/******************************************************************************* * * Module Name: rslist - Linked list utilities * ******************************************************************************/ /****************************************************************************** * * 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_RESOURCES ACPI_MODULE_NAME ("rslist") /******************************************************************************* * * FUNCTION: AcpiRsConvertAmlToResources * * PARAMETERS: ACPI_WALK_AML_CALLBACK * ResourcePtr - Pointer to the buffer that will * contain the output structures * * RETURN: Status * * DESCRIPTION: Convert an AML resource to an internal representation of the * resource that is aligned and easier to access. * ******************************************************************************/ ACPI_STATUS AcpiRsConvertAmlToResources ( UINT8 *Aml, UINT32 Length, UINT32 Offset, UINT8 ResourceIndex, void **Context) { ACPI_RESOURCE **ResourcePtr = ACPI_CAST_INDIRECT_PTR ( ACPI_RESOURCE, Context); ACPI_RESOURCE *Resource; AML_RESOURCE *AmlResource; ACPI_RSCONVERT_INFO *ConversionTable; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (RsConvertAmlToResources); /* * Check that the input buffer and all subsequent pointers into it * are aligned on a native word boundary. Most important on IA64 */ Resource = *ResourcePtr; if (ACPI_IS_MISALIGNED (Resource)) { ACPI_WARNING ((AE_INFO, "Misaligned resource pointer %p", Resource)); } /* Get the appropriate conversion info table */ AmlResource = ACPI_CAST_PTR (AML_RESOURCE, Aml); if (AcpiUtGetResourceType (Aml) == ACPI_RESOURCE_NAME_SERIAL_BUS) { if (AmlResource->CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE) { ConversionTable = NULL; } else { /* This is an I2C, SPI, UART, or CSI2 SerialBus descriptor */ ConversionTable = AcpiGbl_ConvertResourceSerialBusDispatch [ AmlResource->CommonSerialBus.Type]; } } else { ConversionTable = AcpiGbl_GetResourceDispatch[ResourceIndex]; } if (!ConversionTable) { ACPI_ERROR ((AE_INFO, "Invalid/unsupported resource descriptor: Type 0x%2.2X", ResourceIndex)); return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE); } /* Convert the AML byte stream resource to a local resource struct */ Status = AcpiRsConvertAmlToResource ( Resource, AmlResource, ConversionTable); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "Could not convert AML resource (Type 0x%X)", *Aml)); return_ACPI_STATUS (Status); } if (!Resource->Length) { ACPI_EXCEPTION ((AE_INFO, Status, "Zero-length resource returned from RsConvertAmlToResource")); } ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES, "Type %.2X, AmlLength %.2X InternalLength %.2X\n", AcpiUtGetResourceType (Aml), Length, Resource->Length)); /* Point to the next structure in the output buffer */ *ResourcePtr = ACPI_NEXT_RESOURCE (Resource); return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiRsConvertResourcesToAml * * PARAMETERS: Resource - Pointer to the resource linked list * AmlSizeNeeded - Calculated size of the byte stream * needed from calling AcpiRsGetAmlLength() * The size of the OutputBuffer is * guaranteed to be >= AmlSizeNeeded * OutputBuffer - Pointer to the buffer that will * contain the byte stream * * RETURN: Status * * DESCRIPTION: Takes the resource linked list and parses it, creating a * byte stream of resources in the caller's output buffer * ******************************************************************************/ ACPI_STATUS AcpiRsConvertResourcesToAml ( ACPI_RESOURCE *Resource, ACPI_SIZE AmlSizeNeeded, UINT8 *OutputBuffer) { UINT8 *Aml = OutputBuffer; UINT8 *EndAml = OutputBuffer + AmlSizeNeeded; ACPI_RSCONVERT_INFO *ConversionTable; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (RsConvertResourcesToAml); /* Walk the resource descriptor list, convert each descriptor */ while (Aml < EndAml) { /* Validate the (internal) Resource Type */ if (Resource->Type > ACPI_RESOURCE_TYPE_MAX) { ACPI_ERROR ((AE_INFO, "Invalid descriptor type (0x%X) in resource list", Resource->Type)); return_ACPI_STATUS (AE_BAD_DATA); } /* Sanity check the length. It must not be zero, or we loop forever */ if (!Resource->Length) { ACPI_ERROR ((AE_INFO, "Invalid zero length descriptor in resource list\n")); return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH); } /* Perform the conversion */ if (Resource->Type == ACPI_RESOURCE_TYPE_SERIAL_BUS) { if (Resource->Data.CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE) { ConversionTable = NULL; } else { /* This is an I2C, SPI, UART or CSI2 SerialBus descriptor */ ConversionTable = AcpiGbl_ConvertResourceSerialBusDispatch[ Resource->Data.CommonSerialBus.Type]; } } else { ConversionTable = AcpiGbl_SetResourceDispatch[Resource->Type]; } if (!ConversionTable) { ACPI_ERROR ((AE_INFO, "Invalid/unsupported resource descriptor: Type 0x%2.2X", Resource->Type)); return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE); } Status = AcpiRsConvertResourceToAml (Resource, ACPI_CAST_PTR (AML_RESOURCE, Aml), ConversionTable); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "Could not convert resource (type 0x%X) to AML", Resource->Type)); return_ACPI_STATUS (Status); } /* Perform final sanity check on the new AML resource descriptor */ Status = AcpiUtValidateResource ( NULL, ACPI_CAST_PTR (AML_RESOURCE, Aml), NULL); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Check for end-of-list, normal exit */ if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG) { /* An End Tag indicates the end of the input Resource Template */ return_ACPI_STATUS (AE_OK); } /* * Extract the total length of the new descriptor and set the * Aml to point to the next (output) resource descriptor */ Aml += AcpiUtGetDescriptorLength (Aml); /* Point to the next input resource descriptor */ Resource = ACPI_NEXT_RESOURCE (Resource); } /* Completed buffer, but did not find an EndTag resource descriptor */ return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG); }