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Diffstat (limited to 'sys/contrib/dev/acpica/common/dmrestag.c')
| -rw-r--r-- | sys/contrib/dev/acpica/common/dmrestag.c | 990 |
1 files changed, 990 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/common/dmrestag.c b/sys/contrib/dev/acpica/common/dmrestag.c new file mode 100644 index 0000000..ed8b36b --- /dev/null +++ b/sys/contrib/dev/acpica/common/dmrestag.c @@ -0,0 +1,990 @@ +/****************************************************************************** + * + * Module Name: dmrestag - Add tags to resource descriptors (Application-level) + * $Revision: 1.11 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2007, 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 <contrib/dev/acpica/acpi.h> +#include <contrib/dev/acpica/acparser.h> +#include <contrib/dev/acpica/acdisasm.h> +#include <contrib/dev/acpica/acnamesp.h> +#include <contrib/dev/acpica/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 UINT8 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); + } + + /* List is circular, this flag marks the end */ + + if (Node->Flags & ANOBJ_END_OF_PEER_LIST) + { + return (NULL); + } + + 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); + Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH); + if (!Pathname) + { + return (NULL); + } + + AcpiNsBuildExternalPath (BufferNode, RequiredSize, Pathname); + + /* + * 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 (AcpiGbl_NextResourceId, 4); + Name[3] = AcpiUtHexToAsciiChar (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 = *(UINT32 *) Name; +} + + +/******************************************************************************* + * + * 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); +} + |
