/******************************************************************************* * * Module Name: dmresrc.c - Resource Descriptor disassembly * ******************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2021, 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 "acpi.h" #include "accommon.h" #include "amlcode.h" #include "acdisasm.h" #define _COMPONENT ACPI_CA_DEBUGGER ACPI_MODULE_NAME ("dbresrc") /* Dispatch tables for Resource disassembly functions */ static ACPI_RESOURCE_HANDLER AcpiGbl_DmResourceDispatch [] = { /* Small descriptors */ NULL, /* 0x00, Reserved */ NULL, /* 0x01, Reserved */ NULL, /* 0x02, Reserved */ NULL, /* 0x03, Reserved */ AcpiDmIrqDescriptor, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */ AcpiDmDmaDescriptor, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */ AcpiDmStartDependentDescriptor, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */ AcpiDmEndDependentDescriptor, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */ AcpiDmIoDescriptor, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */ AcpiDmFixedIoDescriptor, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */ AcpiDmFixedDmaDescriptor, /* 0x0A, ACPI_RESOURCE_NAME_FIXED_DMA */ NULL, /* 0x0B, Reserved */ NULL, /* 0x0C, Reserved */ NULL, /* 0x0D, Reserved */ AcpiDmVendorSmallDescriptor, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */ NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */ /* Large descriptors */ NULL, /* 0x00, Reserved */ AcpiDmMemory24Descriptor, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */ AcpiDmGenericRegisterDescriptor,/* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */ NULL, /* 0x03, Reserved */ AcpiDmVendorLargeDescriptor, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */ AcpiDmMemory32Descriptor, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */ AcpiDmFixedMemory32Descriptor, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */ AcpiDmDwordDescriptor, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */ AcpiDmWordDescriptor, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */ AcpiDmInterruptDescriptor, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */ AcpiDmQwordDescriptor, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */ AcpiDmExtendedDescriptor, /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */ AcpiDmGpioDescriptor, /* 0x0C, ACPI_RESOURCE_NAME_GPIO */ AcpiDmPinFunctionDescriptor, /* 0x0D, ACPI_RESOURCE_NAME_PIN_FUNCTION */ AcpiDmSerialBusDescriptor, /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS */ AcpiDmPinConfigDescriptor, /* 0x0F, ACPI_RESOURCE_NAME_PIN_CONFIG */ AcpiDmPinGroupDescriptor, /* 0x10, ACPI_RESOURCE_NAME_PIN_GROUP */ AcpiDmPinGroupFunctionDescriptor, /* 0x11, ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION */ AcpiDmPinGroupConfigDescriptor, /* 0x12, ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG */ }; /* Only used for single-threaded applications */ /* TBD: remove when name is passed as parameter to the dump functions */ static UINT32 ResourceName; /******************************************************************************* * * FUNCTION: AcpiDmDescriptorName * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Emit a name for the descriptor if one is present (indicated * by the name being changed from the default name.) A name is only * emitted if a reference to the descriptor has been made somewhere * in the original ASL code. * ******************************************************************************/ void AcpiDmDescriptorName ( void) { if (ResourceName == ACPI_DEFAULT_RESNAME) { return; } AcpiOsPrintf ("%4.4s", (char *) &ResourceName); } /******************************************************************************* * * FUNCTION: AcpiDmDumpInteger* * * PARAMETERS: Value - Value to emit * Name - Associated name (emitted as a comment) * * RETURN: None * * DESCRIPTION: Integer output helper functions * ******************************************************************************/ void AcpiDmDumpInteger8 ( UINT8 Value, const char *Name) { AcpiOsPrintf ("0x%2.2X, // %s\n", Value, Name); } void AcpiDmDumpInteger16 ( UINT16 Value, const char *Name) { AcpiOsPrintf ("0x%4.4X, // %s\n", Value, Name); } void AcpiDmDumpInteger32 ( UINT32 Value, const char *Name) { AcpiOsPrintf ("0x%8.8X, // %s\n", Value, Name); } void AcpiDmDumpInteger64 ( UINT64 Value, const char *Name) { AcpiOsPrintf ("0x%8.8X%8.8X, // %s\n", ACPI_FORMAT_UINT64 (Value), Name); } /******************************************************************************* * * FUNCTION: AcpiDmBitList * * PARAMETERS: Mask - 16-bit value corresponding to 16 interrupt * or DMA values * * RETURN: None * * DESCRIPTION: Dump a bit mask as a list of individual interrupt/DMA levels. * ******************************************************************************/ void AcpiDmBitList ( UINT16 Mask) { UINT32 i; BOOLEAN Previous = FALSE; /* Open the initializer list */ AcpiOsPrintf ("{"); /* Examine each bit */ for (i = 0; i < 16; i++) { /* Only interested in bits that are set to 1 */ if (Mask & 1) { if (Previous) { AcpiOsPrintf (","); } Previous = TRUE; AcpiOsPrintf ("%u", i); } Mask >>= 1; } /* Close list */ AcpiOsPrintf ("}\n"); } /******************************************************************************* * * FUNCTION: AcpiDmResourceTemplate * * PARAMETERS: Info - Current parse tree walk info * ByteData - Pointer to the byte list data * ByteCount - Length of the byte list * * RETURN: None * * DESCRIPTION: Dump the contents of a Resource Template containing a set of * Resource Descriptors. * ******************************************************************************/ void AcpiDmResourceTemplate ( ACPI_OP_WALK_INFO *Info, ACPI_PARSE_OBJECT *Op, UINT8 *ByteData, UINT32 ByteCount) { ACPI_STATUS Status; UINT32 CurrentByteOffset; UINT8 ResourceType; UINT32 ResourceLength; void *Aml; UINT32 Level; BOOLEAN DependentFns = FALSE; UINT8 ResourceIndex; ACPI_NAMESPACE_NODE *Node; if (Op->Asl.AmlOpcode != AML_FIELD_OP) { Info->MappingOp = Op; } Level = Info->Level; ResourceName = ACPI_DEFAULT_RESNAME; Node = Op->Common.Node; if (Node) { Node = Node->Child; } for (CurrentByteOffset = 0; CurrentByteOffset < ByteCount;) { Aml = &ByteData[CurrentByteOffset]; /* Get the descriptor type and length */ ResourceType = AcpiUtGetResourceType (Aml); ResourceLength = AcpiUtGetResourceLength (Aml); /* Validate the Resource Type and Resource Length */ Status = AcpiUtValidateResource (NULL, Aml, &ResourceIndex); if (ACPI_FAILURE (Status)) { AcpiOsPrintf ( "/*** Could not validate Resource, type (%X) %s***/\n", ResourceType, AcpiFormatException (Status)); return; } /* Point to next descriptor */ CurrentByteOffset += AcpiUtGetDescriptorLength (Aml); /* Descriptor pre-processing */ switch (ResourceType) { case ACPI_RESOURCE_NAME_START_DEPENDENT: /* Finish a previous StartDependentFns */ if (DependentFns) { Level--; AcpiDmIndent (Level); AcpiOsPrintf ("}\n"); } break; case ACPI_RESOURCE_NAME_END_DEPENDENT: Level--; DependentFns = FALSE; break; case ACPI_RESOURCE_NAME_END_TAG: /* Normal exit, the resource list is finished */ if (DependentFns) { /* * Close an open StartDependentDescriptor. This indicates a * missing EndDependentDescriptor. */ Level--; /* Go ahead and insert EndDependentFn() */ AcpiDmEndDependentDescriptor (Info, Aml, ResourceLength, Level); AcpiDmIndent (Level); AcpiOsPrintf ( "/*** Disassembler: inserted " "missing EndDependentFn () ***/\n"); } return; default: break; } /* Disassemble the resource structure */ if (Node) { ResourceName = Node->Name.Integer; Node = Node->Peer; } AcpiGbl_DmResourceDispatch [ResourceIndex] ( Info, Aml, ResourceLength, Level); /* Descriptor post-processing */ if (ResourceType == ACPI_RESOURCE_NAME_START_DEPENDENT) { DependentFns = TRUE; Level++; } } } /******************************************************************************* * * FUNCTION: AcpiDmIsResourceTemplate * * PARAMETERS: WalkState - Current walk info * Op - Buffer Op to be examined * * RETURN: Status. AE_OK if valid template * * DESCRIPTION: Walk a byte list to determine if it consists of a valid set * of resource descriptors. Nothing is output. * ******************************************************************************/ ACPI_STATUS AcpiDmIsResourceTemplate ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Op) { ACPI_STATUS Status; ACPI_PARSE_OBJECT *NextOp; UINT8 *Aml; UINT8 *EndAml; UINT32 BufferLength; UINT32 DeclaredBufferLength; /* This op must be a buffer */ if (Op->Common.AmlOpcode != AML_BUFFER_OP) { return (AE_TYPE); } /* * Get the declared length of the buffer. * This is the nn in "Buffer (nn)" */ NextOp = Op->Common.Value.Arg; if (!NextOp) { AcpiOsPrintf ("NULL byte list in buffer\n"); return (AE_TYPE); } DeclaredBufferLength = NextOp->Common.Value.Size; /* Get the length of the raw initialization byte list */ NextOp = NextOp->Common.Next; if (!NextOp) { return (AE_TYPE); } Aml = NextOp->Named.Data; BufferLength = NextOp->Common.Value.Size; /* * Any buffer smaller than one byte cannot possibly be a resource * template. Two bytes could possibly be a "NULL" resource template * with a lone end tag descriptor (as generated via * "ResourceTemplate(){}"), but this would be an extremely unusual * case, as the template would be essentially useless. The disassembler * therefore does not recognize any two-byte buffer as a resource * template. */ if (BufferLength <= 2) { return (AE_TYPE); } /* * Not a template if declared buffer length != actual length of the * initialization byte list. Because the resource macros will create * a buffer of the exact required length (buffer length will be equal * to the actual length). * * NOTE (April 2017): Resource templates with this issue have been * seen in the field. We still don't want to attempt to disassemble * a buffer like this to a resource template because this output * would not match the original input buffer (it would be shorter * than the original when the disassembled code is recompiled). * Basically, a buffer like this appears to be hand crafted in the * first place, so just emitting a buffer object instead of a * resource template more closely resembles the original ASL code. */ if (DeclaredBufferLength != BufferLength) { return (AE_TYPE); } /* Walk the byte list, abort on any invalid descriptor type or length */ Status = AcpiUtWalkAmlResources (WalkState, Aml, BufferLength, NULL, ACPI_CAST_INDIRECT_PTR (void, &EndAml)); if (ACPI_FAILURE (Status)) { return (AE_TYPE); } /* * For the resource template to be valid, one EndTag must appear * at the very end of the ByteList, not before. (For proper disassembly * of a ResourceTemplate, the buffer must not have any extra data after * the EndTag.) */ if ((Aml + BufferLength - sizeof (AML_RESOURCE_END_TAG)) != EndAml) { return (AE_AML_NO_RESOURCE_END_TAG); } /* * All resource descriptors are valid, therefore this list appears * to be a valid resource template */ return (AE_OK); }