nsxfname.c revision 126372
1254721Semaste/****************************************************************************** 2254721Semaste * 3254721Semaste * Module Name: nsxfname - Public interfaces to the ACPI subsystem 4254721Semaste * ACPI Namespace oriented interfaces 5254721Semaste * $Revision: 100 $ 6254721Semaste * 7254721Semaste *****************************************************************************/ 8254721Semaste 9254721Semaste/****************************************************************************** 10254721Semaste * 11254721Semaste * 1. Copyright Notice 12254721Semaste * 13254721Semaste * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp. 14254721Semaste * All rights reserved. 15254721Semaste * 16254721Semaste * 2. License 17254721Semaste * 18254721Semaste * 2.1. This is your license from Intel Corp. under its intellectual property 19254721Semaste * rights. You may have additional license terms from the party that provided 20254721Semaste * you this software, covering your right to use that party's intellectual 21254721Semaste * property rights. 22254721Semaste * 23254721Semaste * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 24254721Semaste * copy of the source code appearing in this file ("Covered Code") an 25254721Semaste * irrevocable, perpetual, worldwide license under Intel's copyrights in the 26254721Semaste * base code distributed originally by Intel ("Original Intel Code") to copy, 27254721Semaste * make derivatives, distribute, use and display any portion of the Covered 28254721Semaste * Code in any form, with the right to sublicense such rights; and 29254721Semaste * 30254721Semaste * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 31254721Semaste * license (with the right to sublicense), under only those claims of Intel 32254721Semaste * patents that are infringed by the Original Intel Code, to make, use, sell, 33254721Semaste * offer to sell, and import the Covered Code and derivative works thereof 34254721Semaste * solely to the minimum extent necessary to exercise the above copyright 35254721Semaste * license, and in no event shall the patent license extend to any additions 36254721Semaste * to or modifications of the Original Intel Code. No other license or right 37254721Semaste * is granted directly or by implication, estoppel or otherwise; 38254721Semaste * 39254721Semaste * The above copyright and patent license is granted only if the following 40254721Semaste * conditions are met: 41254721Semaste * 42254721Semaste * 3. Conditions 43254721Semaste * 44254721Semaste * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45254721Semaste * Redistribution of source code of any substantial portion of the Covered 46254721Semaste * Code or modification with rights to further distribute source must include 47254721Semaste * the above Copyright Notice, the above License, this list of Conditions, 48254721Semaste * and the following Disclaimer and Export Compliance provision. In addition, 49254721Semaste * Licensee must cause all Covered Code to which Licensee contributes to 50254721Semaste * contain a file documenting the changes Licensee made to create that Covered 51254721Semaste * Code and the date of any change. Licensee must include in that file the 52254721Semaste * documentation of any changes made by any predecessor Licensee. Licensee 53254721Semaste * must include a prominent statement that the modification is derived, 54254721Semaste * directly or indirectly, from Original Intel Code. 55254721Semaste * 56254721Semaste * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57254721Semaste * Redistribution of source code of any substantial portion of the Covered 58254721Semaste * Code or modification without rights to further distribute source must 59254721Semaste * include the following Disclaimer and Export Compliance provision in the 60254721Semaste * documentation and/or other materials provided with distribution. In 61254721Semaste * addition, Licensee may not authorize further sublicense of source of any 62254721Semaste * portion of the Covered Code, and must include terms to the effect that the 63254721Semaste * license from Licensee to its licensee is limited to the intellectual 64254721Semaste * property embodied in the software Licensee provides to its licensee, and 65254721Semaste * not to intellectual property embodied in modifications its licensee may 66254721Semaste * make. 67254721Semaste * 68254721Semaste * 3.3. Redistribution of Executable. Redistribution in executable form of any 69254721Semaste * substantial portion of the Covered Code or modification must reproduce the 70254721Semaste * above Copyright Notice, and the following Disclaimer and Export Compliance 71254721Semaste * provision in the documentation and/or other materials provided with the 72254721Semaste * distribution. 73254721Semaste * 74254721Semaste * 3.4. Intel retains all right, title, and interest in and to the Original 75254721Semaste * Intel Code. 76254721Semaste * 77254721Semaste * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78254721Semaste * Intel shall be used in advertising or otherwise to promote the sale, use or 79254721Semaste * other dealings in products derived from or relating to the Covered Code 80254721Semaste * without prior written authorization from Intel. 81254721Semaste * 82254721Semaste * 4. Disclaimer and Export Compliance 83254721Semaste * 84254721Semaste * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85254721Semaste * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86254721Semaste * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87254721Semaste * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 88254721Semaste * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89254721Semaste * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90254721Semaste * PARTICULAR PURPOSE. 91254721Semaste * 92254721Semaste * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93254721Semaste * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94254721Semaste * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95254721Semaste * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96254721Semaste * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97254721Semaste * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98254721Semaste * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99254721Semaste * LIMITED REMEDY. 100254721Semaste * 101254721Semaste * 4.3. Licensee shall not export, either directly or indirectly, any of this 102254721Semaste * software or system incorporating such software without first obtaining any 103254721Semaste * required license or other approval from the U. S. Department of Commerce or 104254721Semaste * any other agency or department of the United States Government. In the 105254721Semaste * event Licensee exports any such software from the United States or 106254721Semaste * re-exports any such software from a foreign destination, Licensee shall 107254721Semaste * ensure that the distribution and export/re-export of the software is in 108254721Semaste * compliance with all laws, regulations, orders, or other restrictions of the 109254721Semaste * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110254721Semaste * any of its subsidiaries will export/re-export any technical data, process, 111254721Semaste * software, or service, directly or indirectly, to any country for which the 112254721Semaste * United States government or any agency thereof requires an export license, 113254721Semaste * other governmental approval, or letter of assurance, without first obtaining 114254721Semaste * such license, approval or letter. 115254721Semaste * 116254721Semaste *****************************************************************************/ 117254721Semaste 118254721Semaste#define __NSXFNAME_C__ 119254721Semaste 120254721Semaste#include "acpi.h" 121254721Semaste#include "acnamesp.h" 122254721Semaste 123254721Semaste 124254721Semaste#define _COMPONENT ACPI_NAMESPACE 125254721Semaste ACPI_MODULE_NAME ("nsxfname") 126254721Semaste 127254721Semaste 128254721Semaste/****************************************************************************** 129254721Semaste * 130254721Semaste * FUNCTION: AcpiGetHandle 131254721Semaste * 132254721Semaste * PARAMETERS: Parent - Object to search under (search scope). 133254721Semaste * PathName - Pointer to an asciiz string containing the 134254721Semaste * name 135254721Semaste * RetHandle - Where the return handle is placed 136254721Semaste * 137254721Semaste * RETURN: Status 138254721Semaste * 139254721Semaste * DESCRIPTION: This routine will search for a caller specified name in the 140254721Semaste * name space. The caller can restrict the search region by 141254721Semaste * specifying a non NULL parent. The parent value is itself a 142254721Semaste * namespace handle. 143254721Semaste * 144254721Semaste ******************************************************************************/ 145254721Semaste 146254721SemasteACPI_STATUS 147254721SemasteAcpiGetHandle ( 148254721Semaste ACPI_HANDLE Parent, 149254721Semaste ACPI_STRING Pathname, 150254721Semaste ACPI_HANDLE *RetHandle) 151254721Semaste{ 152254721Semaste ACPI_STATUS Status; 153254721Semaste ACPI_NAMESPACE_NODE *Node = NULL; 154254721Semaste ACPI_NAMESPACE_NODE *PrefixNode = NULL; 155254721Semaste 156254721Semaste 157254721Semaste ACPI_FUNCTION_ENTRY (); 158254721Semaste 159254721Semaste 160254721Semaste /* Parameter Validation */ 161254721Semaste 162254721Semaste if (!RetHandle || !Pathname) 163254721Semaste { 164254721Semaste return (AE_BAD_PARAMETER); 165254721Semaste } 166254721Semaste 167254721Semaste /* Convert a parent handle to a prefix node */ 168254721Semaste 169254721Semaste if (Parent) 170254721Semaste { 171254721Semaste Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 172254721Semaste if (ACPI_FAILURE (Status)) 173254721Semaste { 174254721Semaste return (Status); 175254721Semaste } 176254721Semaste 177254721Semaste PrefixNode = AcpiNsMapHandleToNode (Parent); 178254721Semaste if (!PrefixNode) 179254721Semaste { 180254721Semaste (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 181254721Semaste return (AE_BAD_PARAMETER); 182254721Semaste } 183254721Semaste 184254721Semaste Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 185254721Semaste if (ACPI_FAILURE (Status)) 186254721Semaste { 187254721Semaste return (Status); 188254721Semaste } 189254721Semaste } 190254721Semaste 191254721Semaste /* Special case for root, since we can't search for it */ 192254721Semaste 193254721Semaste if (ACPI_STRCMP (Pathname, ACPI_NS_ROOT_PATH) == 0) 194254721Semaste { 195254721Semaste *RetHandle = AcpiNsConvertEntryToHandle (AcpiGbl_RootNode); 196254721Semaste return (AE_OK); 197254721Semaste } 198254721Semaste 199254721Semaste /* 200254721Semaste * Find the Node and convert to a handle 201254721Semaste */ 202254721Semaste Status = AcpiNsGetNodeByPath (Pathname, PrefixNode, ACPI_NS_NO_UPSEARCH, 203254721Semaste &Node); 204254721Semaste 205254721Semaste *RetHandle = NULL; 206254721Semaste if (ACPI_SUCCESS (Status)) 207254721Semaste { 208254721Semaste *RetHandle = AcpiNsConvertEntryToHandle (Node); 209254721Semaste } 210254721Semaste 211254721Semaste return (Status); 212254721Semaste} 213254721Semaste 214254721Semaste 215254721Semaste/****************************************************************************** 216254721Semaste * 217254721Semaste * FUNCTION: AcpiGetName 218254721Semaste * 219254721Semaste * PARAMETERS: Handle - Handle to be converted to a pathname 220254721Semaste * NameType - Full pathname or single segment 221254721Semaste * Buffer - Buffer for returned path 222254721Semaste * 223254721Semaste * RETURN: Pointer to a string containing the fully qualified Name. 224254721Semaste * 225254721Semaste * DESCRIPTION: This routine returns the fully qualified name associated with 226254721Semaste * the Handle parameter. This and the AcpiPathnameToHandle are 227254721Semaste * complementary functions. 228254721Semaste * 229254721Semaste ******************************************************************************/ 230254721Semaste 231254721SemasteACPI_STATUS 232254721SemasteAcpiGetName ( 233254721Semaste ACPI_HANDLE Handle, 234254721Semaste UINT32 NameType, 235254721Semaste ACPI_BUFFER *Buffer) 236254721Semaste{ 237254721Semaste ACPI_STATUS Status; 238254721Semaste ACPI_NAMESPACE_NODE *Node; 239254721Semaste 240254721Semaste 241254721Semaste /* Parameter validation */ 242254721Semaste 243254721Semaste if (NameType > ACPI_NAME_TYPE_MAX) 244254721Semaste { 245254721Semaste return (AE_BAD_PARAMETER); 246254721Semaste } 247254721Semaste 248254721Semaste Status = AcpiUtValidateBuffer (Buffer); 249254721Semaste if (ACPI_FAILURE (Status)) 250254721Semaste { 251254721Semaste return (Status); 252254721Semaste } 253254721Semaste 254254721Semaste if (NameType == ACPI_FULL_PATHNAME) 255254721Semaste { 256254721Semaste /* Get the full pathname (From the namespace root) */ 257254721Semaste 258254721Semaste Status = AcpiNsHandleToPathname (Handle, Buffer); 259254721Semaste return (Status); 260254721Semaste } 261254721Semaste 262254721Semaste /* 263254721Semaste * Wants the single segment ACPI name. 264254721Semaste * Validate handle and convert to a namespace Node 265254721Semaste */ 266254721Semaste Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 267254721Semaste if (ACPI_FAILURE (Status)) 268254721Semaste { 269254721Semaste return (Status); 270254721Semaste } 271254721Semaste 272254721Semaste Node = AcpiNsMapHandleToNode (Handle); 273254721Semaste if (!Node) 274254721Semaste { 275254721Semaste Status = AE_BAD_PARAMETER; 276254721Semaste goto UnlockAndExit; 277254721Semaste } 278254721Semaste 279254721Semaste /* Validate/Allocate/Clear caller buffer */ 280254721Semaste 281254721Semaste Status = AcpiUtInitializeBuffer (Buffer, ACPI_PATH_SEGMENT_LENGTH); 282254721Semaste if (ACPI_FAILURE (Status)) 283254721Semaste { 284254721Semaste goto UnlockAndExit; 285254721Semaste } 286254721Semaste 287254721Semaste /* Just copy the ACPI name from the Node and zero terminate it */ 288254721Semaste 289254721Semaste ACPI_STRNCPY (Buffer->Pointer, AcpiUtGetNodeName (Node), 290254721Semaste ACPI_NAME_SIZE); 291254721Semaste ((char *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0; 292254721Semaste Status = AE_OK; 293254721Semaste 294254721Semaste 295254721SemasteUnlockAndExit: 296254721Semaste 297254721Semaste (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 298254721Semaste return (Status); 299254721Semaste} 300254721Semaste 301254721Semaste 302254721Semaste/****************************************************************************** 303254721Semaste * 304254721Semaste * FUNCTION: AcpiGetObjectInfo 305254721Semaste * 306254721Semaste * PARAMETERS: Handle - Object Handle 307254721Semaste * Info - Where the info is returned 308254721Semaste * 309254721Semaste * RETURN: Status 310254721Semaste * 311254721Semaste * DESCRIPTION: Returns information about an object as gleaned from the 312254721Semaste * namespace node and possibly by running several standard 313254721Semaste * control methods (Such as in the case of a device.) 314254721Semaste * 315254721Semaste ******************************************************************************/ 316254721Semaste 317254721SemasteACPI_STATUS 318254721SemasteAcpiGetObjectInfo ( 319254721Semaste ACPI_HANDLE Handle, 320254721Semaste ACPI_BUFFER *Buffer) 321254721Semaste{ 322254721Semaste ACPI_STATUS Status; 323254721Semaste ACPI_NAMESPACE_NODE *Node; 324254721Semaste ACPI_DEVICE_INFO Info; 325254721Semaste ACPI_DEVICE_INFO *ReturnInfo; 326254721Semaste ACPI_COMPATIBLE_ID_LIST *CidList = NULL; 327254721Semaste ACPI_SIZE Size; 328254721Semaste 329254721Semaste 330254721Semaste /* Parameter validation */ 331254721Semaste 332254721Semaste if (!Handle || !Buffer) 333254721Semaste { 334254721Semaste return (AE_BAD_PARAMETER); 335254721Semaste } 336254721Semaste 337254721Semaste Status = AcpiUtValidateBuffer (Buffer); 338254721Semaste if (ACPI_FAILURE (Status)) 339254721Semaste { 340254721Semaste return (Status); 341254721Semaste } 342254721Semaste 343254721Semaste Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 344254721Semaste if (ACPI_FAILURE (Status)) 345254721Semaste { 346254721Semaste return (Status); 347254721Semaste } 348254721Semaste 349254721Semaste Node = AcpiNsMapHandleToNode (Handle); 350254721Semaste if (!Node) 351254721Semaste { 352254721Semaste (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 353254721Semaste return (AE_BAD_PARAMETER); 354254721Semaste } 355254721Semaste 356254721Semaste /* Init return structure */ 357254721Semaste 358254721Semaste Size = sizeof (ACPI_DEVICE_INFO); 359254721Semaste ACPI_MEMSET (&Info, 0, Size); 360254721Semaste 361254721Semaste Info.Type = Node->Type; 362254721Semaste Info.Name = Node->Name.Integer; 363254721Semaste Info.Valid = 0; 364254721Semaste 365254721Semaste Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 366254721Semaste if (ACPI_FAILURE (Status)) 367254721Semaste { 368254721Semaste return (Status); 369254721Semaste } 370254721Semaste 371254721Semaste /* If not a device, we are all done */ 372254721Semaste 373254721Semaste if (Info.Type == ACPI_TYPE_DEVICE) 374254721Semaste { 375254721Semaste /* 376254721Semaste * Get extra info for ACPI Devices objects only: 377254721Semaste * Run the Device _HID, _UID, _CID, _STA, and _ADR methods. 378254721Semaste * 379254721Semaste * Note: none of these methods are required, so they may or may 380254721Semaste * not be present for this device. The Info.Valid bitfield is used 381254721Semaste * to indicate which methods were found and ran successfully. 382254721Semaste */ 383254721Semaste 384254721Semaste /* Execute the Device._HID method */ 385254721Semaste 386254721Semaste Status = AcpiUtExecute_HID (Node, &Info.HardwareId); 387254721Semaste if (ACPI_SUCCESS (Status)) 388254721Semaste { 389254721Semaste Info.Valid |= ACPI_VALID_HID; 390254721Semaste } 391254721Semaste 392254721Semaste /* Execute the Device._UID method */ 393254721Semaste 394254721Semaste Status = AcpiUtExecute_UID (Node, &Info.UniqueId); 395254721Semaste if (ACPI_SUCCESS (Status)) 396254721Semaste { 397254721Semaste Info.Valid |= ACPI_VALID_UID; 398254721Semaste } 399254721Semaste 400254721Semaste /* Execute the Device._CID method */ 401254721Semaste 402254721Semaste Status = AcpiUtExecute_CID (Node, &CidList); 403254721Semaste if (ACPI_SUCCESS (Status)) 404254721Semaste { 405254721Semaste Size += ((ACPI_SIZE) CidList->Count - 1) * 406254721Semaste sizeof (ACPI_COMPATIBLE_ID); 407254721Semaste Info.Valid |= ACPI_VALID_CID; 408254721Semaste } 409254721Semaste 410254721Semaste /* Execute the Device._STA method */ 411254721Semaste 412254721Semaste Status = AcpiUtExecute_STA (Node, &Info.CurrentStatus); 413254721Semaste if (ACPI_SUCCESS (Status)) 414254721Semaste { 415254721Semaste Info.Valid |= ACPI_VALID_STA; 416254721Semaste } 417254721Semaste 418254721Semaste /* Execute the Device._ADR method */ 419254721Semaste 420254721Semaste Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node, 421254721Semaste &Info.Address); 422254721Semaste if (ACPI_SUCCESS (Status)) 423254721Semaste { 424254721Semaste Info.Valid |= ACPI_VALID_ADR; 425254721Semaste } 426254721Semaste 427254721Semaste /* Execute the Device._SxD methods */ 428254721Semaste 429254721Semaste Status = AcpiUtExecute_Sxds (Node, Info.HighestDstates); 430254721Semaste if (ACPI_SUCCESS (Status)) 431254721Semaste { 432254721Semaste Info.Valid |= ACPI_VALID_STA; 433254721Semaste } 434254721Semaste 435254721Semaste Status = AE_OK; 436254721Semaste } 437254721Semaste 438254721Semaste /* Validate/Allocate/Clear caller buffer */ 439254721Semaste 440254721Semaste Status = AcpiUtInitializeBuffer (Buffer, Size); 441254721Semaste if (ACPI_FAILURE (Status)) 442254721Semaste { 443254721Semaste goto Cleanup; 444254721Semaste } 445254721Semaste 446254721Semaste /* Populate the return buffer */ 447254721Semaste 448254721Semaste ReturnInfo = Buffer->Pointer; 449254721Semaste ACPI_MEMCPY (ReturnInfo, &Info, sizeof (ACPI_DEVICE_INFO)); 450254721Semaste 451254721Semaste if (CidList) 452254721Semaste { 453254721Semaste ACPI_MEMCPY (&ReturnInfo->CompatibilityId, CidList, CidList->Size); 454254721Semaste } 455254721Semaste 456254721Semaste 457254721SemasteCleanup: 458254721Semaste if (CidList) 459254721Semaste { 460254721Semaste ACPI_MEM_FREE (CidList); 461254721Semaste } 462254721Semaste return (Status); 463254721Semaste} 464254721Semaste 465254721Semaste