1 /******************************************************************************
3 * Module Name: utxface - External interfaces for "global" ACPI functions
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
13 * All rights reserved.
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
38 * The above copyright and patent license is granted only if the following
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
73 * 3.4. Intel retains all right, title, and interest in and to the Original
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
81 * 4. Disclaimer and Export Compliance
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
115 *****************************************************************************/
118 #define __UTXFACE_C__
120 #include <contrib/dev/acpica/acpi.h>
121 #include <contrib/dev/acpica/acevents.h>
122 #include <contrib/dev/acpica/acnamesp.h>
123 #include <contrib/dev/acpica/acdebug.h>
125 #define _COMPONENT ACPI_UTILITIES
126 ACPI_MODULE_NAME ("utxface")
129 /*******************************************************************************
131 * FUNCTION: AcpiInitializeSubsystem
137 * DESCRIPTION: Initializes all global variables. This is the first function
138 * called, so any early initialization belongs here.
140 ******************************************************************************/
143 AcpiInitializeSubsystem (
149 ACPI_FUNCTION_TRACE ("AcpiInitializeSubsystem");
152 ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ());
154 /* Initialize the OS-Dependent layer */
156 Status = AcpiOsInitialize ();
157 if (ACPI_FAILURE (Status))
159 ACPI_REPORT_ERROR (("OSD failed to initialize, %s\n",
160 AcpiFormatException (Status)));
161 return_ACPI_STATUS (Status);
164 /* Initialize all globals used by the subsystem */
166 AcpiUtInitGlobals ();
168 /* Create the default mutex objects */
170 Status = AcpiUtMutexInitialize ();
171 if (ACPI_FAILURE (Status))
173 ACPI_REPORT_ERROR (("Global mutex creation failure, %s\n",
174 AcpiFormatException (Status)));
175 return_ACPI_STATUS (Status);
179 * Initialize the namespace manager and
180 * the root of the namespace tree
182 Status = AcpiNsRootInitialize ();
183 if (ACPI_FAILURE (Status))
185 ACPI_REPORT_ERROR (("Namespace initialization failure, %s\n",
186 AcpiFormatException (Status)));
187 return_ACPI_STATUS (Status);
190 /* If configured, initialize the AML debugger */
192 ACPI_DEBUGGER_EXEC (Status = AcpiDbInitialize ());
194 return_ACPI_STATUS (Status);
198 /*******************************************************************************
200 * FUNCTION: AcpiEnableSubsystem
202 * PARAMETERS: Flags - Init/enable Options
206 * DESCRIPTION: Completes the subsystem initialization including hardware.
207 * Puts system into ACPI mode if it isn't already.
209 ******************************************************************************/
212 AcpiEnableSubsystem (
215 ACPI_STATUS Status = AE_OK;
218 ACPI_FUNCTION_TRACE ("AcpiEnableSubsystem");
222 * We must initialize the hardware before we can enable ACPI.
223 * The values from the FADT are validated here.
225 if (!(Flags & ACPI_NO_HARDWARE_INIT))
227 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
228 "[Init] Initializing ACPI hardware\n"));
230 Status = AcpiHwInitialize ();
231 if (ACPI_FAILURE (Status))
233 return_ACPI_STATUS (Status);
237 /* Enable ACPI mode */
239 if (!(Flags & ACPI_NO_ACPI_ENABLE))
241 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
243 AcpiGbl_OriginalMode = AcpiHwGetMode();
245 Status = AcpiEnable ();
246 if (ACPI_FAILURE (Status))
248 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "AcpiEnable failed.\n"));
249 return_ACPI_STATUS (Status);
254 * Install the default OpRegion handlers. These are installed unless
255 * other handlers have already been installed via the
256 * InstallAddressSpaceHandler interface.
258 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
260 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
261 "[Init] Installing default address space handlers\n"));
263 Status = AcpiEvInstallRegionHandlers ();
264 if (ACPI_FAILURE (Status))
266 return_ACPI_STATUS (Status);
271 * Initialize ACPI Event handling (Fixed and General Purpose)
273 * NOTE: We must have the hardware AND events initialized before we can
274 * execute ANY control methods SAFELY. Any control method can require
275 * ACPI hardware support, so the hardware MUST be initialized before
278 if (!(Flags & ACPI_NO_EVENT_INIT))
280 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
281 "[Init] Initializing ACPI events\n"));
283 Status = AcpiEvInitializeEvents ();
284 if (ACPI_FAILURE (Status))
286 return_ACPI_STATUS (Status);
290 /* Install the SCI handler and Global Lock handler */
292 if (!(Flags & ACPI_NO_HANDLER_INIT))
294 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
295 "[Init] Installing SCI/GL handlers\n"));
297 Status = AcpiEvInstallXruptHandlers ();
298 if (ACPI_FAILURE (Status))
300 return_ACPI_STATUS (Status);
304 return_ACPI_STATUS (Status);
307 /*******************************************************************************
309 * FUNCTION: AcpiInitializeObjects
311 * PARAMETERS: Flags - Init/enable Options
315 * DESCRIPTION: Completes namespace initialization by initializing device
316 * objects and executing AML code for Regions, buffers, etc.
318 ******************************************************************************/
321 AcpiInitializeObjects (
324 ACPI_STATUS Status = AE_OK;
327 ACPI_FUNCTION_TRACE ("AcpiInitializeObjects");
331 * Run all _REG methods
333 * NOTE: Any objects accessed
334 * by the _REG methods will be automatically initialized, even if they
335 * contain executable AML (see call to AcpiNsInitializeObjects below).
337 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
339 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
340 "[Init] Executing _REG OpRegion methods\n"));
342 Status = AcpiEvInitializeOpRegions ();
343 if (ACPI_FAILURE (Status))
345 return_ACPI_STATUS (Status);
350 * Initialize the objects that remain uninitialized. This
351 * runs the executable AML that may be part of the declaration of these
352 * objects: OperationRegions, BufferFields, Buffers, and Packages.
354 if (!(Flags & ACPI_NO_OBJECT_INIT))
356 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
357 "[Init] Completing Initialization of ACPI Objects\n"));
359 Status = AcpiNsInitializeObjects ();
360 if (ACPI_FAILURE (Status))
362 return_ACPI_STATUS (Status);
367 * Initialize all device objects in the namespace
368 * This runs the _STA and _INI methods.
370 if (!(Flags & ACPI_NO_DEVICE_INIT))
372 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
373 "[Init] Initializing ACPI Devices\n"));
375 Status = AcpiNsInitializeDevices ();
376 if (ACPI_FAILURE (Status))
378 return_ACPI_STATUS (Status);
383 * Empty the caches (delete the cached objects) on the assumption that
384 * the table load filled them up more than they will be at runtime --
385 * thus wasting non-paged memory.
387 Status = AcpiPurgeCachedObjects ();
389 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
390 return_ACPI_STATUS (Status);
394 /*******************************************************************************
396 * FUNCTION: AcpiTerminate
402 * DESCRIPTION: Shutdown the ACPI subsystem. Release all resources.
404 ******************************************************************************/
413 ACPI_FUNCTION_TRACE ("AcpiTerminate");
416 /* Terminate the AML Debugger if present */
418 ACPI_DEBUGGER_EXEC(AcpiGbl_DbTerminateThreads = TRUE);
420 /* Shutdown and free all resources */
422 AcpiUtSubsystemShutdown ();
425 /* Free the mutex objects */
427 AcpiUtMutexTerminate ();
432 /* Shut down the debugger */
437 /* Now we can shutdown the OS-dependent layer */
439 Status = AcpiOsTerminate ();
440 return_ACPI_STATUS (Status);
444 /*******************************************************************************
446 * FUNCTION: AcpiSubsystemStatus
450 * RETURN: Status of the ACPI subsystem
452 * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
453 * before making any other calls, to ensure the subsystem
454 * initialized successfully.
456 ******************************************************************************/
459 AcpiSubsystemStatus (
463 if (AcpiGbl_StartupFlags & ACPI_INITIALIZED_OK)
474 /*******************************************************************************
476 * FUNCTION: AcpiGetSystemInfo
478 * PARAMETERS: OutBuffer - A buffer to receive the resources for the
481 * RETURN: Status - the status of the call
483 * DESCRIPTION: This function is called to get information about the current
484 * state of the ACPI subsystem. It will return system information
487 * If the function fails an appropriate status will be returned
488 * and the value of OutBuffer is undefined.
490 ******************************************************************************/
494 ACPI_BUFFER *OutBuffer)
496 ACPI_SYSTEM_INFO *InfoPtr;
501 ACPI_FUNCTION_TRACE ("AcpiGetSystemInfo");
504 /* Parameter validation */
506 Status = AcpiUtValidateBuffer (OutBuffer);
507 if (ACPI_FAILURE (Status))
509 return_ACPI_STATUS (Status);
512 /* Validate/Allocate/Clear caller buffer */
514 Status = AcpiUtInitializeBuffer (OutBuffer, sizeof (ACPI_SYSTEM_INFO));
515 if (ACPI_FAILURE (Status))
517 return_ACPI_STATUS (Status);
521 * Populate the return buffer
523 InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer;
525 InfoPtr->AcpiCaVersion = ACPI_CA_VERSION;
527 /* System flags (ACPI capabilities) */
529 InfoPtr->Flags = ACPI_SYS_MODE_ACPI;
531 /* Timer resolution - 24 or 32 bits */
535 InfoPtr->TimerResolution = 0;
537 else if (AcpiGbl_FADT->TmrValExt == 0)
539 InfoPtr->TimerResolution = 24;
543 InfoPtr->TimerResolution = 32;
546 /* Clear the reserved fields */
548 InfoPtr->Reserved1 = 0;
549 InfoPtr->Reserved2 = 0;
551 /* Current debug levels */
553 InfoPtr->DebugLayer = AcpiDbgLayer;
554 InfoPtr->DebugLevel = AcpiDbgLevel;
556 /* Current status of the ACPI tables, per table type */
558 InfoPtr->NumTableTypes = NUM_ACPI_TABLE_TYPES;
559 for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++)
561 InfoPtr->TableInfo[i].Count = AcpiGbl_TableLists[i].Count;
564 return_ACPI_STATUS (AE_OK);
568 /*****************************************************************************
570 * FUNCTION: AcpiInstallInitializationHandler
572 * PARAMETERS: Handler - Callback procedure
573 * Function - Not (currently) used, see below
577 * DESCRIPTION: Install an initialization handler
579 * TBD: When a second function is added, must save the Function also.
581 ****************************************************************************/
584 AcpiInstallInitializationHandler (
585 ACPI_INIT_HANDLER Handler,
591 return (AE_BAD_PARAMETER);
594 if (AcpiGbl_InitHandler)
596 return (AE_ALREADY_EXISTS);
599 AcpiGbl_InitHandler = Handler;
604 /*****************************************************************************
606 * FUNCTION: AcpiPurgeCachedObjects
612 * DESCRIPTION: Empty all caches (delete the cached objects)
614 ****************************************************************************/
617 AcpiPurgeCachedObjects (
620 ACPI_FUNCTION_TRACE ("AcpiPurgeCachedObjects");
622 (void) AcpiOsPurgeCache (AcpiGbl_StateCache);
623 (void) AcpiOsPurgeCache (AcpiGbl_OperandCache);
624 (void) AcpiOsPurgeCache (AcpiGbl_PsNodeCache);
625 (void) AcpiOsPurgeCache (AcpiGbl_PsNodeExtCache);
626 return_ACPI_STATUS (AE_OK);