2 /******************************************************************************
4 * Module Name: hwgpe - Low level GPE enable/disable/clear functions
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2010, 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 *****************************************************************************/
117 #include <contrib/dev/acpica/include/acpi.h>
118 #include <contrib/dev/acpica/include/accommon.h>
119 #include <contrib/dev/acpica/include/acevents.h>
121 #define _COMPONENT ACPI_HARDWARE
122 ACPI_MODULE_NAME ("hwgpe")
124 /* Local prototypes */
127 AcpiHwEnableWakeupGpeBlock (
128 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
129 ACPI_GPE_BLOCK_INFO *GpeBlock,
133 /******************************************************************************
135 * FUNCTION: AcpiHwLowDisableGpe
137 * PARAMETERS: GpeEventInfo - Info block for the GPE to be disabled
141 * DESCRIPTION: Disable a single GPE in the enable register.
143 ******************************************************************************/
146 AcpiHwLowDisableGpe (
147 ACPI_GPE_EVENT_INFO *GpeEventInfo)
149 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
154 /* Get the info block for the entire GPE register */
156 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
157 if (!GpeRegisterInfo)
159 return (AE_NOT_EXIST);
162 /* Get current value of the enable register that contains this GPE */
164 Status = AcpiHwRead (&EnableMask, &GpeRegisterInfo->EnableAddress);
165 if (ACPI_FAILURE (Status))
170 /* Clear just the bit that corresponds to this GPE */
172 ACPI_CLEAR_BIT (EnableMask, ((UINT32) 1 <<
173 (GpeEventInfo->GpeNumber - GpeRegisterInfo->BaseGpeNumber)));
176 /* Write the updated enable mask */
178 Status = AcpiHwWrite (EnableMask, &GpeRegisterInfo->EnableAddress);
183 /******************************************************************************
185 * FUNCTION: AcpiHwWriteGpeEnableReg
187 * PARAMETERS: GpeEventInfo - Info block for the GPE to be enabled
191 * DESCRIPTION: Write a GPE enable register. Note: The bit for this GPE must
192 * already be cleared or set in the parent register
195 ******************************************************************************/
198 AcpiHwWriteGpeEnableReg (
199 ACPI_GPE_EVENT_INFO *GpeEventInfo)
201 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
205 ACPI_FUNCTION_ENTRY ();
208 /* Get the info block for the entire GPE register */
210 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
211 if (!GpeRegisterInfo)
213 return (AE_NOT_EXIST);
216 /* Write the entire GPE (runtime) enable register */
218 Status = AcpiHwWrite (GpeRegisterInfo->EnableForRun,
219 &GpeRegisterInfo->EnableAddress);
225 /******************************************************************************
227 * FUNCTION: AcpiHwClearGpe
229 * PARAMETERS: GpeEventInfo - Info block for the GPE to be cleared
233 * DESCRIPTION: Clear the status bit for a single GPE.
235 ******************************************************************************/
239 ACPI_GPE_EVENT_INFO *GpeEventInfo)
245 ACPI_FUNCTION_ENTRY ();
248 RegisterBit = (UINT8) (1 <<
249 (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber));
252 * Write a one to the appropriate bit in the status register to
255 Status = AcpiHwWrite (RegisterBit,
256 &GpeEventInfo->RegisterInfo->StatusAddress);
262 /******************************************************************************
264 * FUNCTION: AcpiHwGetGpeStatus
266 * PARAMETERS: GpeEventInfo - Info block for the GPE to queried
267 * EventStatus - Where the GPE status is returned
271 * DESCRIPTION: Return the status of a single GPE.
273 ******************************************************************************/
277 ACPI_GPE_EVENT_INFO *GpeEventInfo,
278 ACPI_EVENT_STATUS *EventStatus)
282 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
284 ACPI_EVENT_STATUS LocalEventStatus = 0;
287 ACPI_FUNCTION_ENTRY ();
292 return (AE_BAD_PARAMETER);
295 /* Get the info block for the entire GPE register */
297 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
299 /* Get the register bitmask for this GPE */
301 RegisterBit = (UINT8) (1 <<
302 (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber));
304 /* GPE currently enabled? (enabled for runtime?) */
306 if (RegisterBit & GpeRegisterInfo->EnableForRun)
308 LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED;
311 /* GPE enabled for wake? */
313 if (RegisterBit & GpeRegisterInfo->EnableForWake)
315 LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED;
318 /* GPE currently active (status bit == 1)? */
320 Status = AcpiHwRead (&InByte, &GpeRegisterInfo->StatusAddress);
321 if (ACPI_FAILURE (Status))
326 if (RegisterBit & InByte)
328 LocalEventStatus |= ACPI_EVENT_FLAG_SET;
331 /* Set return value */
333 (*EventStatus) = LocalEventStatus;
338 /******************************************************************************
340 * FUNCTION: AcpiHwDisableGpeBlock
342 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
343 * GpeBlock - Gpe Block info
347 * DESCRIPTION: Disable all GPEs within a single GPE block
349 ******************************************************************************/
352 AcpiHwDisableGpeBlock (
353 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
354 ACPI_GPE_BLOCK_INFO *GpeBlock,
361 /* Examine each GPE Register within the block */
363 for (i = 0; i < GpeBlock->RegisterCount; i++)
365 /* Disable all GPEs in this register */
367 Status = AcpiHwWrite (0x00, &GpeBlock->RegisterInfo[i].EnableAddress);
368 if (ACPI_FAILURE (Status))
378 /******************************************************************************
380 * FUNCTION: AcpiHwClearGpeBlock
382 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
383 * GpeBlock - Gpe Block info
387 * DESCRIPTION: Clear status bits for all GPEs within a single GPE block
389 ******************************************************************************/
392 AcpiHwClearGpeBlock (
393 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
394 ACPI_GPE_BLOCK_INFO *GpeBlock,
401 /* Examine each GPE Register within the block */
403 for (i = 0; i < GpeBlock->RegisterCount; i++)
405 /* Clear status on all GPEs in this register */
407 Status = AcpiHwWrite (0xFF, &GpeBlock->RegisterInfo[i].StatusAddress);
408 if (ACPI_FAILURE (Status))
418 /******************************************************************************
420 * FUNCTION: AcpiHwEnableRuntimeGpeBlock
422 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
423 * GpeBlock - Gpe Block info
427 * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
428 * combination wake/run GPEs.
430 ******************************************************************************/
433 AcpiHwEnableRuntimeGpeBlock (
434 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
435 ACPI_GPE_BLOCK_INFO *GpeBlock,
442 /* NOTE: assumes that all GPEs are currently disabled */
444 /* Examine each GPE Register within the block */
446 for (i = 0; i < GpeBlock->RegisterCount; i++)
448 if (!GpeBlock->RegisterInfo[i].EnableForRun)
453 /* Enable all "runtime" GPEs in this register */
455 Status = AcpiHwWrite (GpeBlock->RegisterInfo[i].EnableForRun,
456 &GpeBlock->RegisterInfo[i].EnableAddress);
457 if (ACPI_FAILURE (Status))
467 /******************************************************************************
469 * FUNCTION: AcpiHwEnableWakeupGpeBlock
471 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
472 * GpeBlock - Gpe Block info
476 * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
477 * combination wake/run GPEs.
479 ******************************************************************************/
482 AcpiHwEnableWakeupGpeBlock (
483 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
484 ACPI_GPE_BLOCK_INFO *GpeBlock,
491 /* Examine each GPE Register within the block */
493 for (i = 0; i < GpeBlock->RegisterCount; i++)
495 if (!GpeBlock->RegisterInfo[i].EnableForWake)
500 /* Enable all "wake" GPEs in this register */
502 Status = AcpiHwWrite (GpeBlock->RegisterInfo[i].EnableForWake,
503 &GpeBlock->RegisterInfo[i].EnableAddress);
504 if (ACPI_FAILURE (Status))
514 /******************************************************************************
516 * FUNCTION: AcpiHwDisableAllGpes
522 * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
524 ******************************************************************************/
527 AcpiHwDisableAllGpes (
533 ACPI_FUNCTION_TRACE (HwDisableAllGpes);
536 Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL);
537 Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock, NULL);
538 return_ACPI_STATUS (Status);
542 /******************************************************************************
544 * FUNCTION: AcpiHwEnableAllRuntimeGpes
550 * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
552 ******************************************************************************/
555 AcpiHwEnableAllRuntimeGpes (
561 ACPI_FUNCTION_TRACE (HwEnableAllRuntimeGpes);
564 Status = AcpiEvWalkGpeList (AcpiHwEnableRuntimeGpeBlock, NULL);
565 return_ACPI_STATUS (Status);
569 /******************************************************************************
571 * FUNCTION: AcpiHwEnableAllWakeupGpes
577 * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
579 ******************************************************************************/
582 AcpiHwEnableAllWakeupGpes (
588 ACPI_FUNCTION_TRACE (HwEnableAllWakeupGpes);
591 Status = AcpiEvWalkGpeList (AcpiHwEnableWakeupGpeBlock, NULL);
592 return_ACPI_STATUS (Status);