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drm/i915: Invariably invalidate before ctx switch
[deliverable/linux.git] / drivers / acpi / sysfs.c
CommitLineData
1c8fce27
ZR		 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>
8b48463f 8#include <linux/acpi.h>
1c8fce27 9
3f8055c3
RW		 10#include "internal.h"
11
1c8fce27
ZR		 12#define _COMPONENT ACPI_SYSTEM_COMPONENT
13ACPI_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
28struct acpi_dlayer {
29 const char *name;
30 unsigned long value;
31};
32struct acpi_dlevel {
33 const char *name;
34 unsigned long value;
35};
36#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
37
38static 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
70static 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
ec652b35 105static int param_get_debug_layer(char *buffer, const struct kernel_param *kp)
1c8fce27
ZR		 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
ec652b35 133static int param_get_debug_level(char *buffer, const struct kernel_param *kp)
1c8fce27
ZR		 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
9c8b04be 154static const struct kernel_param_ops param_ops_debug_layer = {
ec652b35
ZR		 155 .set = param_set_uint,
156 .get = param_get_debug_layer,
157};
158
9c8b04be 159static const struct kernel_param_ops param_ops_debug_level = {
ec652b35
ZR		 160 .set = param_set_uint,
161 .get = param_get_debug_level,
162};
163
164module_param_cb(debug_layer, &param_ops_debug_layer, &acpi_dbg_layer, 0644);
165module_param_cb(debug_level, &param_ops_debug_level, &acpi_dbg_level, 0644);
1c8fce27
ZR		 166
167static char trace_method_name[6];
168module_param_string(trace_method_name, trace_method_name, 6, 0644);
169static unsigned int trace_debug_layer;
170module_param(trace_debug_layer, uint, 0644);
171static unsigned int trace_debug_level;
172module_param(trace_debug_level, uint, 0644);
173
174static int param_set_trace_state(const char *val, struct kernel_param *kp)
175{
176 int result = 0;
177
869639f9 178 if (!strncmp(val, "enable", sizeof("enable") - 1)) {
1c8fce27
ZR		 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
869639f9 186 if (!strncmp(val, "disable", sizeof("disable") - 1)) {
1c8fce27
ZR		 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;
204exit:
205 return result;
206}
207
208static 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
221module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
222 NULL, 0644);
223#endif /* CONFIG_ACPI_DEBUG */
224
aecad432
TR		 225
226/* /sys/modules/acpi/parameters/aml_debug_output */
227
228module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
481c1381 229 byte, 0644);
aecad432
TR		 230MODULE_PARM_DESC(aml_debug_output,
231 "To enable/disable the ACPI Debug Object output.");
232
1c8fce27
ZR		 233/* /sys/module/acpi/parameters/acpica_version */
234static 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
243module_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
251static LIST_HEAD(acpi_table_attr_list);
252static struct kobject *tables_kobj;
253static struct kobject *dynamic_tables_kobj;
3f8055c3 254static struct kobject *hotplug_kobj;
1c8fce27
ZR		 255
256struct acpi_table_attr {
257 struct bin_attribute attr;
258 char name[8];
259 int instance;
260 struct list_head node;
261};
262
263static 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
286static 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
083ca8c4 312 table_attr->attr.size = table_header->length;
1c8fce27
ZR		 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
320static acpi_status
321acpi_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
353static int acpi_tables_sysfs_init(void)
354{
355 struct acpi_table_attr *table_attr;
356 struct acpi_table_header *table_header = NULL;
de03beed
JC		 357 int table_index;
358 acpi_status status;
359 int ret;
1c8fce27
ZR		 360
361 tables_kobj = kobject_create_and_add("tables", acpi_kobj);
362 if (!tables_kobj)
363 goto err;
364
365 dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
366 if (!dynamic_tables_kobj)
367 goto err_dynamic_tables;
368
de03beed
JC		 369 for (table_index = 0;; table_index++) {
370 status = acpi_get_table_by_index(table_index, &table_header);
371
372 if (status == AE_BAD_PARAMETER)
373 break;
374
375 if (ACPI_FAILURE(status))
376 continue;
377
378 table_attr = NULL;
379 table_attr = kzalloc(sizeof(*table_attr), GFP_KERNEL);
380 if (!table_attr)
381 return -ENOMEM;
382
383 acpi_table_attr_init(table_attr, table_header);
384 ret = sysfs_create_bin_file(tables_kobj, &table_attr->attr);
385 if (ret) {
386 kfree(table_attr);
387 return ret;
1c8fce27 388 }
de03beed
JC		 389 list_add_tail(&table_attr->node, &acpi_table_attr_list);
390 }
391
1c8fce27
ZR		 392 kobject_uevent(tables_kobj, KOBJ_ADD);
393 kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
de03beed 394 status = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
1c8fce27 395
de03beed 396 return ACPI_FAILURE(status) ? -EINVAL : 0;
1c8fce27
ZR		 397err_dynamic_tables:
398 kobject_put(tables_kobj);
399err:
400 return -ENOMEM;
401}
402
403/*
404 * Detailed ACPI IRQ counters:
405 * /sys/firmware/acpi/interrupts/
406 */
407
408u32 acpi_irq_handled;
409u32 acpi_irq_not_handled;
410
411#define COUNT_GPE 0
412#define COUNT_SCI 1 /* acpi_irq_handled */
413#define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
414#define COUNT_ERROR 3 /* other */
415#define NUM_COUNTERS_EXTRA 4
416
417struct event_counter {
418 u32 count;
419 u32 flags;
420};
421
422static struct event_counter *all_counters;
423static u32 num_gpes;
424static u32 num_counters;
425static struct attribute **all_attrs;
426static u32 acpi_gpe_count;
427
428static struct attribute_group interrupt_stats_attr_group = {
429 .name = "interrupts",
430};
431
432static struct kobj_attribute *counter_attrs;
433
434static void delete_gpe_attr_array(void)
435{
436 struct event_counter *tmp = all_counters;
437
438 all_counters = NULL;
439 kfree(tmp);
440
441 if (counter_attrs) {
442 int i;
443
444 for (i = 0; i < num_gpes; i++)
445 kfree(counter_attrs[i].attr.name);
446
447 kfree(counter_attrs);
448 }
449 kfree(all_attrs);
450
451 return;
452}
453
a0fcdb23 454static void gpe_count(u32 gpe_number)
1c8fce27
ZR		 455{
456 acpi_gpe_count++;
457
458 if (!all_counters)
459 return;
460
461 if (gpe_number < num_gpes)
462 all_counters[gpe_number].count++;
463 else
464 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
465 COUNT_ERROR].count++;
466
467 return;
468}
469
a0fcdb23 470static void fixed_event_count(u32 event_number)
1c8fce27
ZR		 471{
472 if (!all_counters)
473 return;
474
475 if (event_number < ACPI_NUM_FIXED_EVENTS)
476 all_counters[num_gpes + event_number].count++;
477 else
478 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
479 COUNT_ERROR].count++;
480
481 return;
482}
483
644ef74e 484static void acpi_global_event_handler(u32 event_type, acpi_handle device,
a0fcdb23
LM		 485 u32 event_number, void *context)
486{
487 if (event_type == ACPI_EVENT_TYPE_GPE)
488 gpe_count(event_number);
489
490 if (event_type == ACPI_EVENT_TYPE_FIXED)
491 fixed_event_count(event_number);
492}
493
1c8fce27
ZR		 494static int get_status(u32 index, acpi_event_status *status,
495 acpi_handle *handle)
496{
497 int result = 0;
498
499 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
500 goto end;
501
502 if (index < num_gpes) {
503 result = acpi_get_gpe_device(index, handle);
504 if (result) {
505 ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
c6284237 506 "Invalid GPE 0x%x", index));
1c8fce27
ZR		 507 goto end;
508 }
509 result = acpi_get_gpe_status(*handle, index, status);
510 } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
511 result = acpi_get_event_status(index - num_gpes, status);
512
513end:
514 return result;
515}
516
517static ssize_t counter_show(struct kobject *kobj,
518 struct kobj_attribute *attr, char *buf)
519{
520 int index = attr - counter_attrs;
521 int size;
522 acpi_handle handle;
523 acpi_event_status status;
524 int result = 0;
525
526 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
527 acpi_irq_handled;
528 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
529 acpi_irq_not_handled;
530 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
531 acpi_gpe_count;
532 size = sprintf(buf, "%8d", all_counters[index].count);
533
534 /* "gpe_all" or "sci" */
535 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
536 goto end;
537
538 result = get_status(index, &status, &handle);
539 if (result)
540 goto end;
541
542 if (!(status & ACPI_EVENT_FLAG_HANDLE))
543 size += sprintf(buf + size, " invalid");
544 else if (status & ACPI_EVENT_FLAG_ENABLED)
545 size += sprintf(buf + size, " enabled");
546 else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
547 size += sprintf(buf + size, " wake_enabled");
548 else
549 size += sprintf(buf + size, " disabled");
550
551end:
552 size += sprintf(buf + size, "\n");
553 return result ? result : size;
554}
555
556/*
557 * counter_set() sets the specified counter.
558 * setting the total "sci" file to any value clears all counters.
559 * enable/disable/clear a gpe/fixed event in user space.
560 */
561static ssize_t counter_set(struct kobject *kobj,
562 struct kobj_attribute *attr, const char *buf,
563 size_t size)
564{
565 int index = attr - counter_attrs;
566 acpi_event_status status;
567 acpi_handle handle;
568 int result = 0;
c48b1565 569 unsigned long tmp;
1c8fce27
ZR		 570
571 if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
572 int i;
573 for (i = 0; i < num_counters; ++i)
574 all_counters[i].count = 0;
575 acpi_gpe_count = 0;
576 acpi_irq_handled = 0;
577 acpi_irq_not_handled = 0;
578 goto end;
579 }
580
581 /* show the event status for both GPEs and Fixed Events */
582 result = get_status(index, &status, &handle);
583 if (result)
584 goto end;
585
586 if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
587 printk(KERN_WARNING PREFIX
588 "Can not change Invalid GPE/Fixed Event status\n");
589 return -EINVAL;
590 }
591
592 if (index < num_gpes) {
593 if (!strcmp(buf, "disable\n") &&
594 (status & ACPI_EVENT_FLAG_ENABLED))
595 result = acpi_disable_gpe(handle, index);
596 else if (!strcmp(buf, "enable\n") &&
597 !(status & ACPI_EVENT_FLAG_ENABLED))
598 result = acpi_enable_gpe(handle, index);
599 else if (!strcmp(buf, "clear\n") &&
600 (status & ACPI_EVENT_FLAG_SET))
601 result = acpi_clear_gpe(handle, index);
c48b1565
LT		 602 else if (!kstrtoul(buf, 0, &tmp))
603 all_counters[index].count = tmp;
1c8fce27 604 else
c48b1565 605 result = -EINVAL;
1c8fce27
ZR		 606 } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
607 int event = index - num_gpes;
608 if (!strcmp(buf, "disable\n") &&
609 (status & ACPI_EVENT_FLAG_ENABLED))
610 result = acpi_disable_event(event, ACPI_NOT_ISR);
611 else if (!strcmp(buf, "enable\n") &&
612 !(status & ACPI_EVENT_FLAG_ENABLED))
613 result = acpi_enable_event(event, ACPI_NOT_ISR);
614 else if (!strcmp(buf, "clear\n") &&
615 (status & ACPI_EVENT_FLAG_SET))
616 result = acpi_clear_event(event);
c48b1565
LT		 617 else if (!kstrtoul(buf, 0, &tmp))
618 all_counters[index].count = tmp;
1c8fce27 619 else
c48b1565 620 result = -EINVAL;
1c8fce27
ZR		 621 } else
622 all_counters[index].count = strtoul(buf, NULL, 0);
623
624 if (ACPI_FAILURE(result))
625 result = -EINVAL;
626end:
627 return result ? result : size;
628}
629
630void acpi_irq_stats_init(void)
631{
a0fcdb23 632 acpi_status status;
1c8fce27
ZR		 633 int i;
634
635 if (all_counters)
636 return;
637
638 num_gpes = acpi_current_gpe_count;
639 num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
640
641 all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
642 GFP_KERNEL);
643 if (all_attrs == NULL)
644 return;
645
646 all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
647 GFP_KERNEL);
648 if (all_counters == NULL)
649 goto fail;
650
644ef74e 651 status = acpi_install_global_event_handler(acpi_global_event_handler, NULL);
a0fcdb23
LM		 652 if (ACPI_FAILURE(status))
653 goto fail;
654
1c8fce27
ZR		 655 counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
656 GFP_KERNEL);
657 if (counter_attrs == NULL)
658 goto fail;
659
660 for (i = 0; i < num_counters; ++i) {
661 char buffer[12];
662 char *name;
663
664 if (i < num_gpes)
665 sprintf(buffer, "gpe%02X", i);
666 else if (i == num_gpes + ACPI_EVENT_PMTIMER)
667 sprintf(buffer, "ff_pmtimer");
668 else if (i == num_gpes + ACPI_EVENT_GLOBAL)
669 sprintf(buffer, "ff_gbl_lock");
670 else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
671 sprintf(buffer, "ff_pwr_btn");
672 else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
673 sprintf(buffer, "ff_slp_btn");
674 else if (i == num_gpes + ACPI_EVENT_RTC)
675 sprintf(buffer, "ff_rt_clk");
676 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
677 sprintf(buffer, "gpe_all");
678 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
679 sprintf(buffer, "sci");
680 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
681 sprintf(buffer, "sci_not");
682 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
683 sprintf(buffer, "error");
684 else
685 sprintf(buffer, "bug%02X", i);
686
096a8aac 687 name = kstrdup(buffer, GFP_KERNEL);
1c8fce27
ZR		 688 if (name == NULL)
689 goto fail;
1c8fce27
ZR		 690
691 sysfs_attr_init(&counter_attrs[i].attr);
692 counter_attrs[i].attr.name = name;
693 counter_attrs[i].attr.mode = 0644;
694 counter_attrs[i].show = counter_show;
695 counter_attrs[i].store = counter_set;
696
697 all_attrs[i] = &counter_attrs[i].attr;
698 }
699
700 interrupt_stats_attr_group.attrs = all_attrs;
701 if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
702 return;
703
704fail:
705 delete_gpe_attr_array();
706 return;
707}
708
709static void __exit interrupt_stats_exit(void)
710{
711 sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
712
713 delete_gpe_attr_array();
714
715 return;
716}
717
362b6460
TR		 718static ssize_t
719acpi_show_profile(struct device *dev, struct device_attribute *attr,
720 char *buf)
721{
722 return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
723}
724
725static const struct device_attribute pm_profile_attr =
726 __ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
727
3f8055c3
RW		 728static ssize_t hotplug_enabled_show(struct kobject *kobj,
729 struct kobj_attribute *attr, char *buf)
730{
731 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
732
733 return sprintf(buf, "%d\n", hotplug->enabled);
734}
735
736static ssize_t hotplug_enabled_store(struct kobject *kobj,
737 struct kobj_attribute *attr,
738 const char *buf, size_t size)
739{
740 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
741 unsigned int val;
742
743 if (kstrtouint(buf, 10, &val) || val > 1)
744 return -EINVAL;
745
746 acpi_scan_hotplug_enabled(hotplug, val);
747 return size;
748}
749
750static struct kobj_attribute hotplug_enabled_attr =
751 __ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show,
752 hotplug_enabled_store);
753
754static struct attribute *hotplug_profile_attrs[] = {
755 &hotplug_enabled_attr.attr,
756 NULL
757};
758
b09753ec 759static struct kobj_type acpi_hotplug_profile_ktype = {
3f8055c3
RW		 760 .sysfs_ops = &kobj_sysfs_ops,
761 .default_attrs = hotplug_profile_attrs,
762};
763
764void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
765 const char *name)
766{
767 int error;
768
769 if (!hotplug_kobj)
770 goto err_out;
771
acd3e2c9
BH		 772 error = kobject_init_and_add(&hotplug->kobj,
773 &acpi_hotplug_profile_ktype, hotplug_kobj, "%s", name);
3f8055c3
RW		 774 if (error)
775 goto err_out;
776
777 kobject_uevent(&hotplug->kobj, KOBJ_ADD);
778 return;
779
780 err_out:
781 pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
782}
783
683058e3
RW		 784static ssize_t force_remove_show(struct kobject *kobj,
785 struct kobj_attribute *attr, char *buf)
786{
787 return sprintf(buf, "%d\n", !!acpi_force_hot_remove);
788}
789
790static ssize_t force_remove_store(struct kobject *kobj,
791 struct kobj_attribute *attr,
792 const char *buf, size_t size)
793{
794 bool val;
795 int ret;
796
797 ret = strtobool(buf, &val);
798 if (ret < 0)
799 return ret;
800
801 lock_device_hotplug();
802 acpi_force_hot_remove = val;
803 unlock_device_hotplug();
804 return size;
805}
806
807static const struct kobj_attribute force_remove_attr =
808 __ATTR(force_remove, S_IRUGO | S_IWUSR, force_remove_show,
809 force_remove_store);
810
1c8fce27
ZR		 811int __init acpi_sysfs_init(void)
812{
813 int result;
814
815 result = acpi_tables_sysfs_init();
362b6460
TR		 816 if (result)
817 return result;
3f8055c3
RW		 818
819 hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
683058e3
RW		 820 result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
821 if (result)
822 return result;
823
362b6460 824 result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
1c8fce27
ZR		 825 return result;
826}
Linux kernel - Deliverables
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