1
2
3
4
5#include <linux/init.h>
6#include <linux/kernel.h>
7#include <linux/moduleparam.h>
8#include <linux/acpi.h>
9
10#include "internal.h"
11
12#define _COMPONENT ACPI_SYSTEM_COMPONENT
13ACPI_MODULE_NAME("sysfs");
14
15#ifdef CONFIG_ACPI_DEBUG
16
17
18
19
20
21
22
23
24
25
26struct acpi_dlayer {
27 const char *name;
28 unsigned long value;
29};
30struct acpi_dlevel {
31 const char *name;
32 unsigned long value;
33};
34#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
35
36static const struct acpi_dlayer acpi_debug_layers[] = {
37 ACPI_DEBUG_INIT(ACPI_UTILITIES),
38 ACPI_DEBUG_INIT(ACPI_HARDWARE),
39 ACPI_DEBUG_INIT(ACPI_EVENTS),
40 ACPI_DEBUG_INIT(ACPI_TABLES),
41 ACPI_DEBUG_INIT(ACPI_NAMESPACE),
42 ACPI_DEBUG_INIT(ACPI_PARSER),
43 ACPI_DEBUG_INIT(ACPI_DISPATCHER),
44 ACPI_DEBUG_INIT(ACPI_EXECUTER),
45 ACPI_DEBUG_INIT(ACPI_RESOURCES),
46 ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
47 ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
48 ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
49 ACPI_DEBUG_INIT(ACPI_COMPILER),
50 ACPI_DEBUG_INIT(ACPI_TOOLS),
51
52 ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
53 ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
54 ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
55 ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
56 ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
57 ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
58 ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
59 ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
60 ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
61 ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
62 ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
63 ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
64 ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
65 ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
66};
67
68static const struct acpi_dlevel acpi_debug_levels[] = {
69 ACPI_DEBUG_INIT(ACPI_LV_INIT),
70 ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
71 ACPI_DEBUG_INIT(ACPI_LV_INFO),
72
73 ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
74 ACPI_DEBUG_INIT(ACPI_LV_PARSE),
75 ACPI_DEBUG_INIT(ACPI_LV_LOAD),
76 ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
77 ACPI_DEBUG_INIT(ACPI_LV_EXEC),
78 ACPI_DEBUG_INIT(ACPI_LV_NAMES),
79 ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
80 ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
81 ACPI_DEBUG_INIT(ACPI_LV_TABLES),
82 ACPI_DEBUG_INIT(ACPI_LV_VALUES),
83 ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
84 ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
85 ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
86 ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
87
88 ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
89 ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
90 ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
91
92 ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
93 ACPI_DEBUG_INIT(ACPI_LV_THREADS),
94 ACPI_DEBUG_INIT(ACPI_LV_IO),
95 ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
96
97 ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
98 ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
99 ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
100 ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
101};
102
103static int param_get_debug_layer(char *buffer, const struct kernel_param *kp)
104{
105 int result = 0;
106 int i;
107
108 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
109
110 for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
111 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
112 acpi_debug_layers[i].name,
113 acpi_debug_layers[i].value,
114 (acpi_dbg_layer & acpi_debug_layers[i].value)
115 ? '*' : ' ');
116 }
117 result +=
118 sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
119 ACPI_ALL_DRIVERS,
120 (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
121 ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
122 == 0 ? ' ' : '-');
123 result +=
124 sprintf(buffer + result,
125 "--\ndebug_layer = 0x%08X ( * = enabled)\n",
126 acpi_dbg_layer);
127
128 return result;
129}
130
131static int param_get_debug_level(char *buffer, const struct kernel_param *kp)
132{
133 int result = 0;
134 int i;
135
136 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
137
138 for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
139 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
140 acpi_debug_levels[i].name,
141 acpi_debug_levels[i].value,
142 (acpi_dbg_level & acpi_debug_levels[i].value)
143 ? '*' : ' ');
144 }
145 result +=
146 sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
147 acpi_dbg_level);
148
149 return result;
150}
151
152static const struct kernel_param_ops param_ops_debug_layer = {
153 .set = param_set_uint,
154 .get = param_get_debug_layer,
155};
156
157static const struct kernel_param_ops param_ops_debug_level = {
158 .set = param_set_uint,
159 .get = param_get_debug_level,
160};
161
162module_param_cb(debug_layer, ¶m_ops_debug_layer, &acpi_dbg_layer, 0644);
163module_param_cb(debug_level, ¶m_ops_debug_level, &acpi_dbg_level, 0644);
164
165static char trace_method_name[6];
166module_param_string(trace_method_name, trace_method_name, 6, 0644);
167static unsigned int trace_debug_layer;
168module_param(trace_debug_layer, uint, 0644);
169static unsigned int trace_debug_level;
170module_param(trace_debug_level, uint, 0644);
171
172static int param_set_trace_state(const char *val, struct kernel_param *kp)
173{
174 int result = 0;
175
176 if (!strncmp(val, "enable", sizeof("enable") - 1)) {
177 result = acpi_debug_trace(trace_method_name, trace_debug_level,
178 trace_debug_layer, 0);
179 if (result)
180 result = -EBUSY;
181 goto exit;
182 }
183
184 if (!strncmp(val, "disable", sizeof("disable") - 1)) {
185 int name = 0;
186 result = acpi_debug_trace((char *)&name, trace_debug_level,
187 trace_debug_layer, 0);
188 if (result)
189 result = -EBUSY;
190 goto exit;
191 }
192
193 if (!strncmp(val, "1", 1)) {
194 result = acpi_debug_trace(trace_method_name, trace_debug_level,
195 trace_debug_layer, 1);
196 if (result)
197 result = -EBUSY;
198 goto exit;
199 }
200
201 result = -EINVAL;
202exit:
203 return result;
204}
205
206static int param_get_trace_state(char *buffer, struct kernel_param *kp)
207{
208 if (!acpi_gbl_trace_method_name)
209 return sprintf(buffer, "disable");
210 else {
211 if (acpi_gbl_trace_flags & 1)
212 return sprintf(buffer, "1");
213 else
214 return sprintf(buffer, "enable");
215 }
216 return 0;
217}
218
219module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
220 NULL, 0644);
221#endif
222
223
224
225
226module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
227 byte, 0644);
228MODULE_PARM_DESC(aml_debug_output,
229 "To enable/disable the ACPI Debug Object output.");
230
231
232static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
233{
234 int result;
235
236 result = sprintf(buffer, "%x", ACPI_CA_VERSION);
237
238 return result;
239}
240
241module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
242
243
244
245
246
247
248
249static LIST_HEAD(acpi_table_attr_list);
250static struct kobject *tables_kobj;
251static struct kobject *dynamic_tables_kobj;
252static struct kobject *hotplug_kobj;
253
254struct acpi_table_attr {
255 struct bin_attribute attr;
256 char name[8];
257 int instance;
258 struct list_head node;
259};
260
261static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
262 struct bin_attribute *bin_attr, char *buf,
263 loff_t offset, size_t count)
264{
265 struct acpi_table_attr *table_attr =
266 container_of(bin_attr, struct acpi_table_attr, attr);
267 struct acpi_table_header *table_header = NULL;
268 acpi_status status;
269 char name[ACPI_NAME_SIZE];
270
271 if (strncmp(table_attr->name, "NULL", 4))
272 memcpy(name, table_attr->name, ACPI_NAME_SIZE);
273 else
274 memcpy(name, "\0\0\0\0", 4);
275
276 status = acpi_get_table(name, table_attr->instance, &table_header);
277 if (ACPI_FAILURE(status))
278 return -ENODEV;
279
280 return memory_read_from_buffer(buf, count, &offset,
281 table_header, table_header->length);
282}
283
284static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
285 struct acpi_table_header *table_header)
286{
287 struct acpi_table_header *header = NULL;
288 struct acpi_table_attr *attr = NULL;
289
290 sysfs_attr_init(&table_attr->attr.attr);
291 if (table_header->signature[0] != '\0')
292 memcpy(table_attr->name, table_header->signature,
293 ACPI_NAME_SIZE);
294 else
295 memcpy(table_attr->name, "NULL", 4);
296
297 list_for_each_entry(attr, &acpi_table_attr_list, node) {
298 if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
299 if (table_attr->instance < attr->instance)
300 table_attr->instance = attr->instance;
301 }
302 table_attr->instance++;
303
304 if (table_attr->instance > 1 || (table_attr->instance == 1 &&
305 !acpi_get_table
306 (table_header->signature, 2, &header)))
307 sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
308 table_attr->instance);
309
310 table_attr->attr.size = table_header->length;
311 table_attr->attr.read = acpi_table_show;
312 table_attr->attr.attr.name = table_attr->name;
313 table_attr->attr.attr.mode = 0400;
314
315 return;
316}
317
318static acpi_status
319acpi_sysfs_table_handler(u32 event, void *table, void *context)
320{
321 struct acpi_table_attr *table_attr;
322
323 switch (event) {
324 case ACPI_TABLE_EVENT_LOAD:
325 table_attr =
326 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
327 if (!table_attr)
328 return AE_NO_MEMORY;
329
330 acpi_table_attr_init(table_attr, table);
331 if (sysfs_create_bin_file(dynamic_tables_kobj,
332 &table_attr->attr)) {
333 kfree(table_attr);
334 return AE_ERROR;
335 } else
336 list_add_tail(&table_attr->node, &acpi_table_attr_list);
337 break;
338 case ACPI_TABLE_EVENT_UNLOAD:
339
340
341
342
343
344 break;
345 default:
346 return AE_BAD_PARAMETER;
347 }
348 return AE_OK;
349}
350
351static int acpi_tables_sysfs_init(void)
352{
353 struct acpi_table_attr *table_attr;
354 struct acpi_table_header *table_header = NULL;
355 int table_index;
356 acpi_status status;
357 int ret;
358
359 tables_kobj = kobject_create_and_add("tables", acpi_kobj);
360 if (!tables_kobj)
361 goto err;
362
363 dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
364 if (!dynamic_tables_kobj)
365 goto err_dynamic_tables;
366
367 for (table_index = 0;; table_index++) {
368 status = acpi_get_table_by_index(table_index, &table_header);
369
370 if (status == AE_BAD_PARAMETER)
371 break;
372
373 if (ACPI_FAILURE(status))
374 continue;
375
376 table_attr = NULL;
377 table_attr = kzalloc(sizeof(*table_attr), GFP_KERNEL);
378 if (!table_attr)
379 return -ENOMEM;
380
381 acpi_table_attr_init(table_attr, table_header);
382 ret = sysfs_create_bin_file(tables_kobj, &table_attr->attr);
383 if (ret) {
384 kfree(table_attr);
385 return ret;
386 }
387 list_add_tail(&table_attr->node, &acpi_table_attr_list);
388 }
389
390 kobject_uevent(tables_kobj, KOBJ_ADD);
391 kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
392 status = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
393
394 return ACPI_FAILURE(status) ? -EINVAL : 0;
395err_dynamic_tables:
396 kobject_put(tables_kobj);
397err:
398 return -ENOMEM;
399}
400
401
402
403
404
405
406u32 acpi_irq_handled;
407u32 acpi_irq_not_handled;
408
409#define COUNT_GPE 0
410#define COUNT_SCI 1
411#define COUNT_SCI_NOT 2
412#define COUNT_ERROR 3
413#define NUM_COUNTERS_EXTRA 4
414
415struct event_counter {
416 u32 count;
417 u32 flags;
418};
419
420static struct event_counter *all_counters;
421static u32 num_gpes;
422static u32 num_counters;
423static struct attribute **all_attrs;
424static u32 acpi_gpe_count;
425
426static struct attribute_group interrupt_stats_attr_group = {
427 .name = "interrupts",
428};
429
430static struct kobj_attribute *counter_attrs;
431
432static void delete_gpe_attr_array(void)
433{
434 struct event_counter *tmp = all_counters;
435
436 all_counters = NULL;
437 kfree(tmp);
438
439 if (counter_attrs) {
440 int i;
441
442 for (i = 0; i < num_gpes; i++)
443 kfree(counter_attrs[i].attr.name);
444
445 kfree(counter_attrs);
446 }
447 kfree(all_attrs);
448
449 return;
450}
451
452static void gpe_count(u32 gpe_number)
453{
454 acpi_gpe_count++;
455
456 if (!all_counters)
457 return;
458
459 if (gpe_number < num_gpes)
460 all_counters[gpe_number].count++;
461 else
462 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
463 COUNT_ERROR].count++;
464
465 return;
466}
467
468static void fixed_event_count(u32 event_number)
469{
470 if (!all_counters)
471 return;
472
473 if (event_number < ACPI_NUM_FIXED_EVENTS)
474 all_counters[num_gpes + event_number].count++;
475 else
476 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
477 COUNT_ERROR].count++;
478
479 return;
480}
481
482static void acpi_global_event_handler(u32 event_type, acpi_handle device,
483 u32 event_number, void *context)
484{
485 if (event_type == ACPI_EVENT_TYPE_GPE)
486 gpe_count(event_number);
487
488 if (event_type == ACPI_EVENT_TYPE_FIXED)
489 fixed_event_count(event_number);
490}
491
492static int get_status(u32 index, acpi_event_status *status,
493 acpi_handle *handle)
494{
495 int result = 0;
496
497 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
498 goto end;
499
500 if (index < num_gpes) {
501 result = acpi_get_gpe_device(index, handle);
502 if (result) {
503 ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
504 "Invalid GPE 0x%x", index));
505 goto end;
506 }
507 result = acpi_get_gpe_status(*handle, index, status);
508 } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
509 result = acpi_get_event_status(index - num_gpes, status);
510
511end:
512 return result;
513}
514
515static ssize_t counter_show(struct kobject *kobj,
516 struct kobj_attribute *attr, char *buf)
517{
518 int index = attr - counter_attrs;
519 int size;
520 acpi_handle handle;
521 acpi_event_status status;
522 int result = 0;
523
524 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
525 acpi_irq_handled;
526 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
527 acpi_irq_not_handled;
528 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
529 acpi_gpe_count;
530 size = sprintf(buf, "%8d", all_counters[index].count);
531
532
533 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
534 goto end;
535
536 result = get_status(index, &status, &handle);
537 if (result)
538 goto end;
539
540 if (!(status & ACPI_EVENT_FLAG_HANDLE))
541 size += sprintf(buf + size, " invalid");
542 else if (status & ACPI_EVENT_FLAG_ENABLED)
543 size += sprintf(buf + size, " enabled");
544 else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
545 size += sprintf(buf + size, " wake_enabled");
546 else
547 size += sprintf(buf + size, " disabled");
548
549end:
550 size += sprintf(buf + size, "\n");
551 return result ? result : size;
552}
553
554
555
556
557
558
559static ssize_t counter_set(struct kobject *kobj,
560 struct kobj_attribute *attr, const char *buf,
561 size_t size)
562{
563 int index = attr - counter_attrs;
564 acpi_event_status status;
565 acpi_handle handle;
566 int result = 0;
567 unsigned long tmp;
568
569 if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
570 int i;
571 for (i = 0; i < num_counters; ++i)
572 all_counters[i].count = 0;
573 acpi_gpe_count = 0;
574 acpi_irq_handled = 0;
575 acpi_irq_not_handled = 0;
576 goto end;
577 }
578
579
580 result = get_status(index, &status, &handle);
581 if (result)
582 goto end;
583
584 if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
585 printk(KERN_WARNING PREFIX
586 "Can not change Invalid GPE/Fixed Event status\n");
587 return -EINVAL;
588 }
589
590 if (index < num_gpes) {
591 if (!strcmp(buf, "disable\n") &&
592 (status & ACPI_EVENT_FLAG_ENABLED))
593 result = acpi_disable_gpe(handle, index);
594 else if (!strcmp(buf, "enable\n") &&
595 !(status & ACPI_EVENT_FLAG_ENABLED))
596 result = acpi_enable_gpe(handle, index);
597 else if (!strcmp(buf, "clear\n") &&
598 (status & ACPI_EVENT_FLAG_SET))
599 result = acpi_clear_gpe(handle, index);
600 else if (!kstrtoul(buf, 0, &tmp))
601 all_counters[index].count = tmp;
602 else
603 result = -EINVAL;
604 } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
605 int event = index - num_gpes;
606 if (!strcmp(buf, "disable\n") &&
607 (status & ACPI_EVENT_FLAG_ENABLED))
608 result = acpi_disable_event(event, ACPI_NOT_ISR);
609 else if (!strcmp(buf, "enable\n") &&
610 !(status & ACPI_EVENT_FLAG_ENABLED))
611 result = acpi_enable_event(event, ACPI_NOT_ISR);
612 else if (!strcmp(buf, "clear\n") &&
613 (status & ACPI_EVENT_FLAG_SET))
614 result = acpi_clear_event(event);
615 else if (!kstrtoul(buf, 0, &tmp))
616 all_counters[index].count = tmp;
617 else
618 result = -EINVAL;
619 } else
620 all_counters[index].count = strtoul(buf, NULL, 0);
621
622 if (ACPI_FAILURE(result))
623 result = -EINVAL;
624end:
625 return result ? result : size;
626}
627
628void acpi_irq_stats_init(void)
629{
630 acpi_status status;
631 int i;
632
633 if (all_counters)
634 return;
635
636 num_gpes = acpi_current_gpe_count;
637 num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
638
639 all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
640 GFP_KERNEL);
641 if (all_attrs == NULL)
642 return;
643
644 all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
645 GFP_KERNEL);
646 if (all_counters == NULL)
647 goto fail;
648
649 status = acpi_install_global_event_handler(acpi_global_event_handler, NULL);
650 if (ACPI_FAILURE(status))
651 goto fail;
652
653 counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
654 GFP_KERNEL);
655 if (counter_attrs == NULL)
656 goto fail;
657
658 for (i = 0; i < num_counters; ++i) {
659 char buffer[12];
660 char *name;
661
662 if (i < num_gpes)
663 sprintf(buffer, "gpe%02X", i);
664 else if (i == num_gpes + ACPI_EVENT_PMTIMER)
665 sprintf(buffer, "ff_pmtimer");
666 else if (i == num_gpes + ACPI_EVENT_GLOBAL)
667 sprintf(buffer, "ff_gbl_lock");
668 else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
669 sprintf(buffer, "ff_pwr_btn");
670 else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
671 sprintf(buffer, "ff_slp_btn");
672 else if (i == num_gpes + ACPI_EVENT_RTC)
673 sprintf(buffer, "ff_rt_clk");
674 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
675 sprintf(buffer, "gpe_all");
676 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
677 sprintf(buffer, "sci");
678 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
679 sprintf(buffer, "sci_not");
680 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
681 sprintf(buffer, "error");
682 else
683 sprintf(buffer, "bug%02X", i);
684
685 name = kstrdup(buffer, GFP_KERNEL);
686 if (name == NULL)
687 goto fail;
688
689 sysfs_attr_init(&counter_attrs[i].attr);
690 counter_attrs[i].attr.name = name;
691 counter_attrs[i].attr.mode = 0644;
692 counter_attrs[i].show = counter_show;
693 counter_attrs[i].store = counter_set;
694
695 all_attrs[i] = &counter_attrs[i].attr;
696 }
697
698 interrupt_stats_attr_group.attrs = all_attrs;
699 if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
700 return;
701
702fail:
703 delete_gpe_attr_array();
704 return;
705}
706
707static void __exit interrupt_stats_exit(void)
708{
709 sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
710
711 delete_gpe_attr_array();
712
713 return;
714}
715
716static ssize_t
717acpi_show_profile(struct device *dev, struct device_attribute *attr,
718 char *buf)
719{
720 return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
721}
722
723static const struct device_attribute pm_profile_attr =
724 __ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
725
726static ssize_t hotplug_enabled_show(struct kobject *kobj,
727 struct kobj_attribute *attr, char *buf)
728{
729 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
730
731 return sprintf(buf, "%d\n", hotplug->enabled);
732}
733
734static ssize_t hotplug_enabled_store(struct kobject *kobj,
735 struct kobj_attribute *attr,
736 const char *buf, size_t size)
737{
738 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
739 unsigned int val;
740
741 if (kstrtouint(buf, 10, &val) || val > 1)
742 return -EINVAL;
743
744 acpi_scan_hotplug_enabled(hotplug, val);
745 return size;
746}
747
748static struct kobj_attribute hotplug_enabled_attr =
749 __ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show,
750 hotplug_enabled_store);
751
752static struct attribute *hotplug_profile_attrs[] = {
753 &hotplug_enabled_attr.attr,
754 NULL
755};
756
757static struct kobj_type acpi_hotplug_profile_ktype = {
758 .sysfs_ops = &kobj_sysfs_ops,
759 .default_attrs = hotplug_profile_attrs,
760};
761
762void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
763 const char *name)
764{
765 int error;
766
767 if (!hotplug_kobj)
768 goto err_out;
769
770 error = kobject_init_and_add(&hotplug->kobj,
771 &acpi_hotplug_profile_ktype, hotplug_kobj, "%s", name);
772 if (error)
773 goto err_out;
774
775 kobject_uevent(&hotplug->kobj, KOBJ_ADD);
776 return;
777
778 err_out:
779 pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
780}
781
782static ssize_t force_remove_show(struct kobject *kobj,
783 struct kobj_attribute *attr, char *buf)
784{
785 return sprintf(buf, "%d\n", !!acpi_force_hot_remove);
786}
787
788static ssize_t force_remove_store(struct kobject *kobj,
789 struct kobj_attribute *attr,
790 const char *buf, size_t size)
791{
792 bool val;
793 int ret;
794
795 ret = strtobool(buf, &val);
796 if (ret < 0)
797 return ret;
798
799 lock_device_hotplug();
800 acpi_force_hot_remove = val;
801 unlock_device_hotplug();
802 return size;
803}
804
805static const struct kobj_attribute force_remove_attr =
806 __ATTR(force_remove, S_IRUGO | S_IWUSR, force_remove_show,
807 force_remove_store);
808
809int __init acpi_sysfs_init(void)
810{
811 int result;
812
813 result = acpi_tables_sysfs_init();
814 if (result)
815 return result;
816
817 hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
818 result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
819 if (result)
820 return result;
821
822 result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
823 return result;
824}
825
