1 /******************************************************************************
3 * Module Name: utxface - External interfaces for "global" ACPI functions
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2007, 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 AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE;
153 ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ());
155 /* Initialize the OS-Dependent layer */
157 Status = AcpiOsInitialize ();
158 if (ACPI_FAILURE (Status))
160 ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization"));
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_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation"));
174 return_ACPI_STATUS (Status);
178 * Initialize the namespace manager and
179 * the root of the namespace tree
181 Status = AcpiNsRootInitialize ();
182 if (ACPI_FAILURE (Status))
184 ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization"));
185 return_ACPI_STATUS (Status);
188 /* If configured, initialize the AML debugger */
190 ACPI_DEBUGGER_EXEC (Status = AcpiDbInitialize ());
191 return_ACPI_STATUS (Status);
194 ACPI_EXPORT_SYMBOL (AcpiInitializeSubsystem)
197 /*******************************************************************************
199 * FUNCTION: AcpiEnableSubsystem
201 * PARAMETERS: Flags - Init/enable Options
205 * DESCRIPTION: Completes the subsystem initialization including hardware.
206 * Puts system into ACPI mode if it isn't already.
208 ******************************************************************************/
211 AcpiEnableSubsystem (
214 ACPI_STATUS Status = AE_OK;
217 ACPI_FUNCTION_TRACE (AcpiEnableSubsystem);
220 /* Enable ACPI mode */
222 if (!(Flags & ACPI_NO_ACPI_ENABLE))
224 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
226 AcpiGbl_OriginalMode = AcpiHwGetMode();
228 Status = AcpiEnable ();
229 if (ACPI_FAILURE (Status))
231 ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
232 return_ACPI_STATUS (Status);
237 * Install the default OpRegion handlers. These are installed unless
238 * other handlers have already been installed via the
239 * InstallAddressSpaceHandler interface.
241 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
243 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
244 "[Init] Installing default address space handlers\n"));
246 Status = AcpiEvInstallRegionHandlers ();
247 if (ACPI_FAILURE (Status))
249 return_ACPI_STATUS (Status);
254 * Initialize ACPI Event handling (Fixed and General Purpose)
256 * Note1: We must have the hardware and events initialized before we can
257 * execute any control methods safely. Any control method can require
258 * ACPI hardware support, so the hardware must be fully initialized before
259 * any method execution!
261 * Note2: Fixed events are initialized and enabled here. GPEs are
262 * initialized, but cannot be enabled until after the hardware is
263 * completely initialized (SCI and GlobalLock activated)
265 if (!(Flags & ACPI_NO_EVENT_INIT))
267 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
268 "[Init] Initializing ACPI events\n"));
270 Status = AcpiEvInitializeEvents ();
271 if (ACPI_FAILURE (Status))
273 return_ACPI_STATUS (Status);
278 * Install the SCI handler and Global Lock handler. This completes the
279 * hardware initialization.
281 if (!(Flags & ACPI_NO_HANDLER_INIT))
283 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
284 "[Init] Installing SCI/GL handlers\n"));
286 Status = AcpiEvInstallXruptHandlers ();
287 if (ACPI_FAILURE (Status))
289 return_ACPI_STATUS (Status);
294 * Complete the GPE initialization for the GPE blocks defined in the FADT
295 * (GPE block 0 and 1).
297 * Note1: This is where the _PRW methods are executed for the GPEs. These
298 * methods can only be executed after the SCI and Global Lock handlers are
299 * installed and initialized.
301 * Note2: Currently, there seems to be no need to run the _REG methods
302 * before execution of the _PRW methods and enabling of the GPEs.
304 if (!(Flags & ACPI_NO_EVENT_INIT))
306 Status = AcpiEvInstallFadtGpes ();
307 if (ACPI_FAILURE (Status))
313 return_ACPI_STATUS (Status);
316 ACPI_EXPORT_SYMBOL (AcpiEnableSubsystem)
319 /*******************************************************************************
321 * FUNCTION: AcpiInitializeObjects
323 * PARAMETERS: Flags - Init/enable Options
327 * DESCRIPTION: Completes namespace initialization by initializing device
328 * objects and executing AML code for Regions, buffers, etc.
330 ******************************************************************************/
333 AcpiInitializeObjects (
336 ACPI_STATUS Status = AE_OK;
339 ACPI_FUNCTION_TRACE (AcpiInitializeObjects);
343 * Run all _REG methods
345 * Note: Any objects accessed by the _REG methods will be automatically
346 * initialized, even if they contain executable AML (see the call to
347 * AcpiNsInitializeObjects below).
349 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
351 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
352 "[Init] Executing _REG OpRegion methods\n"));
354 Status = AcpiEvInitializeOpRegions ();
355 if (ACPI_FAILURE (Status))
357 return_ACPI_STATUS (Status);
362 * Initialize the objects that remain uninitialized. This runs the
363 * executable AML that may be part of the declaration of these objects:
364 * OperationRegions, BufferFields, Buffers, and Packages.
366 if (!(Flags & ACPI_NO_OBJECT_INIT))
368 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
369 "[Init] Completing Initialization of ACPI Objects\n"));
371 Status = AcpiNsInitializeObjects ();
372 if (ACPI_FAILURE (Status))
374 return_ACPI_STATUS (Status);
379 * Initialize all device objects in the namespace. This runs the device
380 * _STA and _INI methods.
382 if (!(Flags & ACPI_NO_DEVICE_INIT))
384 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
385 "[Init] Initializing ACPI Devices\n"));
387 Status = AcpiNsInitializeDevices ();
388 if (ACPI_FAILURE (Status))
390 return_ACPI_STATUS (Status);
395 * Empty the caches (delete the cached objects) on the assumption that
396 * the table load filled them up more than they will be at runtime --
397 * thus wasting non-paged memory.
399 Status = AcpiPurgeCachedObjects ();
401 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
402 return_ACPI_STATUS (Status);
405 ACPI_EXPORT_SYMBOL (AcpiInitializeObjects)
408 /*******************************************************************************
410 * FUNCTION: AcpiTerminate
416 * DESCRIPTION: Shutdown the ACPI subsystem. Release all resources.
418 ******************************************************************************/
427 ACPI_FUNCTION_TRACE (AcpiTerminate);
430 /* Terminate the AML Debugger if present */
432 ACPI_DEBUGGER_EXEC(AcpiGbl_DbTerminateThreads = TRUE);
434 /* Shutdown and free all resources */
436 AcpiUtSubsystemShutdown ();
439 /* Free the mutex objects */
441 AcpiUtMutexTerminate ();
446 /* Shut down the debugger */
451 /* Now we can shutdown the OS-dependent layer */
453 Status = AcpiOsTerminate ();
454 return_ACPI_STATUS (Status);
457 ACPI_EXPORT_SYMBOL (AcpiTerminate)
460 /*******************************************************************************
462 * FUNCTION: AcpiSubsystemStatus
466 * RETURN: Status of the ACPI subsystem
468 * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
469 * before making any other calls, to ensure the subsystem
470 * initialized successfully.
472 ******************************************************************************/
475 AcpiSubsystemStatus (
479 if (AcpiGbl_StartupFlags & ACPI_INITIALIZED_OK)
489 ACPI_EXPORT_SYMBOL (AcpiSubsystemStatus)
492 /*******************************************************************************
494 * FUNCTION: AcpiGetSystemInfo
496 * PARAMETERS: OutBuffer - A buffer to receive the resources for the
499 * RETURN: Status - the status of the call
501 * DESCRIPTION: This function is called to get information about the current
502 * state of the ACPI subsystem. It will return system information
505 * If the function fails an appropriate status will be returned
506 * and the value of OutBuffer is undefined.
508 ******************************************************************************/
512 ACPI_BUFFER *OutBuffer)
514 ACPI_SYSTEM_INFO *InfoPtr;
518 ACPI_FUNCTION_TRACE (AcpiGetSystemInfo);
521 /* Parameter validation */
523 Status = AcpiUtValidateBuffer (OutBuffer);
524 if (ACPI_FAILURE (Status))
526 return_ACPI_STATUS (Status);
529 /* Validate/Allocate/Clear caller buffer */
531 Status = AcpiUtInitializeBuffer (OutBuffer, sizeof (ACPI_SYSTEM_INFO));
532 if (ACPI_FAILURE (Status))
534 return_ACPI_STATUS (Status);
538 * Populate the return buffer
540 InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer;
542 InfoPtr->AcpiCaVersion = ACPI_CA_VERSION;
544 /* System flags (ACPI capabilities) */
546 InfoPtr->Flags = ACPI_SYS_MODE_ACPI;
548 /* Timer resolution - 24 or 32 bits */
550 if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
552 InfoPtr->TimerResolution = 24;
556 InfoPtr->TimerResolution = 32;
559 /* Clear the reserved fields */
561 InfoPtr->Reserved1 = 0;
562 InfoPtr->Reserved2 = 0;
564 /* Current debug levels */
566 InfoPtr->DebugLayer = AcpiDbgLayer;
567 InfoPtr->DebugLevel = AcpiDbgLevel;
569 return_ACPI_STATUS (AE_OK);
572 ACPI_EXPORT_SYMBOL (AcpiGetSystemInfo)
575 /*****************************************************************************
577 * FUNCTION: AcpiInstallInitializationHandler
579 * PARAMETERS: Handler - Callback procedure
580 * Function - Not (currently) used, see below
584 * DESCRIPTION: Install an initialization handler
586 * TBD: When a second function is added, must save the Function also.
588 ****************************************************************************/
591 AcpiInstallInitializationHandler (
592 ACPI_INIT_HANDLER Handler,
598 return (AE_BAD_PARAMETER);
601 if (AcpiGbl_InitHandler)
603 return (AE_ALREADY_EXISTS);
606 AcpiGbl_InitHandler = Handler;
610 ACPI_EXPORT_SYMBOL (AcpiInstallInitializationHandler)
613 /*****************************************************************************
615 * FUNCTION: AcpiPurgeCachedObjects
621 * DESCRIPTION: Empty all caches (delete the cached objects)
623 ****************************************************************************/
626 AcpiPurgeCachedObjects (
629 ACPI_FUNCTION_TRACE (AcpiPurgeCachedObjects);
631 (void) AcpiOsPurgeCache (AcpiGbl_StateCache);
632 (void) AcpiOsPurgeCache (AcpiGbl_OperandCache);
633 (void) AcpiOsPurgeCache (AcpiGbl_PsNodeCache);
634 (void) AcpiOsPurgeCache (AcpiGbl_PsNodeExtCache);
635 return_ACPI_STATUS (AE_OK);
638 ACPI_EXPORT_SYMBOL (AcpiPurgeCachedObjects)