2 /******************************************************************************
4 * Module Name: hwgpe - Low level GPE enable/disable/clear functions
7 *****************************************************************************/
9 /******************************************************************************
13 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
14 * All rights reserved.
18 * 2.1. This is your license from Intel Corp. under its intellectual property
19 * rights. You may have additional license terms from the party that provided
20 * you this software, covering your right to use that party's intellectual
23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
24 * copy of the source code appearing in this file ("Covered Code") an
25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
26 * base code distributed originally by Intel ("Original Intel Code") to copy,
27 * make derivatives, distribute, use and display any portion of the Covered
28 * Code in any form, with the right to sublicense such rights; and
30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
31 * license (with the right to sublicense), under only those claims of Intel
32 * patents that are infringed by the Original Intel Code, to make, use, sell,
33 * offer to sell, and import the Covered Code and derivative works thereof
34 * solely to the minimum extent necessary to exercise the above copyright
35 * license, and in no event shall the patent license extend to any additions
36 * to or modifications of the Original Intel Code. No other license or right
37 * is granted directly or by implication, estoppel or otherwise;
39 * The above copyright and patent license is granted only if the following
44 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
45 * Redistribution of source code of any substantial portion of the Covered
46 * Code or modification with rights to further distribute source must include
47 * the above Copyright Notice, the above License, this list of Conditions,
48 * and the following Disclaimer and Export Compliance provision. In addition,
49 * Licensee must cause all Covered Code to which Licensee contributes to
50 * contain a file documenting the changes Licensee made to create that Covered
51 * Code and the date of any change. Licensee must include in that file the
52 * documentation of any changes made by any predecessor Licensee. Licensee
53 * must include a prominent statement that the modification is derived,
54 * directly or indirectly, from Original Intel Code.
56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
57 * Redistribution of source code of any substantial portion of the Covered
58 * Code or modification without rights to further distribute source must
59 * include the following Disclaimer and Export Compliance provision in the
60 * documentation and/or other materials provided with distribution. In
61 * addition, Licensee may not authorize further sublicense of source of any
62 * portion of the Covered Code, and must include terms to the effect that the
63 * license from Licensee to its licensee is limited to the intellectual
64 * property embodied in the software Licensee provides to its licensee, and
65 * not to intellectual property embodied in modifications its licensee may
68 * 3.3. Redistribution of Executable. Redistribution in executable form of any
69 * substantial portion of the Covered Code or modification must reproduce the
70 * above Copyright Notice, and the following Disclaimer and Export Compliance
71 * provision in the documentation and/or other materials provided with the
74 * 3.4. Intel retains all right, title, and interest in and to the Original
77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
78 * Intel shall be used in advertising or otherwise to promote the sale, use or
79 * other dealings in products derived from or relating to the Covered Code
80 * without prior written authorization from Intel.
82 * 4. Disclaimer and Export Compliance
84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
116 *****************************************************************************/
119 #include "acevents.h"
121 #define _COMPONENT ACPI_HARDWARE
122 ACPI_MODULE_NAME ("hwgpe")
125 /******************************************************************************
127 * FUNCTION: AcpiHwWriteGpeEnableReg
129 * PARAMETERS: GpeEventInfo - Info block for the GPE to be enabled
133 * DESCRIPTION: Write a GPE enable register. Note: The bit for this GPE must
134 * already be cleared or set in the parent register
137 ******************************************************************************/
140 AcpiHwWriteGpeEnableReg (
141 ACPI_GPE_EVENT_INFO *GpeEventInfo)
143 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
147 ACPI_FUNCTION_ENTRY ();
150 /* Get the info block for the entire GPE register */
152 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
153 if (!GpeRegisterInfo)
155 return (AE_NOT_EXIST);
158 /* Write the entire GPE (runtime) enable register */
160 Status = AcpiHwLowLevelWrite (8, GpeRegisterInfo->EnableForRun,
161 &GpeRegisterInfo->EnableAddress);
167 /******************************************************************************
169 * FUNCTION: AcpiHwClearGpe
171 * PARAMETERS: GpeEventInfo - Info block for the GPE to be cleared
175 * DESCRIPTION: Clear the status bit for a single GPE.
177 ******************************************************************************/
181 ACPI_GPE_EVENT_INFO *GpeEventInfo)
186 ACPI_FUNCTION_ENTRY ();
190 * Write a one to the appropriate bit in the status register to
193 Status = AcpiHwLowLevelWrite (8, GpeEventInfo->RegisterBit,
194 &GpeEventInfo->RegisterInfo->StatusAddress);
200 /******************************************************************************
202 * FUNCTION: AcpiHwGetGpeStatus
204 * PARAMETERS: GpeEventInfo - Info block for the GPE to queried
205 * EventStatus - Where the GPE status is returned
209 * DESCRIPTION: Return the status of a single GPE.
211 ******************************************************************************/
215 ACPI_GPE_EVENT_INFO *GpeEventInfo,
216 ACPI_EVENT_STATUS *EventStatus)
220 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
222 ACPI_EVENT_STATUS LocalEventStatus = 0;
225 ACPI_FUNCTION_ENTRY ();
230 return (AE_BAD_PARAMETER);
233 /* Get the info block for the entire GPE register */
235 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
237 /* Get the register bitmask for this GPE */
239 RegisterBit = GpeEventInfo->RegisterBit;
241 /* GPE currently enabled? (enabled for runtime?) */
243 if (RegisterBit & GpeRegisterInfo->EnableForRun)
245 LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED;
248 /* GPE enabled for wake? */
250 if (RegisterBit & GpeRegisterInfo->EnableForWake)
252 LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED;
255 /* GPE currently active (status bit == 1)? */
257 Status = AcpiHwLowLevelRead (8, &InByte, &GpeRegisterInfo->StatusAddress);
258 if (ACPI_FAILURE (Status))
263 if (RegisterBit & InByte)
265 LocalEventStatus |= ACPI_EVENT_FLAG_SET;
268 /* Set return value */
270 (*EventStatus) = LocalEventStatus;
278 /******************************************************************************
280 * FUNCTION: AcpiHwDisableGpeBlock
282 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
283 * GpeBlock - Gpe Block info
287 * DESCRIPTION: Disable all GPEs within a GPE block
289 ******************************************************************************/
292 AcpiHwDisableGpeBlock (
293 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
294 ACPI_GPE_BLOCK_INFO *GpeBlock)
300 /* Examine each GPE Register within the block */
302 for (i = 0; i < GpeBlock->RegisterCount; i++)
304 /* Disable all GPEs in this register */
306 Status = AcpiHwLowLevelWrite (8, 0x00,
307 &GpeBlock->RegisterInfo[i].EnableAddress);
308 if (ACPI_FAILURE (Status))
318 /******************************************************************************
320 * FUNCTION: AcpiHwClearGpeBlock
322 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
323 * GpeBlock - Gpe Block info
327 * DESCRIPTION: Clear status bits for all GPEs within a GPE block
329 ******************************************************************************/
332 AcpiHwClearGpeBlock (
333 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
334 ACPI_GPE_BLOCK_INFO *GpeBlock)
340 /* Examine each GPE Register within the block */
342 for (i = 0; i < GpeBlock->RegisterCount; i++)
344 /* Clear status on all GPEs in this register */
346 Status = AcpiHwLowLevelWrite (8, 0xFF,
347 &GpeBlock->RegisterInfo[i].StatusAddress);
348 if (ACPI_FAILURE (Status))
358 /******************************************************************************
360 * FUNCTION: AcpiHwEnableRuntimeGpeBlock
362 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
363 * GpeBlock - Gpe Block info
367 * DESCRIPTION: Enable all "runtime" GPEs within a GPE block. (Includes
368 * combination wake/run GPEs.)
370 ******************************************************************************/
373 AcpiHwEnableRuntimeGpeBlock (
374 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
375 ACPI_GPE_BLOCK_INFO *GpeBlock)
381 /* NOTE: assumes that all GPEs are currently disabled */
383 /* Examine each GPE Register within the block */
385 for (i = 0; i < GpeBlock->RegisterCount; i++)
387 if (!GpeBlock->RegisterInfo[i].EnableForRun)
392 /* Enable all "runtime" GPEs in this register */
394 Status = AcpiHwLowLevelWrite (8, GpeBlock->RegisterInfo[i].EnableForRun,
395 &GpeBlock->RegisterInfo[i].EnableAddress);
396 if (ACPI_FAILURE (Status))
406 /******************************************************************************
408 * FUNCTION: AcpiHwEnableWakeupGpeBlock
410 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
411 * GpeBlock - Gpe Block info
415 * DESCRIPTION: Enable all "wake" GPEs within a GPE block. (Includes
416 * combination wake/run GPEs.)
418 ******************************************************************************/
421 AcpiHwEnableWakeupGpeBlock (
422 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
423 ACPI_GPE_BLOCK_INFO *GpeBlock)
429 /* Examine each GPE Register within the block */
431 for (i = 0; i < GpeBlock->RegisterCount; i++)
433 if (!GpeBlock->RegisterInfo[i].EnableForWake)
438 /* Enable all "wake" GPEs in this register */
440 Status = AcpiHwLowLevelWrite (8, GpeBlock->RegisterInfo[i].EnableForWake,
441 &GpeBlock->RegisterInfo[i].EnableAddress);
442 if (ACPI_FAILURE (Status))
452 /******************************************************************************
454 * FUNCTION: AcpiHwDisableAllGpes
456 * PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
460 * DESCRIPTION: Disable and clear all GPEs
462 ******************************************************************************/
465 AcpiHwDisableAllGpes (
471 ACPI_FUNCTION_TRACE ("HwDisableAllGpes");
474 Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, Flags);
475 Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock, Flags);
476 return_ACPI_STATUS (Status);
480 /******************************************************************************
482 * FUNCTION: AcpiHwEnableAllRuntimeGpes
484 * PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
488 * DESCRIPTION: Enable all GPEs of the given type
490 ******************************************************************************/
493 AcpiHwEnableAllRuntimeGpes (
499 ACPI_FUNCTION_TRACE ("HwEnableAllRuntimeGpes");
502 Status = AcpiEvWalkGpeList (AcpiHwEnableRuntimeGpeBlock, Flags);
503 return_ACPI_STATUS (Status);
507 /******************************************************************************
509 * FUNCTION: AcpiHwEnableAllWakeupGpes
511 * PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
515 * DESCRIPTION: Enable all GPEs of the given type
517 ******************************************************************************/
520 AcpiHwEnableAllWakeupGpes (
526 ACPI_FUNCTION_TRACE ("HwEnableAllWakeupGpes");
529 Status = AcpiEvWalkGpeList (AcpiHwEnableWakeupGpeBlock, Flags);
530 return_ACPI_STATUS (Status);