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path: root/drivers/acpi/system.c
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-rw-r--r--drivers/acpi/system.c467
1 files changed, 0 insertions, 467 deletions
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 5981bd07e20e..d70481f32c89 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -40,469 +40,6 @@ ACPI_MODULE_NAME("system");
40#define ACPI_SYSTEM_CLASS "system" 40#define ACPI_SYSTEM_CLASS "system"
41#define ACPI_SYSTEM_DEVICE_NAME "System" 41#define ACPI_SYSTEM_DEVICE_NAME "System"
42 42
43u32 acpi_irq_handled;
44u32 acpi_irq_not_handled;
45
46/*
47 * Make ACPICA version work as module param
48 */
49static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
50{
51 int result;
52
53 result = sprintf(buffer, "%x", ACPI_CA_VERSION);
54
55 return result;
56}
57
58module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
59
60/* --------------------------------------------------------------------------
61 FS Interface (/sys)
62 -------------------------------------------------------------------------- */
63static LIST_HEAD(acpi_table_attr_list);
64static struct kobject *tables_kobj;
65static struct kobject *dynamic_tables_kobj;
66
67struct acpi_table_attr {
68 struct bin_attribute attr;
69 char name[8];
70 int instance;
71 struct list_head node;
72};
73
74static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
75 struct bin_attribute *bin_attr, char *buf,
76 loff_t offset, size_t count)
77{
78 struct acpi_table_attr *table_attr =
79 container_of(bin_attr, struct acpi_table_attr, attr);
80 struct acpi_table_header *table_header = NULL;
81 acpi_status status;
82 char name[ACPI_NAME_SIZE];
83
84 if (strncmp(table_attr->name, "NULL", 4))
85 memcpy(name, table_attr->name, ACPI_NAME_SIZE);
86 else
87 memcpy(name, "\0\0\0\0", 4);
88
89 status =
90 acpi_get_table(name, table_attr->instance,
91 &table_header);
92 if (ACPI_FAILURE(status))
93 return -ENODEV;
94
95 return memory_read_from_buffer(buf, count, &offset,
96 table_header, table_header->length);
97}
98
99static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
100 struct acpi_table_header *table_header)
101{
102 struct acpi_table_header *header = NULL;
103 struct acpi_table_attr *attr = NULL;
104
105 sysfs_attr_init(&table_attr->attr.attr);
106 if (table_header->signature[0] != '\0')
107 memcpy(table_attr->name, table_header->signature,
108 ACPI_NAME_SIZE);
109 else
110 memcpy(table_attr->name, "NULL", 4);
111
112 list_for_each_entry(attr, &acpi_table_attr_list, node) {
113 if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
114 if (table_attr->instance < attr->instance)
115 table_attr->instance = attr->instance;
116 }
117 table_attr->instance++;
118
119 if (table_attr->instance > 1 || (table_attr->instance == 1 &&
120 !acpi_get_table
121 (table_header->signature, 2, &header)))
122 sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
123 table_attr->instance);
124
125 table_attr->attr.size = 0;
126 table_attr->attr.read = acpi_table_show;
127 table_attr->attr.attr.name = table_attr->name;
128 table_attr->attr.attr.mode = 0400;
129
130 return;
131}
132
133static acpi_status
134acpi_sysfs_table_handler(u32 event, void *table, void *context)
135{
136 struct acpi_table_attr *table_attr;
137
138 switch (event) {
139 case ACPI_TABLE_EVENT_LOAD:
140 table_attr =
141 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
142 if (!table_attr)
143 return AE_NO_MEMORY;
144
145 acpi_table_attr_init(table_attr, table);
146 if (sysfs_create_bin_file(dynamic_tables_kobj,
147 &table_attr->attr)) {
148 kfree(table_attr);
149 return AE_ERROR;
150 } else
151 list_add_tail(&table_attr->node,
152 &acpi_table_attr_list);
153 break;
154 case ACPI_TABLE_EVENT_UNLOAD:
155 /*
156 * we do not need to do anything right now
157 * because the table is not deleted from the
158 * global table list when unloading it.
159 */
160 break;
161 default:
162 return AE_BAD_PARAMETER;
163 }
164 return AE_OK;
165}
166
167static int acpi_system_sysfs_init(void)
168{
169 struct acpi_table_attr *table_attr;
170 struct acpi_table_header *table_header = NULL;
171 int table_index = 0;
172 int result;
173
174 tables_kobj = kobject_create_and_add("tables", acpi_kobj);
175 if (!tables_kobj)
176 goto err;
177
178 dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
179 if (!dynamic_tables_kobj)
180 goto err_dynamic_tables;
181
182 do {
183 result = acpi_get_table_by_index(table_index, &table_header);
184 if (!result) {
185 table_index++;
186 table_attr = NULL;
187 table_attr =
188 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
189 if (!table_attr)
190 return -ENOMEM;
191
192 acpi_table_attr_init(table_attr, table_header);
193 result =
194 sysfs_create_bin_file(tables_kobj,
195 &table_attr->attr);
196 if (result) {
197 kfree(table_attr);
198 return result;
199 } else
200 list_add_tail(&table_attr->node,
201 &acpi_table_attr_list);
202 }
203 } while (!result);
204 kobject_uevent(tables_kobj, KOBJ_ADD);
205 kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
206 result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
207
208 return result == AE_OK ? 0 : -EINVAL;
209err_dynamic_tables:
210 kobject_put(tables_kobj);
211err:
212 return -ENOMEM;
213}
214
215/*
216 * Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/
217 * See Documentation/ABI/testing/sysfs-firmware-acpi
218 */
219
220#define COUNT_GPE 0
221#define COUNT_SCI 1 /* acpi_irq_handled */
222#define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
223#define COUNT_ERROR 3 /* other */
224#define NUM_COUNTERS_EXTRA 4
225
226struct event_counter {
227 u32 count;
228 u32 flags;
229};
230
231static struct event_counter *all_counters;
232static u32 num_gpes;
233static u32 num_counters;
234static struct attribute **all_attrs;
235static u32 acpi_gpe_count;
236
237static struct attribute_group interrupt_stats_attr_group = {
238 .name = "interrupts",
239};
240static struct kobj_attribute *counter_attrs;
241
242static void delete_gpe_attr_array(void)
243{
244 struct event_counter *tmp = all_counters;
245
246 all_counters = NULL;
247 kfree(tmp);
248
249 if (counter_attrs) {
250 int i;
251
252 for (i = 0; i < num_gpes; i++)
253 kfree(counter_attrs[i].attr.name);
254
255 kfree(counter_attrs);
256 }
257 kfree(all_attrs);
258
259 return;
260}
261
262void acpi_os_gpe_count(u32 gpe_number)
263{
264 acpi_gpe_count++;
265
266 if (!all_counters)
267 return;
268
269 if (gpe_number < num_gpes)
270 all_counters[gpe_number].count++;
271 else
272 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR].
273 count++;
274
275 return;
276}
277
278void acpi_os_fixed_event_count(u32 event_number)
279{
280 if (!all_counters)
281 return;
282
283 if (event_number < ACPI_NUM_FIXED_EVENTS)
284 all_counters[num_gpes + event_number].count++;
285 else
286 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR].
287 count++;
288
289 return;
290}
291
292static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
293{
294 int result = 0;
295
296 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
297 goto end;
298
299 if (index < num_gpes) {
300 result = acpi_get_gpe_device(index, handle);
301 if (result) {
302 ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
303 "Invalid GPE 0x%x\n", index));
304 goto end;
305 }
306 result = acpi_get_gpe_status(*handle, index, status);
307 } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
308 result = acpi_get_event_status(index - num_gpes, status);
309
310end:
311 return result;
312}
313
314static ssize_t counter_show(struct kobject *kobj,
315 struct kobj_attribute *attr, char *buf)
316{
317 int index = attr - counter_attrs;
318 int size;
319 acpi_handle handle;
320 acpi_event_status status;
321 int result = 0;
322
323 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
324 acpi_irq_handled;
325 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
326 acpi_irq_not_handled;
327 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
328 acpi_gpe_count;
329
330 size = sprintf(buf, "%8d", all_counters[index].count);
331
332 /* "gpe_all" or "sci" */
333 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
334 goto end;
335
336 result = get_status(index, &status, &handle);
337 if (result)
338 goto end;
339
340 if (!(status & ACPI_EVENT_FLAG_HANDLE))
341 size += sprintf(buf + size, " invalid");
342 else if (status & ACPI_EVENT_FLAG_ENABLED)
343 size += sprintf(buf + size, " enabled");
344 else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
345 size += sprintf(buf + size, " wake_enabled");
346 else
347 size += sprintf(buf + size, " disabled");
348
349end:
350 size += sprintf(buf + size, "\n");
351 return result ? result : size;
352}
353
354/*
355 * counter_set() sets the specified counter.
356 * setting the total "sci" file to any value clears all counters.
357 * enable/disable/clear a gpe/fixed event in user space.
358 */
359static ssize_t counter_set(struct kobject *kobj,
360 struct kobj_attribute *attr, const char *buf, size_t size)
361{
362 int index = attr - counter_attrs;
363 acpi_event_status status;
364 acpi_handle handle;
365 int result = 0;
366
367 if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
368 int i;
369 for (i = 0; i < num_counters; ++i)
370 all_counters[i].count = 0;
371 acpi_gpe_count = 0;
372 acpi_irq_handled = 0;
373 acpi_irq_not_handled = 0;
374 goto end;
375 }
376
377 /* show the event status for both GPEs and Fixed Events */
378 result = get_status(index, &status, &handle);
379 if (result)
380 goto end;
381
382 if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
383 printk(KERN_WARNING PREFIX
384 "Can not change Invalid GPE/Fixed Event status\n");
385 return -EINVAL;
386 }
387
388 if (index < num_gpes) {
389 if (!strcmp(buf, "disable\n") &&
390 (status & ACPI_EVENT_FLAG_ENABLED))
391 result = acpi_disable_gpe(handle, index);
392 else if (!strcmp(buf, "enable\n") &&
393 !(status & ACPI_EVENT_FLAG_ENABLED))
394 result = acpi_enable_gpe(handle, index);
395 else if (!strcmp(buf, "clear\n") &&
396 (status & ACPI_EVENT_FLAG_SET))
397 result = acpi_clear_gpe(handle, index);
398 else
399 all_counters[index].count = strtoul(buf, NULL, 0);
400 } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
401 int event = index - num_gpes;
402 if (!strcmp(buf, "disable\n") &&
403 (status & ACPI_EVENT_FLAG_ENABLED))
404 result = acpi_disable_event(event, ACPI_NOT_ISR);
405 else if (!strcmp(buf, "enable\n") &&
406 !(status & ACPI_EVENT_FLAG_ENABLED))
407 result = acpi_enable_event(event, ACPI_NOT_ISR);
408 else if (!strcmp(buf, "clear\n") &&
409 (status & ACPI_EVENT_FLAG_SET))
410 result = acpi_clear_event(event);
411 else
412 all_counters[index].count = strtoul(buf, NULL, 0);
413 } else
414 all_counters[index].count = strtoul(buf, NULL, 0);
415
416 if (ACPI_FAILURE(result))
417 result = -EINVAL;
418end:
419 return result ? result : size;
420}
421
422void acpi_irq_stats_init(void)
423{
424 int i;
425
426 if (all_counters)
427 return;
428
429 num_gpes = acpi_current_gpe_count;
430 num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
431
432 all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
433 GFP_KERNEL);
434 if (all_attrs == NULL)
435 return;
436
437 all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
438 GFP_KERNEL);
439 if (all_counters == NULL)
440 goto fail;
441
442 counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
443 GFP_KERNEL);
444 if (counter_attrs == NULL)
445 goto fail;
446
447 for (i = 0; i < num_counters; ++i) {
448 char buffer[12];
449 char *name;
450
451 if (i < num_gpes)
452 sprintf(buffer, "gpe%02X", i);
453 else if (i == num_gpes + ACPI_EVENT_PMTIMER)
454 sprintf(buffer, "ff_pmtimer");
455 else if (i == num_gpes + ACPI_EVENT_GLOBAL)
456 sprintf(buffer, "ff_gbl_lock");
457 else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
458 sprintf(buffer, "ff_pwr_btn");
459 else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
460 sprintf(buffer, "ff_slp_btn");
461 else if (i == num_gpes + ACPI_EVENT_RTC)
462 sprintf(buffer, "ff_rt_clk");
463 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
464 sprintf(buffer, "gpe_all");
465 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
466 sprintf(buffer, "sci");
467 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
468 sprintf(buffer, "sci_not");
469 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
470 sprintf(buffer, "error");
471 else
472 sprintf(buffer, "bug%02X", i);
473
474 name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
475 if (name == NULL)
476 goto fail;
477 strncpy(name, buffer, strlen(buffer) + 1);
478
479 sysfs_attr_init(&counter_attrs[i].attr);
480 counter_attrs[i].attr.name = name;
481 counter_attrs[i].attr.mode = 0644;
482 counter_attrs[i].show = counter_show;
483 counter_attrs[i].store = counter_set;
484
485 all_attrs[i] = &counter_attrs[i].attr;
486 }
487
488 interrupt_stats_attr_group.attrs = all_attrs;
489 if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
490 return;
491
492fail:
493 delete_gpe_attr_array();
494 return;
495}
496
497static void __exit interrupt_stats_exit(void)
498{
499 sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
500
501 delete_gpe_attr_array();
502
503 return;
504}
505
506/* -------------------------------------------------------------------------- 43/* --------------------------------------------------------------------------
507 FS Interface (/proc) 44 FS Interface (/proc)
508 -------------------------------------------------------------------------- */ 45 -------------------------------------------------------------------------- */
@@ -628,10 +165,6 @@ int __init acpi_system_init(void)
628 int result; 165 int result;
629 166
630 result = acpi_system_procfs_init(); 167 result = acpi_system_procfs_init();
631 if (result)
632 return result;
633
634 result = acpi_system_sysfs_init();
635 168
636 return result; 169 return result;
637} 170}
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-25 01:13:04 -0400