1/*
2 * sysfs.c - ACPI sysfs interface to userspace.
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 * ACPI debug sysfs I/F, including:
18 * /sys/modules/acpi/parameters/debug_layer
19 * /sys/modules/acpi/parameters/debug_level
20 * /sys/modules/acpi/parameters/trace_method_name
21 * /sys/modules/acpi/parameters/trace_state
22 * /sys/modules/acpi/parameters/trace_debug_layer
23 * /sys/modules/acpi/parameters/trace_debug_level
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, &param_ops_debug_layer, &acpi_dbg_layer, 0644);
163module_param_cb(debug_level, &param_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 /* CONFIG_ACPI_DEBUG */
222
223
224/* /sys/modules/acpi/parameters/aml_debug_output */
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/* /sys/module/acpi/parameters/acpica_version */
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 * ACPI table sysfs I/F:
245 * /sys/firmware/acpi/tables/
246 * /sys/firmware/acpi/tables/dynamic/
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		 * we do not need to do anything right now
341		 * because the table is not deleted from the
342		 * global table list when unloading it.
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 * Detailed ACPI IRQ counters:
403 * /sys/firmware/acpi/interrupts/
404 */
405
406u32 acpi_irq_handled;
407u32 acpi_irq_not_handled;
408
409#define COUNT_GPE 0
410#define COUNT_SCI 1		/* acpi_irq_handled */
411#define COUNT_SCI_NOT 2		/* acpi_irq_not_handled */
412#define COUNT_ERROR 3		/* other */
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	/* "gpe_all" or "sci" */
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_HAS_HANDLER))
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 * counter_set() sets the specified counter.
556 * setting the total "sci" file to any value clears all counters.
557 * enable/disable/clear a gpe/fixed event in user space.
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	/* show the event status for both GPEs and Fixed Events */
580	result = get_status(index, &status, &handle);
581	if (result)
582		goto end;
583
584	if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER)) {
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