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1
2/******************************************************************************
3 *
4 * Module Name: hwgpe - Low level GPE enable/disable/clear functions
5 *
6 *****************************************************************************/
7
8/*
9 * Copyright (C) 2000 - 2012, Intel Corp.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
30 *
31 * NO WARRANTY
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGES.
43 */
44
45#include <acpi/acpi.h>
46#include "accommon.h"
47#include "acevents.h"
48
49#define _COMPONENT ACPI_HARDWARE
50ACPI_MODULE_NAME("hwgpe")
51#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
52/* Local prototypes */
53static acpi_status
54acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
55 struct acpi_gpe_block_info *gpe_block,
56 void *context);
57
58/******************************************************************************
59 *
60 * FUNCTION: acpi_hw_get_gpe_register_bit
61 *
62 * PARAMETERS: gpe_event_info - Info block for the GPE
63 * gpe_register_info - Info block for the GPE register
64 *
65 * RETURN: Register mask with a one in the GPE bit position
66 *
67 * DESCRIPTION: Compute the register mask for this GPE. One bit is set in the
68 * correct position for the input GPE.
69 *
70 ******************************************************************************/
71
72u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info,
73 struct acpi_gpe_register_info *gpe_register_info)
74{
75 return (u32)1 << (gpe_event_info->gpe_number -
76 gpe_register_info->base_gpe_number);
77}
78
79/******************************************************************************
80 *
81 * FUNCTION: acpi_hw_low_set_gpe
82 *
83 * PARAMETERS: gpe_event_info - Info block for the GPE to be disabled
84 * action - Enable or disable
85 *
86 * RETURN: Status
87 *
88 * DESCRIPTION: Enable or disable a single GPE in the parent enable register.
89 *
90 ******************************************************************************/
91
92acpi_status
93acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action)
94{
95 struct acpi_gpe_register_info *gpe_register_info;
96 acpi_status status;
97 u32 enable_mask;
98 u32 register_bit;
99
100 ACPI_FUNCTION_ENTRY();
101
102 /* Get the info block for the entire GPE register */
103
104 gpe_register_info = gpe_event_info->register_info;
105 if (!gpe_register_info) {
106 return (AE_NOT_EXIST);
107 }
108
109 /* Get current value of the enable register that contains this GPE */
110
111 status = acpi_hw_read(&enable_mask, &gpe_register_info->enable_address);
112 if (ACPI_FAILURE(status)) {
113 return (status);
114 }
115
116 /* Set or clear just the bit that corresponds to this GPE */
117
118 register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info,
119 gpe_register_info);
120 switch (action) {
121 case ACPI_GPE_CONDITIONAL_ENABLE:
122
123 /* Only enable if the enable_for_run bit is set */
124
125 if (!(register_bit & gpe_register_info->enable_for_run)) {
126 return (AE_BAD_PARAMETER);
127 }
128
129 /*lint -fallthrough */
130
131 case ACPI_GPE_ENABLE:
132 ACPI_SET_BIT(enable_mask, register_bit);
133 break;
134
135 case ACPI_GPE_DISABLE:
136 ACPI_CLEAR_BIT(enable_mask, register_bit);
137 break;
138
139 default:
140 ACPI_ERROR((AE_INFO, "Invalid GPE Action, %u\n", action));
141 return (AE_BAD_PARAMETER);
142 }
143
144 /* Write the updated enable mask */
145
146 status = acpi_hw_write(enable_mask, &gpe_register_info->enable_address);
147 return (status);
148}
149
150/******************************************************************************
151 *
152 * FUNCTION: acpi_hw_clear_gpe
153 *
154 * PARAMETERS: gpe_event_info - Info block for the GPE to be cleared
155 *
156 * RETURN: Status
157 *
158 * DESCRIPTION: Clear the status bit for a single GPE.
159 *
160 ******************************************************************************/
161
162acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info)
163{
164 struct acpi_gpe_register_info *gpe_register_info;
165 acpi_status status;
166 u32 register_bit;
167
168 ACPI_FUNCTION_ENTRY();
169
170 /* Get the info block for the entire GPE register */
171
172 gpe_register_info = gpe_event_info->register_info;
173 if (!gpe_register_info) {
174 return (AE_NOT_EXIST);
175 }
176
177 /*
178 * Write a one to the appropriate bit in the status register to
179 * clear this GPE.
180 */
181 register_bit =
182 acpi_hw_get_gpe_register_bit(gpe_event_info, gpe_register_info);
183
184 status = acpi_hw_write(register_bit,
185 &gpe_register_info->status_address);
186
187 return (status);
188}
189
190/******************************************************************************
191 *
192 * FUNCTION: acpi_hw_get_gpe_status
193 *
194 * PARAMETERS: gpe_event_info - Info block for the GPE to queried
195 * event_status - Where the GPE status is returned
196 *
197 * RETURN: Status
198 *
199 * DESCRIPTION: Return the status of a single GPE.
200 *
201 ******************************************************************************/
202
203acpi_status
204acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
205 acpi_event_status * event_status)
206{
207 u32 in_byte;
208 u32 register_bit;
209 struct acpi_gpe_register_info *gpe_register_info;
210 acpi_event_status local_event_status = 0;
211 acpi_status status;
212
213 ACPI_FUNCTION_ENTRY();
214
215 if (!event_status) {
216 return (AE_BAD_PARAMETER);
217 }
218
219 /* Get the info block for the entire GPE register */
220
221 gpe_register_info = gpe_event_info->register_info;
222
223 /* Get the register bitmask for this GPE */
224
225 register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info,
226 gpe_register_info);
227
228 /* GPE currently enabled? (enabled for runtime?) */
229
230 if (register_bit & gpe_register_info->enable_for_run) {
231 local_event_status |= ACPI_EVENT_FLAG_ENABLED;
232 }
233
234 /* GPE enabled for wake? */
235
236 if (register_bit & gpe_register_info->enable_for_wake) {
237 local_event_status |= ACPI_EVENT_FLAG_WAKE_ENABLED;
238 }
239
240 /* GPE currently active (status bit == 1)? */
241
242 status = acpi_hw_read(&in_byte, &gpe_register_info->status_address);
243 if (ACPI_FAILURE(status)) {
244 return (status);
245 }
246
247 if (register_bit & in_byte) {
248 local_event_status |= ACPI_EVENT_FLAG_SET;
249 }
250
251 /* Set return value */
252
253 (*event_status) = local_event_status;
254 return (AE_OK);
255}
256
257/******************************************************************************
258 *
259 * FUNCTION: acpi_hw_disable_gpe_block
260 *
261 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
262 * gpe_block - Gpe Block info
263 *
264 * RETURN: Status
265 *
266 * DESCRIPTION: Disable all GPEs within a single GPE block
267 *
268 ******************************************************************************/
269
270acpi_status
271acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
272 struct acpi_gpe_block_info *gpe_block, void *context)
273{
274 u32 i;
275 acpi_status status;
276
277 /* Examine each GPE Register within the block */
278
279 for (i = 0; i < gpe_block->register_count; i++) {
280
281 /* Disable all GPEs in this register */
282
283 status =
284 acpi_hw_write(0x00,
285 &gpe_block->register_info[i].enable_address);
286 if (ACPI_FAILURE(status)) {
287 return (status);
288 }
289 }
290
291 return (AE_OK);
292}
293
294/******************************************************************************
295 *
296 * FUNCTION: acpi_hw_clear_gpe_block
297 *
298 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
299 * gpe_block - Gpe Block info
300 *
301 * RETURN: Status
302 *
303 * DESCRIPTION: Clear status bits for all GPEs within a single GPE block
304 *
305 ******************************************************************************/
306
307acpi_status
308acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
309 struct acpi_gpe_block_info *gpe_block, void *context)
310{
311 u32 i;
312 acpi_status status;
313
314 /* Examine each GPE Register within the block */
315
316 for (i = 0; i < gpe_block->register_count; i++) {
317
318 /* Clear status on all GPEs in this register */
319
320 status =
321 acpi_hw_write(0xFF,
322 &gpe_block->register_info[i].status_address);
323 if (ACPI_FAILURE(status)) {
324 return (status);
325 }
326 }
327
328 return (AE_OK);
329}
330
331/******************************************************************************
332 *
333 * FUNCTION: acpi_hw_enable_runtime_gpe_block
334 *
335 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
336 * gpe_block - Gpe Block info
337 *
338 * RETURN: Status
339 *
340 * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
341 * combination wake/run GPEs.
342 *
343 ******************************************************************************/
344
345acpi_status
346acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
347 struct acpi_gpe_block_info *gpe_block, void *context)
348{
349 u32 i;
350 acpi_status status;
351
352 /* NOTE: assumes that all GPEs are currently disabled */
353
354 /* Examine each GPE Register within the block */
355
356 for (i = 0; i < gpe_block->register_count; i++) {
357 if (!gpe_block->register_info[i].enable_for_run) {
358 continue;
359 }
360
361 /* Enable all "runtime" GPEs in this register */
362
363 status =
364 acpi_hw_write(gpe_block->register_info[i].enable_for_run,
365 &gpe_block->register_info[i].enable_address);
366 if (ACPI_FAILURE(status)) {
367 return (status);
368 }
369 }
370
371 return (AE_OK);
372}
373
374/******************************************************************************
375 *
376 * FUNCTION: acpi_hw_enable_wakeup_gpe_block
377 *
378 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
379 * gpe_block - Gpe Block info
380 *
381 * RETURN: Status
382 *
383 * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
384 * combination wake/run GPEs.
385 *
386 ******************************************************************************/
387
388static acpi_status
389acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
390 struct acpi_gpe_block_info *gpe_block,
391 void *context)
392{
393 u32 i;
394 acpi_status status;
395
396 /* Examine each GPE Register within the block */
397
398 for (i = 0; i < gpe_block->register_count; i++) {
399 if (!gpe_block->register_info[i].enable_for_wake) {
400 continue;
401 }
402
403 /* Enable all "wake" GPEs in this register */
404
405 status =
406 acpi_hw_write(gpe_block->register_info[i].enable_for_wake,
407 &gpe_block->register_info[i].enable_address);
408 if (ACPI_FAILURE(status)) {
409 return (status);
410 }
411 }
412
413 return (AE_OK);
414}
415
416/******************************************************************************
417 *
418 * FUNCTION: acpi_hw_disable_all_gpes
419 *
420 * PARAMETERS: None
421 *
422 * RETURN: Status
423 *
424 * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
425 *
426 ******************************************************************************/
427
428acpi_status acpi_hw_disable_all_gpes(void)
429{
430 acpi_status status;
431
432 ACPI_FUNCTION_TRACE(hw_disable_all_gpes);
433
434 status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
435 status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block, NULL);
436 return_ACPI_STATUS(status);
437}
438
439/******************************************************************************
440 *
441 * FUNCTION: acpi_hw_enable_all_runtime_gpes
442 *
443 * PARAMETERS: None
444 *
445 * RETURN: Status
446 *
447 * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
448 *
449 ******************************************************************************/
450
451acpi_status acpi_hw_enable_all_runtime_gpes(void)
452{
453 acpi_status status;
454
455 ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes);
456
457 status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block, NULL);
458 return_ACPI_STATUS(status);
459}
460
461/******************************************************************************
462 *
463 * FUNCTION: acpi_hw_enable_all_wakeup_gpes
464 *
465 * PARAMETERS: None
466 *
467 * RETURN: Status
468 *
469 * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
470 *
471 ******************************************************************************/
472
473acpi_status acpi_hw_enable_all_wakeup_gpes(void)
474{
475 acpi_status status;
476
477 ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes);
478
479 status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block, NULL);
480 return_ACPI_STATUS(status);
481}
482
483#endif /* !ACPI_REDUCED_HARDWARE */
1/******************************************************************************
2 *
3 * Module Name: hwgpe - Low level GPE enable/disable/clear functions
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2014, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acevents.h"
47
48#define _COMPONENT ACPI_HARDWARE
49ACPI_MODULE_NAME("hwgpe")
50#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
51/* Local prototypes */
52static acpi_status
53acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
54 struct acpi_gpe_block_info *gpe_block,
55 void *context);
56
57/******************************************************************************
58 *
59 * FUNCTION: acpi_hw_get_gpe_register_bit
60 *
61 * PARAMETERS: gpe_event_info - Info block for the GPE
62 *
63 * RETURN: Register mask with a one in the GPE bit position
64 *
65 * DESCRIPTION: Compute the register mask for this GPE. One bit is set in the
66 * correct position for the input GPE.
67 *
68 ******************************************************************************/
69
70u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info)
71{
72
73 return ((u32)1 <<
74 (gpe_event_info->gpe_number -
75 gpe_event_info->register_info->base_gpe_number));
76}
77
78/******************************************************************************
79 *
80 * FUNCTION: acpi_hw_low_set_gpe
81 *
82 * PARAMETERS: gpe_event_info - Info block for the GPE to be disabled
83 * action - Enable or disable
84 *
85 * RETURN: Status
86 *
87 * DESCRIPTION: Enable or disable a single GPE in the parent enable register.
88 *
89 ******************************************************************************/
90
91acpi_status
92acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action)
93{
94 struct acpi_gpe_register_info *gpe_register_info;
95 acpi_status status;
96 u32 enable_mask;
97 u32 register_bit;
98
99 ACPI_FUNCTION_ENTRY();
100
101 /* Get the info block for the entire GPE register */
102
103 gpe_register_info = gpe_event_info->register_info;
104 if (!gpe_register_info) {
105 return (AE_NOT_EXIST);
106 }
107
108 /* Get current value of the enable register that contains this GPE */
109
110 status = acpi_hw_read(&enable_mask, &gpe_register_info->enable_address);
111 if (ACPI_FAILURE(status)) {
112 return (status);
113 }
114
115 /* Set or clear just the bit that corresponds to this GPE */
116
117 register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
118 switch (action) {
119 case ACPI_GPE_CONDITIONAL_ENABLE:
120
121 /* Only enable if the enable_for_run bit is set */
122
123 if (!(register_bit & gpe_register_info->enable_for_run)) {
124 return (AE_BAD_PARAMETER);
125 }
126
127 /*lint -fallthrough */
128
129 case ACPI_GPE_ENABLE:
130
131 ACPI_SET_BIT(enable_mask, register_bit);
132 break;
133
134 case ACPI_GPE_DISABLE:
135
136 ACPI_CLEAR_BIT(enable_mask, register_bit);
137 break;
138
139 default:
140
141 ACPI_ERROR((AE_INFO, "Invalid GPE Action, %u", action));
142 return (AE_BAD_PARAMETER);
143 }
144
145 /* Write the updated enable mask */
146
147 status = acpi_hw_write(enable_mask, &gpe_register_info->enable_address);
148 return (status);
149}
150
151/******************************************************************************
152 *
153 * FUNCTION: acpi_hw_clear_gpe
154 *
155 * PARAMETERS: gpe_event_info - Info block for the GPE to be cleared
156 *
157 * RETURN: Status
158 *
159 * DESCRIPTION: Clear the status bit for a single GPE.
160 *
161 ******************************************************************************/
162
163acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info)
164{
165 struct acpi_gpe_register_info *gpe_register_info;
166 acpi_status status;
167 u32 register_bit;
168
169 ACPI_FUNCTION_ENTRY();
170
171 /* Get the info block for the entire GPE register */
172
173 gpe_register_info = gpe_event_info->register_info;
174 if (!gpe_register_info) {
175 return (AE_NOT_EXIST);
176 }
177
178 /*
179 * Write a one to the appropriate bit in the status register to
180 * clear this GPE.
181 */
182 register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
183
184 status = acpi_hw_write(register_bit,
185 &gpe_register_info->status_address);
186
187 return (status);
188}
189
190/******************************************************************************
191 *
192 * FUNCTION: acpi_hw_get_gpe_status
193 *
194 * PARAMETERS: gpe_event_info - Info block for the GPE to queried
195 * event_status - Where the GPE status is returned
196 *
197 * RETURN: Status
198 *
199 * DESCRIPTION: Return the status of a single GPE.
200 *
201 ******************************************************************************/
202
203acpi_status
204acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
205 acpi_event_status * event_status)
206{
207 u32 in_byte;
208 u32 register_bit;
209 struct acpi_gpe_register_info *gpe_register_info;
210 acpi_event_status local_event_status = 0;
211 acpi_status status;
212
213 ACPI_FUNCTION_ENTRY();
214
215 if (!event_status) {
216 return (AE_BAD_PARAMETER);
217 }
218
219 /* Get the info block for the entire GPE register */
220
221 gpe_register_info = gpe_event_info->register_info;
222
223 /* Get the register bitmask for this GPE */
224
225 register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
226
227 /* GPE currently enabled? (enabled for runtime?) */
228
229 if (register_bit & gpe_register_info->enable_for_run) {
230 local_event_status |= ACPI_EVENT_FLAG_ENABLED;
231 }
232
233 /* GPE enabled for wake? */
234
235 if (register_bit & gpe_register_info->enable_for_wake) {
236 local_event_status |= ACPI_EVENT_FLAG_WAKE_ENABLED;
237 }
238
239 /* GPE currently active (status bit == 1)? */
240
241 status = acpi_hw_read(&in_byte, &gpe_register_info->status_address);
242 if (ACPI_FAILURE(status)) {
243 return (status);
244 }
245
246 if (register_bit & in_byte) {
247 local_event_status |= ACPI_EVENT_FLAG_SET;
248 }
249
250 /* Set return value */
251
252 (*event_status) = local_event_status;
253 return (AE_OK);
254}
255
256/******************************************************************************
257 *
258 * FUNCTION: acpi_hw_disable_gpe_block
259 *
260 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
261 * gpe_block - Gpe Block info
262 *
263 * RETURN: Status
264 *
265 * DESCRIPTION: Disable all GPEs within a single GPE block
266 *
267 ******************************************************************************/
268
269acpi_status
270acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
271 struct acpi_gpe_block_info *gpe_block, void *context)
272{
273 u32 i;
274 acpi_status status;
275
276 /* Examine each GPE Register within the block */
277
278 for (i = 0; i < gpe_block->register_count; i++) {
279
280 /* Disable all GPEs in this register */
281
282 status =
283 acpi_hw_write(0x00,
284 &gpe_block->register_info[i].enable_address);
285 if (ACPI_FAILURE(status)) {
286 return (status);
287 }
288 }
289
290 return (AE_OK);
291}
292
293/******************************************************************************
294 *
295 * FUNCTION: acpi_hw_clear_gpe_block
296 *
297 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
298 * gpe_block - Gpe Block info
299 *
300 * RETURN: Status
301 *
302 * DESCRIPTION: Clear status bits for all GPEs within a single GPE block
303 *
304 ******************************************************************************/
305
306acpi_status
307acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
308 struct acpi_gpe_block_info *gpe_block, void *context)
309{
310 u32 i;
311 acpi_status status;
312
313 /* Examine each GPE Register within the block */
314
315 for (i = 0; i < gpe_block->register_count; i++) {
316
317 /* Clear status on all GPEs in this register */
318
319 status =
320 acpi_hw_write(0xFF,
321 &gpe_block->register_info[i].status_address);
322 if (ACPI_FAILURE(status)) {
323 return (status);
324 }
325 }
326
327 return (AE_OK);
328}
329
330/******************************************************************************
331 *
332 * FUNCTION: acpi_hw_enable_runtime_gpe_block
333 *
334 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
335 * gpe_block - Gpe Block info
336 *
337 * RETURN: Status
338 *
339 * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
340 * combination wake/run GPEs.
341 *
342 ******************************************************************************/
343
344acpi_status
345acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
346 struct acpi_gpe_block_info * gpe_block,
347 void *context)
348{
349 u32 i;
350 acpi_status status;
351
352 /* NOTE: assumes that all GPEs are currently disabled */
353
354 /* Examine each GPE Register within the block */
355
356 for (i = 0; i < gpe_block->register_count; i++) {
357 if (!gpe_block->register_info[i].enable_for_run) {
358 continue;
359 }
360
361 /* Enable all "runtime" GPEs in this register */
362
363 status =
364 acpi_hw_write(gpe_block->register_info[i].enable_for_run,
365 &gpe_block->register_info[i].enable_address);
366 if (ACPI_FAILURE(status)) {
367 return (status);
368 }
369 }
370
371 return (AE_OK);
372}
373
374/******************************************************************************
375 *
376 * FUNCTION: acpi_hw_enable_wakeup_gpe_block
377 *
378 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
379 * gpe_block - Gpe Block info
380 *
381 * RETURN: Status
382 *
383 * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
384 * combination wake/run GPEs.
385 *
386 ******************************************************************************/
387
388static acpi_status
389acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
390 struct acpi_gpe_block_info *gpe_block,
391 void *context)
392{
393 u32 i;
394 acpi_status status;
395
396 /* Examine each GPE Register within the block */
397
398 for (i = 0; i < gpe_block->register_count; i++) {
399 if (!gpe_block->register_info[i].enable_for_wake) {
400 continue;
401 }
402
403 /* Enable all "wake" GPEs in this register */
404
405 status =
406 acpi_hw_write(gpe_block->register_info[i].enable_for_wake,
407 &gpe_block->register_info[i].enable_address);
408 if (ACPI_FAILURE(status)) {
409 return (status);
410 }
411 }
412
413 return (AE_OK);
414}
415
416/******************************************************************************
417 *
418 * FUNCTION: acpi_hw_disable_all_gpes
419 *
420 * PARAMETERS: None
421 *
422 * RETURN: Status
423 *
424 * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
425 *
426 ******************************************************************************/
427
428acpi_status acpi_hw_disable_all_gpes(void)
429{
430 acpi_status status;
431
432 ACPI_FUNCTION_TRACE(hw_disable_all_gpes);
433
434 status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
435 status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block, NULL);
436 return_ACPI_STATUS(status);
437}
438
439/******************************************************************************
440 *
441 * FUNCTION: acpi_hw_enable_all_runtime_gpes
442 *
443 * PARAMETERS: None
444 *
445 * RETURN: Status
446 *
447 * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
448 *
449 ******************************************************************************/
450
451acpi_status acpi_hw_enable_all_runtime_gpes(void)
452{
453 acpi_status status;
454
455 ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes);
456
457 status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block, NULL);
458 return_ACPI_STATUS(status);
459}
460
461/******************************************************************************
462 *
463 * FUNCTION: acpi_hw_enable_all_wakeup_gpes
464 *
465 * PARAMETERS: None
466 *
467 * RETURN: Status
468 *
469 * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
470 *
471 ******************************************************************************/
472
473acpi_status acpi_hw_enable_all_wakeup_gpes(void)
474{
475 acpi_status status;
476
477 ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes);
478
479 status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block, NULL);
480 return_ACPI_STATUS(status);
481}
482
483#endif /* !ACPI_REDUCED_HARDWARE */