/****************************************************************************** * * Module Name: dmrestag - Add tags to resource descriptors (Application-level) * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2011, 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. * *****************************************************************************/ #include "acpi.h" #include "accommon.h" #include "acparser.h" #include "acdisasm.h" #include "acnamesp.h" #include "amlcode.h" /* This module used for application-level code only */ #define _COMPONENT ACPI_CA_DISASSEMBLER ACPI_MODULE_NAME ("dmrestag") /* Local prototypes */ static void AcpiDmUpdateResourceName ( ACPI_NAMESPACE_NODE *ResourceNode); static char * AcpiDmSearchTagList ( UINT32 BitIndex, ACPI_RESOURCE_TAG *TagList); static char * AcpiDmGetResourceTag ( UINT32 BitIndex, AML_RESOURCE *Resource, UINT8 ResourceIndex); static char * AcpiGetTagPathname ( ACPI_NAMESPACE_NODE *BufferNode, ACPI_NAMESPACE_NODE *ResourceNode, UINT32 BitIndex); static ACPI_NAMESPACE_NODE * AcpiDmGetResourceNode ( ACPI_NAMESPACE_NODE *BufferNode, UINT32 BitIndex); static ACPI_STATUS AcpiDmAddResourceToNamespace ( UINT8 *Aml, UINT32 Length, UINT32 Offset, UINT8 ResourceIndex, void *Context); static void AcpiDmAddResourcesToNamespace ( ACPI_NAMESPACE_NODE *BufferNode, ACPI_PARSE_OBJECT *Op); /****************************************************************************** * * Resource Tag tables * * These are the predefined tags that refer to elements of a resource * descriptor. Each name and offset is defined in the ACPI specification. * * Each table entry contains the bit offset of the field and the associated * name. * ******************************************************************************/ static ACPI_RESOURCE_TAG AcpiDmIrqTags[] = { {( 1 * 8), ACPI_RESTAG_INTERRUPT}, {( 3 * 8) + 0, ACPI_RESTAG_INTERRUPTTYPE}, {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTLEVEL}, {( 3 * 8) + 4, ACPI_RESTAG_INTERRUPTSHARE}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmDmaTags[] = { {( 1 * 8), ACPI_RESTAG_DMA}, {( 2 * 8) + 0, ACPI_RESTAG_XFERTYPE}, {( 2 * 8) + 2, ACPI_RESTAG_BUSMASTER}, {( 2 * 8) + 5, ACPI_RESTAG_DMATYPE}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmIoTags[] = { {( 1 * 8) + 0, ACPI_RESTAG_DECODE}, {( 2 * 8), ACPI_RESTAG_MINADDR}, {( 4 * 8), ACPI_RESTAG_MAXADDR}, {( 6 * 8), ACPI_RESTAG_ALIGNMENT}, {( 7 * 8), ACPI_RESTAG_LENGTH}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmFixedIoTags[] = { {( 1 * 8), ACPI_RESTAG_BASEADDRESS}, {( 3 * 8), ACPI_RESTAG_LENGTH}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmMemory24Tags[] = { {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, {( 4 * 8), ACPI_RESTAG_MINADDR}, {( 6 * 8), ACPI_RESTAG_MAXADDR}, {( 8 * 8), ACPI_RESTAG_ALIGNMENT}, {(10 * 8), ACPI_RESTAG_LENGTH}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmRegisterTags[] = { {( 3 * 8), ACPI_RESTAG_ADDRESSSPACE}, {( 4 * 8), ACPI_RESTAG_REGISTERBITWIDTH}, {( 5 * 8), ACPI_RESTAG_REGISTERBITOFFSET}, {( 6 * 8), ACPI_RESTAG_ACCESSSIZE}, {( 7 * 8), ACPI_RESTAG_ADDRESS}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmMemory32Tags[] = { {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, {( 4 * 8), ACPI_RESTAG_MINADDR}, {( 8 * 8), ACPI_RESTAG_MAXADDR}, {(12 * 8), ACPI_RESTAG_ALIGNMENT}, {(16 * 8), ACPI_RESTAG_LENGTH}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmFixedMemory32Tags[] = { {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, {( 4 * 8), ACPI_RESTAG_BASEADDRESS}, {( 8 * 8), ACPI_RESTAG_LENGTH}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmInterruptTags[] = { {( 3 * 8) + 1, ACPI_RESTAG_INTERRUPTTYPE}, {( 3 * 8) + 2, ACPI_RESTAG_INTERRUPTLEVEL}, {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE}, {( 5 * 8), ACPI_RESTAG_INTERRUPT}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmAddress16Tags[] = { {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, {( 6 * 8), ACPI_RESTAG_GRANULARITY}, {( 8 * 8), ACPI_RESTAG_MINADDR}, {(10 * 8), ACPI_RESTAG_MAXADDR}, {(12 * 8), ACPI_RESTAG_TRANSLATION}, {(14 * 8), ACPI_RESTAG_LENGTH}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmAddress32Tags[] = { {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, {( 6 * 8), ACPI_RESTAG_GRANULARITY}, {(10 * 8), ACPI_RESTAG_MINADDR}, {(14 * 8), ACPI_RESTAG_MAXADDR}, {(18 * 8), ACPI_RESTAG_TRANSLATION}, {(22 * 8), ACPI_RESTAG_LENGTH}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmAddress64Tags[] = { {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, {( 6 * 8), ACPI_RESTAG_GRANULARITY}, {(14 * 8), ACPI_RESTAG_MINADDR}, {(22 * 8), ACPI_RESTAG_MAXADDR}, {(30 * 8), ACPI_RESTAG_TRANSLATION}, {(38 * 8), ACPI_RESTAG_LENGTH}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmExtendedAddressTags[] = { {( 4 * 8) + 1, ACPI_RESTAG_DECODE}, {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE}, {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE}, {( 8 * 8), ACPI_RESTAG_GRANULARITY}, {(16 * 8), ACPI_RESTAG_MINADDR}, {(24 * 8), ACPI_RESTAG_MAXADDR}, {(32 * 8), ACPI_RESTAG_TRANSLATION}, {(40 * 8), ACPI_RESTAG_LENGTH}, {(48 * 8), ACPI_RESTAG_TYPESPECIFICATTRIBUTES}, {0, NULL} }; /* Special-case tables for the type-specific flags */ static ACPI_RESOURCE_TAG AcpiDmMemoryFlagTags[] = { {( 5 * 8) + 0, ACPI_RESTAG_READWRITETYPE}, {( 5 * 8) + 1, ACPI_RESTAG_MEMTYPE}, {( 5 * 8) + 3, ACPI_RESTAG_MEMATTRIBUTES}, {( 5 * 8) + 5, ACPI_RESTAG_TYPE}, {0, NULL} }; static ACPI_RESOURCE_TAG AcpiDmIoFlagTags[] = { {( 5 * 8) + 0, ACPI_RESTAG_RANGETYPE}, {( 5 * 8) + 4, ACPI_RESTAG_TYPE}, {( 5 * 8) + 5, ACPI_RESTAG_TRANSTYPE}, {0, NULL} }; /* Dispatch table used to obtain the correct tag table for a descriptor */ static ACPI_RESOURCE_TAG *AcpiGbl_ResourceTags [] = { /* Small descriptors */ NULL, /* 0x00, Reserved */ NULL, /* 0x01, Reserved */ NULL, /* 0x02, Reserved */ NULL, /* 0x03, Reserved */ AcpiDmIrqTags, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */ AcpiDmDmaTags, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */ NULL, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */ NULL, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */ AcpiDmIoTags, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */ AcpiDmFixedIoTags, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */ NULL, /* 0x0A, Reserved */ NULL, /* 0x0B, Reserved */ NULL, /* 0x0C, Reserved */ NULL, /* 0x0D, Reserved */ NULL, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */ NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */ /* Large descriptors */ NULL, /* 0x00, Reserved */ AcpiDmMemory24Tags, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */ AcpiDmRegisterTags, /* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */ NULL, /* 0x03, Reserved */ NULL, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */ AcpiDmMemory32Tags, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */ AcpiDmFixedMemory32Tags, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */ AcpiDmAddress32Tags, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */ AcpiDmAddress16Tags, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */ AcpiDmInterruptTags, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */ AcpiDmAddress64Tags, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */ AcpiDmExtendedAddressTags /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */ }; /* * Globals used to generate unique resource descriptor names. We use names that * start with underscore and a prefix letter that is not used by other ACPI * reserved names. To this, we append hex 0x00 through 0xFF. These 5 prefixes * allow for 5*256 = 1280 unique names, probably sufficient for any single ASL * file. If this becomes too small, we can use alpha+numerals for a total * of 5*36*36 = 6480. */ #define ACPI_NUM_RES_PREFIX 5 static UINT32 AcpiGbl_NextResourceId = 0; static UINT8 AcpiGbl_NextPrefix = 0; static char AcpiGbl_Prefix[ACPI_NUM_RES_PREFIX] = {'Y','Z','J','K','X'}; /******************************************************************************* * * FUNCTION: AcpiDmCheckResourceReference * * PARAMETERS: Op - Parse Op for the AML opcode * WalkState - Current walk state (with valid scope) * * RETURN: None * * DESCRIPTION: Convert a reference to a resource descriptor to a symbolic * reference if possible * * NOTE: Bit index is used to transparently handle both resource bit * fields and byte fields. * ******************************************************************************/ void AcpiDmCheckResourceReference ( ACPI_PARSE_OBJECT *Op, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_PARSE_OBJECT *BufferNameOp; ACPI_PARSE_OBJECT *IndexOp; ACPI_NAMESPACE_NODE *BufferNode; ACPI_NAMESPACE_NODE *ResourceNode; const ACPI_OPCODE_INFO *OpInfo; char *Pathname; UINT32 BitIndex; /* We are only interested in the CreateXxxxField opcodes */ OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); if (OpInfo->Type != AML_TYPE_CREATE_FIELD) { return; } /* Get the buffer term operand */ BufferNameOp = AcpiPsGetDepthNext (NULL, Op); /* Must be a named buffer, not an arg or local or method call */ if (BufferNameOp->Common.AmlOpcode != AML_INT_NAMEPATH_OP) { return; } /* Get the Index term, must be an integer constant to convert */ IndexOp = BufferNameOp->Common.Next; OpInfo = AcpiPsGetOpcodeInfo (IndexOp->Common.AmlOpcode); if (OpInfo->ObjectType != ACPI_TYPE_INTEGER) { return; } /* Get the bit offset of the descriptor within the buffer */ if ((Op->Common.AmlOpcode == AML_CREATE_BIT_FIELD_OP) || (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)) { /* Index operand is a bit offset */ BitIndex = (UINT32) IndexOp->Common.Value.Integer; } else { /* Index operand is a byte offset, convert to bits */ BitIndex = (UINT32) ACPI_MUL_8 (IndexOp->Common.Value.Integer); } /* Lookup the buffer in the namespace */ Status = AcpiNsLookup (WalkState->ScopeInfo, BufferNameOp->Common.Value.String, ACPI_TYPE_BUFFER, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &BufferNode); if (ACPI_FAILURE (Status)) { return; } /* Validate object type, we must have a buffer */ if (BufferNode->Type != ACPI_TYPE_BUFFER) { return; } /* Find the resource descriptor node corresponding to the index */ ResourceNode = AcpiDmGetResourceNode (BufferNode, BitIndex); if (!ResourceNode) { return; } /* Translate the Index to a resource tag pathname */ Pathname = AcpiGetTagPathname (BufferNode, ResourceNode, BitIndex); if (Pathname) { /* Complete the conversion of the Index to a symbol */ IndexOp->Common.AmlOpcode = AML_INT_NAMEPATH_OP; IndexOp->Common.Value.String = Pathname; } } /******************************************************************************* * * FUNCTION: AcpiDmGetResourceNode * * PARAMETERS: BufferNode - Node for the parent buffer * BitIndex - Index into the resource descriptor * * RETURN: Namespace node for the resource descriptor. NULL if not found * * DESCRIPTION: Find a resource descriptor that corresponds to the bit index * ******************************************************************************/ static ACPI_NAMESPACE_NODE * AcpiDmGetResourceNode ( ACPI_NAMESPACE_NODE *BufferNode, UINT32 BitIndex) { ACPI_NAMESPACE_NODE *Node; UINT32 ByteIndex = ACPI_DIV_8 (BitIndex); /* * Child list contains an entry for each resource descriptor. Find * the descriptor that corresponds to the Index. * * If there are no children, this is not a resource template */ Node = BufferNode->Child; while (Node) { /* * Check if the Index falls within this resource. * * Value contains the resource offset, Object contains the resource * length (both in bytes) */ if ((ByteIndex >= Node->Value) && (ByteIndex < (Node->Value + Node->Length))) { return (Node); } Node = Node->Peer; } return (NULL); } /******************************************************************************* * * FUNCTION: AcpiGetTagPathname * * PARAMETERS: BufferNode - Node for the parent buffer * ResourceNode - Node for a resource descriptor * BitIndex - Index into the resource descriptor * * RETURN: Full pathname for a resource tag. NULL if no match. * Path is returned in AML (packed) format. * * DESCRIPTION: Convert a BitIndex into a symbolic resource tag (full pathname) * ******************************************************************************/ static char * AcpiGetTagPathname ( ACPI_NAMESPACE_NODE *BufferNode, ACPI_NAMESPACE_NODE *ResourceNode, UINT32 BitIndex) { ACPI_STATUS Status; UINT32 ResourceBitIndex; UINT8 ResourceTableIndex; ACPI_SIZE RequiredSize; char *Pathname; AML_RESOURCE *Aml; ACPI_PARSE_OBJECT *Op; char *InternalPath; char *Tag; /* Get the Op that contains the actual buffer data */ Op = BufferNode->Op->Common.Value.Arg; Op = Op->Common.Next; if (!Op) { return (NULL); } /* Get the individual resource descriptor and validate it */ Aml = ACPI_CAST_PTR (AML_RESOURCE, &Op->Named.Data[ResourceNode->Value]); Status = AcpiUtValidateResource (Aml, &ResourceTableIndex); if (ACPI_FAILURE (Status)) { return (NULL); } /* Get offset into this descriptor (from offset into entire buffer) */ ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value); /* Get the tag associated with this resource descriptor and offset */ Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex); if (!Tag) { return (NULL); } /* * Now that we know that we have a reference that can be converted to a * symbol, change the name of the resource to a unique name. */ AcpiDmUpdateResourceName (ResourceNode); /* Get the full pathname to the parent buffer */ RequiredSize = AcpiNsGetPathnameLength (BufferNode); if (!RequiredSize) { return (NULL); } Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH); if (!Pathname) { return (NULL); } Status = AcpiNsBuildExternalPath (BufferNode, RequiredSize, Pathname); if (ACPI_FAILURE (Status)) { return (NULL); } /* * Create the full path to the resource and tag by: remove the buffer name, * append the resource descriptor name, append a dot, append the tag name. * * TBD: Always using the full path is a bit brute force, the path can be * often be optimized with carats (if the original buffer namepath is a * single nameseg). This doesn't really matter, because these paths do not * end up in the final compiled AML, it's just an appearance issue for the * disassembled code. */ Pathname[ACPI_STRLEN (Pathname) - ACPI_NAME_SIZE] = 0; ACPI_STRNCAT (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE); ACPI_STRCAT (Pathname, "."); ACPI_STRNCAT (Pathname, Tag, ACPI_NAME_SIZE); /* Internalize the namepath to AML format */ AcpiNsInternalizeName (Pathname, &InternalPath); ACPI_FREE (Pathname); return (InternalPath); } /******************************************************************************* * * FUNCTION: AcpiDmUpdateResourceName * * PARAMETERS: ResourceNode - Node for a resource descriptor * * RETURN: Stores new name in the ResourceNode * * DESCRIPTION: Create a new, unique name for a resource descriptor. Used by * both the disassembly of the descriptor itself and any symbolic * references to the descriptor. Ignored if a unique name has * already been assigned to the resource. * * NOTE: Single threaded, suitable for applications only! * ******************************************************************************/ static void AcpiDmUpdateResourceName ( ACPI_NAMESPACE_NODE *ResourceNode) { char Name[ACPI_NAME_SIZE]; /* Ignore if a unique name has already been assigned */ if (ResourceNode->Name.Integer != ACPI_DEFAULT_RESNAME) { return; } /* Generate a new ACPI name for the descriptor */ Name[0] = '_'; Name[1] = AcpiGbl_Prefix[AcpiGbl_NextPrefix]; Name[2] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 4); Name[3] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 0); /* Update globals for next name */ AcpiGbl_NextResourceId++; if (AcpiGbl_NextResourceId >= 256) { AcpiGbl_NextResourceId = 0; AcpiGbl_NextPrefix++; if (AcpiGbl_NextPrefix > ACPI_NUM_RES_PREFIX) { AcpiGbl_NextPrefix = 0; } } /* Change the resource descriptor name */ ResourceNode->Name.Integer = *ACPI_CAST_PTR (UINT32, &Name[0]); } /******************************************************************************* * * FUNCTION: AcpiDmGetResourceTag * * PARAMETERS: BitIndex - Index into the resource descriptor * Resource - Pointer to the raw resource data * ResourceIndex - Index correspoinding to the resource type * * RETURN: Pointer to the resource tag (ACPI_NAME). NULL if no match. * * DESCRIPTION: Convert a BitIndex into a symbolic resource tag. * ******************************************************************************/ static char * AcpiDmGetResourceTag ( UINT32 BitIndex, AML_RESOURCE *Resource, UINT8 ResourceIndex) { ACPI_RESOURCE_TAG *TagList; char *Tag = NULL; /* Get the tag list for this resource descriptor type */ TagList = AcpiGbl_ResourceTags[ResourceIndex]; if (!TagList) { /* There are no tags for this resource type */ return (NULL); } /* * Handle the type-specific flags field for the address descriptors. * Kindof brute force, but just blindly search for an index match. */ switch (Resource->DescriptorType) { case ACPI_RESOURCE_NAME_ADDRESS16: case ACPI_RESOURCE_NAME_ADDRESS32: case ACPI_RESOURCE_NAME_ADDRESS64: case ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64: if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_MEMORY_RANGE) { Tag = AcpiDmSearchTagList (BitIndex, AcpiDmMemoryFlagTags); } else if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_IO_RANGE) { Tag = AcpiDmSearchTagList (BitIndex, AcpiDmIoFlagTags); } /* If we found a match, all done. Else, drop to normal search below */ if (Tag) { return (Tag); } break; default: break; } /* Search the tag list for this descriptor type */ Tag = AcpiDmSearchTagList (BitIndex, TagList); return (Tag); } /******************************************************************************* * * FUNCTION: AcpiDmSearchTagList * * PARAMETERS: BitIndex - Index into the resource descriptor * TagList - List to search * * RETURN: Pointer to a tag (ACPI_NAME). NULL if no match found. * * DESCRIPTION: Search a tag list for a match to the input BitIndex. Matches * a fixed offset to a symbolic resource tag name. * ******************************************************************************/ static char * AcpiDmSearchTagList ( UINT32 BitIndex, ACPI_RESOURCE_TAG *TagList) { /* * Walk the null-terminated tag list to find a matching bit offset. * We are looking for an exact match. */ for ( ; TagList->Tag; TagList++) { if (BitIndex == TagList->BitIndex) { return (TagList->Tag); } } /* A matching offset was not found */ return (NULL); } /******************************************************************************* * * FUNCTION: AcpiDmFindResources * * PARAMETERS: Root - Root of the parse tree * * RETURN: None * * DESCRIPTION: Add all ResourceTemplate declarations to the namespace. Each * resource descriptor in each template is given a node -- used * for later conversion of resource references to symbolic refs. * ******************************************************************************/ void AcpiDmFindResources ( ACPI_PARSE_OBJECT *Root) { ACPI_PARSE_OBJECT *Op = Root; ACPI_PARSE_OBJECT *Parent; /* Walk the entire parse tree */ while (Op) { /* We are interested in Buffer() declarations */ if (Op->Common.AmlOpcode == AML_BUFFER_OP) { /* And only declarations of the form Name (XXXX, Buffer()... ) */ Parent = Op->Common.Parent; if (Parent->Common.AmlOpcode == AML_NAME_OP) { /* * If the buffer is a resource template, add the individual * resource descriptors to the namespace, as children of the * buffer node. */ if (ACPI_SUCCESS (AcpiDmIsResourceTemplate (Op))) { Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE; AcpiDmAddResourcesToNamespace (Parent->Common.Node, Op); } } } Op = AcpiPsGetDepthNext (Root, Op); } } /******************************************************************************* * * FUNCTION: AcpiDmAddResourcesToNamespace * * PARAMETERS: BufferNode - Node for the parent buffer * Op - Parse op for the buffer * * RETURN: None * * DESCRIPTION: Add an entire resource template to the namespace. Each * resource descriptor is added as a namespace node. * ******************************************************************************/ static void AcpiDmAddResourcesToNamespace ( ACPI_NAMESPACE_NODE *BufferNode, ACPI_PARSE_OBJECT *Op) { ACPI_PARSE_OBJECT *NextOp; /* Get to the ByteData list */ NextOp = Op->Common.Value.Arg; NextOp = NextOp->Common.Next; if (!NextOp) { return; } /* Set Node and Op to point to each other */ BufferNode->Op = Op; Op->Common.Node = BufferNode; /* * Insert each resource into the namespace * NextOp contains the Aml pointer and the Aml length */ AcpiUtWalkAmlResources ((UINT8 *) NextOp->Named.Data, (ACPI_SIZE) NextOp->Common.Value.Integer, AcpiDmAddResourceToNamespace, BufferNode); } /******************************************************************************* * * FUNCTION: AcpiDmAddResourceToNamespace * * PARAMETERS: ACPI_WALK_AML_CALLBACK * BufferNode - Node for the parent buffer * * RETURN: Status * * DESCRIPTION: Add one resource descriptor to the namespace as a child of the * parent buffer. The same name is used for each descriptor. This * is changed later to a unique name if the resource is actually * referenced by an AML operator. * ******************************************************************************/ static ACPI_STATUS AcpiDmAddResourceToNamespace ( UINT8 *Aml, UINT32 Length, UINT32 Offset, UINT8 ResourceIndex, void *Context) { ACPI_STATUS Status; ACPI_GENERIC_STATE ScopeInfo; ACPI_NAMESPACE_NODE *Node; /* TBD: Don't need to add descriptors that have no tags defined? */ /* Add the resource to the namespace, as child of the buffer */ ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Context); Status = AcpiNsLookup (&ScopeInfo, "_TMP", ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS2, ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_PREFIX_IS_SCOPE, NULL, &Node); if (ACPI_FAILURE (Status)) { return (AE_OK); } /* Set the name to the default, changed later if resource is referenced */ Node->Name.Integer = ACPI_DEFAULT_RESNAME; /* Save the offset of the descriptor (within the original buffer) */ Node->Value = Offset; Node->Length = Length; return (AE_OK); }