1 /******************************************************************************
3 * Module Name: evgpeutil - GPE utilities
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
12 * All rights reserved.
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
37 * The above copyright and patent license is granted only if the following
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
72 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
80 * 4. Disclaimer and Export Compliance
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
114 *****************************************************************************/
118 #include <contrib/dev/acpica/include/acpi.h>
119 #include <contrib/dev/acpica/include/accommon.h>
120 #include <contrib/dev/acpica/include/acevents.h>
122 #define _COMPONENT ACPI_EVENTS
123 ACPI_MODULE_NAME ("evgpeutil")
126 /*******************************************************************************
128 * FUNCTION: AcpiEvWalkGpeList
130 * PARAMETERS: GpeWalkCallback - Routine called for each GPE block
131 * Context - Value passed to callback
135 * DESCRIPTION: Walk the GPE lists.
137 ******************************************************************************/
141 ACPI_GPE_CALLBACK GpeWalkCallback,
144 ACPI_GPE_BLOCK_INFO *GpeBlock;
145 ACPI_GPE_XRUPT_INFO *GpeXruptInfo;
146 ACPI_STATUS Status = AE_OK;
147 ACPI_CPU_FLAGS Flags;
150 ACPI_FUNCTION_TRACE (EvWalkGpeList);
153 Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
155 /* Walk the interrupt level descriptor list */
157 GpeXruptInfo = AcpiGbl_GpeXruptListHead;
160 /* Walk all Gpe Blocks attached to this interrupt level */
162 GpeBlock = GpeXruptInfo->GpeBlockListHead;
165 /* One callback per GPE block */
167 Status = GpeWalkCallback (GpeXruptInfo, GpeBlock, Context);
168 if (ACPI_FAILURE (Status))
170 if (Status == AE_CTRL_END) /* Callback abort */
177 GpeBlock = GpeBlock->Next;
180 GpeXruptInfo = GpeXruptInfo->Next;
184 AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
185 return_ACPI_STATUS (Status);
189 /*******************************************************************************
191 * FUNCTION: AcpiEvValidGpeEvent
193 * PARAMETERS: GpeEventInfo - Info for this GPE
195 * RETURN: TRUE if the GpeEvent is valid
197 * DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL.
198 * Should be called only when the GPE lists are semaphore locked
199 * and not subject to change.
201 ******************************************************************************/
204 AcpiEvValidGpeEvent (
205 ACPI_GPE_EVENT_INFO *GpeEventInfo)
207 ACPI_GPE_XRUPT_INFO *GpeXruptBlock;
208 ACPI_GPE_BLOCK_INFO *GpeBlock;
211 ACPI_FUNCTION_ENTRY ();
214 /* No need for spin lock since we are not changing any list elements */
216 /* Walk the GPE interrupt levels */
218 GpeXruptBlock = AcpiGbl_GpeXruptListHead;
219 while (GpeXruptBlock)
221 GpeBlock = GpeXruptBlock->GpeBlockListHead;
223 /* Walk the GPE blocks on this interrupt level */
227 if ((&GpeBlock->EventInfo[0] <= GpeEventInfo) &&
228 (&GpeBlock->EventInfo[GpeBlock->GpeCount] > GpeEventInfo))
233 GpeBlock = GpeBlock->Next;
236 GpeXruptBlock = GpeXruptBlock->Next;
243 /*******************************************************************************
245 * FUNCTION: AcpiEvGetGpeXruptBlock
247 * PARAMETERS: InterruptNumber - Interrupt for a GPE block
249 * RETURN: A GPE interrupt block
251 * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
252 * block per unique interrupt level used for GPEs. Should be
253 * called only when the GPE lists are semaphore locked and not
256 ******************************************************************************/
258 ACPI_GPE_XRUPT_INFO *
259 AcpiEvGetGpeXruptBlock (
260 UINT32 InterruptNumber)
262 ACPI_GPE_XRUPT_INFO *NextGpeXrupt;
263 ACPI_GPE_XRUPT_INFO *GpeXrupt;
265 ACPI_CPU_FLAGS Flags;
268 ACPI_FUNCTION_TRACE (EvGetGpeXruptBlock);
271 /* No need for lock since we are not changing any list elements here */
273 NextGpeXrupt = AcpiGbl_GpeXruptListHead;
276 if (NextGpeXrupt->InterruptNumber == InterruptNumber)
278 return_PTR (NextGpeXrupt);
281 NextGpeXrupt = NextGpeXrupt->Next;
284 /* Not found, must allocate a new xrupt descriptor */
286 GpeXrupt = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_XRUPT_INFO));
292 GpeXrupt->InterruptNumber = InterruptNumber;
294 /* Install new interrupt descriptor with spin lock */
296 Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
297 if (AcpiGbl_GpeXruptListHead)
299 NextGpeXrupt = AcpiGbl_GpeXruptListHead;
300 while (NextGpeXrupt->Next)
302 NextGpeXrupt = NextGpeXrupt->Next;
305 NextGpeXrupt->Next = GpeXrupt;
306 GpeXrupt->Previous = NextGpeXrupt;
310 AcpiGbl_GpeXruptListHead = GpeXrupt;
312 AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
314 /* Install new interrupt handler if not SCI_INT */
316 if (InterruptNumber != AcpiGbl_FADT.SciInterrupt)
318 Status = AcpiOsInstallInterruptHandler (InterruptNumber,
319 AcpiEvGpeXruptHandler, GpeXrupt);
320 if (ACPI_FAILURE (Status))
322 ACPI_ERROR ((AE_INFO,
323 "Could not install GPE interrupt handler at level 0x%X",
329 return_PTR (GpeXrupt);
333 /*******************************************************************************
335 * FUNCTION: AcpiEvDeleteGpeXrupt
337 * PARAMETERS: GpeXrupt - A GPE interrupt info block
341 * DESCRIPTION: Remove and free a GpeXrupt block. Remove an associated
342 * interrupt handler if not the SCI interrupt.
344 ******************************************************************************/
347 AcpiEvDeleteGpeXrupt (
348 ACPI_GPE_XRUPT_INFO *GpeXrupt)
351 ACPI_CPU_FLAGS Flags;
354 ACPI_FUNCTION_TRACE (EvDeleteGpeXrupt);
357 /* We never want to remove the SCI interrupt handler */
359 if (GpeXrupt->InterruptNumber == AcpiGbl_FADT.SciInterrupt)
361 GpeXrupt->GpeBlockListHead = NULL;
362 return_ACPI_STATUS (AE_OK);
365 /* Disable this interrupt */
367 Status = AcpiOsRemoveInterruptHandler (
368 GpeXrupt->InterruptNumber, AcpiEvGpeXruptHandler);
369 if (ACPI_FAILURE (Status))
371 return_ACPI_STATUS (Status);
374 /* Unlink the interrupt block with lock */
376 Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
377 if (GpeXrupt->Previous)
379 GpeXrupt->Previous->Next = GpeXrupt->Next;
383 /* No previous, update list head */
385 AcpiGbl_GpeXruptListHead = GpeXrupt->Next;
390 GpeXrupt->Next->Previous = GpeXrupt->Previous;
392 AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
396 ACPI_FREE (GpeXrupt);
397 return_ACPI_STATUS (AE_OK);
401 /*******************************************************************************
403 * FUNCTION: AcpiEvDeleteGpeHandlers
405 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
406 * GpeBlock - Gpe Block info
410 * DESCRIPTION: Delete all Handler objects found in the GPE data structs.
411 * Used only prior to termination.
413 ******************************************************************************/
416 AcpiEvDeleteGpeHandlers (
417 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
418 ACPI_GPE_BLOCK_INFO *GpeBlock,
421 ACPI_GPE_EVENT_INFO *GpeEventInfo;
426 ACPI_FUNCTION_TRACE (EvDeleteGpeHandlers);
429 /* Examine each GPE Register within the block */
431 for (i = 0; i < GpeBlock->RegisterCount; i++)
433 /* Now look at the individual GPEs in this byte register */
435 for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
437 GpeEventInfo = &GpeBlock->EventInfo[((ACPI_SIZE) i *
438 ACPI_GPE_REGISTER_WIDTH) + j];
440 if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
441 ACPI_GPE_DISPATCH_HANDLER)
443 ACPI_FREE (GpeEventInfo->Dispatch.Handler);
444 GpeEventInfo->Dispatch.Handler = NULL;
445 GpeEventInfo->Flags &= ~ACPI_GPE_DISPATCH_MASK;
450 return_ACPI_STATUS (AE_OK);