14 * All rights reserved.
15 *
16 * 2. License
17 *
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
21 * property rights.
22 *
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
29 *
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;
38 *
39 * The above copyright and patent license is granted only if the following
40 * conditions are met:
41 *
42 * 3. Conditions
43 *
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.
55 *
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
66 * make.
67 *
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
72 * distribution.
73 *
74 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * Intel Code.
76 *
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.
81 *
82 * 4. Disclaimer and Export Compliance
83 *
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
90 * PARTICULAR PURPOSE.
91 *
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
99 * LIMITED REMEDY.
100 *
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.
115 *
116 *****************************************************************************/
117
118#include "acpi.h"
119#include "acevents.h"
120
121#define _COMPONENT ACPI_HARDWARE
122 ACPI_MODULE_NAME ("hwgpe")
123
124
125/******************************************************************************
126 *
127 * FUNCTION: AcpiHwEnableGpe
128 *
129 * PARAMETERS: GpeNumber - The GPE
130 *
131 * RETURN: None
132 *
133 * DESCRIPTION: Enable a single GPE.
134 *
135 ******************************************************************************/
136
137ACPI_STATUS
138AcpiHwEnableGpe (
139 ACPI_GPE_EVENT_INFO *GpeEventInfo)
140{
141 UINT32 InByte;
142 ACPI_STATUS Status;
143
144
145 ACPI_FUNCTION_ENTRY ();
146
147
148 /*
149 * Read the current value of the register, set the appropriate bit
150 * to enable the GPE, and write out the new register.
151 */
152 Status = AcpiHwLowLevelRead (8, &InByte,
153 &GpeEventInfo->RegisterInfo->EnableAddress);
154 if (ACPI_FAILURE (Status))
155 {
156 return (Status);
157 }
158
159 /* Write with the new GPE bit enabled */
160
161 Status = AcpiHwLowLevelWrite (8, (InByte | GpeEventInfo->BitMask),
162 &GpeEventInfo->RegisterInfo->EnableAddress);
163
164 return (Status);
165}
166
167
168/******************************************************************************
169 *
170 * FUNCTION: AcpiHwEnableGpeForWakeup
171 *
172 * PARAMETERS: GpeNumber - The GPE
173 *
174 * RETURN: None
175 *
176 * DESCRIPTION: Keep track of which GPEs the OS has requested not be
177 * disabled when going to sleep.
178 *
179 ******************************************************************************/
180
181void
182AcpiHwEnableGpeForWakeup (
183 ACPI_GPE_EVENT_INFO *GpeEventInfo)
184{
185 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
186
187
188 ACPI_FUNCTION_ENTRY ();
189
190
191 /* Get the info block for the entire GPE register */
192
193 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
194 if (!GpeRegisterInfo)
195 {
196 return;
197 }
198
199 /*
200 * Set the bit so we will not disable this when sleeping
201 */
202 GpeRegisterInfo->WakeEnable |= GpeEventInfo->BitMask;
203}
204
205
206/******************************************************************************
207 *
208 * FUNCTION: AcpiHwDisableGpe
209 *
210 * PARAMETERS: GpeNumber - The GPE
211 *
212 * RETURN: None
213 *
214 * DESCRIPTION: Disable a single GPE.
215 *
216 ******************************************************************************/
217
218ACPI_STATUS
219AcpiHwDisableGpe (
220 ACPI_GPE_EVENT_INFO *GpeEventInfo)
221{
222 UINT32 InByte;
223 ACPI_STATUS Status;
224 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
225
226
227 ACPI_FUNCTION_ENTRY ();
228
229
230 /* Get the info block for the entire GPE register */
231
232 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
233 if (!GpeRegisterInfo)
234 {
235 return (AE_BAD_PARAMETER);
236 }
237
238 /*
239 * Read the current value of the register, clear the appropriate bit,
240 * and write out the new register value to disable the GPE.
241 */
242 Status = AcpiHwLowLevelRead (8, &InByte,
243 &GpeRegisterInfo->EnableAddress);
244 if (ACPI_FAILURE (Status))
245 {
246 return (Status);
247 }
248
249 /* Write the byte with this GPE bit cleared */
250
251 Status = AcpiHwLowLevelWrite (8, (InByte & ~(GpeEventInfo->BitMask)),
252 &GpeRegisterInfo->EnableAddress);
253 if (ACPI_FAILURE (Status))
254 {
255 return (Status);
256 }
257
258 AcpiHwDisableGpeForWakeup (GpeEventInfo);
259 return (AE_OK);
260}
261
262
263/******************************************************************************
264 *
265 * FUNCTION: AcpiHwDisableGpeForWakeup
266 *
267 * PARAMETERS: GpeNumber - The GPE
268 *
269 * RETURN: None
270 *
271 * DESCRIPTION: Keep track of which GPEs the OS has requested not be
272 * disabled when going to sleep.
273 *
274 ******************************************************************************/
275
276void
277AcpiHwDisableGpeForWakeup (
278 ACPI_GPE_EVENT_INFO *GpeEventInfo)
279{
280 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
281
282
283 ACPI_FUNCTION_ENTRY ();
284
285
286 /* Get the info block for the entire GPE register */
287
288 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
289 if (!GpeRegisterInfo)
290 {
291 return;
292 }
293
294 /*
295 * Clear the bit so we will disable this when sleeping
296 */
297 GpeRegisterInfo->WakeEnable &= ~(GpeEventInfo->BitMask);
298}
299
300
301/******************************************************************************
302 *
303 * FUNCTION: AcpiHwClearGpe
304 *
305 * PARAMETERS: GpeNumber - The GPE
306 *
307 * RETURN: None
308 *
309 * DESCRIPTION: Clear a single GPE.
310 *
311 ******************************************************************************/
312
313ACPI_STATUS
314AcpiHwClearGpe (
315 ACPI_GPE_EVENT_INFO *GpeEventInfo)
316{
317 ACPI_STATUS Status;
318
319
320 ACPI_FUNCTION_ENTRY ();
321
322
323 /*
324 * Write a one to the appropriate bit in the status register to
325 * clear this GPE.
326 */
327 Status = AcpiHwLowLevelWrite (8, GpeEventInfo->BitMask,
328 &GpeEventInfo->RegisterInfo->StatusAddress);
329
330 return (Status);
331}
332
333
334/******************************************************************************
335 *
336 * FUNCTION: AcpiHwGetGpeStatus
337 *
338 * PARAMETERS: GpeNumber - The GPE
339 *
340 * RETURN: None
341 *
342 * DESCRIPTION: Return the status of a single GPE.
343 *
344 ******************************************************************************/
345
346ACPI_STATUS
347AcpiHwGetGpeStatus (
348 ACPI_GPE_EVENT_INFO *GpeEventInfo,
349 ACPI_EVENT_STATUS *EventStatus)
350{
351 UINT32 InByte;
352 UINT8 BitMask;
353 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
354 ACPI_STATUS Status;
355 ACPI_EVENT_STATUS LocalEventStatus = 0;
356
357
358 ACPI_FUNCTION_ENTRY ();
359
360
361 if (!EventStatus)
362 {
363 return (AE_BAD_PARAMETER);
364 }
365
366 /* Get the info block for the entire GPE register */
367
368 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
369
370 /* Get the register bitmask for this GPE */
371
372 BitMask = GpeEventInfo->BitMask;
373
374 /* GPE Enabled? */
375
376 Status = AcpiHwLowLevelRead (8, &InByte, &GpeRegisterInfo->EnableAddress);
377 if (ACPI_FAILURE (Status))
378 {
379 goto UnlockAndExit;
380 }
381
382 if (BitMask & InByte)
383 {
384 LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED;
385 }
386
387 /* GPE Enabled for wake? */
388
389 if (BitMask & GpeRegisterInfo->WakeEnable)
390 {
391 LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED;
392 }
393
394 /* GPE active (set)? */
395
396 Status = AcpiHwLowLevelRead (8, &InByte, &GpeRegisterInfo->StatusAddress);
397 if (ACPI_FAILURE (Status))
398 {
399 goto UnlockAndExit;
400 }
401
402 if (BitMask & InByte)
403 {
404 LocalEventStatus |= ACPI_EVENT_FLAG_SET;
405 }
406
407 /* Set return value */
408
409 (*EventStatus) = LocalEventStatus;
410
411
412UnlockAndExit:
413 return (Status);
414}
415
416
417/******************************************************************************
418 *
419 * FUNCTION: AcpiHwDisableGpeBlock
420 *
421 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
422 * GpeBlock - Gpe Block info
423 *
424 * RETURN: Status
425 *
426 * DESCRIPTION: Disable all GPEs within a GPE block
427 *
428 ******************************************************************************/
429
430ACPI_STATUS
431AcpiHwDisableGpeBlock (
432 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
433 ACPI_GPE_BLOCK_INFO *GpeBlock)
434{
435 UINT32 i;
| 14 * All rights reserved.
15 *
16 * 2. License
17 *
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
21 * property rights.
22 *
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
29 *
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;
38 *
39 * The above copyright and patent license is granted only if the following
40 * conditions are met:
41 *
42 * 3. Conditions
43 *
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.
55 *
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
66 * make.
67 *
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
72 * distribution.
73 *
74 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * Intel Code.
76 *
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.
81 *
82 * 4. Disclaimer and Export Compliance
83 *
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
90 * PARTICULAR PURPOSE.
91 *
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
99 * LIMITED REMEDY.
100 *
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.
115 *
116 *****************************************************************************/
117
118#include "acpi.h"
119#include "acevents.h"
120
121#define _COMPONENT ACPI_HARDWARE
122 ACPI_MODULE_NAME ("hwgpe")
123
124
125/******************************************************************************
126 *
127 * FUNCTION: AcpiHwEnableGpe
128 *
129 * PARAMETERS: GpeNumber - The GPE
130 *
131 * RETURN: None
132 *
133 * DESCRIPTION: Enable a single GPE.
134 *
135 ******************************************************************************/
136
137ACPI_STATUS
138AcpiHwEnableGpe (
139 ACPI_GPE_EVENT_INFO *GpeEventInfo)
140{
141 UINT32 InByte;
142 ACPI_STATUS Status;
143
144
145 ACPI_FUNCTION_ENTRY ();
146
147
148 /*
149 * Read the current value of the register, set the appropriate bit
150 * to enable the GPE, and write out the new register.
151 */
152 Status = AcpiHwLowLevelRead (8, &InByte,
153 &GpeEventInfo->RegisterInfo->EnableAddress);
154 if (ACPI_FAILURE (Status))
155 {
156 return (Status);
157 }
158
159 /* Write with the new GPE bit enabled */
160
161 Status = AcpiHwLowLevelWrite (8, (InByte | GpeEventInfo->BitMask),
162 &GpeEventInfo->RegisterInfo->EnableAddress);
163
164 return (Status);
165}
166
167
168/******************************************************************************
169 *
170 * FUNCTION: AcpiHwEnableGpeForWakeup
171 *
172 * PARAMETERS: GpeNumber - The GPE
173 *
174 * RETURN: None
175 *
176 * DESCRIPTION: Keep track of which GPEs the OS has requested not be
177 * disabled when going to sleep.
178 *
179 ******************************************************************************/
180
181void
182AcpiHwEnableGpeForWakeup (
183 ACPI_GPE_EVENT_INFO *GpeEventInfo)
184{
185 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
186
187
188 ACPI_FUNCTION_ENTRY ();
189
190
191 /* Get the info block for the entire GPE register */
192
193 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
194 if (!GpeRegisterInfo)
195 {
196 return;
197 }
198
199 /*
200 * Set the bit so we will not disable this when sleeping
201 */
202 GpeRegisterInfo->WakeEnable |= GpeEventInfo->BitMask;
203}
204
205
206/******************************************************************************
207 *
208 * FUNCTION: AcpiHwDisableGpe
209 *
210 * PARAMETERS: GpeNumber - The GPE
211 *
212 * RETURN: None
213 *
214 * DESCRIPTION: Disable a single GPE.
215 *
216 ******************************************************************************/
217
218ACPI_STATUS
219AcpiHwDisableGpe (
220 ACPI_GPE_EVENT_INFO *GpeEventInfo)
221{
222 UINT32 InByte;
223 ACPI_STATUS Status;
224 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
225
226
227 ACPI_FUNCTION_ENTRY ();
228
229
230 /* Get the info block for the entire GPE register */
231
232 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
233 if (!GpeRegisterInfo)
234 {
235 return (AE_BAD_PARAMETER);
236 }
237
238 /*
239 * Read the current value of the register, clear the appropriate bit,
240 * and write out the new register value to disable the GPE.
241 */
242 Status = AcpiHwLowLevelRead (8, &InByte,
243 &GpeRegisterInfo->EnableAddress);
244 if (ACPI_FAILURE (Status))
245 {
246 return (Status);
247 }
248
249 /* Write the byte with this GPE bit cleared */
250
251 Status = AcpiHwLowLevelWrite (8, (InByte & ~(GpeEventInfo->BitMask)),
252 &GpeRegisterInfo->EnableAddress);
253 if (ACPI_FAILURE (Status))
254 {
255 return (Status);
256 }
257
258 AcpiHwDisableGpeForWakeup (GpeEventInfo);
259 return (AE_OK);
260}
261
262
263/******************************************************************************
264 *
265 * FUNCTION: AcpiHwDisableGpeForWakeup
266 *
267 * PARAMETERS: GpeNumber - The GPE
268 *
269 * RETURN: None
270 *
271 * DESCRIPTION: Keep track of which GPEs the OS has requested not be
272 * disabled when going to sleep.
273 *
274 ******************************************************************************/
275
276void
277AcpiHwDisableGpeForWakeup (
278 ACPI_GPE_EVENT_INFO *GpeEventInfo)
279{
280 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
281
282
283 ACPI_FUNCTION_ENTRY ();
284
285
286 /* Get the info block for the entire GPE register */
287
288 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
289 if (!GpeRegisterInfo)
290 {
291 return;
292 }
293
294 /*
295 * Clear the bit so we will disable this when sleeping
296 */
297 GpeRegisterInfo->WakeEnable &= ~(GpeEventInfo->BitMask);
298}
299
300
301/******************************************************************************
302 *
303 * FUNCTION: AcpiHwClearGpe
304 *
305 * PARAMETERS: GpeNumber - The GPE
306 *
307 * RETURN: None
308 *
309 * DESCRIPTION: Clear a single GPE.
310 *
311 ******************************************************************************/
312
313ACPI_STATUS
314AcpiHwClearGpe (
315 ACPI_GPE_EVENT_INFO *GpeEventInfo)
316{
317 ACPI_STATUS Status;
318
319
320 ACPI_FUNCTION_ENTRY ();
321
322
323 /*
324 * Write a one to the appropriate bit in the status register to
325 * clear this GPE.
326 */
327 Status = AcpiHwLowLevelWrite (8, GpeEventInfo->BitMask,
328 &GpeEventInfo->RegisterInfo->StatusAddress);
329
330 return (Status);
331}
332
333
334/******************************************************************************
335 *
336 * FUNCTION: AcpiHwGetGpeStatus
337 *
338 * PARAMETERS: GpeNumber - The GPE
339 *
340 * RETURN: None
341 *
342 * DESCRIPTION: Return the status of a single GPE.
343 *
344 ******************************************************************************/
345
346ACPI_STATUS
347AcpiHwGetGpeStatus (
348 ACPI_GPE_EVENT_INFO *GpeEventInfo,
349 ACPI_EVENT_STATUS *EventStatus)
350{
351 UINT32 InByte;
352 UINT8 BitMask;
353 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
354 ACPI_STATUS Status;
355 ACPI_EVENT_STATUS LocalEventStatus = 0;
356
357
358 ACPI_FUNCTION_ENTRY ();
359
360
361 if (!EventStatus)
362 {
363 return (AE_BAD_PARAMETER);
364 }
365
366 /* Get the info block for the entire GPE register */
367
368 GpeRegisterInfo = GpeEventInfo->RegisterInfo;
369
370 /* Get the register bitmask for this GPE */
371
372 BitMask = GpeEventInfo->BitMask;
373
374 /* GPE Enabled? */
375
376 Status = AcpiHwLowLevelRead (8, &InByte, &GpeRegisterInfo->EnableAddress);
377 if (ACPI_FAILURE (Status))
378 {
379 goto UnlockAndExit;
380 }
381
382 if (BitMask & InByte)
383 {
384 LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED;
385 }
386
387 /* GPE Enabled for wake? */
388
389 if (BitMask & GpeRegisterInfo->WakeEnable)
390 {
391 LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED;
392 }
393
394 /* GPE active (set)? */
395
396 Status = AcpiHwLowLevelRead (8, &InByte, &GpeRegisterInfo->StatusAddress);
397 if (ACPI_FAILURE (Status))
398 {
399 goto UnlockAndExit;
400 }
401
402 if (BitMask & InByte)
403 {
404 LocalEventStatus |= ACPI_EVENT_FLAG_SET;
405 }
406
407 /* Set return value */
408
409 (*EventStatus) = LocalEventStatus;
410
411
412UnlockAndExit:
413 return (Status);
414}
415
416
417/******************************************************************************
418 *
419 * FUNCTION: AcpiHwDisableGpeBlock
420 *
421 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
422 * GpeBlock - Gpe Block info
423 *
424 * RETURN: Status
425 *
426 * DESCRIPTION: Disable all GPEs within a GPE block
427 *
428 ******************************************************************************/
429
430ACPI_STATUS
431AcpiHwDisableGpeBlock (
432 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
433 ACPI_GPE_BLOCK_INFO *GpeBlock)
434{
435 UINT32 i;
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