ACPI / Battery: Add a _BIX quirk for NEC LZ750/LS
[linux-3.10.git] / drivers / acpi / sysfs.c
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 <acpi/acpi_drivers.h>
9
10 #include "internal.h"
11
12 #define _COMPONENT              ACPI_SYSTEM_COMPONENT
13 ACPI_MODULE_NAME("sysfs");
14
15 #define PREFIX "ACPI: "
16
17 #ifdef CONFIG_ACPI_DEBUG
18 /*
19  * ACPI debug sysfs I/F, including:
20  * /sys/modules/acpi/parameters/debug_layer
21  * /sys/modules/acpi/parameters/debug_level
22  * /sys/modules/acpi/parameters/trace_method_name
23  * /sys/modules/acpi/parameters/trace_state
24  * /sys/modules/acpi/parameters/trace_debug_layer
25  * /sys/modules/acpi/parameters/trace_debug_level
26  */
27
28 struct acpi_dlayer {
29         const char *name;
30         unsigned long value;
31 };
32 struct acpi_dlevel {
33         const char *name;
34         unsigned long value;
35 };
36 #define ACPI_DEBUG_INIT(v)      { .name = #v, .value = v }
37
38 static const struct acpi_dlayer acpi_debug_layers[] = {
39         ACPI_DEBUG_INIT(ACPI_UTILITIES),
40         ACPI_DEBUG_INIT(ACPI_HARDWARE),
41         ACPI_DEBUG_INIT(ACPI_EVENTS),
42         ACPI_DEBUG_INIT(ACPI_TABLES),
43         ACPI_DEBUG_INIT(ACPI_NAMESPACE),
44         ACPI_DEBUG_INIT(ACPI_PARSER),
45         ACPI_DEBUG_INIT(ACPI_DISPATCHER),
46         ACPI_DEBUG_INIT(ACPI_EXECUTER),
47         ACPI_DEBUG_INIT(ACPI_RESOURCES),
48         ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
49         ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
50         ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
51         ACPI_DEBUG_INIT(ACPI_COMPILER),
52         ACPI_DEBUG_INIT(ACPI_TOOLS),
53
54         ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
55         ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
56         ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
57         ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
58         ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
59         ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
60         ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
61         ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
62         ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
63         ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
64         ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
65         ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
66         ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
67         ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
68 };
69
70 static const struct acpi_dlevel acpi_debug_levels[] = {
71         ACPI_DEBUG_INIT(ACPI_LV_INIT),
72         ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
73         ACPI_DEBUG_INIT(ACPI_LV_INFO),
74
75         ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
76         ACPI_DEBUG_INIT(ACPI_LV_PARSE),
77         ACPI_DEBUG_INIT(ACPI_LV_LOAD),
78         ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
79         ACPI_DEBUG_INIT(ACPI_LV_EXEC),
80         ACPI_DEBUG_INIT(ACPI_LV_NAMES),
81         ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
82         ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
83         ACPI_DEBUG_INIT(ACPI_LV_TABLES),
84         ACPI_DEBUG_INIT(ACPI_LV_VALUES),
85         ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
86         ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
87         ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
88         ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
89
90         ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
91         ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
92         ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
93
94         ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
95         ACPI_DEBUG_INIT(ACPI_LV_THREADS),
96         ACPI_DEBUG_INIT(ACPI_LV_IO),
97         ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
98
99         ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
100         ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
101         ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
102         ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
103 };
104
105 static int param_get_debug_layer(char *buffer, const struct kernel_param *kp)
106 {
107         int result = 0;
108         int i;
109
110         result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");
111
112         for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
113                 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
114                                   acpi_debug_layers[i].name,
115                                   acpi_debug_layers[i].value,
116                                   (acpi_dbg_layer & acpi_debug_layers[i].value)
117                                   ? '*' : ' ');
118         }
119         result +=
120             sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
121                     ACPI_ALL_DRIVERS,
122                     (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
123                     ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
124                     == 0 ? ' ' : '-');
125         result +=
126             sprintf(buffer + result,
127                     "--\ndebug_layer = 0x%08X ( * = enabled)\n",
128                     acpi_dbg_layer);
129
130         return result;
131 }
132
133 static int param_get_debug_level(char *buffer, const struct kernel_param *kp)
134 {
135         int result = 0;
136         int i;
137
138         result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");
139
140         for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
141                 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
142                                   acpi_debug_levels[i].name,
143                                   acpi_debug_levels[i].value,
144                                   (acpi_dbg_level & acpi_debug_levels[i].value)
145                                   ? '*' : ' ');
146         }
147         result +=
148             sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
149                     acpi_dbg_level);
150
151         return result;
152 }
153
154 static const struct kernel_param_ops param_ops_debug_layer = {
155         .set = param_set_uint,
156         .get = param_get_debug_layer,
157 };
158
159 static const struct kernel_param_ops param_ops_debug_level = {
160         .set = param_set_uint,
161         .get = param_get_debug_level,
162 };
163
164 module_param_cb(debug_layer, &param_ops_debug_layer, &acpi_dbg_layer, 0644);
165 module_param_cb(debug_level, &param_ops_debug_level, &acpi_dbg_level, 0644);
166
167 static char trace_method_name[6];
168 module_param_string(trace_method_name, trace_method_name, 6, 0644);
169 static unsigned int trace_debug_layer;
170 module_param(trace_debug_layer, uint, 0644);
171 static unsigned int trace_debug_level;
172 module_param(trace_debug_level, uint, 0644);
173
174 static int param_set_trace_state(const char *val, struct kernel_param *kp)
175 {
176         int result = 0;
177
178         if (!strncmp(val, "enable", sizeof("enable") - 1)) {
179                 result = acpi_debug_trace(trace_method_name, trace_debug_level,
180                                           trace_debug_layer, 0);
181                 if (result)
182                         result = -EBUSY;
183                 goto exit;
184         }
185
186         if (!strncmp(val, "disable", sizeof("disable") - 1)) {
187                 int name = 0;
188                 result = acpi_debug_trace((char *)&name, trace_debug_level,
189                                           trace_debug_layer, 0);
190                 if (result)
191                         result = -EBUSY;
192                 goto exit;
193         }
194
195         if (!strncmp(val, "1", 1)) {
196                 result = acpi_debug_trace(trace_method_name, trace_debug_level,
197                                           trace_debug_layer, 1);
198                 if (result)
199                         result = -EBUSY;
200                 goto exit;
201         }
202
203         result = -EINVAL;
204 exit:
205         return result;
206 }
207
208 static int param_get_trace_state(char *buffer, struct kernel_param *kp)
209 {
210         if (!acpi_gbl_trace_method_name)
211                 return sprintf(buffer, "disable");
212         else {
213                 if (acpi_gbl_trace_flags & 1)
214                         return sprintf(buffer, "1");
215                 else
216                         return sprintf(buffer, "enable");
217         }
218         return 0;
219 }
220
221 module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
222                   NULL, 0644);
223 #endif /* CONFIG_ACPI_DEBUG */
224
225
226 /* /sys/modules/acpi/parameters/aml_debug_output */
227
228 module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
229                    bool, 0644);
230 MODULE_PARM_DESC(aml_debug_output,
231                  "To enable/disable the ACPI Debug Object output.");
232
233 /* /sys/module/acpi/parameters/acpica_version */
234 static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
235 {
236         int result;
237
238         result = sprintf(buffer, "%x", ACPI_CA_VERSION);
239
240         return result;
241 }
242
243 module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
244
245 /*
246  * ACPI table sysfs I/F:
247  * /sys/firmware/acpi/tables/
248  * /sys/firmware/acpi/tables/dynamic/
249  */
250
251 static LIST_HEAD(acpi_table_attr_list);
252 static struct kobject *tables_kobj;
253 static struct kobject *dynamic_tables_kobj;
254 static struct kobject *hotplug_kobj;
255
256 struct acpi_table_attr {
257         struct bin_attribute attr;
258         char name[8];
259         int instance;
260         struct list_head node;
261 };
262
263 static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
264                                struct bin_attribute *bin_attr, char *buf,
265                                loff_t offset, size_t count)
266 {
267         struct acpi_table_attr *table_attr =
268             container_of(bin_attr, struct acpi_table_attr, attr);
269         struct acpi_table_header *table_header = NULL;
270         acpi_status status;
271         char name[ACPI_NAME_SIZE];
272
273         if (strncmp(table_attr->name, "NULL", 4))
274                 memcpy(name, table_attr->name, ACPI_NAME_SIZE);
275         else
276                 memcpy(name, "\0\0\0\0", 4);
277
278         status = acpi_get_table(name, table_attr->instance, &table_header);
279         if (ACPI_FAILURE(status))
280                 return -ENODEV;
281
282         return memory_read_from_buffer(buf, count, &offset,
283                                        table_header, table_header->length);
284 }
285
286 static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
287                                  struct acpi_table_header *table_header)
288 {
289         struct acpi_table_header *header = NULL;
290         struct acpi_table_attr *attr = NULL;
291
292         sysfs_attr_init(&table_attr->attr.attr);
293         if (table_header->signature[0] != '\0')
294                 memcpy(table_attr->name, table_header->signature,
295                        ACPI_NAME_SIZE);
296         else
297                 memcpy(table_attr->name, "NULL", 4);
298
299         list_for_each_entry(attr, &acpi_table_attr_list, node) {
300                 if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
301                         if (table_attr->instance < attr->instance)
302                                 table_attr->instance = attr->instance;
303         }
304         table_attr->instance++;
305
306         if (table_attr->instance > 1 || (table_attr->instance == 1 &&
307                                          !acpi_get_table
308                                          (table_header->signature, 2, &header)))
309                 sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
310                         table_attr->instance);
311
312         table_attr->attr.size = 0;
313         table_attr->attr.read = acpi_table_show;
314         table_attr->attr.attr.name = table_attr->name;
315         table_attr->attr.attr.mode = 0400;
316
317         return;
318 }
319
320 static acpi_status
321 acpi_sysfs_table_handler(u32 event, void *table, void *context)
322 {
323         struct acpi_table_attr *table_attr;
324
325         switch (event) {
326         case ACPI_TABLE_EVENT_LOAD:
327                 table_attr =
328                     kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
329                 if (!table_attr)
330                         return AE_NO_MEMORY;
331
332                 acpi_table_attr_init(table_attr, table);
333                 if (sysfs_create_bin_file(dynamic_tables_kobj,
334                                           &table_attr->attr)) {
335                         kfree(table_attr);
336                         return AE_ERROR;
337                 } else
338                         list_add_tail(&table_attr->node, &acpi_table_attr_list);
339                 break;
340         case ACPI_TABLE_EVENT_UNLOAD:
341                 /*
342                  * we do not need to do anything right now
343                  * because the table is not deleted from the
344                  * global table list when unloading it.
345                  */
346                 break;
347         default:
348                 return AE_BAD_PARAMETER;
349         }
350         return AE_OK;
351 }
352
353 static int acpi_tables_sysfs_init(void)
354 {
355         struct acpi_table_attr *table_attr;
356         struct acpi_table_header *table_header = NULL;
357         int table_index = 0;
358         int result;
359
360         tables_kobj = kobject_create_and_add("tables", acpi_kobj);
361         if (!tables_kobj)
362                 goto err;
363
364         dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
365         if (!dynamic_tables_kobj)
366                 goto err_dynamic_tables;
367
368         do {
369                 result = acpi_get_table_by_index(table_index, &table_header);
370                 if (!result) {
371                         table_index++;
372                         table_attr = NULL;
373                         table_attr =
374                             kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
375                         if (!table_attr)
376                                 return -ENOMEM;
377
378                         acpi_table_attr_init(table_attr, table_header);
379                         result =
380                             sysfs_create_bin_file(tables_kobj,
381                                                   &table_attr->attr);
382                         if (result) {
383                                 kfree(table_attr);
384                                 return result;
385                         } else
386                                 list_add_tail(&table_attr->node,
387                                               &acpi_table_attr_list);
388                 }
389         } while (!result);
390         kobject_uevent(tables_kobj, KOBJ_ADD);
391         kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
392         result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
393
394         return result == AE_OK ? 0 : -EINVAL;
395 err_dynamic_tables:
396         kobject_put(tables_kobj);
397 err:
398         return -ENOMEM;
399 }
400
401 /*
402  * Detailed ACPI IRQ counters:
403  * /sys/firmware/acpi/interrupts/
404  */
405
406 u32 acpi_irq_handled;
407 u32 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
415 struct event_counter {
416         u32 count;
417         u32 flags;
418 };
419
420 static struct event_counter *all_counters;
421 static u32 num_gpes;
422 static u32 num_counters;
423 static struct attribute **all_attrs;
424 static u32 acpi_gpe_count;
425
426 static struct attribute_group interrupt_stats_attr_group = {
427         .name = "interrupts",
428 };
429
430 static struct kobj_attribute *counter_attrs;
431
432 static 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
452 static 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
468 static 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
482 static 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
492 static 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
511 end:
512         return result;
513 }
514
515 static 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_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
549 end:
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  */
559 static 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
568         if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
569                 int i;
570                 for (i = 0; i < num_counters; ++i)
571                         all_counters[i].count = 0;
572                 acpi_gpe_count = 0;
573                 acpi_irq_handled = 0;
574                 acpi_irq_not_handled = 0;
575                 goto end;
576         }
577
578         /* show the event status for both GPEs and Fixed Events */
579         result = get_status(index, &status, &handle);
580         if (result)
581                 goto end;
582
583         if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
584                 printk(KERN_WARNING PREFIX
585                        "Can not change Invalid GPE/Fixed Event status\n");
586                 return -EINVAL;
587         }
588
589         if (index < num_gpes) {
590                 if (!strcmp(buf, "disable\n") &&
591                     (status & ACPI_EVENT_FLAG_ENABLED))
592                         result = acpi_disable_gpe(handle, index);
593                 else if (!strcmp(buf, "enable\n") &&
594                          !(status & ACPI_EVENT_FLAG_ENABLED))
595                         result = acpi_enable_gpe(handle, index);
596                 else if (!strcmp(buf, "clear\n") &&
597                          (status & ACPI_EVENT_FLAG_SET))
598                         result = acpi_clear_gpe(handle, index);
599                 else
600                         all_counters[index].count = strtoul(buf, NULL, 0);
601         } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
602                 int event = index - num_gpes;
603                 if (!strcmp(buf, "disable\n") &&
604                     (status & ACPI_EVENT_FLAG_ENABLED))
605                         result = acpi_disable_event(event, ACPI_NOT_ISR);
606                 else if (!strcmp(buf, "enable\n") &&
607                          !(status & ACPI_EVENT_FLAG_ENABLED))
608                         result = acpi_enable_event(event, ACPI_NOT_ISR);
609                 else if (!strcmp(buf, "clear\n") &&
610                          (status & ACPI_EVENT_FLAG_SET))
611                         result = acpi_clear_event(event);
612                 else
613                         all_counters[index].count = strtoul(buf, NULL, 0);
614         } else
615                 all_counters[index].count = strtoul(buf, NULL, 0);
616
617         if (ACPI_FAILURE(result))
618                 result = -EINVAL;
619 end:
620         return result ? result : size;
621 }
622
623 void acpi_irq_stats_init(void)
624 {
625         acpi_status status;
626         int i;
627
628         if (all_counters)
629                 return;
630
631         num_gpes = acpi_current_gpe_count;
632         num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
633
634         all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
635                             GFP_KERNEL);
636         if (all_attrs == NULL)
637                 return;
638
639         all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
640                                GFP_KERNEL);
641         if (all_counters == NULL)
642                 goto fail;
643
644         status = acpi_install_global_event_handler(acpi_global_event_handler, NULL);
645         if (ACPI_FAILURE(status))
646                 goto fail;
647
648         counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
649                                 GFP_KERNEL);
650         if (counter_attrs == NULL)
651                 goto fail;
652
653         for (i = 0; i < num_counters; ++i) {
654                 char buffer[12];
655                 char *name;
656
657                 if (i < num_gpes)
658                         sprintf(buffer, "gpe%02X", i);
659                 else if (i == num_gpes + ACPI_EVENT_PMTIMER)
660                         sprintf(buffer, "ff_pmtimer");
661                 else if (i == num_gpes + ACPI_EVENT_GLOBAL)
662                         sprintf(buffer, "ff_gbl_lock");
663                 else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
664                         sprintf(buffer, "ff_pwr_btn");
665                 else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
666                         sprintf(buffer, "ff_slp_btn");
667                 else if (i == num_gpes + ACPI_EVENT_RTC)
668                         sprintf(buffer, "ff_rt_clk");
669                 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
670                         sprintf(buffer, "gpe_all");
671                 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
672                         sprintf(buffer, "sci");
673                 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
674                         sprintf(buffer, "sci_not");
675                 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
676                         sprintf(buffer, "error");
677                 else
678                         sprintf(buffer, "bug%02X", i);
679
680                 name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
681                 if (name == NULL)
682                         goto fail;
683                 strncpy(name, buffer, strlen(buffer) + 1);
684
685                 sysfs_attr_init(&counter_attrs[i].attr);
686                 counter_attrs[i].attr.name = name;
687                 counter_attrs[i].attr.mode = 0644;
688                 counter_attrs[i].show = counter_show;
689                 counter_attrs[i].store = counter_set;
690
691                 all_attrs[i] = &counter_attrs[i].attr;
692         }
693
694         interrupt_stats_attr_group.attrs = all_attrs;
695         if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
696                 return;
697
698 fail:
699         delete_gpe_attr_array();
700         return;
701 }
702
703 static void __exit interrupt_stats_exit(void)
704 {
705         sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
706
707         delete_gpe_attr_array();
708
709         return;
710 }
711
712 static ssize_t
713 acpi_show_profile(struct device *dev, struct device_attribute *attr,
714                   char *buf)
715 {
716         return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
717 }
718
719 static const struct device_attribute pm_profile_attr =
720         __ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
721
722 static ssize_t hotplug_enabled_show(struct kobject *kobj,
723                                     struct kobj_attribute *attr, char *buf)
724 {
725         struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
726
727         return sprintf(buf, "%d\n", hotplug->enabled);
728 }
729
730 static ssize_t hotplug_enabled_store(struct kobject *kobj,
731                                      struct kobj_attribute *attr,
732                                      const char *buf, size_t size)
733 {
734         struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
735         unsigned int val;
736
737         if (kstrtouint(buf, 10, &val) || val > 1)
738                 return -EINVAL;
739
740         acpi_scan_hotplug_enabled(hotplug, val);
741         return size;
742 }
743
744 static struct kobj_attribute hotplug_enabled_attr =
745         __ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show,
746                 hotplug_enabled_store);
747
748 static struct attribute *hotplug_profile_attrs[] = {
749         &hotplug_enabled_attr.attr,
750         NULL
751 };
752
753 static struct kobj_type acpi_hotplug_profile_ktype = {
754         .sysfs_ops = &kobj_sysfs_ops,
755         .default_attrs = hotplug_profile_attrs,
756 };
757
758 void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
759                                     const char *name)
760 {
761         int error;
762
763         if (!hotplug_kobj)
764                 goto err_out;
765
766         kobject_init(&hotplug->kobj, &acpi_hotplug_profile_ktype);
767         error = kobject_set_name(&hotplug->kobj, "%s", name);
768         if (error)
769                 goto err_out;
770
771         hotplug->kobj.parent = hotplug_kobj;
772         error = kobject_add(&hotplug->kobj, hotplug_kobj, NULL);
773         if (error)
774                 goto err_out;
775
776         kobject_uevent(&hotplug->kobj, KOBJ_ADD);
777         return;
778
779  err_out:
780         pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
781 }
782
783 int __init acpi_sysfs_init(void)
784 {
785         int result;
786
787         result = acpi_tables_sysfs_init();
788         if (result)
789                 return result;
790
791         hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
792         result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
793         return result;
794 }