include/linux/acpi.h

   1 /*
   2  * acpi.h - ACPI Interface
   3  *
   4  * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   5  *
   6  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  23  */
  24
  25 #ifndef _LINUX_ACPI_H
  26 #define _LINUX_ACPI_H
  27
  28 #include <linux/errno.h>
  29 #include <linux/ioport.h>       /* for struct resource */
  30 #include <linux/device.h>
  31
  32 #ifdef  CONFIG_ACPI
  33
  34 #ifndef _LINUX
  35 #define _LINUX
  36 #endif
  37
  38 #include <linux/list.h>
  39 #include <linux/mod_devicetable.h>
  40
  41 #include <acpi/acpi.h>
  42 #include <acpi/acpi_bus.h>
  43 #include <acpi/acpi_drivers.h>
  44 #include <acpi/acpi_numa.h>
  45 #include <asm/acpi.h>
  46
  47 enum acpi_irq_model_id {
  48         ACPI_IRQ_MODEL_PIC = 0,
  49         ACPI_IRQ_MODEL_IOAPIC,
  50         ACPI_IRQ_MODEL_IOSAPIC,
  51         ACPI_IRQ_MODEL_PLATFORM,
  52         ACPI_IRQ_MODEL_COUNT
  53 };
  54
  55 extern enum acpi_irq_model_id   acpi_irq_model;
  56
  57 enum acpi_interrupt_id {
  58         ACPI_INTERRUPT_PMI      = 1,
  59         ACPI_INTERRUPT_INIT,
  60         ACPI_INTERRUPT_CPEI,
  61         ACPI_INTERRUPT_COUNT
  62 };
  63
  64 #define ACPI_SPACE_MEM          0
  65
  66 enum acpi_address_range_id {
  67         ACPI_ADDRESS_RANGE_MEMORY = 1,
  68         ACPI_ADDRESS_RANGE_RESERVED = 2,
  69         ACPI_ADDRESS_RANGE_ACPI = 3,
  70         ACPI_ADDRESS_RANGE_NVS  = 4,
  71         ACPI_ADDRESS_RANGE_COUNT
  72 };
  73
  74
  75 /* Table Handlers */
  76
  77 typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);
  78
  79 typedef int (*acpi_tbl_entry_handler)(struct acpi_subtable_header *header,
  80                                       const unsigned long end);
  81
  82 #ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE
  83 void acpi_initrd_override(void *data, size_t size);
  84 #else
  85 static inline void acpi_initrd_override(void *data, size_t size)
  86 {
  87 }
  88 #endif
  89
  90 char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
  91 void __acpi_unmap_table(char *map, unsigned long size);
  92 int early_acpi_boot_init(void);
  93 int acpi_boot_init (void);
  94 void acpi_boot_table_init (void);
  95 int acpi_mps_check (void);
  96 int acpi_numa_init (void);
  97
  98 int acpi_table_init (void);
  99 int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
 100 int __init acpi_table_parse_entries(char *id, unsigned long table_size,
 101                                     int entry_id,
 102                                     acpi_tbl_entry_handler handler,
 103                                     unsigned int max_entries);
 104 int acpi_table_parse_madt(enum acpi_madt_type id,
 105                           acpi_tbl_entry_handler handler,
 106                           unsigned int max_entries);
 107 int acpi_parse_mcfg (struct acpi_table_header *header);
 108 void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
 109
 110 /* the following four functions are architecture-dependent */
 111 void acpi_numa_slit_init (struct acpi_table_slit *slit);
 112 void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
 113 void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
 114 int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
 115 void acpi_numa_arch_fixup(void);
 116
 117 #ifdef CONFIG_ACPI_HOTPLUG_CPU
 118 /* Arch dependent functions for cpu hotplug support */
 119 int acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu);
 120 int acpi_unmap_lsapic(int cpu);
 121 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
 122
 123 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
 124 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
 125 void acpi_irq_stats_init(void);
 126 extern u32 acpi_irq_handled;
 127 extern u32 acpi_irq_not_handled;
 128
 129 extern int sbf_port;
 130 extern unsigned long acpi_realmode_flags;
 131
 132 int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity);
 133 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 134 int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi);
 135
 136 #ifdef CONFIG_X86_IO_APIC
 137 extern int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity);
 138 #else
 139 #define acpi_get_override_irq(gsi, trigger, polarity) (-1)
 140 #endif
 141 /*
 142  * This function undoes the effect of one call to acpi_register_gsi().
 143  * If this matches the last registration, any IRQ resources for gsi
 144  * are freed.
 145  */
 146 void acpi_unregister_gsi (u32 gsi);
 147
 148 struct pci_dev;
 149
 150 int acpi_pci_irq_enable (struct pci_dev *dev);
 151 void acpi_penalize_isa_irq(int irq, int active);
 152
 153 void acpi_pci_irq_disable (struct pci_dev *dev);
 154
 155 extern int ec_read(u8 addr, u8 *val);
 156 extern int ec_write(u8 addr, u8 val);
 157 extern int ec_transaction(u8 command,
 158                           const u8 *wdata, unsigned wdata_len,
 159                           u8 *rdata, unsigned rdata_len);
 160 extern acpi_handle ec_get_handle(void);
 161
 162 #if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
 163
 164 typedef void (*wmi_notify_handler) (u32 value, void *context);
 165
 166 extern acpi_status wmi_evaluate_method(const char *guid, u8 instance,
 167                                         u32 method_id,
 168                                         const struct acpi_buffer *in,
 169                                         struct acpi_buffer *out);
 170 extern acpi_status wmi_query_block(const char *guid, u8 instance,
 171                                         struct acpi_buffer *out);
 172 extern acpi_status wmi_set_block(const char *guid, u8 instance,
 173                                         const struct acpi_buffer *in);
 174 extern acpi_status wmi_install_notify_handler(const char *guid,
 175                                         wmi_notify_handler handler, void *data);
 176 extern acpi_status wmi_remove_notify_handler(const char *guid);
 177 extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
 178 extern bool wmi_has_guid(const char *guid);
 179
 180 #endif  /* CONFIG_ACPI_WMI */
 181
 182 #define ACPI_VIDEO_OUTPUT_SWITCHING                     0x0001
 183 #define ACPI_VIDEO_DEVICE_POSTING                       0x0002
 184 #define ACPI_VIDEO_ROM_AVAILABLE                        0x0004
 185 #define ACPI_VIDEO_BACKLIGHT                            0x0008
 186 #define ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR               0x0010
 187 #define ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO                0x0020
 188 #define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR        0x0040
 189 #define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO         0x0080
 190 #define ACPI_VIDEO_BACKLIGHT_DMI_VENDOR                 0x0100
 191 #define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO                  0x0200
 192 #define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR          0x0400
 193 #define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO           0x0800
 194
 195 #if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
 196
 197 extern long acpi_video_get_capabilities(acpi_handle graphics_dev_handle);
 198 extern long acpi_is_video_device(acpi_handle handle);
 199 extern void acpi_video_dmi_promote_vendor(void);
 200 extern void acpi_video_dmi_demote_vendor(void);
 201 extern int acpi_video_backlight_support(void);
 202 extern int acpi_video_display_switch_support(void);
 203
 204 #else
 205
 206 static inline long acpi_video_get_capabilities(acpi_handle graphics_dev_handle)
 207 {
 208         return 0;
 209 }
 210
 211 static inline long acpi_is_video_device(acpi_handle handle)
 212 {
 213         return 0;
 214 }
 215
 216 static inline void acpi_video_dmi_promote_vendor(void)
 217 {
 218 }
 219
 220 static inline void acpi_video_dmi_demote_vendor(void)
 221 {
 222 }
 223
 224 static inline int acpi_video_backlight_support(void)
 225 {
 226         return 0;
 227 }
 228
 229 static inline int acpi_video_display_switch_support(void)
 230 {
 231         return 0;
 232 }
 233
 234 #endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
 235
 236 extern int acpi_blacklisted(void);
 237 extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
 238 extern void acpi_osi_setup(char *str);
 239
 240 #ifdef CONFIG_ACPI_NUMA
 241 int acpi_get_pxm(acpi_handle handle);
 242 int acpi_get_node(acpi_handle *handle);
 243 #else
 244 static inline int acpi_get_pxm(acpi_handle handle)
 245 {
 246         return 0;
 247 }
 248 static inline int acpi_get_node(acpi_handle *handle)
 249 {
 250         return 0;
 251 }
 252 #endif
 253 extern int acpi_paddr_to_node(u64 start_addr, u64 size);
 254
 255 extern int pnpacpi_disabled;
 256
 257 #define PXM_INVAL       (-1)
 258
 259 bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res);
 260 bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res);
 261 bool acpi_dev_resource_address_space(struct acpi_resource *ares,
 262                                      struct resource *res);
 263 bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
 264                                          struct resource *res);
 265 unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable);
 266 bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
 267                                  struct resource *res);
 268
 269 struct resource_list_entry {
 270         struct list_head node;
 271         struct resource res;
 272 };
 273
 274 void acpi_dev_free_resource_list(struct list_head *list);
 275 int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
 276                            int (*preproc)(struct acpi_resource *, void *),
 277                            void *preproc_data);
 278
 279 int acpi_check_resource_conflict(const struct resource *res);
 280
 281 int acpi_check_region(resource_size_t start, resource_size_t n,
 282                       const char *name);
 283
 284 int acpi_resources_are_enforced(void);
 285
 286 #ifdef CONFIG_HIBERNATION
 287 void __init acpi_no_s4_hw_signature(void);
 288 #endif
 289
 290 #ifdef CONFIG_PM_SLEEP
 291 void __init acpi_old_suspend_ordering(void);
 292 void __init acpi_nvs_nosave(void);
 293 void __init acpi_nvs_nosave_s3(void);
 294 #endif /* CONFIG_PM_SLEEP */
 295
 296 struct acpi_osc_context {
 297         char *uuid_str;                 /* UUID string */
 298         int rev;
 299         struct acpi_buffer cap;         /* list of DWORD capabilities */
 300         struct acpi_buffer ret;         /* free by caller if success */
 301 };
 302
 303 acpi_status acpi_str_to_uuid(char *str, u8 *uuid);
 304 acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
 305
 306 /* Indexes into _OSC Capabilities Buffer (DWORDs 2 & 3 are device-specific) */
 307 #define OSC_QUERY_DWORD                         0       /* DWORD 1 */
 308 #define OSC_SUPPORT_DWORD                       1       /* DWORD 2 */
 309 #define OSC_CONTROL_DWORD                       2       /* DWORD 3 */
 310
 311 /* _OSC Capabilities DWORD 1: Query/Control and Error Returns (generic) */
 312 #define OSC_QUERY_ENABLE                        0x00000001  /* input */
 313 #define OSC_REQUEST_ERROR                       0x00000002  /* return */
 314 #define OSC_INVALID_UUID_ERROR                  0x00000004  /* return */
 315 #define OSC_INVALID_REVISION_ERROR              0x00000008  /* return */
 316 #define OSC_CAPABILITIES_MASK_ERROR             0x00000010  /* return */
 317
 318 /* Platform-Wide Capabilities _OSC: Capabilities DWORD 2: Support Field */
 319 #define OSC_SB_PAD_SUPPORT                      0x00000001
 320 #define OSC_SB_PPC_OST_SUPPORT                  0x00000002
 321 #define OSC_SB_PR3_SUPPORT                      0x00000004
 322 #define OSC_SB_HOTPLUG_OST_SUPPORT              0x00000008
 323 #define OSC_SB_APEI_SUPPORT                     0x00000010
 324 #define OSC_SB_CPC_SUPPORT                      0x00000020
 325
 326 extern bool osc_sb_apei_support_acked;
 327
 328 /* PCI Host Bridge _OSC: Capabilities DWORD 2: Support Field */
 329 #define OSC_PCI_EXT_CONFIG_SUPPORT              0x00000001
 330 #define OSC_PCI_ASPM_SUPPORT                    0x00000002
 331 #define OSC_PCI_CLOCK_PM_SUPPORT                0x00000004
 332 #define OSC_PCI_SEGMENT_GROUPS_SUPPORT          0x00000008
 333 #define OSC_PCI_MSI_SUPPORT                     0x00000010
 334 #define OSC_PCI_SUPPORT_MASKS                   0x0000001f
 335
 336 /* PCI Host Bridge _OSC: Capabilities DWORD 3: Control Field */
 337 #define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL       0x00000001
 338 #define OSC_PCI_SHPC_NATIVE_HP_CONTROL          0x00000002
 339 #define OSC_PCI_EXPRESS_PME_CONTROL             0x00000004
 340 #define OSC_PCI_EXPRESS_AER_CONTROL             0x00000008
 341 #define OSC_PCI_EXPRESS_CAPABILITY_CONTROL      0x00000010
 342 #define OSC_PCI_CONTROL_MASKS                   0x0000001f
 343
 344 extern acpi_status acpi_pci_osc_control_set(acpi_handle handle,
 345                                              u32 *mask, u32 req);
 346
 347 /* Enable _OST when all relevant hotplug operations are enabled */
 348 #if defined(CONFIG_ACPI_HOTPLUG_CPU) &&                 \
 349         defined(CONFIG_ACPI_HOTPLUG_MEMORY) &&          \
 350         defined(CONFIG_ACPI_CONTAINER)
 351 #define ACPI_HOTPLUG_OST
 352 #endif
 353
 354 /* _OST Source Event Code (OSPM Action) */
 355 #define ACPI_OST_EC_OSPM_SHUTDOWN               0x100
 356 #define ACPI_OST_EC_OSPM_EJECT                  0x103
 357 #define ACPI_OST_EC_OSPM_INSERTION              0x200
 358
 359 /* _OST General Processing Status Code */
 360 #define ACPI_OST_SC_SUCCESS                     0x0
 361 #define ACPI_OST_SC_NON_SPECIFIC_FAILURE        0x1
 362 #define ACPI_OST_SC_UNRECOGNIZED_NOTIFY         0x2
 363
 364 /* _OST OS Shutdown Processing (0x100) Status Code */
 365 #define ACPI_OST_SC_OS_SHUTDOWN_DENIED          0x80
 366 #define ACPI_OST_SC_OS_SHUTDOWN_IN_PROGRESS     0x81
 367 #define ACPI_OST_SC_OS_SHUTDOWN_COMPLETED       0x82
 368 #define ACPI_OST_SC_OS_SHUTDOWN_NOT_SUPPORTED   0x83
 369
 370 /* _OST Ejection Request (0x3, 0x103) Status Code */
 371 #define ACPI_OST_SC_EJECT_NOT_SUPPORTED         0x80
 372 #define ACPI_OST_SC_DEVICE_IN_USE               0x81
 373 #define ACPI_OST_SC_DEVICE_BUSY                 0x82
 374 #define ACPI_OST_SC_EJECT_DEPENDENCY_BUSY       0x83
 375 #define ACPI_OST_SC_EJECT_IN_PROGRESS           0x84
 376
 377 /* _OST Insertion Request (0x200) Status Code */
 378 #define ACPI_OST_SC_INSERT_IN_PROGRESS          0x80
 379 #define ACPI_OST_SC_DRIVER_LOAD_FAILURE         0x81
 380 #define ACPI_OST_SC_INSERT_NOT_SUPPORTED        0x82
 381
 382 extern void acpi_early_init(void);
 383
 384 extern int acpi_nvs_register(__u64 start, __u64 size);
 385
 386 extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
 387                                     void *data);
 388
 389 const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
 390                                                const struct device *dev);
 391
 392 static inline bool acpi_driver_match_device(struct device *dev,
 393                                             const struct device_driver *drv)
 394 {
 395         return !!acpi_match_device(drv->acpi_match_table, dev);
 396 }
 397
 398 #define ACPI_PTR(_ptr)  (_ptr)
 399
 400 #else   /* !CONFIG_ACPI */
 401
 402 #define acpi_disabled 1
 403
 404 static inline void acpi_early_init(void) { }
 405
 406 static inline int early_acpi_boot_init(void)
 407 {
 408         return 0;
 409 }
 410 static inline int acpi_boot_init(void)
 411 {
 412         return 0;
 413 }
 414
 415 static inline void acpi_boot_table_init(void)
 416 {
 417         return;
 418 }
 419
 420 static inline int acpi_mps_check(void)
 421 {
 422         return 0;
 423 }
 424
 425 static inline int acpi_check_resource_conflict(struct resource *res)
 426 {
 427         return 0;
 428 }
 429
 430 static inline int acpi_check_region(resource_size_t start, resource_size_t n,
 431                                     const char *name)
 432 {
 433         return 0;
 434 }
 435
 436 struct acpi_table_header;
 437 static inline int acpi_table_parse(char *id,
 438                                 int (*handler)(struct acpi_table_header *))
 439 {
 440         return -1;
 441 }
 442
 443 static inline int acpi_nvs_register(__u64 start, __u64 size)
 444 {
 445         return 0;
 446 }
 447
 448 static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
 449                                            void *data)
 450 {
 451         return 0;
 452 }
 453
 454 struct acpi_device_id;
 455
 456 static inline const struct acpi_device_id *acpi_match_device(
 457         const struct acpi_device_id *ids, const struct device *dev)
 458 {
 459         return NULL;
 460 }
 461
 462 static inline bool acpi_driver_match_device(struct device *dev,
 463                                             const struct device_driver *drv)
 464 {
 465         return false;
 466 }
 467
 468 #define ACPI_PTR(_ptr)  (NULL)
 469
 470 #endif  /* !CONFIG_ACPI */
 471
 472 #ifdef CONFIG_ACPI
 473 void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
 474                                u32 pm1a_ctrl,  u32 pm1b_ctrl));
 475
 476 acpi_status acpi_os_prepare_sleep(u8 sleep_state,
 477                                   u32 pm1a_control, u32 pm1b_control);
 478
 479 void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
 480                                         u32 val_a,  u32 val_b));
 481
 482 acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
 483                                            u32 val_a, u32 val_b);
 484
 485 #ifdef CONFIG_X86
 486 void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
 487 #else
 488 static inline void arch_reserve_mem_area(acpi_physical_address addr,
 489                                           size_t size)
 490 {
 491 }
 492 #endif /* CONFIG_X86 */
 493 #else
 494 #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
 495 #endif
 496
 497 #if defined(CONFIG_ACPI) && defined(CONFIG_PM_RUNTIME)
 498 int acpi_dev_runtime_suspend(struct device *dev);
 499 int acpi_dev_runtime_resume(struct device *dev);
 500 int acpi_subsys_runtime_suspend(struct device *dev);
 501 int acpi_subsys_runtime_resume(struct device *dev);
 502 #else
 503 static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; }
 504 static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; }
 505 static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; }
 506 static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; }
 507 #endif
 508
 509 #if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP)
 510 int acpi_dev_suspend_late(struct device *dev);
 511 int acpi_dev_resume_early(struct device *dev);
 512 int acpi_subsys_prepare(struct device *dev);
 513 int acpi_subsys_suspend_late(struct device *dev);
 514 int acpi_subsys_resume_early(struct device *dev);
 515 #else
 516 static inline int acpi_dev_suspend_late(struct device *dev) { return 0; }
 517 static inline int acpi_dev_resume_early(struct device *dev) { return 0; }
 518 static inline int acpi_subsys_prepare(struct device *dev) { return 0; }
 519 static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; }
 520 static inline int acpi_subsys_resume_early(struct device *dev) { return 0; }
 521 #endif
 522
 523 #if defined(CONFIG_ACPI) && defined(CONFIG_PM)
 524 struct acpi_device *acpi_dev_pm_get_node(struct device *dev);
 525 int acpi_dev_pm_attach(struct device *dev, bool power_on);
 526 void acpi_dev_pm_detach(struct device *dev, bool power_off);
 527 #else
 528 static inline struct acpi_device *acpi_dev_pm_get_node(struct device *dev)
 529 {
 530         return NULL;
 531 }
 532 static inline int acpi_dev_pm_attach(struct device *dev, bool power_on)
 533 {
 534         return -ENODEV;
 535 }
 536 static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {}
 537 #endif
 538
 539 #ifdef CONFIG_ACPI
 540 __printf(3, 4)
 541 void acpi_handle_printk(const char *level, acpi_handle handle,
 542                         const char *fmt, ...);
 543 #else   /* !CONFIG_ACPI */
 544 static inline __printf(3, 4) void
 545 acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
 546 #endif  /* !CONFIG_ACPI */
 547
 548 /*
 549  * acpi_handle_<level>: Print message with ACPI prefix and object path
 550  *
 551  * These interfaces acquire the global namespace mutex to obtain an object
 552  * path.  In interrupt context, it shows the object path as <n/a>.
 553  */
 554 #define acpi_handle_emerg(handle, fmt, ...)                             \
 555         acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__)
 556 #define acpi_handle_alert(handle, fmt, ...)                             \
 557         acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__)
 558 #define acpi_handle_crit(handle, fmt, ...)                              \
 559         acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__)
 560 #define acpi_handle_err(handle, fmt, ...)                               \
 561         acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__)
 562 #define acpi_handle_warn(handle, fmt, ...)                              \
 563         acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__)
 564 #define acpi_handle_notice(handle, fmt, ...)                            \
 565         acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__)
 566 #define acpi_handle_info(handle, fmt, ...)                              \
 567         acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__)
 568
 569 /* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */
 570 #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
 571 #define acpi_handle_debug(handle, fmt, ...)                             \
 572         acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__)
 573 #else
 574 #define acpi_handle_debug(handle, fmt, ...)                             \
 575 ({                                                                      \
 576         if (0)                                                          \
 577                 acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \
 578         0;                                                              \
 579 })
 580 #endif
 581
 582 #endif  /*_LINUX_ACPI_H*/