1 /******************************************************************************
3 * Module Name: evevent - Fixed Event handling and dispatch
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2003, 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 *****************************************************************************/
116 /* $DragonFly: src/sys/contrib/dev/acpica/Attic/evevent.c,v 1.1 2003/09/24 03:32:15 drhodus Exp $ */
119 #include "acevents.h"
121 #define _COMPONENT ACPI_EVENTS
122 ACPI_MODULE_NAME ("evevent")
125 /*******************************************************************************
127 * FUNCTION: AcpiEvInitialize
133 * DESCRIPTION: Initialize global data structures for events.
135 ******************************************************************************/
144 ACPI_FUNCTION_TRACE ("EvInitialize");
147 /* Make sure we have ACPI tables */
151 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No ACPI tables present!\n"));
152 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
156 * Initialize the Fixed and General Purpose AcpiEvents prior. This is
157 * done prior to enabling SCIs to prevent interrupts from occurring
158 * before handers are installed.
160 Status = AcpiEvFixedEventInitialize ();
161 if (ACPI_FAILURE (Status))
164 "Unable to initialize fixed events, %s\n",
165 AcpiFormatException (Status)));
166 return_ACPI_STATUS (Status);
169 Status = AcpiEvGpeInitialize ();
170 if (ACPI_FAILURE (Status))
173 "Unable to initialize general purpose events, %s\n",
174 AcpiFormatException (Status)));
175 return_ACPI_STATUS (Status);
178 return_ACPI_STATUS (Status);
182 /*******************************************************************************
184 * FUNCTION: AcpiEvHandlerInitialize
190 * DESCRIPTION: Install interrupt handlers for the SCI and Global Lock
192 ******************************************************************************/
195 AcpiEvHandlerInitialize (
201 ACPI_FUNCTION_TRACE ("EvHandlerInitialize");
204 /* Install the SCI handler */
206 Status = AcpiEvInstallSciHandler ();
207 if (ACPI_FAILURE (Status))
210 "Unable to install System Control Interrupt Handler, %s\n",
211 AcpiFormatException (Status)));
212 return_ACPI_STATUS (Status);
215 /* Install the handler for the Global Lock */
217 Status = AcpiEvInitGlobalLockHandler ();
218 if (ACPI_FAILURE (Status))
221 "Unable to initialize Global Lock handler, %s\n",
222 AcpiFormatException (Status)));
223 return_ACPI_STATUS (Status);
226 AcpiGbl_EventsInitialized = TRUE;
227 return_ACPI_STATUS (Status);
231 /*******************************************************************************
233 * FUNCTION: AcpiEvFixedEventInitialize
239 * DESCRIPTION: Install the fixed event handlers and enable the fixed events.
241 ******************************************************************************/
244 AcpiEvFixedEventInitialize (
252 * Initialize the structure that keeps track of fixed event handlers
253 * and enable the fixed events.
255 for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
257 AcpiGbl_FixedEventHandlers[i].Handler = NULL;
258 AcpiGbl_FixedEventHandlers[i].Context = NULL;
260 /* Enable the fixed event */
262 if (AcpiGbl_FixedEventInfo[i].EnableRegisterId != 0xFF)
264 Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[i].EnableRegisterId,
266 if (ACPI_FAILURE (Status))
277 /*******************************************************************************
279 * FUNCTION: AcpiEvFixedEventDetect
283 * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
285 * DESCRIPTION: Checks the PM status register for fixed events
287 ******************************************************************************/
290 AcpiEvFixedEventDetect (
293 UINT32 IntStatus = ACPI_INTERRUPT_NOT_HANDLED;
299 ACPI_FUNCTION_NAME ("EvFixedEventDetect");
303 * Read the fixed feature status and enable registers, as all the cases
304 * depend on their values. Ignore errors here.
306 (void) AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_STATUS, &FixedStatus);
307 (void) AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_ENABLE, &FixedEnable);
309 ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS,
310 "Fixed AcpiEvent Block: Enable %08X Status %08X\n",
311 FixedEnable, FixedStatus));
314 * Check for all possible Fixed Events and dispatch those that are active
316 for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
318 /* Both the status and enable bits must be on for this event */
320 if ((FixedStatus & AcpiGbl_FixedEventInfo[i].StatusBitMask) &&
321 (FixedEnable & AcpiGbl_FixedEventInfo[i].EnableBitMask))
323 /* Found an active (signalled) event */
325 IntStatus |= AcpiEvFixedEventDispatch ((UINT32) i);
333 /*******************************************************************************
335 * FUNCTION: AcpiEvFixedEventDispatch
337 * PARAMETERS: Event - Event type
339 * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
341 * DESCRIPTION: Clears the status bit for the requested event, calls the
342 * handler that previously registered for the event.
344 ******************************************************************************/
347 AcpiEvFixedEventDispatch (
352 ACPI_FUNCTION_ENTRY ();
355 /* Clear the status bit */
357 (void) AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
358 1, ACPI_MTX_DO_NOT_LOCK);
361 * Make sure we've got a handler. If not, report an error.
362 * The event is disabled to prevent further interrupts.
364 if (NULL == AcpiGbl_FixedEventHandlers[Event].Handler)
366 (void) AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
367 0, ACPI_MTX_DO_NOT_LOCK);
370 ("EvGpeDispatch: No installed handler for fixed event [%08X]\n",
373 return (ACPI_INTERRUPT_NOT_HANDLED);
376 /* Invoke the Fixed Event handler */
378 return ((AcpiGbl_FixedEventHandlers[Event].Handler)(
379 AcpiGbl_FixedEventHandlers[Event].Context));