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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/init.h> |
Akinobu Mita | e108526e | 2008-07-23 21:26:44 -0700 | [diff] [blame] | 30 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <asm/uaccess.h> |
| 32 | |
| 33 | #include <acpi/acpi_drivers.h> |
| 34 | |
Len Brown | a192a95 | 2009-07-28 16:45:54 -0400 | [diff] [blame] | 35 | #define PREFIX "ACPI: " |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #define _COMPONENT ACPI_SYSTEM_COMPONENT |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 38 | ACPI_MODULE_NAME("system"); |
Zhang Rui | 5bb730f | 2007-01-29 11:02:42 +0800 | [diff] [blame] | 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #define ACPI_SYSTEM_CLASS "system" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #define ACPI_SYSTEM_DEVICE_NAME "System" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 43 | u32 acpi_irq_handled; |
Len Brown | 88bea18 | 2009-04-21 00:35:47 -0400 | [diff] [blame] | 44 | u32 acpi_irq_not_handled; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 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 | 4658e4e | 2009-02-26 11:27:23 +0800 | [diff] [blame] | 65 | static struct kobject *dynamic_tables_kobj; |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 66 | |
| 67 | struct acpi_table_attr { |
| 68 | struct bin_attribute attr; |
| 69 | char name[8]; |
| 70 | int instance; |
| 71 | struct list_head node; |
| 72 | }; |
| 73 | |
Chris Wright | 2c3c8be | 2010-05-12 18:28:57 -0700 | [diff] [blame] | 74 | static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj, |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 75 | struct bin_attribute *bin_attr, char *buf, |
| 76 | loff_t offset, size_t count) |
| 77 | { |
| 78 | struct acpi_table_attr *table_attr = |
| 79 | container_of(bin_attr, struct acpi_table_attr, attr); |
| 80 | struct acpi_table_header *table_header = NULL; |
| 81 | acpi_status status; |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame] | 82 | char name[ACPI_NAME_SIZE]; |
| 83 | |
| 84 | if (strncmp(table_attr->name, "NULL", 4)) |
| 85 | memcpy(name, table_attr->name, ACPI_NAME_SIZE); |
| 86 | else |
| 87 | memcpy(name, "\0\0\0\0", 4); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 88 | |
| 89 | status = |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame] | 90 | acpi_get_table(name, table_attr->instance, |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 91 | &table_header); |
| 92 | if (ACPI_FAILURE(status)) |
| 93 | return -ENODEV; |
| 94 | |
Akinobu Mita | 46a21e4 | 2008-06-09 16:22:26 -0700 | [diff] [blame] | 95 | return memory_read_from_buffer(buf, count, &offset, |
| 96 | table_header, table_header->length); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | static void acpi_table_attr_init(struct acpi_table_attr *table_attr, |
| 100 | struct acpi_table_header *table_header) |
| 101 | { |
| 102 | struct acpi_table_header *header = NULL; |
| 103 | struct acpi_table_attr *attr = NULL; |
| 104 | |
Eric W. Biederman | a07e415 | 2010-02-11 15:23:05 -0800 | [diff] [blame] | 105 | sysfs_attr_init(&table_attr->attr.attr); |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame] | 106 | if (table_header->signature[0] != '\0') |
| 107 | memcpy(table_attr->name, table_header->signature, |
| 108 | ACPI_NAME_SIZE); |
| 109 | else |
| 110 | memcpy(table_attr->name, "NULL", 4); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 111 | |
| 112 | list_for_each_entry(attr, &acpi_table_attr_list, node) { |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame] | 113 | if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE)) |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 114 | if (table_attr->instance < attr->instance) |
| 115 | table_attr->instance = attr->instance; |
| 116 | } |
| 117 | table_attr->instance++; |
| 118 | |
| 119 | if (table_attr->instance > 1 || (table_attr->instance == 1 && |
Peter Gruber | 4feba70 | 2008-10-27 23:59:36 -0400 | [diff] [blame] | 120 | !acpi_get_table |
| 121 | (table_header->signature, 2, &header))) |
| 122 | sprintf(table_attr->name + ACPI_NAME_SIZE, "%d", |
| 123 | table_attr->instance); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 124 | |
| 125 | table_attr->attr.size = 0; |
| 126 | table_attr->attr.read = acpi_table_show; |
| 127 | table_attr->attr.attr.name = table_attr->name; |
Len Brown | d0006f3 | 2009-07-30 16:00:53 -0400 | [diff] [blame] | 128 | table_attr->attr.attr.mode = 0400; |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 129 | |
| 130 | return; |
| 131 | } |
| 132 | |
Zhang Rui | 4658e4e | 2009-02-26 11:27:23 +0800 | [diff] [blame] | 133 | static acpi_status |
| 134 | acpi_sysfs_table_handler(u32 event, void *table, void *context) |
| 135 | { |
| 136 | struct acpi_table_attr *table_attr; |
| 137 | |
| 138 | switch (event) { |
| 139 | case ACPI_TABLE_EVENT_LOAD: |
| 140 | table_attr = |
| 141 | kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); |
| 142 | if (!table_attr) |
| 143 | return AE_NO_MEMORY; |
| 144 | |
| 145 | acpi_table_attr_init(table_attr, table); |
| 146 | if (sysfs_create_bin_file(dynamic_tables_kobj, |
| 147 | &table_attr->attr)) { |
| 148 | kfree(table_attr); |
| 149 | return AE_ERROR; |
| 150 | } else |
| 151 | list_add_tail(&table_attr->node, |
| 152 | &acpi_table_attr_list); |
| 153 | break; |
| 154 | case ACPI_TABLE_EVENT_UNLOAD: |
| 155 | /* |
| 156 | * we do not need to do anything right now |
| 157 | * because the table is not deleted from the |
| 158 | * global table list when unloading it. |
| 159 | */ |
| 160 | break; |
| 161 | default: |
| 162 | return AE_BAD_PARAMETER; |
| 163 | } |
| 164 | return AE_OK; |
| 165 | } |
| 166 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 167 | static int acpi_system_sysfs_init(void) |
| 168 | { |
| 169 | struct acpi_table_attr *table_attr; |
| 170 | struct acpi_table_header *table_header = NULL; |
| 171 | int table_index = 0; |
| 172 | int result; |
| 173 | |
Greg Kroah-Hartman | a77aa28 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 174 | tables_kobj = kobject_create_and_add("tables", acpi_kobj); |
| 175 | if (!tables_kobj) |
Zhang Rui | 4658e4e | 2009-02-26 11:27:23 +0800 | [diff] [blame] | 176 | goto err; |
| 177 | |
| 178 | dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj); |
| 179 | if (!dynamic_tables_kobj) |
| 180 | goto err_dynamic_tables; |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 181 | |
| 182 | do { |
| 183 | result = acpi_get_table_by_index(table_index, &table_header); |
| 184 | if (!result) { |
| 185 | table_index++; |
| 186 | table_attr = NULL; |
| 187 | table_attr = |
| 188 | kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); |
| 189 | if (!table_attr) |
| 190 | return -ENOMEM; |
| 191 | |
| 192 | acpi_table_attr_init(table_attr, table_header); |
| 193 | result = |
Greg Kroah-Hartman | a77aa28 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 194 | sysfs_create_bin_file(tables_kobj, |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 195 | &table_attr->attr); |
| 196 | if (result) { |
| 197 | kfree(table_attr); |
| 198 | return result; |
| 199 | } else |
| 200 | list_add_tail(&table_attr->node, |
| 201 | &acpi_table_attr_list); |
| 202 | } |
| 203 | } while (!result); |
Greg Kroah-Hartman | a77aa28 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 204 | kobject_uevent(tables_kobj, KOBJ_ADD); |
Zhang Rui | 4658e4e | 2009-02-26 11:27:23 +0800 | [diff] [blame] | 205 | kobject_uevent(dynamic_tables_kobj, KOBJ_ADD); |
| 206 | result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL); |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 207 | |
Zhang Rui | 4658e4e | 2009-02-26 11:27:23 +0800 | [diff] [blame] | 208 | return result == AE_OK ? 0 : -EINVAL; |
| 209 | err_dynamic_tables: |
| 210 | kobject_put(tables_kobj); |
| 211 | err: |
| 212 | return -ENOMEM; |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 213 | } |
| 214 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 215 | /* |
| 216 | * Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/ |
| 217 | * See Documentation/ABI/testing/sysfs-firmware-acpi |
| 218 | */ |
| 219 | |
| 220 | #define COUNT_GPE 0 |
| 221 | #define COUNT_SCI 1 /* acpi_irq_handled */ |
Len Brown | 88bea18 | 2009-04-21 00:35:47 -0400 | [diff] [blame] | 222 | #define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */ |
| 223 | #define COUNT_ERROR 3 /* other */ |
| 224 | #define NUM_COUNTERS_EXTRA 4 |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 225 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 226 | struct event_counter { |
| 227 | u32 count; |
| 228 | u32 flags; |
| 229 | }; |
| 230 | |
| 231 | static struct event_counter *all_counters; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 232 | static u32 num_gpes; |
| 233 | static u32 num_counters; |
| 234 | static struct attribute **all_attrs; |
| 235 | static u32 acpi_gpe_count; |
| 236 | |
| 237 | static struct attribute_group interrupt_stats_attr_group = { |
| 238 | .name = "interrupts", |
| 239 | }; |
| 240 | static struct kobj_attribute *counter_attrs; |
| 241 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 242 | static void delete_gpe_attr_array(void) |
| 243 | { |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 244 | struct event_counter *tmp = all_counters; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 245 | |
| 246 | all_counters = NULL; |
| 247 | kfree(tmp); |
| 248 | |
| 249 | if (counter_attrs) { |
| 250 | int i; |
| 251 | |
| 252 | for (i = 0; i < num_gpes; i++) |
| 253 | kfree(counter_attrs[i].attr.name); |
| 254 | |
| 255 | kfree(counter_attrs); |
| 256 | } |
| 257 | kfree(all_attrs); |
| 258 | |
| 259 | return; |
| 260 | } |
| 261 | |
| 262 | void acpi_os_gpe_count(u32 gpe_number) |
| 263 | { |
| 264 | acpi_gpe_count++; |
| 265 | |
| 266 | if (!all_counters) |
| 267 | return; |
| 268 | |
| 269 | if (gpe_number < num_gpes) |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 270 | all_counters[gpe_number].count++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 271 | else |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 272 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]. |
| 273 | count++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 274 | |
| 275 | return; |
| 276 | } |
| 277 | |
| 278 | void acpi_os_fixed_event_count(u32 event_number) |
| 279 | { |
| 280 | if (!all_counters) |
| 281 | return; |
| 282 | |
| 283 | if (event_number < ACPI_NUM_FIXED_EVENTS) |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 284 | all_counters[num_gpes + event_number].count++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 285 | else |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 286 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]. |
| 287 | count++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 288 | |
| 289 | return; |
| 290 | } |
| 291 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 292 | static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle) |
| 293 | { |
| 294 | int result = 0; |
| 295 | |
| 296 | if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) |
| 297 | goto end; |
| 298 | |
| 299 | if (index < num_gpes) { |
Bob Moore | e97d6bf | 2008-12-30 09:45:17 +0800 | [diff] [blame] | 300 | result = acpi_get_gpe_device(index, handle); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 301 | if (result) { |
| 302 | ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND, |
| 303 | "Invalid GPE 0x%x\n", index)); |
| 304 | goto end; |
| 305 | } |
Lin Ming | 0f849d2 | 2010-04-06 14:52:37 +0800 | [diff] [blame] | 306 | result = acpi_get_gpe_status(*handle, index, status); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 307 | } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS)) |
| 308 | result = acpi_get_event_status(index - num_gpes, status); |
| 309 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 310 | end: |
| 311 | return result; |
| 312 | } |
| 313 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 314 | static ssize_t counter_show(struct kobject *kobj, |
| 315 | struct kobj_attribute *attr, char *buf) |
| 316 | { |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 317 | int index = attr - counter_attrs; |
| 318 | int size; |
| 319 | acpi_handle handle; |
| 320 | acpi_event_status status; |
| 321 | int result = 0; |
| 322 | |
| 323 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count = |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 324 | acpi_irq_handled; |
Len Brown | 88bea18 | 2009-04-21 00:35:47 -0400 | [diff] [blame] | 325 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count = |
| 326 | acpi_irq_not_handled; |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 327 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count = |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 328 | acpi_gpe_count; |
| 329 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 330 | size = sprintf(buf, "%8d", all_counters[index].count); |
| 331 | |
| 332 | /* "gpe_all" or "sci" */ |
| 333 | if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) |
| 334 | goto end; |
| 335 | |
| 336 | result = get_status(index, &status, &handle); |
| 337 | if (result) |
| 338 | goto end; |
| 339 | |
Zhang Rui | ed206fa | 2008-10-27 14:01:02 -0700 | [diff] [blame] | 340 | if (!(status & ACPI_EVENT_FLAG_HANDLE)) |
| 341 | size += sprintf(buf + size, " invalid"); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 342 | else if (status & ACPI_EVENT_FLAG_ENABLED) |
Zhang Rui | ed206fa | 2008-10-27 14:01:02 -0700 | [diff] [blame] | 343 | size += sprintf(buf + size, " enabled"); |
| 344 | else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED) |
| 345 | size += sprintf(buf + size, " wake_enabled"); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 346 | else |
Zhang Rui | ed206fa | 2008-10-27 14:01:02 -0700 | [diff] [blame] | 347 | size += sprintf(buf + size, " disabled"); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 348 | |
| 349 | end: |
| 350 | size += sprintf(buf + size, "\n"); |
| 351 | return result ? result : size; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | /* |
| 355 | * counter_set() sets the specified counter. |
| 356 | * setting the total "sci" file to any value clears all counters. |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 357 | * enable/disable/clear a gpe/fixed event in user space. |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 358 | */ |
| 359 | static ssize_t counter_set(struct kobject *kobj, |
| 360 | struct kobj_attribute *attr, const char *buf, size_t size) |
| 361 | { |
| 362 | int index = attr - counter_attrs; |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 363 | acpi_event_status status; |
| 364 | acpi_handle handle; |
| 365 | int result = 0; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 366 | |
| 367 | if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) { |
| 368 | int i; |
| 369 | for (i = 0; i < num_counters; ++i) |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 370 | all_counters[i].count = 0; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 371 | acpi_gpe_count = 0; |
| 372 | acpi_irq_handled = 0; |
Len Brown | 88bea18 | 2009-04-21 00:35:47 -0400 | [diff] [blame] | 373 | acpi_irq_not_handled = 0; |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 374 | goto end; |
| 375 | } |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 376 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 377 | /* show the event status for both GPEs and Fixed Events */ |
| 378 | result = get_status(index, &status, &handle); |
| 379 | if (result) |
| 380 | goto end; |
| 381 | |
Zhang Rui | ed206fa | 2008-10-27 14:01:02 -0700 | [diff] [blame] | 382 | if (!(status & ACPI_EVENT_FLAG_HANDLE)) { |
Lin Ming | 55ac9a0 | 2008-09-28 14:51:56 +0800 | [diff] [blame] | 383 | printk(KERN_WARNING PREFIX |
| 384 | "Can not change Invalid GPE/Fixed Event status\n"); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 385 | return -EINVAL; |
| 386 | } |
| 387 | |
| 388 | if (index < num_gpes) { |
| 389 | if (!strcmp(buf, "disable\n") && |
| 390 | (status & ACPI_EVENT_FLAG_ENABLED)) |
Rafael J. Wysocki | a44061a | 2010-07-01 10:11:45 +0800 | [diff] [blame] | 391 | result = acpi_disable_gpe(handle, index); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 392 | else if (!strcmp(buf, "enable\n") && |
| 393 | !(status & ACPI_EVENT_FLAG_ENABLED)) |
Rafael J. Wysocki | a44061a | 2010-07-01 10:11:45 +0800 | [diff] [blame] | 394 | result = acpi_enable_gpe(handle, index); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 395 | else if (!strcmp(buf, "clear\n") && |
| 396 | (status & ACPI_EVENT_FLAG_SET)) |
Lin Ming | 0f849d2 | 2010-04-06 14:52:37 +0800 | [diff] [blame] | 397 | result = acpi_clear_gpe(handle, index); |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 398 | else |
| 399 | all_counters[index].count = strtoul(buf, NULL, 0); |
| 400 | } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) { |
| 401 | int event = index - num_gpes; |
| 402 | if (!strcmp(buf, "disable\n") && |
| 403 | (status & ACPI_EVENT_FLAG_ENABLED)) |
| 404 | result = acpi_disable_event(event, ACPI_NOT_ISR); |
| 405 | else if (!strcmp(buf, "enable\n") && |
| 406 | !(status & ACPI_EVENT_FLAG_ENABLED)) |
| 407 | result = acpi_enable_event(event, ACPI_NOT_ISR); |
| 408 | else if (!strcmp(buf, "clear\n") && |
| 409 | (status & ACPI_EVENT_FLAG_SET)) |
| 410 | result = acpi_clear_event(event); |
| 411 | else |
| 412 | all_counters[index].count = strtoul(buf, NULL, 0); |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 413 | } else |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 414 | all_counters[index].count = strtoul(buf, NULL, 0); |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 415 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 416 | if (ACPI_FAILURE(result)) |
| 417 | result = -EINVAL; |
| 418 | end: |
| 419 | return result ? result : size; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | void acpi_irq_stats_init(void) |
| 423 | { |
| 424 | int i; |
| 425 | |
| 426 | if (all_counters) |
| 427 | return; |
| 428 | |
Bob Moore | e97d6bf | 2008-12-30 09:45:17 +0800 | [diff] [blame] | 429 | num_gpes = acpi_current_gpe_count; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 430 | num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA; |
| 431 | |
| 432 | all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1), |
| 433 | GFP_KERNEL); |
| 434 | if (all_attrs == NULL) |
| 435 | return; |
| 436 | |
Zhang Rui | 71b58cb | 2008-06-20 09:42:47 +0800 | [diff] [blame] | 437 | all_counters = kzalloc(sizeof(struct event_counter) * (num_counters), |
| 438 | GFP_KERNEL); |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 439 | if (all_counters == NULL) |
| 440 | goto fail; |
| 441 | |
| 442 | counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters), |
| 443 | GFP_KERNEL); |
| 444 | if (counter_attrs == NULL) |
| 445 | goto fail; |
| 446 | |
| 447 | for (i = 0; i < num_counters; ++i) { |
Johann Felix Soden | c8dc9de | 2008-03-11 16:44:26 +0100 | [diff] [blame] | 448 | char buffer[12]; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 449 | char *name; |
| 450 | |
| 451 | if (i < num_gpes) |
| 452 | sprintf(buffer, "gpe%02X", i); |
| 453 | else if (i == num_gpes + ACPI_EVENT_PMTIMER) |
| 454 | sprintf(buffer, "ff_pmtimer"); |
| 455 | else if (i == num_gpes + ACPI_EVENT_GLOBAL) |
| 456 | sprintf(buffer, "ff_gbl_lock"); |
| 457 | else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON) |
| 458 | sprintf(buffer, "ff_pwr_btn"); |
| 459 | else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON) |
| 460 | sprintf(buffer, "ff_slp_btn"); |
| 461 | else if (i == num_gpes + ACPI_EVENT_RTC) |
| 462 | sprintf(buffer, "ff_rt_clk"); |
| 463 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE) |
| 464 | sprintf(buffer, "gpe_all"); |
| 465 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) |
| 466 | sprintf(buffer, "sci"); |
Len Brown | 88bea18 | 2009-04-21 00:35:47 -0400 | [diff] [blame] | 467 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT) |
| 468 | sprintf(buffer, "sci_not"); |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 469 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR) |
| 470 | sprintf(buffer, "error"); |
| 471 | else |
| 472 | sprintf(buffer, "bug%02X", i); |
| 473 | |
| 474 | name = kzalloc(strlen(buffer) + 1, GFP_KERNEL); |
| 475 | if (name == NULL) |
| 476 | goto fail; |
| 477 | strncpy(name, buffer, strlen(buffer) + 1); |
| 478 | |
Eric W. Biederman | a07e415 | 2010-02-11 15:23:05 -0800 | [diff] [blame] | 479 | sysfs_attr_init(&counter_attrs[i].attr); |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 480 | counter_attrs[i].attr.name = name; |
| 481 | counter_attrs[i].attr.mode = 0644; |
| 482 | counter_attrs[i].show = counter_show; |
| 483 | counter_attrs[i].store = counter_set; |
| 484 | |
| 485 | all_attrs[i] = &counter_attrs[i].attr; |
| 486 | } |
| 487 | |
| 488 | interrupt_stats_attr_group.attrs = all_attrs; |
Len Brown | b714315 | 2008-02-07 04:24:01 -0500 | [diff] [blame] | 489 | if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group)) |
| 490 | return; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 491 | |
| 492 | fail: |
| 493 | delete_gpe_attr_array(); |
| 494 | return; |
| 495 | } |
| 496 | |
| 497 | static void __exit interrupt_stats_exit(void) |
| 498 | { |
| 499 | sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group); |
| 500 | |
| 501 | delete_gpe_attr_array(); |
| 502 | |
| 503 | return; |
| 504 | } |
| 505 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 506 | /* -------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | FS Interface (/proc) |
| 508 | -------------------------------------------------------------------------- */ |
Zhang Rui | 5bb730f | 2007-01-29 11:02:42 +0800 | [diff] [blame] | 509 | #ifdef CONFIG_ACPI_PROCFS |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 510 | #define ACPI_SYSTEM_FILE_INFO "info" |
| 511 | #define ACPI_SYSTEM_FILE_EVENT "event" |
| 512 | #define ACPI_SYSTEM_FILE_DSDT "dsdt" |
| 513 | #define ACPI_SYSTEM_FILE_FADT "fadt" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 515 | static int acpi_system_read_info(struct seq_file *seq, void *offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
| 518 | seq_printf(seq, "version: %x\n", ACPI_CA_VERSION); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 519 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | } |
| 521 | |
| 522 | static int acpi_system_info_open_fs(struct inode *inode, struct file *file) |
| 523 | { |
| 524 | return single_open(file, acpi_system_read_info, PDE(inode)->data); |
| 525 | } |
| 526 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 527 | static const struct file_operations acpi_system_info_ops = { |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 528 | .owner = THIS_MODULE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 529 | .open = acpi_system_info_open_fs, |
| 530 | .read = seq_read, |
| 531 | .llseek = seq_lseek, |
| 532 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | }; |
| 534 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 535 | static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t, |
| 536 | loff_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 538 | static const struct file_operations acpi_system_dsdt_ops = { |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 539 | .owner = THIS_MODULE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 540 | .read = acpi_system_read_dsdt, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | }; |
| 542 | |
| 543 | static ssize_t |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 544 | acpi_system_read_dsdt(struct file *file, |
| 545 | char __user * buffer, size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 547 | acpi_status status = AE_OK; |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 548 | struct acpi_table_header *dsdt = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 549 | ssize_t res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 551 | status = acpi_get_table(ACPI_SIG_DSDT, 1, &dsdt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 553 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 555 | res = simple_read_from_buffer(buffer, count, ppos, dsdt, dsdt->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 557 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | } |
| 559 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 560 | static ssize_t acpi_system_read_fadt(struct file *, char __user *, size_t, |
| 561 | loff_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 563 | static const struct file_operations acpi_system_fadt_ops = { |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 564 | .owner = THIS_MODULE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 565 | .read = acpi_system_read_fadt, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | }; |
| 567 | |
| 568 | static ssize_t |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 569 | acpi_system_read_fadt(struct file *file, |
| 570 | char __user * buffer, size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 572 | acpi_status status = AE_OK; |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 573 | struct acpi_table_header *fadt = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 574 | ssize_t res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 576 | status = acpi_get_table(ACPI_SIG_FADT, 1, &fadt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 578 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 580 | res = simple_read_from_buffer(buffer, count, ppos, fadt, fadt->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 582 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | } |
| 584 | |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 585 | static int acpi_system_procfs_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 587 | struct proc_dir_entry *entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | int error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | /* 'info' [R] */ |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 591 | entry = proc_create(ACPI_SYSTEM_FILE_INFO, S_IRUGO, acpi_root_dir, |
| 592 | &acpi_system_info_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | if (!entry) |
| 594 | goto Error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
| 596 | /* 'dsdt' [R] */ |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 597 | entry = proc_create(ACPI_SYSTEM_FILE_DSDT, S_IRUSR, acpi_root_dir, |
| 598 | &acpi_system_dsdt_ops); |
| 599 | if (!entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | goto Error; |
| 601 | |
| 602 | /* 'fadt' [R] */ |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 603 | entry = proc_create(ACPI_SYSTEM_FILE_FADT, S_IRUSR, acpi_root_dir, |
| 604 | &acpi_system_fadt_ops); |
| 605 | if (!entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | goto Error; |
| 607 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 608 | Done: |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 609 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 611 | Error: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir); |
| 613 | remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir); |
| 614 | remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir); |
| 615 | |
| 616 | error = -EFAULT; |
| 617 | goto Done; |
| 618 | } |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 619 | #else |
| 620 | static int acpi_system_procfs_init(void) |
| 621 | { |
| 622 | return 0; |
| 623 | } |
| 624 | #endif |
| 625 | |
Bjorn Helgaas | 141a0af | 2009-03-24 16:49:58 -0600 | [diff] [blame] | 626 | int __init acpi_system_init(void) |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 627 | { |
Bjorn Helgaas | 141a0af | 2009-03-24 16:49:58 -0600 | [diff] [blame] | 628 | int result; |
Zhang Rui | d4c5f04 | 2007-06-14 17:43:07 +0800 | [diff] [blame] | 629 | |
| 630 | result = acpi_system_procfs_init(); |
| 631 | if (result) |
| 632 | return result; |
| 633 | |
| 634 | result = acpi_system_sysfs_init(); |
| 635 | |
| 636 | return result; |
| 637 | } |