1
2
3
4
5
6#define pr_fmt(fmt) "ACPI: " fmt
7
8#include <linux/init.h>
9#include <linux/kernel.h>
10#include <linux/moduleparam.h>
11#include <linux/acpi.h>
12
13#include "internal.h"
14
15#define _COMPONENT ACPI_SYSTEM_COMPONENT
16ACPI_MODULE_NAME("sysfs");
17
18#ifdef CONFIG_ACPI_DEBUG
19
20
21
22
23
24
25
26
27
28
29struct acpi_dlayer {
30 const char *name;
31 unsigned long value;
32};
33struct acpi_dlevel {
34 const char *name;
35 unsigned long value;
36};
37#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
38
39static const struct acpi_dlayer acpi_debug_layers[] = {
40 ACPI_DEBUG_INIT(ACPI_UTILITIES),
41 ACPI_DEBUG_INIT(ACPI_HARDWARE),
42 ACPI_DEBUG_INIT(ACPI_EVENTS),
43 ACPI_DEBUG_INIT(ACPI_TABLES),
44 ACPI_DEBUG_INIT(ACPI_NAMESPACE),
45 ACPI_DEBUG_INIT(ACPI_PARSER),
46 ACPI_DEBUG_INIT(ACPI_DISPATCHER),
47 ACPI_DEBUG_INIT(ACPI_EXECUTER),
48 ACPI_DEBUG_INIT(ACPI_RESOURCES),
49 ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
50 ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
51 ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
52 ACPI_DEBUG_INIT(ACPI_COMPILER),
53 ACPI_DEBUG_INIT(ACPI_TOOLS),
54
55 ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
56 ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
57 ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
58 ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
59 ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
60 ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
61 ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
62 ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
63 ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
64 ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
65 ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
66 ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
67 ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
68 ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
69};
70
71static const struct acpi_dlevel acpi_debug_levels[] = {
72 ACPI_DEBUG_INIT(ACPI_LV_INIT),
73 ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
74 ACPI_DEBUG_INIT(ACPI_LV_INFO),
75 ACPI_DEBUG_INIT(ACPI_LV_REPAIR),
76 ACPI_DEBUG_INIT(ACPI_LV_TRACE_POINT),
77
78 ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
79 ACPI_DEBUG_INIT(ACPI_LV_PARSE),
80 ACPI_DEBUG_INIT(ACPI_LV_LOAD),
81 ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
82 ACPI_DEBUG_INIT(ACPI_LV_EXEC),
83 ACPI_DEBUG_INIT(ACPI_LV_NAMES),
84 ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
85 ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
86 ACPI_DEBUG_INIT(ACPI_LV_TABLES),
87 ACPI_DEBUG_INIT(ACPI_LV_VALUES),
88 ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
89 ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
90 ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
91 ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
92
93 ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
94 ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
95 ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
96
97 ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
98 ACPI_DEBUG_INIT(ACPI_LV_THREADS),
99 ACPI_DEBUG_INIT(ACPI_LV_IO),
100 ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
101
102 ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
103 ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
104 ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
105 ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
106};
107
108static int param_get_debug_layer(char *buffer, const struct kernel_param *kp)
109{
110 int result = 0;
111 int i;
112
113 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
114
115 for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
116 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
117 acpi_debug_layers[i].name,
118 acpi_debug_layers[i].value,
119 (acpi_dbg_layer & acpi_debug_layers[i].value)
120 ? '*' : ' ');
121 }
122 result +=
123 sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
124 ACPI_ALL_DRIVERS,
125 (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
126 ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
127 == 0 ? ' ' : '-');
128 result +=
129 sprintf(buffer + result,
130 "--\ndebug_layer = 0x%08X ( * = enabled)\n",
131 acpi_dbg_layer);
132
133 return result;
134}
135
136static int param_get_debug_level(char *buffer, const struct kernel_param *kp)
137{
138 int result = 0;
139 int i;
140
141 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
142
143 for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
144 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
145 acpi_debug_levels[i].name,
146 acpi_debug_levels[i].value,
147 (acpi_dbg_level & acpi_debug_levels[i].value)
148 ? '*' : ' ');
149 }
150 result +=
151 sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
152 acpi_dbg_level);
153
154 return result;
155}
156
157static const struct kernel_param_ops param_ops_debug_layer = {
158 .set = param_set_uint,
159 .get = param_get_debug_layer,
160};
161
162static const struct kernel_param_ops param_ops_debug_level = {
163 .set = param_set_uint,
164 .get = param_get_debug_level,
165};
166
167module_param_cb(debug_layer, ¶m_ops_debug_layer, &acpi_dbg_layer, 0644);
168module_param_cb(debug_level, ¶m_ops_debug_level, &acpi_dbg_level, 0644);
169
170static char trace_method_name[1024];
171
172static int param_set_trace_method_name(const char *val,
173 const struct kernel_param *kp)
174{
175 u32 saved_flags = 0;
176 bool is_abs_path = true;
177
178 if (*val != '\\')
179 is_abs_path = false;
180
181 if ((is_abs_path && strlen(val) > 1023) ||
182 (!is_abs_path && strlen(val) > 1022)) {
183 pr_err("%s: string parameter too long\n", kp->name);
184 return -ENOSPC;
185 }
186
187
188
189
190
191
192 saved_flags = acpi_gbl_trace_flags;
193 (void)acpi_debug_trace(NULL,
194 acpi_gbl_trace_dbg_level,
195 acpi_gbl_trace_dbg_layer,
196 0);
197
198
199 if (is_abs_path)
200 strcpy(trace_method_name, val);
201 else {
202 trace_method_name[0] = '\\';
203 strcpy(trace_method_name+1, val);
204 }
205
206
207 (void)acpi_debug_trace(trace_method_name,
208 acpi_gbl_trace_dbg_level,
209 acpi_gbl_trace_dbg_layer,
210 saved_flags);
211
212 return 0;
213}
214
215static int param_get_trace_method_name(char *buffer, const struct kernel_param *kp)
216{
217 return scnprintf(buffer, PAGE_SIZE, "%s", acpi_gbl_trace_method_name);
218}
219
220static const struct kernel_param_ops param_ops_trace_method = {
221 .set = param_set_trace_method_name,
222 .get = param_get_trace_method_name,
223};
224
225static const struct kernel_param_ops param_ops_trace_attrib = {
226 .set = param_set_uint,
227 .get = param_get_uint,
228};
229
230module_param_cb(trace_method_name, ¶m_ops_trace_method, &trace_method_name, 0644);
231module_param_cb(trace_debug_layer, ¶m_ops_trace_attrib, &acpi_gbl_trace_dbg_layer, 0644);
232module_param_cb(trace_debug_level, ¶m_ops_trace_attrib, &acpi_gbl_trace_dbg_level, 0644);
233
234static int param_set_trace_state(const char *val,
235 const struct kernel_param *kp)
236{
237 acpi_status status;
238 const char *method = trace_method_name;
239 u32 flags = 0;
240
241
242#define acpi_compare_param(val, key) \
243 strncmp((val), (key), sizeof(key) - 1)
244
245 if (!acpi_compare_param(val, "enable")) {
246 method = NULL;
247 flags = ACPI_TRACE_ENABLED;
248 } else if (!acpi_compare_param(val, "disable"))
249 method = NULL;
250 else if (!acpi_compare_param(val, "method-once"))
251 flags = ACPI_TRACE_ENABLED | ACPI_TRACE_ONESHOT;
252 else if (!acpi_compare_param(val, "method"))
253 flags = ACPI_TRACE_ENABLED;
254 else if (!acpi_compare_param(val, "opcode-once"))
255 flags = ACPI_TRACE_ENABLED | ACPI_TRACE_ONESHOT | ACPI_TRACE_OPCODE;
256 else if (!acpi_compare_param(val, "opcode"))
257 flags = ACPI_TRACE_ENABLED | ACPI_TRACE_OPCODE;
258 else
259 return -EINVAL;
260
261 status = acpi_debug_trace(method,
262 acpi_gbl_trace_dbg_level,
263 acpi_gbl_trace_dbg_layer,
264 flags);
265 if (ACPI_FAILURE(status))
266 return -EBUSY;
267
268 return 0;
269}
270
271static int param_get_trace_state(char *buffer, const struct kernel_param *kp)
272{
273 if (!(acpi_gbl_trace_flags & ACPI_TRACE_ENABLED))
274 return sprintf(buffer, "disable");
275 else {
276 if (acpi_gbl_trace_method_name) {
277 if (acpi_gbl_trace_flags & ACPI_TRACE_ONESHOT)
278 return sprintf(buffer, "method-once");
279 else
280 return sprintf(buffer, "method");
281 } else
282 return sprintf(buffer, "enable");
283 }
284 return 0;
285}
286
287module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
288 NULL, 0644);
289#endif
290
291
292
293
294module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
295 byte, 0644);
296MODULE_PARM_DESC(aml_debug_output,
297 "To enable/disable the ACPI Debug Object output.");
298
299
300static int param_get_acpica_version(char *buffer,
301 const struct kernel_param *kp)
302{
303 int result;
304
305 result = sprintf(buffer, "%x", ACPI_CA_VERSION);
306
307 return result;
308}
309
310module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
311
312
313
314
315
316
317
318
319static LIST_HEAD(acpi_table_attr_list);
320static struct kobject *tables_kobj;
321static struct kobject *tables_data_kobj;
322static struct kobject *dynamic_tables_kobj;
323static struct kobject *hotplug_kobj;
324
325#define ACPI_MAX_TABLE_INSTANCES 999
326#define ACPI_INST_SIZE 4
327
328struct acpi_table_attr {
329 struct bin_attribute attr;
330 char name[ACPI_NAME_SIZE];
331 int instance;
332 char filename[ACPI_NAME_SIZE+ACPI_INST_SIZE];
333 struct list_head node;
334};
335
336struct acpi_data_attr {
337 struct bin_attribute attr;
338 u64 addr;
339};
340
341static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
342 struct bin_attribute *bin_attr, char *buf,
343 loff_t offset, size_t count)
344{
345 struct acpi_table_attr *table_attr =
346 container_of(bin_attr, struct acpi_table_attr, attr);
347 struct acpi_table_header *table_header = NULL;
348 acpi_status status;
349 ssize_t rc;
350
351 status = acpi_get_table(table_attr->name, table_attr->instance,
352 &table_header);
353 if (ACPI_FAILURE(status))
354 return -ENODEV;
355
356 rc = memory_read_from_buffer(buf, count, &offset, table_header,
357 table_header->length);
358 acpi_put_table(table_header);
359 return rc;
360}
361
362static int acpi_table_attr_init(struct kobject *tables_obj,
363 struct acpi_table_attr *table_attr,
364 struct acpi_table_header *table_header)
365{
366 struct acpi_table_header *header = NULL;
367 struct acpi_table_attr *attr = NULL;
368 char instance_str[ACPI_INST_SIZE];
369
370 sysfs_attr_init(&table_attr->attr.attr);
371 ACPI_MOVE_NAME(table_attr->name, table_header->signature);
372
373 list_for_each_entry(attr, &acpi_table_attr_list, node) {
374 if (ACPI_COMPARE_NAME(table_attr->name, attr->name))
375 if (table_attr->instance < attr->instance)
376 table_attr->instance = attr->instance;
377 }
378 table_attr->instance++;
379 if (table_attr->instance > ACPI_MAX_TABLE_INSTANCES) {
380 pr_warn("%4.4s: too many table instances\n",
381 table_attr->name);
382 return -ERANGE;
383 }
384
385 ACPI_MOVE_NAME(table_attr->filename, table_header->signature);
386 table_attr->filename[ACPI_NAME_SIZE] = '\0';
387 if (table_attr->instance > 1 || (table_attr->instance == 1 &&
388 !acpi_get_table
389 (table_header->signature, 2, &header))) {
390 snprintf(instance_str, sizeof(instance_str), "%u",
391 table_attr->instance);
392 strcat(table_attr->filename, instance_str);
393 }
394
395 table_attr->attr.size = table_header->length;
396 table_attr->attr.read = acpi_table_show;
397 table_attr->attr.attr.name = table_attr->filename;
398 table_attr->attr.attr.mode = 0400;
399
400 return sysfs_create_bin_file(tables_obj, &table_attr->attr);
401}
402
403acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context)
404{
405 struct acpi_table_attr *table_attr;
406
407 switch (event) {
408 case ACPI_TABLE_EVENT_INSTALL:
409 table_attr =
410 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
411 if (!table_attr)
412 return AE_NO_MEMORY;
413
414 if (acpi_table_attr_init(dynamic_tables_kobj,
415 table_attr, table)) {
416 kfree(table_attr);
417 return AE_ERROR;
418 }
419 list_add_tail(&table_attr->node, &acpi_table_attr_list);
420 break;
421 case ACPI_TABLE_EVENT_LOAD:
422 case ACPI_TABLE_EVENT_UNLOAD:
423 case ACPI_TABLE_EVENT_UNINSTALL:
424
425
426
427
428
429 break;
430 default:
431 return AE_BAD_PARAMETER;
432 }
433 return AE_OK;
434}
435
436static ssize_t acpi_data_show(struct file *filp, struct kobject *kobj,
437 struct bin_attribute *bin_attr, char *buf,
438 loff_t offset, size_t count)
439{
440 struct acpi_data_attr *data_attr;
441 void __iomem *base;
442 ssize_t rc;
443
444 data_attr = container_of(bin_attr, struct acpi_data_attr, attr);
445
446 base = acpi_os_map_memory(data_attr->addr, data_attr->attr.size);
447 if (!base)
448 return -ENOMEM;
449 rc = memory_read_from_buffer(buf, count, &offset, base,
450 data_attr->attr.size);
451 acpi_os_unmap_memory(base, data_attr->attr.size);
452
453 return rc;
454}
455
456static int acpi_bert_data_init(void *th, struct acpi_data_attr *data_attr)
457{
458 struct acpi_table_bert *bert = th;
459
460 if (bert->header.length < sizeof(struct acpi_table_bert) ||
461 bert->region_length < sizeof(struct acpi_hest_generic_status)) {
462 kfree(data_attr);
463 return -EINVAL;
464 }
465 data_attr->addr = bert->address;
466 data_attr->attr.size = bert->region_length;
467 data_attr->attr.attr.name = "BERT";
468
469 return sysfs_create_bin_file(tables_data_kobj, &data_attr->attr);
470}
471
472static struct acpi_data_obj {
473 char *name;
474 int (*fn)(void *, struct acpi_data_attr *);
475} acpi_data_objs[] = {
476 { ACPI_SIG_BERT, acpi_bert_data_init },
477};
478
479#define NUM_ACPI_DATA_OBJS ARRAY_SIZE(acpi_data_objs)
480
481static int acpi_table_data_init(struct acpi_table_header *th)
482{
483 struct acpi_data_attr *data_attr;
484 int i;
485
486 for (i = 0; i < NUM_ACPI_DATA_OBJS; i++) {
487 if (ACPI_COMPARE_NAME(th->signature, acpi_data_objs[i].name)) {
488 data_attr = kzalloc(sizeof(*data_attr), GFP_KERNEL);
489 if (!data_attr)
490 return -ENOMEM;
491 sysfs_attr_init(&data_attr->attr.attr);
492 data_attr->attr.read = acpi_data_show;
493 data_attr->attr.attr.mode = 0400;
494 return acpi_data_objs[i].fn(th, data_attr);
495 }
496 }
497 return 0;
498}
499
500static int acpi_tables_sysfs_init(void)
501{
502 struct acpi_table_attr *table_attr;
503 struct acpi_table_header *table_header = NULL;
504 int table_index;
505 acpi_status status;
506 int ret;
507
508 tables_kobj = kobject_create_and_add("tables", acpi_kobj);
509 if (!tables_kobj)
510 goto err;
511
512 tables_data_kobj = kobject_create_and_add("data", tables_kobj);
513 if (!tables_data_kobj)
514 goto err_tables_data;
515
516 dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
517 if (!dynamic_tables_kobj)
518 goto err_dynamic_tables;
519
520 for (table_index = 0;; table_index++) {
521 status = acpi_get_table_by_index(table_index, &table_header);
522
523 if (status == AE_BAD_PARAMETER)
524 break;
525
526 if (ACPI_FAILURE(status))
527 continue;
528
529 table_attr = kzalloc(sizeof(*table_attr), GFP_KERNEL);
530 if (!table_attr)
531 return -ENOMEM;
532
533 ret = acpi_table_attr_init(tables_kobj,
534 table_attr, table_header);
535 if (ret) {
536 kfree(table_attr);
537 return ret;
538 }
539 list_add_tail(&table_attr->node, &acpi_table_attr_list);
540 acpi_table_data_init(table_header);
541 }
542
543 kobject_uevent(tables_kobj, KOBJ_ADD);
544 kobject_uevent(tables_data_kobj, KOBJ_ADD);
545 kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
546
547 return 0;
548err_dynamic_tables:
549 kobject_put(tables_data_kobj);
550err_tables_data:
551 kobject_put(tables_kobj);
552err:
553 return -ENOMEM;
554}
555
556
557
558
559
560
561u32 acpi_irq_handled;
562u32 acpi_irq_not_handled;
563
564#define COUNT_GPE 0
565#define COUNT_SCI 1
566#define COUNT_SCI_NOT 2
567#define COUNT_ERROR 3
568#define NUM_COUNTERS_EXTRA 4
569
570struct event_counter {
571 u32 count;
572 u32 flags;
573};
574
575static struct event_counter *all_counters;
576static u32 num_gpes;
577static u32 num_counters;
578static struct attribute **all_attrs;
579static u32 acpi_gpe_count;
580
581static struct attribute_group interrupt_stats_attr_group = {
582 .name = "interrupts",
583};
584
585static struct kobj_attribute *counter_attrs;
586
587static void delete_gpe_attr_array(void)
588{
589 struct event_counter *tmp = all_counters;
590
591 all_counters = NULL;
592 kfree(tmp);
593
594 if (counter_attrs) {
595 int i;
596
597 for (i = 0; i < num_gpes; i++)
598 kfree(counter_attrs[i].attr.name);
599
600 kfree(counter_attrs);
601 }
602 kfree(all_attrs);
603
604 return;
605}
606
607static void gpe_count(u32 gpe_number)
608{
609 acpi_gpe_count++;
610
611 if (!all_counters)
612 return;
613
614 if (gpe_number < num_gpes)
615 all_counters[gpe_number].count++;
616 else
617 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
618 COUNT_ERROR].count++;
619
620 return;
621}
622
623static void fixed_event_count(u32 event_number)
624{
625 if (!all_counters)
626 return;
627
628 if (event_number < ACPI_NUM_FIXED_EVENTS)
629 all_counters[num_gpes + event_number].count++;
630 else
631 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
632 COUNT_ERROR].count++;
633
634 return;
635}
636
637static void acpi_global_event_handler(u32 event_type, acpi_handle device,
638 u32 event_number, void *context)
639{
640 if (event_type == ACPI_EVENT_TYPE_GPE) {
641 gpe_count(event_number);
642 pr_debug("GPE event 0x%02x\n", event_number);
643 } else if (event_type == ACPI_EVENT_TYPE_FIXED) {
644 fixed_event_count(event_number);
645 pr_debug("Fixed event 0x%02x\n", event_number);
646 } else {
647 pr_debug("Other event 0x%02x\n", event_number);
648 }
649}
650
651static int get_status(u32 index, acpi_event_status *status,
652 acpi_handle *handle)
653{
654 int result;
655
656 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
657 return -EINVAL;
658
659 if (index < num_gpes) {
660 result = acpi_get_gpe_device(index, handle);
661 if (result) {
662 ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
663 "Invalid GPE 0x%x", index));
664 return result;
665 }
666 result = acpi_get_gpe_status(*handle, index, status);
667 } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
668 result = acpi_get_event_status(index - num_gpes, status);
669
670 return result;
671}
672
673static ssize_t counter_show(struct kobject *kobj,
674 struct kobj_attribute *attr, char *buf)
675{
676 int index = attr - counter_attrs;
677 int size;
678 acpi_handle handle;
679 acpi_event_status status;
680 int result = 0;
681
682 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
683 acpi_irq_handled;
684 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
685 acpi_irq_not_handled;
686 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
687 acpi_gpe_count;
688 size = sprintf(buf, "%8u", all_counters[index].count);
689
690
691 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
692 goto end;
693
694 result = get_status(index, &status, &handle);
695 if (result)
696 goto end;
697
698 if (status & ACPI_EVENT_FLAG_ENABLE_SET)
699 size += sprintf(buf + size, " EN");
700 else
701 size += sprintf(buf + size, " ");
702 if (status & ACPI_EVENT_FLAG_STATUS_SET)
703 size += sprintf(buf + size, " STS");
704 else
705 size += sprintf(buf + size, " ");
706
707 if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER))
708 size += sprintf(buf + size, " invalid ");
709 else if (status & ACPI_EVENT_FLAG_ENABLED)
710 size += sprintf(buf + size, " enabled ");
711 else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
712 size += sprintf(buf + size, " wake_enabled");
713 else
714 size += sprintf(buf + size, " disabled ");
715 if (status & ACPI_EVENT_FLAG_MASKED)
716 size += sprintf(buf + size, " masked ");
717 else
718 size += sprintf(buf + size, " unmasked");
719
720end:
721 size += sprintf(buf + size, "\n");
722 return result ? result : size;
723}
724
725
726
727
728
729
730static ssize_t counter_set(struct kobject *kobj,
731 struct kobj_attribute *attr, const char *buf,
732 size_t size)
733{
734 int index = attr - counter_attrs;
735 acpi_event_status status;
736 acpi_handle handle;
737 int result = 0;
738 unsigned long tmp;
739
740 if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
741 int i;
742 for (i = 0; i < num_counters; ++i)
743 all_counters[i].count = 0;
744 acpi_gpe_count = 0;
745 acpi_irq_handled = 0;
746 acpi_irq_not_handled = 0;
747 goto end;
748 }
749
750
751 result = get_status(index, &status, &handle);
752 if (result)
753 goto end;
754
755 if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER)) {
756 printk(KERN_WARNING PREFIX
757 "Can not change Invalid GPE/Fixed Event status\n");
758 return -EINVAL;
759 }
760
761 if (index < num_gpes) {
762 if (!strcmp(buf, "disable\n") &&
763 (status & ACPI_EVENT_FLAG_ENABLED))
764 result = acpi_disable_gpe(handle, index);
765 else if (!strcmp(buf, "enable\n") &&
766 !(status & ACPI_EVENT_FLAG_ENABLED))
767 result = acpi_enable_gpe(handle, index);
768 else if (!strcmp(buf, "clear\n") &&
769 (status & ACPI_EVENT_FLAG_STATUS_SET))
770 result = acpi_clear_gpe(handle, index);
771 else if (!strcmp(buf, "mask\n"))
772 result = acpi_mask_gpe(handle, index, TRUE);
773 else if (!strcmp(buf, "unmask\n"))
774 result = acpi_mask_gpe(handle, index, FALSE);
775 else if (!kstrtoul(buf, 0, &tmp))
776 all_counters[index].count = tmp;
777 else
778 result = -EINVAL;
779 } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
780 int event = index - num_gpes;
781 if (!strcmp(buf, "disable\n") &&
782 (status & ACPI_EVENT_FLAG_ENABLE_SET))
783 result = acpi_disable_event(event, ACPI_NOT_ISR);
784 else if (!strcmp(buf, "enable\n") &&
785 !(status & ACPI_EVENT_FLAG_ENABLE_SET))
786 result = acpi_enable_event(event, ACPI_NOT_ISR);
787 else if (!strcmp(buf, "clear\n") &&
788 (status & ACPI_EVENT_FLAG_STATUS_SET))
789 result = acpi_clear_event(event);
790 else if (!kstrtoul(buf, 0, &tmp))
791 all_counters[index].count = tmp;
792 else
793 result = -EINVAL;
794 } else
795 all_counters[index].count = strtoul(buf, NULL, 0);
796
797 if (ACPI_FAILURE(result))
798 result = -EINVAL;
799end:
800 return result ? result : size;
801}
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819#define ACPI_MASKABLE_GPE_MAX 0xFF
820static DECLARE_BITMAP(acpi_masked_gpes_map, ACPI_MASKABLE_GPE_MAX) __initdata;
821
822static int __init acpi_gpe_set_masked_gpes(char *val)
823{
824 u8 gpe;
825
826 if (kstrtou8(val, 0, &gpe) || gpe > ACPI_MASKABLE_GPE_MAX)
827 return -EINVAL;
828 set_bit(gpe, acpi_masked_gpes_map);
829
830 return 1;
831}
832__setup("acpi_mask_gpe=", acpi_gpe_set_masked_gpes);
833
834void __init acpi_gpe_apply_masked_gpes(void)
835{
836 acpi_handle handle;
837 acpi_status status;
838 u8 gpe;
839
840 for_each_set_bit(gpe, acpi_masked_gpes_map, ACPI_MASKABLE_GPE_MAX) {
841 status = acpi_get_gpe_device(gpe, &handle);
842 if (ACPI_SUCCESS(status)) {
843 pr_info("Masking GPE 0x%x.\n", gpe);
844 (void)acpi_mask_gpe(handle, gpe, TRUE);
845 }
846 }
847}
848
849void acpi_irq_stats_init(void)
850{
851 acpi_status status;
852 int i;
853
854 if (all_counters)
855 return;
856
857 num_gpes = acpi_current_gpe_count;
858 num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
859
860 all_attrs = kcalloc(num_counters + 1, sizeof(struct attribute *),
861 GFP_KERNEL);
862 if (all_attrs == NULL)
863 return;
864
865 all_counters = kcalloc(num_counters, sizeof(struct event_counter),
866 GFP_KERNEL);
867 if (all_counters == NULL)
868 goto fail;
869
870 status = acpi_install_global_event_handler(acpi_global_event_handler, NULL);
871 if (ACPI_FAILURE(status))
872 goto fail;
873
874 counter_attrs = kcalloc(num_counters, sizeof(struct kobj_attribute),
875 GFP_KERNEL);
876 if (counter_attrs == NULL)
877 goto fail;
878
879 for (i = 0; i < num_counters; ++i) {
880 char buffer[12];
881 char *name;
882
883 if (i < num_gpes)
884 sprintf(buffer, "gpe%02X", i);
885 else if (i == num_gpes + ACPI_EVENT_PMTIMER)
886 sprintf(buffer, "ff_pmtimer");
887 else if (i == num_gpes + ACPI_EVENT_GLOBAL)
888 sprintf(buffer, "ff_gbl_lock");
889 else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
890 sprintf(buffer, "ff_pwr_btn");
891 else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
892 sprintf(buffer, "ff_slp_btn");
893 else if (i == num_gpes + ACPI_EVENT_RTC)
894 sprintf(buffer, "ff_rt_clk");
895 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
896 sprintf(buffer, "gpe_all");
897 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
898 sprintf(buffer, "sci");
899 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
900 sprintf(buffer, "sci_not");
901 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
902 sprintf(buffer, "error");
903 else
904 sprintf(buffer, "bug%02X", i);
905
906 name = kstrdup(buffer, GFP_KERNEL);
907 if (name == NULL)
908 goto fail;
909
910 sysfs_attr_init(&counter_attrs[i].attr);
911 counter_attrs[i].attr.name = name;
912 counter_attrs[i].attr.mode = 0644;
913 counter_attrs[i].show = counter_show;
914 counter_attrs[i].store = counter_set;
915
916 all_attrs[i] = &counter_attrs[i].attr;
917 }
918
919 interrupt_stats_attr_group.attrs = all_attrs;
920 if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
921 return;
922
923fail:
924 delete_gpe_attr_array();
925 return;
926}
927
928static void __exit interrupt_stats_exit(void)
929{
930 sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
931
932 delete_gpe_attr_array();
933
934 return;
935}
936
937static ssize_t
938acpi_show_profile(struct device *dev, struct device_attribute *attr,
939 char *buf)
940{
941 return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
942}
943
944static const struct device_attribute pm_profile_attr =
945 __ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
946
947static ssize_t hotplug_enabled_show(struct kobject *kobj,
948 struct kobj_attribute *attr, char *buf)
949{
950 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
951
952 return sprintf(buf, "%d\n", hotplug->enabled);
953}
954
955static ssize_t hotplug_enabled_store(struct kobject *kobj,
956 struct kobj_attribute *attr,
957 const char *buf, size_t size)
958{
959 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
960 unsigned int val;
961
962 if (kstrtouint(buf, 10, &val) || val > 1)
963 return -EINVAL;
964
965 acpi_scan_hotplug_enabled(hotplug, val);
966 return size;
967}
968
969static struct kobj_attribute hotplug_enabled_attr =
970 __ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show,
971 hotplug_enabled_store);
972
973static struct attribute *hotplug_profile_attrs[] = {
974 &hotplug_enabled_attr.attr,
975 NULL
976};
977
978static struct kobj_type acpi_hotplug_profile_ktype = {
979 .sysfs_ops = &kobj_sysfs_ops,
980 .default_attrs = hotplug_profile_attrs,
981};
982
983void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
984 const char *name)
985{
986 int error;
987
988 if (!hotplug_kobj)
989 goto err_out;
990
991 error = kobject_init_and_add(&hotplug->kobj,
992 &acpi_hotplug_profile_ktype, hotplug_kobj, "%s", name);
993 if (error)
994 goto err_out;
995
996 kobject_uevent(&hotplug->kobj, KOBJ_ADD);
997 return;
998
999 err_out:
1000 pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
1001}
1002
1003static ssize_t force_remove_show(struct kobject *kobj,
1004 struct kobj_attribute *attr, char *buf)
1005{
1006 return sprintf(buf, "%d\n", 0);
1007}
1008
1009static ssize_t force_remove_store(struct kobject *kobj,
1010 struct kobj_attribute *attr,
1011 const char *buf, size_t size)
1012{
1013 bool val;
1014 int ret;
1015
1016 ret = strtobool(buf, &val);
1017 if (ret < 0)
1018 return ret;
1019
1020 if (val) {
1021 pr_err("Enabling force_remove is not supported anymore. Please report to linux-acpi@vger.kernel.org if you depend on this functionality\n");
1022 return -EINVAL;
1023 }
1024 return size;
1025}
1026
1027static const struct kobj_attribute force_remove_attr =
1028 __ATTR(force_remove, S_IRUGO | S_IWUSR, force_remove_show,
1029 force_remove_store);
1030
1031int __init acpi_sysfs_init(void)
1032{
1033 int result;
1034
1035 result = acpi_tables_sysfs_init();
1036 if (result)
1037 return result;
1038
1039 hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
1040 if (!hotplug_kobj)
1041 return -ENOMEM;
1042
1043 result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
1044 if (result)
1045 return result;
1046
1047 result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
1048 return result;
1049}
1050
