Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * acpi_system.c - ACPI System Driver ($Revision: 63 $) |
| 3 | * |
| 4 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
| 5 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
| 6 | * |
| 7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or (at |
| 12 | * your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 22 | * |
| 23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 24 | */ |
| 25 | |
| 26 | #include <linux/proc_fs.h> |
| 27 | #include <linux/seq_file.h> |
| 28 | #include <linux/init.h> |
Akinobu Mita | e108526e | 2008-07-23 21:26:44 -0700 | [diff] [blame] | 29 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <asm/uaccess.h> |
| 31 | |
| 32 | #include <acpi/acpi_drivers.h> |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #define _COMPONENT ACPI_SYSTEM_COMPONENT |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 35 | ACPI_MODULE_NAME("system"); |
Zhang Rui | 5bb730f | 2007-01-29 11:02:42 +0800 | [diff] [blame] | 36 | #ifdef MODULE_PARAM_PREFIX |
| 37 | #undef MODULE_PARAM_PREFIX |
| 38 | #endif |
| 39 | #define MODULE_PARAM_PREFIX "acpi." |
| 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #define ACPI_SYSTEM_CLASS "system" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #define ACPI_SYSTEM_DEVICE_NAME "System" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 44 | u32 acpi_irq_handled; |
| 45 | |
Zhang Rui | 5bb730f | 2007-01-29 11:02:42 +0800 | [diff] [blame] | 46 | /* |
| 47 | * Make ACPICA version work as module param |
| 48 | */ |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 49 | static int param_get_acpica_version(char *buffer, struct kernel_param *kp) |
| 50 | { |
Zhang Rui | 5bb730f | 2007-01-29 11:02:42 +0800 | [diff] [blame] | 51 | int result; |
| 52 | |
| 53 | result = sprintf(buffer, "%x", ACPI_CA_VERSION); |
| 54 | |
| 55 | return result; |
| 56 | } |
| 57 | |
| 58 | module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444); |
| 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | /* -------------------------------------------------------------------------- |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 61 | FS Interface (/sys) |
| 62 | -------------------------------------------------------------------------- */ |
| 63 | static LIST_HEAD(acpi_table_attr_list); |
Greg Kroah-Hartman | a77aa28 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 64 | static struct kobject *tables_kobj; |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 65 | |
| 66 | struct acpi_table_attr { |
| 67 | struct bin_attribute attr; |
| 68 | char name[8]; |
| 69 | int instance; |
| 70 | struct list_head node; |
| 71 | }; |
| 72 | |
| 73 | static ssize_t acpi_table_show(struct kobject *kobj, |
| 74 | struct bin_attribute *bin_attr, char *buf, |
| 75 | loff_t offset, size_t count) |
| 76 | { |
| 77 | struct acpi_table_attr *table_attr = |
| 78 | container_of(bin_attr, struct acpi_table_attr, attr); |
| 79 | struct acpi_table_header *table_header = NULL; |
| 80 | acpi_status status; |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame^] | 81 | char name[ACPI_NAME_SIZE]; |
| 82 | |
| 83 | if (strncmp(table_attr->name, "NULL", 4)) |
| 84 | memcpy(name, table_attr->name, ACPI_NAME_SIZE); |
| 85 | else |
| 86 | memcpy(name, "\0\0\0\0", 4); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 87 | |
| 88 | status = |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame^] | 89 | acpi_get_table(name, table_attr->instance, |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 90 | &table_header); |
| 91 | if (ACPI_FAILURE(status)) |
| 92 | return -ENODEV; |
| 93 | |
Akinobu Mita | 46a21e4 | 2008-06-09 16:22:26 -0700 | [diff] [blame] | 94 | return memory_read_from_buffer(buf, count, &offset, |
| 95 | table_header, table_header->length); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | static void acpi_table_attr_init(struct acpi_table_attr *table_attr, |
| 99 | struct acpi_table_header *table_header) |
| 100 | { |
| 101 | struct acpi_table_header *header = NULL; |
| 102 | struct acpi_table_attr *attr = NULL; |
| 103 | |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame^] | 104 | if (table_header->signature[0] != '\0') |
| 105 | memcpy(table_attr->name, table_header->signature, |
| 106 | ACPI_NAME_SIZE); |
| 107 | else |
| 108 | memcpy(table_attr->name, "NULL", 4); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 109 | |
| 110 | list_for_each_entry(attr, &acpi_table_attr_list, node) { |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame^] | 111 | if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE)) |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 112 | if (table_attr->instance < attr->instance) |
| 113 | table_attr->instance = attr->instance; |
| 114 | } |
| 115 | table_attr->instance++; |
| 116 | |
| 117 | if (table_attr->instance > 1 || (table_attr->instance == 1 && |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame^] | 118 | !acpi_get_table |
| 119 | (table_header->signature, 2, &header))) |
| 120 | sprintf(table_attr->name + ACPI_NAME_SIZE, "%d", |
| 121 | table_attr->instance); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 122 | |
| 123 | table_attr->attr.size = 0; |
| 124 | table_attr->attr.read = acpi_table_show; |
| 125 | table_attr->attr.attr.name = table_attr->name; |
| 126 | table_attr->attr.attr.mode = 0444; |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 127 | |
| 128 | return; |
| 129 | } |
| 130 | |
| 131 | static int acpi_system_sysfs_init(void) |
| 132 | { |
| 133 | struct acpi_table_attr *table_attr; |
| 134 | struct acpi_table_header *table_header = NULL; |
| 135 | int table_index = 0; |
| 136 | int result; |
| 137 | |
Greg Kroah-Hartman | a77aa28 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 138 | tables_kobj = kobject_create_and_add("tables", acpi_kobj); |
| 139 | if (!tables_kobj) |
| 140 | return -ENOMEM; |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 141 | |
| 142 | do { |
| 143 | result = acpi_get_table_by_index(table_index, &table_header); |
| 144 | if (!result) { |
| 145 | table_index++; |
| 146 | table_attr = NULL; |
| 147 | table_attr = |
| 148 | kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); |
| 149 | if (!table_attr) |
| 150 | return -ENOMEM; |
| 151 | |
| 152 | acpi_table_attr_init(table_attr, table_header); |
| 153 | result = |
Greg Kroah-Hartman | a77aa28 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 154 | sysfs_create_bin_file(tables_kobj, |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 155 | &table_attr->attr); |
| 156 | if (result) { |
| 157 | kfree(table_attr); |
| 158 | return result; |
| 159 | } else |
| 160 | list_add_tail(&table_attr->node, |
| 161 | &acpi_table_attr_list); |
| 162 | } |
| 163 | } while (!result); |
Greg Kroah-Hartman | a77aa28 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 164 | kobject_uevent(tables_kobj, KOBJ_ADD); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 165 | |
| 166 | return 0; |
| 167 | } |
| 168 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 169 | /* |
| 170 | * Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/ |
| 171 | * See Documentation/ABI/testing/sysfs-firmware-acpi |
| 172 | */ |
| 173 | |
| 174 | #define COUNT_GPE 0 |
| 175 | #define COUNT_SCI 1 /* acpi_irq_handled */ |
| 176 | #define COUNT_ERROR 2 /* other */ |
| 177 | #define NUM_COUNTERS_EXTRA 3 |
| 178 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 179 | #define ACPI_EVENT_VALID 0x01 |
| 180 | struct event_counter { |
| 181 | u32 count; |
| 182 | u32 flags; |
| 183 | }; |
| 184 | |
| 185 | static struct event_counter *all_counters; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 186 | static u32 num_gpes; |
| 187 | static u32 num_counters; |
| 188 | static struct attribute **all_attrs; |
| 189 | static u32 acpi_gpe_count; |
| 190 | |
| 191 | static struct attribute_group interrupt_stats_attr_group = { |
| 192 | .name = "interrupts", |
| 193 | }; |
| 194 | static struct kobj_attribute *counter_attrs; |
| 195 | |
| 196 | static int count_num_gpes(void) |
| 197 | { |
| 198 | int count = 0; |
| 199 | struct acpi_gpe_xrupt_info *gpe_xrupt_info; |
| 200 | struct acpi_gpe_block_info *gpe_block; |
| 201 | acpi_cpu_flags flags; |
| 202 | |
| 203 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
| 204 | |
| 205 | gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head; |
| 206 | while (gpe_xrupt_info) { |
| 207 | gpe_block = gpe_xrupt_info->gpe_block_list_head; |
| 208 | while (gpe_block) { |
| 209 | count += gpe_block->register_count * |
| 210 | ACPI_GPE_REGISTER_WIDTH; |
| 211 | gpe_block = gpe_block->next; |
| 212 | } |
| 213 | gpe_xrupt_info = gpe_xrupt_info->next; |
| 214 | } |
| 215 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
| 216 | |
| 217 | return count; |
| 218 | } |
| 219 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 220 | static int get_gpe_device(int index, acpi_handle *handle) |
| 221 | { |
| 222 | struct acpi_gpe_xrupt_info *gpe_xrupt_info; |
| 223 | struct acpi_gpe_block_info *gpe_block; |
| 224 | acpi_cpu_flags flags; |
| 225 | struct acpi_namespace_node *node; |
| 226 | |
| 227 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
| 228 | |
| 229 | gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head; |
| 230 | while (gpe_xrupt_info) { |
| 231 | gpe_block = gpe_xrupt_info->gpe_block_list_head; |
| 232 | node = gpe_block->node; |
| 233 | while (gpe_block) { |
| 234 | index -= gpe_block->register_count * |
| 235 | ACPI_GPE_REGISTER_WIDTH; |
| 236 | if (index < 0) { |
| 237 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
| 238 | /* return NULL if it's FADT GPE */ |
| 239 | if (node->type != ACPI_TYPE_DEVICE) |
| 240 | *handle = NULL; |
| 241 | else |
| 242 | *handle = node; |
| 243 | return 0; |
| 244 | } |
| 245 | node = gpe_block->node; |
| 246 | gpe_block = gpe_block->next; |
| 247 | } |
| 248 | gpe_xrupt_info = gpe_xrupt_info->next; |
| 249 | } |
| 250 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
| 251 | |
| 252 | return -ENODEV; |
| 253 | } |
| 254 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 255 | static void delete_gpe_attr_array(void) |
| 256 | { |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 257 | struct event_counter *tmp = all_counters; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 258 | |
| 259 | all_counters = NULL; |
| 260 | kfree(tmp); |
| 261 | |
| 262 | if (counter_attrs) { |
| 263 | int i; |
| 264 | |
| 265 | for (i = 0; i < num_gpes; i++) |
| 266 | kfree(counter_attrs[i].attr.name); |
| 267 | |
| 268 | kfree(counter_attrs); |
| 269 | } |
| 270 | kfree(all_attrs); |
| 271 | |
| 272 | return; |
| 273 | } |
| 274 | |
| 275 | void acpi_os_gpe_count(u32 gpe_number) |
| 276 | { |
| 277 | acpi_gpe_count++; |
| 278 | |
| 279 | if (!all_counters) |
| 280 | return; |
| 281 | |
| 282 | if (gpe_number < num_gpes) |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 283 | all_counters[gpe_number].count++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 284 | else |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 285 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]. |
| 286 | count++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 287 | |
| 288 | return; |
| 289 | } |
| 290 | |
| 291 | void acpi_os_fixed_event_count(u32 event_number) |
| 292 | { |
| 293 | if (!all_counters) |
| 294 | return; |
| 295 | |
| 296 | if (event_number < ACPI_NUM_FIXED_EVENTS) |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 297 | all_counters[num_gpes + event_number].count++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 298 | else |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 299 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]. |
| 300 | count++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 301 | |
| 302 | return; |
| 303 | } |
| 304 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 305 | static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle) |
| 306 | { |
| 307 | int result = 0; |
| 308 | |
| 309 | if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) |
| 310 | goto end; |
| 311 | |
| 312 | if (index < num_gpes) { |
| 313 | result = get_gpe_device(index, handle); |
| 314 | if (result) { |
| 315 | ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND, |
| 316 | "Invalid GPE 0x%x\n", index)); |
| 317 | goto end; |
| 318 | } |
| 319 | result = acpi_get_gpe_status(*handle, index, |
| 320 | ACPI_NOT_ISR, status); |
| 321 | } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS)) |
| 322 | result = acpi_get_event_status(index - num_gpes, status); |
| 323 | |
| 324 | /* |
| 325 | * sleep/power button GPE/Fixed Event is enabled after acpi_system_init, |
| 326 | * check the status at runtime and mark it as valid once it's enabled |
| 327 | */ |
| 328 | if (!result && (*status & ACPI_EVENT_FLAG_ENABLED)) |
| 329 | all_counters[index].flags |= ACPI_EVENT_VALID; |
| 330 | end: |
| 331 | return result; |
| 332 | } |
| 333 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 334 | static ssize_t counter_show(struct kobject *kobj, |
| 335 | struct kobj_attribute *attr, char *buf) |
| 336 | { |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 337 | int index = attr - counter_attrs; |
| 338 | int size; |
| 339 | acpi_handle handle; |
| 340 | acpi_event_status status; |
| 341 | int result = 0; |
| 342 | |
| 343 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count = |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 344 | acpi_irq_handled; |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 345 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count = |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 346 | acpi_gpe_count; |
| 347 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 348 | size = sprintf(buf, "%8d", all_counters[index].count); |
| 349 | |
| 350 | /* "gpe_all" or "sci" */ |
| 351 | if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) |
| 352 | goto end; |
| 353 | |
| 354 | result = get_status(index, &status, &handle); |
| 355 | if (result) |
| 356 | goto end; |
| 357 | |
| 358 | if (!(all_counters[index].flags & ACPI_EVENT_VALID)) |
| 359 | size += sprintf(buf + size, " invalid"); |
| 360 | else if (status & ACPI_EVENT_FLAG_ENABLED) |
| 361 | size += sprintf(buf + size, " enable"); |
| 362 | else |
| 363 | size += sprintf(buf + size, " disable"); |
| 364 | |
| 365 | end: |
| 366 | size += sprintf(buf + size, "\n"); |
| 367 | return result ? result : size; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | /* |
| 371 | * counter_set() sets the specified counter. |
| 372 | * setting the total "sci" file to any value clears all counters. |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 373 | * enable/disable/clear a gpe/fixed event in user space. |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 374 | */ |
| 375 | static ssize_t counter_set(struct kobject *kobj, |
| 376 | struct kobj_attribute *attr, const char *buf, size_t size) |
| 377 | { |
| 378 | int index = attr - counter_attrs; |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 379 | acpi_event_status status; |
| 380 | acpi_handle handle; |
| 381 | int result = 0; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 382 | |
| 383 | if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) { |
| 384 | int i; |
| 385 | for (i = 0; i < num_counters; ++i) |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 386 | all_counters[i].count = 0; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 387 | acpi_gpe_count = 0; |
| 388 | acpi_irq_handled = 0; |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 389 | goto end; |
| 390 | } |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 391 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 392 | /* show the event status for both GPEs and Fixed Events */ |
| 393 | result = get_status(index, &status, &handle); |
| 394 | if (result) |
| 395 | goto end; |
| 396 | |
| 397 | if (!(all_counters[index].flags & ACPI_EVENT_VALID)) { |
Lin Ming | 55ac9a0 | 2008-09-28 14:51:56 +0800 | [diff] [blame] | 398 | printk(KERN_WARNING PREFIX |
| 399 | "Can not change Invalid GPE/Fixed Event status\n"); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 400 | return -EINVAL; |
| 401 | } |
| 402 | |
| 403 | if (index < num_gpes) { |
| 404 | if (!strcmp(buf, "disable\n") && |
| 405 | (status & ACPI_EVENT_FLAG_ENABLED)) |
| 406 | result = acpi_disable_gpe(handle, index, ACPI_NOT_ISR); |
| 407 | else if (!strcmp(buf, "enable\n") && |
| 408 | !(status & ACPI_EVENT_FLAG_ENABLED)) |
| 409 | result = acpi_enable_gpe(handle, index, ACPI_NOT_ISR); |
| 410 | else if (!strcmp(buf, "clear\n") && |
| 411 | (status & ACPI_EVENT_FLAG_SET)) |
| 412 | result = acpi_clear_gpe(handle, index, ACPI_NOT_ISR); |
| 413 | else |
| 414 | all_counters[index].count = strtoul(buf, NULL, 0); |
| 415 | } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) { |
| 416 | int event = index - num_gpes; |
| 417 | if (!strcmp(buf, "disable\n") && |
| 418 | (status & ACPI_EVENT_FLAG_ENABLED)) |
| 419 | result = acpi_disable_event(event, ACPI_NOT_ISR); |
| 420 | else if (!strcmp(buf, "enable\n") && |
| 421 | !(status & ACPI_EVENT_FLAG_ENABLED)) |
| 422 | result = acpi_enable_event(event, ACPI_NOT_ISR); |
| 423 | else if (!strcmp(buf, "clear\n") && |
| 424 | (status & ACPI_EVENT_FLAG_SET)) |
| 425 | result = acpi_clear_event(event); |
| 426 | else |
| 427 | all_counters[index].count = strtoul(buf, NULL, 0); |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 428 | } else |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 429 | all_counters[index].count = strtoul(buf, NULL, 0); |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 430 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 431 | if (ACPI_FAILURE(result)) |
| 432 | result = -EINVAL; |
| 433 | end: |
| 434 | return result ? result : size; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 435 | } |
| 436 | |
| 437 | void acpi_irq_stats_init(void) |
| 438 | { |
| 439 | int i; |
| 440 | |
| 441 | if (all_counters) |
| 442 | return; |
| 443 | |
| 444 | num_gpes = count_num_gpes(); |
| 445 | num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA; |
| 446 | |
| 447 | all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1), |
| 448 | GFP_KERNEL); |
| 449 | if (all_attrs == NULL) |
| 450 | return; |
| 451 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 452 | all_counters = kzalloc(sizeof(struct event_counter) * (num_counters), |
| 453 | GFP_KERNEL); |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 454 | if (all_counters == NULL) |
| 455 | goto fail; |
| 456 | |
| 457 | counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters), |
| 458 | GFP_KERNEL); |
| 459 | if (counter_attrs == NULL) |
| 460 | goto fail; |
| 461 | |
| 462 | for (i = 0; i < num_counters; ++i) { |
Johann Felix Soden | c8dc9de | 2008-03-11 16:44:26 +0100 | [diff] [blame] | 463 | char buffer[12]; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 464 | char *name; |
| 465 | |
| 466 | if (i < num_gpes) |
| 467 | sprintf(buffer, "gpe%02X", i); |
| 468 | else if (i == num_gpes + ACPI_EVENT_PMTIMER) |
| 469 | sprintf(buffer, "ff_pmtimer"); |
| 470 | else if (i == num_gpes + ACPI_EVENT_GLOBAL) |
| 471 | sprintf(buffer, "ff_gbl_lock"); |
| 472 | else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON) |
| 473 | sprintf(buffer, "ff_pwr_btn"); |
| 474 | else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON) |
| 475 | sprintf(buffer, "ff_slp_btn"); |
| 476 | else if (i == num_gpes + ACPI_EVENT_RTC) |
| 477 | sprintf(buffer, "ff_rt_clk"); |
| 478 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE) |
| 479 | sprintf(buffer, "gpe_all"); |
| 480 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) |
| 481 | sprintf(buffer, "sci"); |
| 482 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR) |
| 483 | sprintf(buffer, "error"); |
| 484 | else |
| 485 | sprintf(buffer, "bug%02X", i); |
| 486 | |
| 487 | name = kzalloc(strlen(buffer) + 1, GFP_KERNEL); |
| 488 | if (name == NULL) |
| 489 | goto fail; |
| 490 | strncpy(name, buffer, strlen(buffer) + 1); |
| 491 | |
| 492 | counter_attrs[i].attr.name = name; |
| 493 | counter_attrs[i].attr.mode = 0644; |
| 494 | counter_attrs[i].show = counter_show; |
| 495 | counter_attrs[i].store = counter_set; |
| 496 | |
| 497 | all_attrs[i] = &counter_attrs[i].attr; |
| 498 | } |
| 499 | |
| 500 | interrupt_stats_attr_group.attrs = all_attrs; |
Len Brown | b714315 | 2008-02-07 04:24:01 -0500 | [diff] [blame] | 501 | if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group)) |
| 502 | return; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 503 | |
| 504 | fail: |
| 505 | delete_gpe_attr_array(); |
| 506 | return; |
| 507 | } |
| 508 | |
| 509 | static void __exit interrupt_stats_exit(void) |
| 510 | { |
| 511 | sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group); |
| 512 | |
| 513 | delete_gpe_attr_array(); |
| 514 | |
| 515 | return; |
| 516 | } |
| 517 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 518 | /* -------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | FS Interface (/proc) |
| 520 | -------------------------------------------------------------------------- */ |
Zhang Rui | 5bb730f | 2007-01-29 11:02:42 +0800 | [diff] [blame] | 521 | #ifdef CONFIG_ACPI_PROCFS |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 522 | #define ACPI_SYSTEM_FILE_INFO "info" |
| 523 | #define ACPI_SYSTEM_FILE_EVENT "event" |
| 524 | #define ACPI_SYSTEM_FILE_DSDT "dsdt" |
| 525 | #define ACPI_SYSTEM_FILE_FADT "fadt" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 527 | static int acpi_system_read_info(struct seq_file *seq, void *offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
| 530 | seq_printf(seq, "version: %x\n", ACPI_CA_VERSION); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 531 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | } |
| 533 | |
| 534 | static int acpi_system_info_open_fs(struct inode *inode, struct file *file) |
| 535 | { |
| 536 | return single_open(file, acpi_system_read_info, PDE(inode)->data); |
| 537 | } |
| 538 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 539 | static const struct file_operations acpi_system_info_ops = { |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 540 | .owner = THIS_MODULE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 541 | .open = acpi_system_info_open_fs, |
| 542 | .read = seq_read, |
| 543 | .llseek = seq_lseek, |
| 544 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | }; |
| 546 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 547 | static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t, |
| 548 | loff_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 550 | static const struct file_operations acpi_system_dsdt_ops = { |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 551 | .owner = THIS_MODULE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 552 | .read = acpi_system_read_dsdt, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | }; |
| 554 | |
| 555 | static ssize_t |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 556 | acpi_system_read_dsdt(struct file *file, |
| 557 | char __user * buffer, size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 559 | acpi_status status = AE_OK; |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 560 | struct acpi_table_header *dsdt = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 561 | ssize_t res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 563 | status = acpi_get_table(ACPI_SIG_DSDT, 1, &dsdt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 565 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 567 | res = simple_read_from_buffer(buffer, count, ppos, dsdt, dsdt->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 569 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | } |
| 571 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 572 | static ssize_t acpi_system_read_fadt(struct file *, char __user *, size_t, |
| 573 | loff_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 575 | static const struct file_operations acpi_system_fadt_ops = { |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 576 | .owner = THIS_MODULE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 577 | .read = acpi_system_read_fadt, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | }; |
| 579 | |
| 580 | static ssize_t |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 581 | acpi_system_read_fadt(struct file *file, |
| 582 | char __user * buffer, size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 584 | acpi_status status = AE_OK; |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 585 | struct acpi_table_header *fadt = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 586 | ssize_t res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 588 | status = acpi_get_table(ACPI_SIG_FADT, 1, &fadt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 590 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 592 | res = simple_read_from_buffer(buffer, count, ppos, fadt, fadt->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 594 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | } |
| 596 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 597 | static int acpi_system_procfs_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 599 | struct proc_dir_entry *entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | int error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | /* 'info' [R] */ |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 603 | entry = proc_create(ACPI_SYSTEM_FILE_INFO, S_IRUGO, acpi_root_dir, |
| 604 | &acpi_system_info_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | if (!entry) |
| 606 | goto Error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | |
| 608 | /* 'dsdt' [R] */ |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 609 | entry = proc_create(ACPI_SYSTEM_FILE_DSDT, S_IRUSR, acpi_root_dir, |
| 610 | &acpi_system_dsdt_ops); |
| 611 | if (!entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | goto Error; |
| 613 | |
| 614 | /* 'fadt' [R] */ |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 615 | entry = proc_create(ACPI_SYSTEM_FILE_FADT, S_IRUSR, acpi_root_dir, |
| 616 | &acpi_system_fadt_ops); |
| 617 | if (!entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | goto Error; |
| 619 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 620 | Done: |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 621 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 623 | Error: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir); |
| 625 | remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir); |
| 626 | remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir); |
| 627 | |
| 628 | error = -EFAULT; |
| 629 | goto Done; |
| 630 | } |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 631 | #else |
| 632 | static int acpi_system_procfs_init(void) |
| 633 | { |
| 634 | return 0; |
| 635 | } |
| 636 | #endif |
| 637 | |
| 638 | static int __init acpi_system_init(void) |
| 639 | { |
| 640 | int result = 0; |
| 641 | |
| 642 | if (acpi_disabled) |
| 643 | return 0; |
| 644 | |
| 645 | result = acpi_system_procfs_init(); |
| 646 | if (result) |
| 647 | return result; |
| 648 | |
| 649 | result = acpi_system_sysfs_init(); |
| 650 | |
| 651 | return result; |
| 652 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | subsys_initcall(acpi_system_init); |