Loading...
1
2/******************************************************************************
3 *
4 * Module Name: hwgpe - Low level GPE enable/disable/clear functions
5 *
6 *****************************************************************************/
7
8/*
9 * Copyright (C) 2000 - 2011, 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
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}
1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2/******************************************************************************
3 *
4 * Module Name: hwgpe - Low level GPE enable/disable/clear functions
5 *
6 * Copyright (C) 2000 - 2019, Intel Corp.
7 *
8 *****************************************************************************/
9
10#include <acpi/acpi.h>
11#include "accommon.h"
12#include "acevents.h"
13
14#define _COMPONENT ACPI_HARDWARE
15ACPI_MODULE_NAME("hwgpe")
16#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
17/* Local prototypes */
18static acpi_status
19acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
20 struct acpi_gpe_block_info *gpe_block,
21 void *context);
22
23static acpi_status
24acpi_hw_gpe_enable_write(u8 enable_mask,
25 struct acpi_gpe_register_info *gpe_register_info);
26
27/******************************************************************************
28 *
29 * FUNCTION: acpi_hw_get_gpe_register_bit
30 *
31 * PARAMETERS: gpe_event_info - Info block for the GPE
32 *
33 * RETURN: Register mask with a one in the GPE bit position
34 *
35 * DESCRIPTION: Compute the register mask for this GPE. One bit is set in the
36 * correct position for the input GPE.
37 *
38 ******************************************************************************/
39
40u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info)
41{
42
43 return ((u32)1 <<
44 (gpe_event_info->gpe_number -
45 gpe_event_info->register_info->base_gpe_number));
46}
47
48/******************************************************************************
49 *
50 * FUNCTION: acpi_hw_low_set_gpe
51 *
52 * PARAMETERS: gpe_event_info - Info block for the GPE to be disabled
53 * action - Enable or disable
54 *
55 * RETURN: Status
56 *
57 * DESCRIPTION: Enable or disable a single GPE in the parent enable register.
58 * The enable_mask field of the involved GPE register must be
59 * updated by the caller if necessary.
60 *
61 ******************************************************************************/
62
63acpi_status
64acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action)
65{
66 struct acpi_gpe_register_info *gpe_register_info;
67 acpi_status status = AE_OK;
68 u64 enable_mask;
69 u32 register_bit;
70
71 ACPI_FUNCTION_ENTRY();
72
73 /* Get the info block for the entire GPE register */
74
75 gpe_register_info = gpe_event_info->register_info;
76 if (!gpe_register_info) {
77 return (AE_NOT_EXIST);
78 }
79
80 /* Get current value of the enable register that contains this GPE */
81
82 status = acpi_hw_read(&enable_mask, &gpe_register_info->enable_address);
83 if (ACPI_FAILURE(status)) {
84 return (status);
85 }
86
87 /* Set or clear just the bit that corresponds to this GPE */
88
89 register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
90 switch (action) {
91 case ACPI_GPE_CONDITIONAL_ENABLE:
92
93 /* Only enable if the corresponding enable_mask bit is set */
94
95 if (!(register_bit & gpe_register_info->enable_mask)) {
96 return (AE_BAD_PARAMETER);
97 }
98
99 /*lint -fallthrough */
100
101 case ACPI_GPE_ENABLE:
102
103 ACPI_SET_BIT(enable_mask, register_bit);
104 break;
105
106 case ACPI_GPE_DISABLE:
107
108 ACPI_CLEAR_BIT(enable_mask, register_bit);
109 break;
110
111 default:
112
113 ACPI_ERROR((AE_INFO, "Invalid GPE Action, %u", action));
114 return (AE_BAD_PARAMETER);
115 }
116
117 if (!(register_bit & gpe_register_info->mask_for_run)) {
118
119 /* Write the updated enable mask */
120
121 status =
122 acpi_hw_write(enable_mask,
123 &gpe_register_info->enable_address);
124 }
125 return (status);
126}
127
128/******************************************************************************
129 *
130 * FUNCTION: acpi_hw_clear_gpe
131 *
132 * PARAMETERS: gpe_event_info - Info block for the GPE to be cleared
133 *
134 * RETURN: Status
135 *
136 * DESCRIPTION: Clear the status bit for a single GPE.
137 *
138 ******************************************************************************/
139
140acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info *gpe_event_info)
141{
142 struct acpi_gpe_register_info *gpe_register_info;
143 acpi_status status;
144 u32 register_bit;
145
146 ACPI_FUNCTION_ENTRY();
147
148 /* Get the info block for the entire GPE register */
149
150 gpe_register_info = gpe_event_info->register_info;
151 if (!gpe_register_info) {
152 return (AE_NOT_EXIST);
153 }
154
155 /*
156 * Write a one to the appropriate bit in the status register to
157 * clear this GPE.
158 */
159 register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
160
161 status =
162 acpi_hw_write(register_bit, &gpe_register_info->status_address);
163 return (status);
164}
165
166/******************************************************************************
167 *
168 * FUNCTION: acpi_hw_get_gpe_status
169 *
170 * PARAMETERS: gpe_event_info - Info block for the GPE to queried
171 * event_status - Where the GPE status is returned
172 *
173 * RETURN: Status
174 *
175 * DESCRIPTION: Return the status of a single GPE.
176 *
177 ******************************************************************************/
178
179acpi_status
180acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
181 acpi_event_status *event_status)
182{
183 u64 in_byte;
184 u32 register_bit;
185 struct acpi_gpe_register_info *gpe_register_info;
186 acpi_event_status local_event_status = 0;
187 acpi_status status;
188
189 ACPI_FUNCTION_ENTRY();
190
191 if (!event_status) {
192 return (AE_BAD_PARAMETER);
193 }
194
195 /* GPE currently handled? */
196
197 if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
198 ACPI_GPE_DISPATCH_NONE) {
199 local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER;
200 }
201
202 /* Get the info block for the entire GPE register */
203
204 gpe_register_info = gpe_event_info->register_info;
205
206 /* Get the register bitmask for this GPE */
207
208 register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
209
210 /* GPE currently enabled? (enabled for runtime?) */
211
212 if (register_bit & gpe_register_info->enable_for_run) {
213 local_event_status |= ACPI_EVENT_FLAG_ENABLED;
214 }
215
216 /* GPE currently masked? (masked for runtime?) */
217
218 if (register_bit & gpe_register_info->mask_for_run) {
219 local_event_status |= ACPI_EVENT_FLAG_MASKED;
220 }
221
222 /* GPE enabled for wake? */
223
224 if (register_bit & gpe_register_info->enable_for_wake) {
225 local_event_status |= ACPI_EVENT_FLAG_WAKE_ENABLED;
226 }
227
228 /* GPE currently enabled (enable bit == 1)? */
229
230 status = acpi_hw_read(&in_byte, &gpe_register_info->enable_address);
231 if (ACPI_FAILURE(status)) {
232 return (status);
233 }
234
235 if (register_bit & in_byte) {
236 local_event_status |= ACPI_EVENT_FLAG_ENABLE_SET;
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_STATUS_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_gpe_enable_write
259 *
260 * PARAMETERS: enable_mask - Bit mask to write to the GPE register
261 * gpe_register_info - Gpe Register info
262 *
263 * RETURN: Status
264 *
265 * DESCRIPTION: Write the enable mask byte to the given GPE register.
266 *
267 ******************************************************************************/
268
269static acpi_status
270acpi_hw_gpe_enable_write(u8 enable_mask,
271 struct acpi_gpe_register_info *gpe_register_info)
272{
273 acpi_status status;
274
275 gpe_register_info->enable_mask = enable_mask;
276
277 status = acpi_hw_write(enable_mask, &gpe_register_info->enable_address);
278 return (status);
279}
280
281/******************************************************************************
282 *
283 * FUNCTION: acpi_hw_disable_gpe_block
284 *
285 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
286 * gpe_block - Gpe Block info
287 *
288 * RETURN: Status
289 *
290 * DESCRIPTION: Disable all GPEs within a single GPE block
291 *
292 ******************************************************************************/
293
294acpi_status
295acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
296 struct acpi_gpe_block_info *gpe_block, void *context)
297{
298 u32 i;
299 acpi_status status;
300
301 /* Examine each GPE Register within the block */
302
303 for (i = 0; i < gpe_block->register_count; i++) {
304
305 /* Disable all GPEs in this register */
306
307 status =
308 acpi_hw_gpe_enable_write(0x00,
309 &gpe_block->register_info[i]);
310 if (ACPI_FAILURE(status)) {
311 return (status);
312 }
313 }
314
315 return (AE_OK);
316}
317
318/******************************************************************************
319 *
320 * FUNCTION: acpi_hw_clear_gpe_block
321 *
322 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
323 * gpe_block - Gpe Block info
324 *
325 * RETURN: Status
326 *
327 * DESCRIPTION: Clear status bits for all GPEs within a single GPE block
328 *
329 ******************************************************************************/
330
331acpi_status
332acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
333 struct acpi_gpe_block_info *gpe_block, void *context)
334{
335 u32 i;
336 acpi_status status;
337
338 /* Examine each GPE Register within the block */
339
340 for (i = 0; i < gpe_block->register_count; i++) {
341
342 /* Clear status on all GPEs in this register */
343
344 status =
345 acpi_hw_write(0xFF,
346 &gpe_block->register_info[i].status_address);
347 if (ACPI_FAILURE(status)) {
348 return (status);
349 }
350 }
351
352 return (AE_OK);
353}
354
355/******************************************************************************
356 *
357 * FUNCTION: acpi_hw_enable_runtime_gpe_block
358 *
359 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
360 * gpe_block - Gpe Block info
361 *
362 * RETURN: Status
363 *
364 * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
365 * combination wake/run GPEs.
366 *
367 ******************************************************************************/
368
369acpi_status
370acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
371 struct acpi_gpe_block_info *gpe_block,
372 void *context)
373{
374 u32 i;
375 acpi_status status;
376 struct acpi_gpe_register_info *gpe_register_info;
377 u8 enable_mask;
378
379 /* NOTE: assumes that all GPEs are currently disabled */
380
381 /* Examine each GPE Register within the block */
382
383 for (i = 0; i < gpe_block->register_count; i++) {
384 gpe_register_info = &gpe_block->register_info[i];
385 if (!gpe_register_info->enable_for_run) {
386 continue;
387 }
388
389 /* Enable all "runtime" GPEs in this register */
390
391 enable_mask = gpe_register_info->enable_for_run &
392 ~gpe_register_info->mask_for_run;
393 status =
394 acpi_hw_gpe_enable_write(enable_mask, gpe_register_info);
395 if (ACPI_FAILURE(status)) {
396 return (status);
397 }
398 }
399
400 return (AE_OK);
401}
402
403/******************************************************************************
404 *
405 * FUNCTION: acpi_hw_enable_wakeup_gpe_block
406 *
407 * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
408 * gpe_block - Gpe Block info
409 *
410 * RETURN: Status
411 *
412 * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
413 * combination wake/run GPEs.
414 *
415 ******************************************************************************/
416
417static acpi_status
418acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
419 struct acpi_gpe_block_info *gpe_block,
420 void *context)
421{
422 u32 i;
423 acpi_status status;
424 struct acpi_gpe_register_info *gpe_register_info;
425
426 /* Examine each GPE Register within the block */
427
428 for (i = 0; i < gpe_block->register_count; i++) {
429 gpe_register_info = &gpe_block->register_info[i];
430
431 /*
432 * Enable all "wake" GPEs in this register and disable the
433 * remaining ones.
434 */
435
436 status =
437 acpi_hw_gpe_enable_write(gpe_register_info->enable_for_wake,
438 gpe_register_info);
439 if (ACPI_FAILURE(status)) {
440 return (status);
441 }
442 }
443
444 return (AE_OK);
445}
446
447/******************************************************************************
448 *
449 * FUNCTION: acpi_hw_disable_all_gpes
450 *
451 * PARAMETERS: None
452 *
453 * RETURN: Status
454 *
455 * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
456 *
457 ******************************************************************************/
458
459acpi_status acpi_hw_disable_all_gpes(void)
460{
461 acpi_status status;
462
463 ACPI_FUNCTION_TRACE(hw_disable_all_gpes);
464
465 status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
466 return_ACPI_STATUS(status);
467}
468
469/******************************************************************************
470 *
471 * FUNCTION: acpi_hw_enable_all_runtime_gpes
472 *
473 * PARAMETERS: None
474 *
475 * RETURN: Status
476 *
477 * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
478 *
479 ******************************************************************************/
480
481acpi_status acpi_hw_enable_all_runtime_gpes(void)
482{
483 acpi_status status;
484
485 ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes);
486
487 status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block, NULL);
488 return_ACPI_STATUS(status);
489}
490
491/******************************************************************************
492 *
493 * FUNCTION: acpi_hw_enable_all_wakeup_gpes
494 *
495 * PARAMETERS: None
496 *
497 * RETURN: Status
498 *
499 * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
500 *
501 ******************************************************************************/
502
503acpi_status acpi_hw_enable_all_wakeup_gpes(void)
504{
505 acpi_status status;
506
507 ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes);
508
509 status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block, NULL);
510 return_ACPI_STATUS(status);
511}
512
513#endif /* !ACPI_REDUCED_HARDWARE */