1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acevents.h"
47
48#define _COMPONENT ACPI_EVENTS
49ACPI_MODULE_NAME("evgpeutil")
50
51#if (!ACPI_REDUCED_HARDWARE)
52
53
54
55
56
57
58
59
60
61
62
63
64acpi_status
65acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context)
66{
67 struct acpi_gpe_block_info *gpe_block;
68 struct acpi_gpe_xrupt_info *gpe_xrupt_info;
69 acpi_status status = AE_OK;
70 acpi_cpu_flags flags;
71
72 ACPI_FUNCTION_TRACE(ev_walk_gpe_list);
73
74 flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
75
76
77
78 gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
79 while (gpe_xrupt_info) {
80
81
82
83 gpe_block = gpe_xrupt_info->gpe_block_list_head;
84 while (gpe_block) {
85
86
87
88 status =
89 gpe_walk_callback(gpe_xrupt_info, gpe_block,
90 context);
91 if (ACPI_FAILURE(status)) {
92 if (status == AE_CTRL_END) {
93 status = AE_OK;
94 }
95 goto unlock_and_exit;
96 }
97
98 gpe_block = gpe_block->next;
99 }
100
101 gpe_xrupt_info = gpe_xrupt_info->next;
102 }
103
104unlock_and_exit:
105 acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
106 return_ACPI_STATUS(status);
107}
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
124{
125 struct acpi_gpe_xrupt_info *gpe_xrupt_block;
126 struct acpi_gpe_block_info *gpe_block;
127
128 ACPI_FUNCTION_ENTRY();
129
130
131
132
133
134 gpe_xrupt_block = acpi_gbl_gpe_xrupt_list_head;
135 while (gpe_xrupt_block) {
136 gpe_block = gpe_xrupt_block->gpe_block_list_head;
137
138
139
140 while (gpe_block) {
141 if ((&gpe_block->event_info[0] <= gpe_event_info) &&
142 (&gpe_block->event_info[gpe_block->gpe_count] >
143 gpe_event_info)) {
144 return (TRUE);
145 }
146
147 gpe_block = gpe_block->next;
148 }
149
150 gpe_xrupt_block = gpe_xrupt_block->next;
151 }
152
153 return (FALSE);
154}
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169acpi_status
170acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
171 struct acpi_gpe_block_info *gpe_block, void *context)
172{
173 struct acpi_gpe_device_info *info = context;
174
175
176
177 info->next_block_base_index += gpe_block->gpe_count;
178
179 if (info->index < info->next_block_base_index) {
180
181
182
183
184 if ((gpe_block->node)->type == ACPI_TYPE_DEVICE) {
185 info->gpe_device = gpe_block->node;
186 }
187
188 info->status = AE_OK;
189 return (AE_CTRL_END);
190 }
191
192 return (AE_OK);
193}
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number)
211{
212 struct acpi_gpe_xrupt_info *next_gpe_xrupt;
213 struct acpi_gpe_xrupt_info *gpe_xrupt;
214 acpi_status status;
215 acpi_cpu_flags flags;
216
217 ACPI_FUNCTION_TRACE(ev_get_gpe_xrupt_block);
218
219
220
221 next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
222 while (next_gpe_xrupt) {
223 if (next_gpe_xrupt->interrupt_number == interrupt_number) {
224 return_PTR(next_gpe_xrupt);
225 }
226
227 next_gpe_xrupt = next_gpe_xrupt->next;
228 }
229
230
231
232 gpe_xrupt = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_xrupt_info));
233 if (!gpe_xrupt) {
234 return_PTR(NULL);
235 }
236
237 gpe_xrupt->interrupt_number = interrupt_number;
238
239
240
241 flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
242 if (acpi_gbl_gpe_xrupt_list_head) {
243 next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
244 while (next_gpe_xrupt->next) {
245 next_gpe_xrupt = next_gpe_xrupt->next;
246 }
247
248 next_gpe_xrupt->next = gpe_xrupt;
249 gpe_xrupt->previous = next_gpe_xrupt;
250 } else {
251 acpi_gbl_gpe_xrupt_list_head = gpe_xrupt;
252 }
253 acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
254
255
256
257 if (interrupt_number != acpi_gbl_FADT.sci_interrupt) {
258 status = acpi_os_install_interrupt_handler(interrupt_number,
259 acpi_ev_gpe_xrupt_handler,
260 gpe_xrupt);
261 if (ACPI_FAILURE(status)) {
262 ACPI_ERROR((AE_INFO,
263 "Could not install GPE interrupt handler at level 0x%X",
264 interrupt_number));
265 return_PTR(NULL);
266 }
267 }
268
269 return_PTR(gpe_xrupt);
270}
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt)
286{
287 acpi_status status;
288 acpi_cpu_flags flags;
289
290 ACPI_FUNCTION_TRACE(ev_delete_gpe_xrupt);
291
292
293
294 if (gpe_xrupt->interrupt_number == acpi_gbl_FADT.sci_interrupt) {
295 gpe_xrupt->gpe_block_list_head = NULL;
296 return_ACPI_STATUS(AE_OK);
297 }
298
299
300
301 status =
302 acpi_os_remove_interrupt_handler(gpe_xrupt->interrupt_number,
303 acpi_ev_gpe_xrupt_handler);
304 if (ACPI_FAILURE(status)) {
305 return_ACPI_STATUS(status);
306 }
307
308
309
310 flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
311 if (gpe_xrupt->previous) {
312 gpe_xrupt->previous->next = gpe_xrupt->next;
313 } else {
314
315
316 acpi_gbl_gpe_xrupt_list_head = gpe_xrupt->next;
317 }
318
319 if (gpe_xrupt->next) {
320 gpe_xrupt->next->previous = gpe_xrupt->previous;
321 }
322 acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
323
324
325
326 ACPI_FREE(gpe_xrupt);
327 return_ACPI_STATUS(AE_OK);
328}
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344acpi_status
345acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
346 struct acpi_gpe_block_info *gpe_block,
347 void *context)
348{
349 struct acpi_gpe_event_info *gpe_event_info;
350 struct acpi_gpe_notify_info *notify;
351 struct acpi_gpe_notify_info *next;
352 u32 i;
353 u32 j;
354
355 ACPI_FUNCTION_TRACE(ev_delete_gpe_handlers);
356
357
358
359 for (i = 0; i < gpe_block->register_count; i++) {
360
361
362
363 for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
364 gpe_event_info = &gpe_block->event_info[((acpi_size) i *
365 ACPI_GPE_REGISTER_WIDTH)
366 + j];
367
368 if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
369 ACPI_GPE_DISPATCH_HANDLER) {
370
371
372
373 ACPI_FREE(gpe_event_info->dispatch.handler);
374 gpe_event_info->dispatch.handler = NULL;
375 gpe_event_info->flags &=
376 ~ACPI_GPE_DISPATCH_MASK;
377 } else
378 if ((gpe_event_info->
379 flags & ACPI_GPE_DISPATCH_MASK) ==
380 ACPI_GPE_DISPATCH_NOTIFY) {
381
382
383
384 notify = gpe_event_info->dispatch.notify_list;
385 while (notify) {
386 next = notify->next;
387 ACPI_FREE(notify);
388 notify = next;
389 }
390 gpe_event_info->dispatch.notify_list = NULL;
391 gpe_event_info->flags &=
392 ~ACPI_GPE_DISPATCH_MASK;
393 }
394 }
395 }
396
397 return_ACPI_STATUS(AE_OK);
398}
399
400#endif
401