diff options
Diffstat (limited to 'sys/contrib/dev/acpica/namespace/nsxfname.c')
| -rw-r--r-- | sys/contrib/dev/acpica/namespace/nsxfname.c | 644 |
1 files changed, 644 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/namespace/nsxfname.c b/sys/contrib/dev/acpica/namespace/nsxfname.c new file mode 100644 index 0000000..a2cd482 --- /dev/null +++ b/sys/contrib/dev/acpica/namespace/nsxfname.c @@ -0,0 +1,644 @@ +/****************************************************************************** + * + * Module Name: nsxfname - Public interfaces to the ACPI subsystem + * ACPI Namespace oriented interfaces + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2009, 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. + * + *****************************************************************************/ + +#define __NSXFNAME_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/acnamesp.h> +#include <contrib/dev/acpica/include/acparser.h> +#include <contrib/dev/acpica/include/amlcode.h> + + +#define _COMPONENT ACPI_NAMESPACE + ACPI_MODULE_NAME ("nsxfname") + + +/****************************************************************************** + * + * FUNCTION: AcpiGetHandle + * + * PARAMETERS: Parent - Object to search under (search scope). + * Pathname - Pointer to an asciiz string containing the + * name + * RetHandle - Where the return handle is returned + * + * RETURN: Status + * + * DESCRIPTION: This routine will search for a caller specified name in the + * name space. The caller can restrict the search region by + * specifying a non NULL parent. The parent value is itself a + * namespace handle. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiGetHandle ( + ACPI_HANDLE Parent, + ACPI_STRING Pathname, + ACPI_HANDLE *RetHandle) +{ + ACPI_STATUS Status; + ACPI_NAMESPACE_NODE *Node = NULL; + ACPI_NAMESPACE_NODE *PrefixNode = NULL; + + + ACPI_FUNCTION_ENTRY (); + + + /* Parameter Validation */ + + if (!RetHandle || !Pathname) + { + return (AE_BAD_PARAMETER); + } + + /* Convert a parent handle to a prefix node */ + + if (Parent) + { + PrefixNode = AcpiNsMapHandleToNode (Parent); + if (!PrefixNode) + { + return (AE_BAD_PARAMETER); + } + } + + /* + * Valid cases are: + * 1) Fully qualified pathname + * 2) Parent + Relative pathname + * + * Error for <null Parent + relative path> + */ + if (AcpiNsValidRootPrefix (Pathname[0])) + { + /* Pathname is fully qualified (starts with '\') */ + + /* Special case for root-only, since we can't search for it */ + + if (!ACPI_STRCMP (Pathname, ACPI_NS_ROOT_PATH)) + { + *RetHandle = AcpiNsConvertEntryToHandle (AcpiGbl_RootNode); + return (AE_OK); + } + } + else if (!PrefixNode) + { + /* Relative path with null prefix is disallowed */ + + return (AE_BAD_PARAMETER); + } + + /* Find the Node and convert to a handle */ + + Status = AcpiNsGetNode (PrefixNode, Pathname, ACPI_NS_NO_UPSEARCH, &Node); + if (ACPI_SUCCESS (Status)) + { + *RetHandle = AcpiNsConvertEntryToHandle (Node); + } + + return (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiGetHandle) + + +/****************************************************************************** + * + * FUNCTION: AcpiGetName + * + * PARAMETERS: Handle - Handle to be converted to a pathname + * NameType - Full pathname or single segment + * Buffer - Buffer for returned path + * + * RETURN: Pointer to a string containing the fully qualified Name. + * + * DESCRIPTION: This routine returns the fully qualified name associated with + * the Handle parameter. This and the AcpiPathnameToHandle are + * complementary functions. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiGetName ( + ACPI_HANDLE Handle, + UINT32 NameType, + ACPI_BUFFER *Buffer) +{ + ACPI_STATUS Status; + ACPI_NAMESPACE_NODE *Node; + + + /* Parameter validation */ + + if (NameType > ACPI_NAME_TYPE_MAX) + { + return (AE_BAD_PARAMETER); + } + + Status = AcpiUtValidateBuffer (Buffer); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + + if (NameType == ACPI_FULL_PATHNAME) + { + /* Get the full pathname (From the namespace root) */ + + Status = AcpiNsHandleToPathname (Handle, Buffer); + return (Status); + } + + /* + * Wants the single segment ACPI name. + * Validate handle and convert to a namespace Node + */ + Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + + Node = AcpiNsMapHandleToNode (Handle); + if (!Node) + { + Status = AE_BAD_PARAMETER; + goto UnlockAndExit; + } + + /* Validate/Allocate/Clear caller buffer */ + + Status = AcpiUtInitializeBuffer (Buffer, ACPI_PATH_SEGMENT_LENGTH); + if (ACPI_FAILURE (Status)) + { + goto UnlockAndExit; + } + + /* Just copy the ACPI name from the Node and zero terminate it */ + + ACPI_STRNCPY (Buffer->Pointer, AcpiUtGetNodeName (Node), + ACPI_NAME_SIZE); + ((char *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0; + Status = AE_OK; + + +UnlockAndExit: + + (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); + return (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiGetName) + + +/****************************************************************************** + * + * FUNCTION: AcpiGetObjectInfo + * + * PARAMETERS: Handle - Object Handle + * Buffer - Where the info is returned + * + * RETURN: Status + * + * DESCRIPTION: Returns information about an object as gleaned from the + * namespace node and possibly by running several standard + * control methods (Such as in the case of a device.) + * + ******************************************************************************/ + +ACPI_STATUS +AcpiGetObjectInfo ( + ACPI_HANDLE Handle, + ACPI_BUFFER *Buffer) +{ + ACPI_STATUS Status; + ACPI_NAMESPACE_NODE *Node; + ACPI_DEVICE_INFO *Info; + ACPI_DEVICE_INFO *ReturnInfo; + ACPI_COMPATIBLE_ID_LIST *CidList = NULL; + ACPI_SIZE Size; + + + /* Parameter validation */ + + if (!Handle || !Buffer) + { + return (AE_BAD_PARAMETER); + } + + Status = AcpiUtValidateBuffer (Buffer); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + + Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_DEVICE_INFO)); + if (!Info) + { + return (AE_NO_MEMORY); + } + + Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + Node = AcpiNsMapHandleToNode (Handle); + if (!Node) + { + (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); + Status = AE_BAD_PARAMETER; + goto Cleanup; + } + + /* Init return structure */ + + Size = sizeof (ACPI_DEVICE_INFO); + + Info->Type = Node->Type; + Info->Name = Node->Name.Integer; + Info->Valid = 0; + + if (Node->Type == ACPI_TYPE_METHOD) + { + Info->ParamCount = Node->Object->Method.ParamCount; + } + + Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* If not a device, we are all done */ + + if (Info->Type == ACPI_TYPE_DEVICE) + { + /* + * Get extra info for ACPI Devices objects only: + * Run the Device _HID, _UID, _CID, _STA, _ADR and _SxD methods. + * + * Note: none of these methods are required, so they may or may + * not be present for this device. The Info->Valid bitfield is used + * to indicate which methods were found and ran successfully. + */ + + /* Execute the Device._HID method */ + + Status = AcpiUtExecute_HID (Node, &Info->HardwareId); + if (ACPI_SUCCESS (Status)) + { + Info->Valid |= ACPI_VALID_HID; + } + + /* Execute the Device._UID method */ + + Status = AcpiUtExecute_UID (Node, &Info->UniqueId); + if (ACPI_SUCCESS (Status)) + { + Info->Valid |= ACPI_VALID_UID; + } + + /* Execute the Device._CID method */ + + Status = AcpiUtExecute_CID (Node, &CidList); + if (ACPI_SUCCESS (Status)) + { + Size += CidList->Size; + Info->Valid |= ACPI_VALID_CID; + } + + /* Execute the Device._STA method */ + + Status = AcpiUtExecute_STA (Node, &Info->CurrentStatus); + if (ACPI_SUCCESS (Status)) + { + Info->Valid |= ACPI_VALID_STA; + } + + /* Execute the Device._ADR method */ + + Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node, + &Info->Address); + if (ACPI_SUCCESS (Status)) + { + Info->Valid |= ACPI_VALID_ADR; + } + + /* Execute the Device._SxD methods */ + + Status = AcpiUtExecute_Sxds (Node, Info->HighestDstates); + if (ACPI_SUCCESS (Status)) + { + Info->Valid |= ACPI_VALID_SXDS; + } + } + + /* Validate/Allocate/Clear caller buffer */ + + Status = AcpiUtInitializeBuffer (Buffer, Size); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* Populate the return buffer */ + + ReturnInfo = Buffer->Pointer; + ACPI_MEMCPY (ReturnInfo, Info, sizeof (ACPI_DEVICE_INFO)); + + if (CidList) + { + ACPI_MEMCPY (&ReturnInfo->CompatibilityId, CidList, CidList->Size); + } + + +Cleanup: + ACPI_FREE (Info); + if (CidList) + { + ACPI_FREE (CidList); + } + return (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiGetObjectInfo) + + +/****************************************************************************** + * + * FUNCTION: AcpiInstallMethod + * + * PARAMETERS: Buffer - An ACPI table containing one control method + * + * RETURN: Status + * + * DESCRIPTION: Install a control method into the namespace. If the method + * name already exists in the namespace, it is overwritten. The + * input buffer must contain a valid DSDT or SSDT containing a + * single control method. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiInstallMethod ( + UINT8 *Buffer) +{ + ACPI_TABLE_HEADER *Table = ACPI_CAST_PTR (ACPI_TABLE_HEADER, Buffer); + UINT8 *AmlBuffer; + UINT8 *AmlStart; + char *Path; + ACPI_NAMESPACE_NODE *Node; + ACPI_OPERAND_OBJECT *MethodObj; + ACPI_PARSE_STATE ParserState; + UINT32 AmlLength; + UINT16 Opcode; + UINT8 MethodFlags; + ACPI_STATUS Status; + + + /* Parameter validation */ + + if (!Buffer) + { + return (AE_BAD_PARAMETER); + } + + /* Table must be a DSDT or SSDT */ + + if (!ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT) && + !ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_SSDT)) + { + return (AE_BAD_HEADER); + } + + /* First AML opcode in the table must be a control method */ + + ParserState.Aml = Buffer + sizeof (ACPI_TABLE_HEADER); + Opcode = AcpiPsPeekOpcode (&ParserState); + if (Opcode != AML_METHOD_OP) + { + return (AE_BAD_PARAMETER); + } + + /* Extract method information from the raw AML */ + + ParserState.Aml += AcpiPsGetOpcodeSize (Opcode); + ParserState.PkgEnd = AcpiPsGetNextPackageEnd (&ParserState); + Path = AcpiPsGetNextNamestring (&ParserState); + MethodFlags = *ParserState.Aml++; + AmlStart = ParserState.Aml; + AmlLength = ACPI_PTR_DIFF (ParserState.PkgEnd, AmlStart); + + /* + * Allocate resources up-front. We don't want to have to delete a new + * node from the namespace if we cannot allocate memory. + */ + AmlBuffer = ACPI_ALLOCATE (AmlLength); + if (!AmlBuffer) + { + return (AE_NO_MEMORY); + } + + MethodObj = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); + if (!MethodObj) + { + ACPI_FREE (AmlBuffer); + return (AE_NO_MEMORY); + } + + /* Lock namespace for AcpiNsLookup, we may be creating a new node */ + + Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE (Status)) + { + goto ErrorExit; + } + + /* The lookup either returns an existing node or creates a new one */ + + Status = AcpiNsLookup (NULL, Path, ACPI_TYPE_METHOD, ACPI_IMODE_LOAD_PASS1, + ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND, NULL, &Node); + + (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); + + if (ACPI_FAILURE (Status)) /* NsLookup */ + { + if (Status != AE_ALREADY_EXISTS) + { + goto ErrorExit; + } + + /* Node existed previously, make sure it is a method node */ + + if (Node->Type != ACPI_TYPE_METHOD) + { + Status = AE_TYPE; + goto ErrorExit; + } + } + + /* Copy the method AML to the local buffer */ + + ACPI_MEMCPY (AmlBuffer, AmlStart, AmlLength); + + /* Initialize the method object with the new method's information */ + + MethodObj->Method.AmlStart = AmlBuffer; + MethodObj->Method.AmlLength = AmlLength; + + MethodObj->Method.ParamCount = (UINT8) + (MethodFlags & AML_METHOD_ARG_COUNT); + + MethodObj->Method.MethodFlags = (UINT8) + (MethodFlags & ~AML_METHOD_ARG_COUNT); + + if (MethodFlags & AML_METHOD_SERIALIZED) + { + MethodObj->Method.SyncLevel = (UINT8) + ((MethodFlags & AML_METHOD_SYNC_LEVEL) >> 4); + } + + /* + * Now that it is complete, we can attach the new method object to + * the method Node (detaches/deletes any existing object) + */ + Status = AcpiNsAttachObject (Node, MethodObj, + ACPI_TYPE_METHOD); + + /* + * Flag indicates AML buffer is dynamic, must be deleted later. + * Must be set only after attach above. + */ + Node->Flags |= ANOBJ_ALLOCATED_BUFFER; + + /* Remove local reference to the method object */ + + AcpiUtRemoveReference (MethodObj); + return (Status); + + +ErrorExit: + + ACPI_FREE (AmlBuffer); + ACPI_FREE (MethodObj); + return (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiInstallMethod) |
