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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> | |
8 | #include <acpi/acpi_drivers.h> | |
9 | ||
10 | #define _COMPONENT ACPI_SYSTEM_COMPONENT | |
11 | ACPI_MODULE_NAME("sysfs"); | |
12 | ||
13 | #define PREFIX "ACPI: " | |
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 | ||
26 | struct acpi_dlayer { | |
27 | const char *name; | |
28 | unsigned long value; | |
29 | }; | |
30 | struct acpi_dlevel { | |
31 | const char *name; | |
32 | unsigned long value; | |
33 | }; | |
34 | #define ACPI_DEBUG_INIT(v) { .name = #v, .value = v } | |
35 | ||
36 | static 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 | ||
68 | static 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 | ||
103 | static int param_get_debug_layer(char *buffer, 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 | ||
131 | static int param_get_debug_level(char *buffer, 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 | ||
152 | module_param_call(debug_layer, param_set_uint, param_get_debug_layer, | |
153 | &acpi_dbg_layer, 0644); | |
154 | module_param_call(debug_level, param_set_uint, param_get_debug_level, | |
155 | &acpi_dbg_level, 0644); | |
156 | ||
157 | static char trace_method_name[6]; | |
158 | module_param_string(trace_method_name, trace_method_name, 6, 0644); | |
159 | static unsigned int trace_debug_layer; | |
160 | module_param(trace_debug_layer, uint, 0644); | |
161 | static unsigned int trace_debug_level; | |
162 | module_param(trace_debug_level, uint, 0644); | |
163 | ||
164 | static int param_set_trace_state(const char *val, struct kernel_param *kp) | |
165 | { | |
166 | int result = 0; | |
167 | ||
168 | if (!strncmp(val, "enable", strlen("enable") - 1)) { | |
169 | result = acpi_debug_trace(trace_method_name, trace_debug_level, | |
170 | trace_debug_layer, 0); | |
171 | if (result) | |
172 | result = -EBUSY; | |
173 | goto exit; | |
174 | } | |
175 | ||
176 | if (!strncmp(val, "disable", strlen("disable") - 1)) { | |
177 | int name = 0; | |
178 | result = acpi_debug_trace((char *)&name, trace_debug_level, | |
179 | trace_debug_layer, 0); | |
180 | if (result) | |
181 | result = -EBUSY; | |
182 | goto exit; | |
183 | } | |
184 | ||
185 | if (!strncmp(val, "1", 1)) { | |
186 | result = acpi_debug_trace(trace_method_name, trace_debug_level, | |
187 | trace_debug_layer, 1); | |
188 | if (result) | |
189 | result = -EBUSY; | |
190 | goto exit; | |
191 | } | |
192 | ||
193 | result = -EINVAL; | |
194 | exit: | |
195 | return result; | |
196 | } | |
197 | ||
198 | static int param_get_trace_state(char *buffer, struct kernel_param *kp) | |
199 | { | |
200 | if (!acpi_gbl_trace_method_name) | |
201 | return sprintf(buffer, "disable"); | |
202 | else { | |
203 | if (acpi_gbl_trace_flags & 1) | |
204 | return sprintf(buffer, "1"); | |
205 | else | |
206 | return sprintf(buffer, "enable"); | |
207 | } | |
208 | return 0; | |
209 | } | |
210 | ||
211 | module_param_call(trace_state, param_set_trace_state, param_get_trace_state, | |
212 | NULL, 0644); | |
213 | #endif /* CONFIG_ACPI_DEBUG */ | |
214 | ||
215 | /* /sys/module/acpi/parameters/acpica_version */ | |
216 | static int param_get_acpica_version(char *buffer, struct kernel_param *kp) | |
217 | { | |
218 | int result; | |
219 | ||
220 | result = sprintf(buffer, "%x", ACPI_CA_VERSION); | |
221 | ||
222 | return result; | |
223 | } | |
224 | ||
225 | module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444); | |
226 | ||
227 | /* | |
228 | * ACPI table sysfs I/F: | |
229 | * /sys/firmware/acpi/tables/ | |
230 | * /sys/firmware/acpi/tables/dynamic/ | |
231 | */ | |
232 | ||
233 | static LIST_HEAD(acpi_table_attr_list); | |
234 | static struct kobject *tables_kobj; | |
235 | static struct kobject *dynamic_tables_kobj; | |
236 | ||
237 | struct acpi_table_attr { | |
238 | struct bin_attribute attr; | |
239 | char name[8]; | |
240 | int instance; | |
241 | struct list_head node; | |
242 | }; | |
243 | ||
244 | static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj, | |
245 | struct bin_attribute *bin_attr, char *buf, | |
246 | loff_t offset, size_t count) | |
247 | { | |
248 | struct acpi_table_attr *table_attr = | |
249 | container_of(bin_attr, struct acpi_table_attr, attr); | |
250 | struct acpi_table_header *table_header = NULL; | |
251 | acpi_status status; | |
252 | char name[ACPI_NAME_SIZE]; | |
253 | ||
254 | if (strncmp(table_attr->name, "NULL", 4)) | |
255 | memcpy(name, table_attr->name, ACPI_NAME_SIZE); | |
256 | else | |
257 | memcpy(name, "\0\0\0\0", 4); | |
258 | ||
259 | status = acpi_get_table(name, table_attr->instance, &table_header); | |
260 | if (ACPI_FAILURE(status)) | |
261 | return -ENODEV; | |
262 | ||
263 | return memory_read_from_buffer(buf, count, &offset, | |
264 | table_header, table_header->length); | |
265 | } | |
266 | ||
267 | static void acpi_table_attr_init(struct acpi_table_attr *table_attr, | |
268 | struct acpi_table_header *table_header) | |
269 | { | |
270 | struct acpi_table_header *header = NULL; | |
271 | struct acpi_table_attr *attr = NULL; | |
272 | ||
273 | sysfs_attr_init(&table_attr->attr.attr); | |
274 | if (table_header->signature[0] != '\0') | |
275 | memcpy(table_attr->name, table_header->signature, | |
276 | ACPI_NAME_SIZE); | |
277 | else | |
278 | memcpy(table_attr->name, "NULL", 4); | |
279 | ||
280 | list_for_each_entry(attr, &acpi_table_attr_list, node) { | |
281 | if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE)) | |
282 | if (table_attr->instance < attr->instance) | |
283 | table_attr->instance = attr->instance; | |
284 | } | |
285 | table_attr->instance++; | |
286 | ||
287 | if (table_attr->instance > 1 || (table_attr->instance == 1 && | |
288 | !acpi_get_table | |
289 | (table_header->signature, 2, &header))) | |
290 | sprintf(table_attr->name + ACPI_NAME_SIZE, "%d", | |
291 | table_attr->instance); | |
292 | ||
293 | table_attr->attr.size = 0; | |
294 | table_attr->attr.read = acpi_table_show; | |
295 | table_attr->attr.attr.name = table_attr->name; | |
296 | table_attr->attr.attr.mode = 0400; | |
297 | ||
298 | return; | |
299 | } | |
300 | ||
301 | static acpi_status | |
302 | acpi_sysfs_table_handler(u32 event, void *table, void *context) | |
303 | { | |
304 | struct acpi_table_attr *table_attr; | |
305 | ||
306 | switch (event) { | |
307 | case ACPI_TABLE_EVENT_LOAD: | |
308 | table_attr = | |
309 | kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); | |
310 | if (!table_attr) | |
311 | return AE_NO_MEMORY; | |
312 | ||
313 | acpi_table_attr_init(table_attr, table); | |
314 | if (sysfs_create_bin_file(dynamic_tables_kobj, | |
315 | &table_attr->attr)) { | |
316 | kfree(table_attr); | |
317 | return AE_ERROR; | |
318 | } else | |
319 | list_add_tail(&table_attr->node, &acpi_table_attr_list); | |
320 | break; | |
321 | case ACPI_TABLE_EVENT_UNLOAD: | |
322 | /* | |
323 | * we do not need to do anything right now | |
324 | * because the table is not deleted from the | |
325 | * global table list when unloading it. | |
326 | */ | |
327 | break; | |
328 | default: | |
329 | return AE_BAD_PARAMETER; | |
330 | } | |
331 | return AE_OK; | |
332 | } | |
333 | ||
334 | static int acpi_tables_sysfs_init(void) | |
335 | { | |
336 | struct acpi_table_attr *table_attr; | |
337 | struct acpi_table_header *table_header = NULL; | |
338 | int table_index = 0; | |
339 | int result; | |
340 | ||
341 | tables_kobj = kobject_create_and_add("tables", acpi_kobj); | |
342 | if (!tables_kobj) | |
343 | goto err; | |
344 | ||
345 | dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj); | |
346 | if (!dynamic_tables_kobj) | |
347 | goto err_dynamic_tables; | |
348 | ||
349 | do { | |
350 | result = acpi_get_table_by_index(table_index, &table_header); | |
351 | if (!result) { | |
352 | table_index++; | |
353 | table_attr = NULL; | |
354 | table_attr = | |
355 | kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); | |
356 | if (!table_attr) | |
357 | return -ENOMEM; | |
358 | ||
359 | acpi_table_attr_init(table_attr, table_header); | |
360 | result = | |
361 | sysfs_create_bin_file(tables_kobj, | |
362 | &table_attr->attr); | |
363 | if (result) { | |
364 | kfree(table_attr); | |
365 | return result; | |
366 | } else | |
367 | list_add_tail(&table_attr->node, | |
368 | &acpi_table_attr_list); | |
369 | } | |
370 | } while (!result); | |
371 | kobject_uevent(tables_kobj, KOBJ_ADD); | |
372 | kobject_uevent(dynamic_tables_kobj, KOBJ_ADD); | |
373 | result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL); | |
374 | ||
375 | return result == AE_OK ? 0 : -EINVAL; | |
376 | err_dynamic_tables: | |
377 | kobject_put(tables_kobj); | |
378 | err: | |
379 | return -ENOMEM; | |
380 | } | |
381 | ||
382 | /* | |
383 | * Detailed ACPI IRQ counters: | |
384 | * /sys/firmware/acpi/interrupts/ | |
385 | */ | |
386 | ||
387 | u32 acpi_irq_handled; | |
388 | u32 acpi_irq_not_handled; | |
389 | ||
390 | #define COUNT_GPE 0 | |
391 | #define COUNT_SCI 1 /* acpi_irq_handled */ | |
392 | #define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */ | |
393 | #define COUNT_ERROR 3 /* other */ | |
394 | #define NUM_COUNTERS_EXTRA 4 | |
395 | ||
396 | struct event_counter { | |
397 | u32 count; | |
398 | u32 flags; | |
399 | }; | |
400 | ||
401 | static struct event_counter *all_counters; | |
402 | static u32 num_gpes; | |
403 | static u32 num_counters; | |
404 | static struct attribute **all_attrs; | |
405 | static u32 acpi_gpe_count; | |
406 | ||
407 | static struct attribute_group interrupt_stats_attr_group = { | |
408 | .name = "interrupts", | |
409 | }; | |
410 | ||
411 | static struct kobj_attribute *counter_attrs; | |
412 | ||
413 | static void delete_gpe_attr_array(void) | |
414 | { | |
415 | struct event_counter *tmp = all_counters; | |
416 | ||
417 | all_counters = NULL; | |
418 | kfree(tmp); | |
419 | ||
420 | if (counter_attrs) { | |
421 | int i; | |
422 | ||
423 | for (i = 0; i < num_gpes; i++) | |
424 | kfree(counter_attrs[i].attr.name); | |
425 | ||
426 | kfree(counter_attrs); | |
427 | } | |
428 | kfree(all_attrs); | |
429 | ||
430 | return; | |
431 | } | |
432 | ||
433 | void acpi_os_gpe_count(u32 gpe_number) | |
434 | { | |
435 | acpi_gpe_count++; | |
436 | ||
437 | if (!all_counters) | |
438 | return; | |
439 | ||
440 | if (gpe_number < num_gpes) | |
441 | all_counters[gpe_number].count++; | |
442 | else | |
443 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + | |
444 | COUNT_ERROR].count++; | |
445 | ||
446 | return; | |
447 | } | |
448 | ||
449 | void acpi_os_fixed_event_count(u32 event_number) | |
450 | { | |
451 | if (!all_counters) | |
452 | return; | |
453 | ||
454 | if (event_number < ACPI_NUM_FIXED_EVENTS) | |
455 | all_counters[num_gpes + event_number].count++; | |
456 | else | |
457 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + | |
458 | COUNT_ERROR].count++; | |
459 | ||
460 | return; | |
461 | } | |
462 | ||
463 | static int get_status(u32 index, acpi_event_status *status, | |
464 | acpi_handle *handle) | |
465 | { | |
466 | int result = 0; | |
467 | ||
468 | if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) | |
469 | goto end; | |
470 | ||
471 | if (index < num_gpes) { | |
472 | result = acpi_get_gpe_device(index, handle); | |
473 | if (result) { | |
474 | ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND, | |
475 | "Invalid GPE 0x%x\n", index)); | |
476 | goto end; | |
477 | } | |
478 | result = acpi_get_gpe_status(*handle, index, status); | |
479 | } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS)) | |
480 | result = acpi_get_event_status(index - num_gpes, status); | |
481 | ||
482 | end: | |
483 | return result; | |
484 | } | |
485 | ||
486 | static ssize_t counter_show(struct kobject *kobj, | |
487 | struct kobj_attribute *attr, char *buf) | |
488 | { | |
489 | int index = attr - counter_attrs; | |
490 | int size; | |
491 | acpi_handle handle; | |
492 | acpi_event_status status; | |
493 | int result = 0; | |
494 | ||
495 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count = | |
496 | acpi_irq_handled; | |
497 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count = | |
498 | acpi_irq_not_handled; | |
499 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count = | |
500 | acpi_gpe_count; | |
501 | size = sprintf(buf, "%8d", all_counters[index].count); | |
502 | ||
503 | /* "gpe_all" or "sci" */ | |
504 | if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) | |
505 | goto end; | |
506 | ||
507 | result = get_status(index, &status, &handle); | |
508 | if (result) | |
509 | goto end; | |
510 | ||
511 | if (!(status & ACPI_EVENT_FLAG_HANDLE)) | |
512 | size += sprintf(buf + size, " invalid"); | |
513 | else if (status & ACPI_EVENT_FLAG_ENABLED) | |
514 | size += sprintf(buf + size, " enabled"); | |
515 | else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED) | |
516 | size += sprintf(buf + size, " wake_enabled"); | |
517 | else | |
518 | size += sprintf(buf + size, " disabled"); | |
519 | ||
520 | end: | |
521 | size += sprintf(buf + size, "\n"); | |
522 | return result ? result : size; | |
523 | } | |
524 | ||
525 | /* | |
526 | * counter_set() sets the specified counter. | |
527 | * setting the total "sci" file to any value clears all counters. | |
528 | * enable/disable/clear a gpe/fixed event in user space. | |
529 | */ | |
530 | static ssize_t counter_set(struct kobject *kobj, | |
531 | struct kobj_attribute *attr, const char *buf, | |
532 | size_t size) | |
533 | { | |
534 | int index = attr - counter_attrs; | |
535 | acpi_event_status status; | |
536 | acpi_handle handle; | |
537 | int result = 0; | |
538 | ||
539 | if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) { | |
540 | int i; | |
541 | for (i = 0; i < num_counters; ++i) | |
542 | all_counters[i].count = 0; | |
543 | acpi_gpe_count = 0; | |
544 | acpi_irq_handled = 0; | |
545 | acpi_irq_not_handled = 0; | |
546 | goto end; | |
547 | } | |
548 | ||
549 | /* show the event status for both GPEs and Fixed Events */ | |
550 | result = get_status(index, &status, &handle); | |
551 | if (result) | |
552 | goto end; | |
553 | ||
554 | if (!(status & ACPI_EVENT_FLAG_HANDLE)) { | |
555 | printk(KERN_WARNING PREFIX | |
556 | "Can not change Invalid GPE/Fixed Event status\n"); | |
557 | return -EINVAL; | |
558 | } | |
559 | ||
560 | if (index < num_gpes) { | |
561 | if (!strcmp(buf, "disable\n") && | |
562 | (status & ACPI_EVENT_FLAG_ENABLED)) | |
563 | result = acpi_disable_gpe(handle, index); | |
564 | else if (!strcmp(buf, "enable\n") && | |
565 | !(status & ACPI_EVENT_FLAG_ENABLED)) | |
566 | result = acpi_enable_gpe(handle, index); | |
567 | else if (!strcmp(buf, "clear\n") && | |
568 | (status & ACPI_EVENT_FLAG_SET)) | |
569 | result = acpi_clear_gpe(handle, index); | |
570 | else | |
571 | all_counters[index].count = strtoul(buf, NULL, 0); | |
572 | } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) { | |
573 | int event = index - num_gpes; | |
574 | if (!strcmp(buf, "disable\n") && | |
575 | (status & ACPI_EVENT_FLAG_ENABLED)) | |
576 | result = acpi_disable_event(event, ACPI_NOT_ISR); | |
577 | else if (!strcmp(buf, "enable\n") && | |
578 | !(status & ACPI_EVENT_FLAG_ENABLED)) | |
579 | result = acpi_enable_event(event, ACPI_NOT_ISR); | |
580 | else if (!strcmp(buf, "clear\n") && | |
581 | (status & ACPI_EVENT_FLAG_SET)) | |
582 | result = acpi_clear_event(event); | |
583 | else | |
584 | all_counters[index].count = strtoul(buf, NULL, 0); | |
585 | } else | |
586 | all_counters[index].count = strtoul(buf, NULL, 0); | |
587 | ||
588 | if (ACPI_FAILURE(result)) | |
589 | result = -EINVAL; | |
590 | end: | |
591 | return result ? result : size; | |
592 | } | |
593 | ||
594 | void acpi_irq_stats_init(void) | |
595 | { | |
596 | int i; | |
597 | ||
598 | if (all_counters) | |
599 | return; | |
600 | ||
601 | num_gpes = acpi_current_gpe_count; | |
602 | num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA; | |
603 | ||
604 | all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1), | |
605 | GFP_KERNEL); | |
606 | if (all_attrs == NULL) | |
607 | return; | |
608 | ||
609 | all_counters = kzalloc(sizeof(struct event_counter) * (num_counters), | |
610 | GFP_KERNEL); | |
611 | if (all_counters == NULL) | |
612 | goto fail; | |
613 | ||
614 | counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters), | |
615 | GFP_KERNEL); | |
616 | if (counter_attrs == NULL) | |
617 | goto fail; | |
618 | ||
619 | for (i = 0; i < num_counters; ++i) { | |
620 | char buffer[12]; | |
621 | char *name; | |
622 | ||
623 | if (i < num_gpes) | |
624 | sprintf(buffer, "gpe%02X", i); | |
625 | else if (i == num_gpes + ACPI_EVENT_PMTIMER) | |
626 | sprintf(buffer, "ff_pmtimer"); | |
627 | else if (i == num_gpes + ACPI_EVENT_GLOBAL) | |
628 | sprintf(buffer, "ff_gbl_lock"); | |
629 | else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON) | |
630 | sprintf(buffer, "ff_pwr_btn"); | |
631 | else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON) | |
632 | sprintf(buffer, "ff_slp_btn"); | |
633 | else if (i == num_gpes + ACPI_EVENT_RTC) | |
634 | sprintf(buffer, "ff_rt_clk"); | |
635 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE) | |
636 | sprintf(buffer, "gpe_all"); | |
637 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) | |
638 | sprintf(buffer, "sci"); | |
639 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT) | |
640 | sprintf(buffer, "sci_not"); | |
641 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR) | |
642 | sprintf(buffer, "error"); | |
643 | else | |
644 | sprintf(buffer, "bug%02X", i); | |
645 | ||
646 | name = kzalloc(strlen(buffer) + 1, GFP_KERNEL); | |
647 | if (name == NULL) | |
648 | goto fail; | |
649 | strncpy(name, buffer, strlen(buffer) + 1); | |
650 | ||
651 | sysfs_attr_init(&counter_attrs[i].attr); | |
652 | counter_attrs[i].attr.name = name; | |
653 | counter_attrs[i].attr.mode = 0644; | |
654 | counter_attrs[i].show = counter_show; | |
655 | counter_attrs[i].store = counter_set; | |
656 | ||
657 | all_attrs[i] = &counter_attrs[i].attr; | |
658 | } | |
659 | ||
660 | interrupt_stats_attr_group.attrs = all_attrs; | |
661 | if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group)) | |
662 | return; | |
663 | ||
664 | fail: | |
665 | delete_gpe_attr_array(); | |
666 | return; | |
667 | } | |
668 | ||
669 | static void __exit interrupt_stats_exit(void) | |
670 | { | |
671 | sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group); | |
672 | ||
673 | delete_gpe_attr_array(); | |
674 | ||
675 | return; | |
676 | } | |
677 | ||
678 | int __init acpi_sysfs_init(void) | |
679 | { | |
680 | int result; | |
681 | ||
682 | result = acpi_tables_sysfs_init(); | |
683 | ||
684 | return result; | |
685 | } |