UINT32 Count; 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 count and size of the returned _CIDs. _CID can return either * a Package of Integers/Strings or a single Integer or String. * Note: This section also validates that all CID elements are of the * correct type (Integer or String). */ if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE) { Count = ObjDesc->Package.Count; CidObjects = ObjDesc->Package.Elements; } else /* Single Integer or String CID */ { Count = 1; CidObjects = &ObjDesc; } StringAreaSize = 0; for (i = 0; i < Count; i++) { /* String lengths include null terminator */ switch (CidObjects[i]->Common.Type) { case ACPI_TYPE_INTEGER: StringAreaSize += ACPI_EISAID_STRING_SIZE; break; case ACPI_TYPE_STRING: StringAreaSize += CidObjects[i]->String.Length + 1; break; default: Status = AE_TYPE; goto Cleanup; } } /* * Now that we know the length of the CIDs, allocate return buffer: * 1) Size of the base structure + * 2) Size of the CID PNP_DEVICE_ID array + * 3) Size of the actual CID strings */ CidListSize = sizeof (ACPI_PNP_DEVICE_ID_LIST) + (Count * sizeof (ACPI_PNP_DEVICE_ID)) + StringAreaSize; CidList = ACPI_ALLOCATE_ZEROED (CidListSize); if (!CidList) { Status = AE_NO_MEMORY; goto Cleanup; } /* Area for CID strings starts after the CID PNP_DEVICE_ID array */ NextIdString = ACPI_CAST_PTR (char, CidList->Ids) + ((ACPI_SIZE) Count * sizeof (ACPI_PNP_DEVICE_ID)); /* Copy/convert the CIDs to the return buffer */ for (i = 0; i < Count; i++) { if (CidObjects[i]->Common.Type == ACPI_TYPE_INTEGER) { /* Convert the Integer (EISAID) CID to a string */ AcpiExEisaIdToString ( NextIdString, CidObjects[i]->Integer.Value); Length = ACPI_EISAID_STRING_SIZE; } else /* ACPI_TYPE_STRING */ { /* Copy the String CID from the returned object */ strcpy (NextIdString, CidObjects[i]->String.Pointer); Length = CidObjects[i]->String.Length + 1; } CidList->Ids[i].String = NextIdString; CidList->Ids[i].Length = Length; NextIdString += Length; } /* Finish the CID list */ CidList->Count = Count; CidList->ListSize = CidListSize; *ReturnCidList = CidList; Cleanup: /* On exit, we must delete the _CID return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiUtExecute_CLS * * PARAMETERS: DeviceNode - Node for the device * ReturnId - Where the _CLS is returned * * RETURN: Status * * DESCRIPTION: Executes the _CLS control method that returns PCI-defined * class code of the device. The _CLS value is always a package * containing PCI class information as a list of integers. * The returned string has format "BBSSPP", where: * BB = Base-class code * SS = Sub-class code * PP = Programming Interface code * ******************************************************************************/ ACPI_STATUS AcpiUtExecute_CLS ( ACPI_NAMESPACE_NODE *DeviceNode, ACPI_PNP_DEVICE_ID **ReturnId) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT **ClsObjects; UINT32 Count; ACPI_PNP_DEVICE_ID *Cls; UINT32 Length; ACPI_STATUS Status; UINT8 ClassCode[3] = {0, 0, 0}; ACPI_FUNCTION_TRACE (UtExecute_CLS); Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__CLS, ACPI_BTYPE_PACKAGE, &ObjDesc); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Get the size of the String to be returned, includes null terminator */ Length = ACPI_PCICLS_STRING_SIZE; ClsObjects = ObjDesc->Package.Elements; Count = ObjDesc->Package.Count; if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE) { if (Count > 0 && ClsObjects[0]->Common.Type == ACPI_TYPE_INTEGER) { ClassCode[0] = (UINT8) ClsObjects[0]->Integer.Value; } if (Count > 1 && ClsObjects[1]->Common.Type == ACPI_TYPE_INTEGER) { ClassCode[1] = (UINT8) ClsObjects[1]->Integer.Value; } if (Count > 2 && ClsObjects[2]->Common.Type == ACPI_TYPE_INTEGER) { ClassCode[2] = (UINT8) ClsObjects[2]->Integer.Value; } } /* Allocate a buffer for the CLS */ Cls = ACPI_ALLOCATE_ZEROED ( sizeof (ACPI_PNP_DEVICE_ID) + (ACPI_SIZE) Length); if (!Cls) { Status = AE_NO_MEMORY; goto Cleanup; } /* Area for the string starts after PNP_DEVICE_ID struct */ Cls->String = ACPI_ADD_PTR (char, Cls, sizeof (ACPI_PNP_DEVICE_ID)); /* Simply copy existing string */ AcpiExPciClsToString (Cls->String, ClassCode); Cls->Length = Length; *ReturnId = Cls; Cleanup: /* On exit, we must delete the return object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); }