Commit | Line | Data |
---|---|---|
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 |
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 | ||
ec652b35 | 105 | static 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 | 133 | static 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 | 154 | static 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 | 159 | static const struct kernel_param_ops param_ops_debug_level = { |
ec652b35 ZR |
160 | .set = param_set_uint, |
161 | .get = param_get_debug_level, | |
162 | }; | |
163 | ||
164 | module_param_cb(debug_layer, ¶m_ops_debug_layer, &acpi_dbg_layer, 0644); | |
165 | module_param_cb(debug_level, ¶m_ops_debug_level, &acpi_dbg_level, 0644); | |
1c8fce27 ZR |
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 | ||
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; | |
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 | ||
aecad432 TR |
225 | |
226 | /* /sys/modules/acpi/parameters/aml_debug_output */ | |
227 | ||
228 | module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object, | |
481c1381 | 229 | byte, 0644); |
aecad432 TR |
230 | MODULE_PARM_DESC(aml_debug_output, |
231 | "To enable/disable the ACPI Debug Object output."); | |
232 | ||
1c8fce27 ZR |
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; | |
3f8055c3 | 254 | static struct kobject *hotplug_kobj; |
1c8fce27 ZR |
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 | ||
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 | ||
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; | |
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 |
397 | err_dynamic_tables: |
398 | kobject_put(tables_kobj); | |
399 | err: | |
400 | return -ENOMEM; | |
401 | } | |
402 | ||
403 | /* | |
404 | * Detailed ACPI IRQ counters: | |
405 | * /sys/firmware/acpi/interrupts/ | |
406 | */ | |
407 | ||
408 | u32 acpi_irq_handled; | |
409 | u32 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 | ||
417 | struct event_counter { | |
418 | u32 count; | |
419 | u32 flags; | |
420 | }; | |
421 | ||
422 | static struct event_counter *all_counters; | |
423 | static u32 num_gpes; | |
424 | static u32 num_counters; | |
425 | static struct attribute **all_attrs; | |
426 | static u32 acpi_gpe_count; | |
427 | ||
428 | static struct attribute_group interrupt_stats_attr_group = { | |
429 | .name = "interrupts", | |
430 | }; | |
431 | ||
432 | static struct kobj_attribute *counter_attrs; | |
433 | ||
434 | static 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 | 454 | static 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 | 470 | static 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 | 484 | static 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 |
494 | static 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 | ||
513 | end: | |
514 | return result; | |
515 | } | |
516 | ||
517 | static 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 | ||
551 | end: | |
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 | */ | |
561 | static 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; | |
626 | end: | |
627 | return result ? result : size; | |
628 | } | |
629 | ||
630 | void 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 | ||
704 | fail: | |
705 | delete_gpe_attr_array(); | |
706 | return; | |
707 | } | |
708 | ||
709 | static 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 |
718 | static ssize_t |
719 | acpi_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 | ||
725 | static const struct device_attribute pm_profile_attr = | |
726 | __ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL); | |
727 | ||
3f8055c3 RW |
728 | static 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 | ||
736 | static 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 | ||
750 | static struct kobj_attribute hotplug_enabled_attr = | |
751 | __ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show, | |
752 | hotplug_enabled_store); | |
753 | ||
754 | static struct attribute *hotplug_profile_attrs[] = { | |
755 | &hotplug_enabled_attr.attr, | |
756 | NULL | |
757 | }; | |
758 | ||
b09753ec | 759 | static struct kobj_type acpi_hotplug_profile_ktype = { |
3f8055c3 RW |
760 | .sysfs_ops = &kobj_sysfs_ops, |
761 | .default_attrs = hotplug_profile_attrs, | |
762 | }; | |
763 | ||
764 | void 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 |
784 | static 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 | ||
790 | static 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 | ||
807 | static 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 |
811 | int __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 | } |