linux/include/linux/acpi.h
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   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
  47enum 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
  55extern enum acpi_irq_model_id   acpi_irq_model;
  56
  57enum 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
  66enum 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
  77typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);
  78
  79typedef int (*acpi_tbl_entry_handler)(struct acpi_subtable_header *header,
  80                                      const unsigned long end);
  81
  82#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE
  83void acpi_initrd_override(void *data, size_t size);
  84#else
  85static inline void acpi_initrd_override(void *data, size_t size)
  86{
  87}
  88#endif
  89
  90char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
  91void __acpi_unmap_table(char *map, unsigned long size);
  92int early_acpi_boot_init(void);
  93int acpi_boot_init (void);
  94void acpi_boot_table_init (void);
  95int acpi_mps_check (void);
  96int acpi_numa_init (void);
  97
  98int acpi_table_init (void);
  99int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
 100int __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);
 104int acpi_table_parse_madt(enum acpi_madt_type id,
 105                          acpi_tbl_entry_handler handler,
 106                          unsigned int max_entries);
 107int acpi_parse_mcfg (struct acpi_table_header *header);
 108void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
 109
 110/* the following four functions are architecture-dependent */
 111void acpi_numa_slit_init (struct acpi_table_slit *slit);
 112void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
 113void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
 114int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
 115void acpi_numa_arch_fixup(void);
 116
 117#ifdef CONFIG_ACPI_HOTPLUG_CPU
 118/* Arch dependent functions for cpu hotplug support */
 119int acpi_map_lsapic(acpi_handle handle, int *pcpu);
 120int acpi_unmap_lsapic(int cpu);
 121#endif /* CONFIG_ACPI_HOTPLUG_CPU */
 122
 123int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
 124int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
 125void acpi_irq_stats_init(void);
 126extern u32 acpi_irq_handled;
 127extern u32 acpi_irq_not_handled;
 128
 129extern int sbf_port;
 130extern unsigned long acpi_realmode_flags;
 131
 132int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity);
 133int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 134int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi);
 135
 136#ifdef CONFIG_X86_IO_APIC
 137extern 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 */
 146void acpi_unregister_gsi (u32 gsi);
 147
 148struct pci_dev;
 149
 150int acpi_pci_irq_enable (struct pci_dev *dev);
 151void acpi_penalize_isa_irq(int irq, int active);
 152
 153void acpi_pci_irq_disable (struct pci_dev *dev);
 154
 155struct acpi_pci_driver {
 156        struct list_head node;
 157        int (*add)(struct acpi_pci_root *root);
 158        void (*remove)(struct acpi_pci_root *root);
 159};
 160
 161int acpi_pci_register_driver(struct acpi_pci_driver *driver);
 162void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
 163
 164extern int ec_read(u8 addr, u8 *val);
 165extern int ec_write(u8 addr, u8 val);
 166extern int ec_transaction(u8 command,
 167                          const u8 *wdata, unsigned wdata_len,
 168                          u8 *rdata, unsigned rdata_len);
 169extern acpi_handle ec_get_handle(void);
 170
 171#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
 172
 173typedef void (*wmi_notify_handler) (u32 value, void *context);
 174
 175extern acpi_status wmi_evaluate_method(const char *guid, u8 instance,
 176                                        u32 method_id,
 177                                        const struct acpi_buffer *in,
 178                                        struct acpi_buffer *out);
 179extern acpi_status wmi_query_block(const char *guid, u8 instance,
 180                                        struct acpi_buffer *out);
 181extern acpi_status wmi_set_block(const char *guid, u8 instance,
 182                                        const struct acpi_buffer *in);
 183extern acpi_status wmi_install_notify_handler(const char *guid,
 184                                        wmi_notify_handler handler, void *data);
 185extern acpi_status wmi_remove_notify_handler(const char *guid);
 186extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
 187extern bool wmi_has_guid(const char *guid);
 188
 189#endif  /* CONFIG_ACPI_WMI */
 190
 191#define ACPI_VIDEO_OUTPUT_SWITCHING                     0x0001
 192#define ACPI_VIDEO_DEVICE_POSTING                       0x0002
 193#define ACPI_VIDEO_ROM_AVAILABLE                        0x0004
 194#define ACPI_VIDEO_BACKLIGHT                            0x0008
 195#define ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR               0x0010
 196#define ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO                0x0020
 197#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR        0x0040
 198#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO         0x0080
 199#define ACPI_VIDEO_BACKLIGHT_DMI_VENDOR                 0x0100
 200#define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO                  0x0200
 201#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR          0x0400
 202#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO           0x0800
 203
 204#if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
 205
 206extern long acpi_video_get_capabilities(acpi_handle graphics_dev_handle);
 207extern long acpi_is_video_device(struct acpi_device *device);
 208extern void acpi_video_dmi_promote_vendor(void);
 209extern void acpi_video_dmi_demote_vendor(void);
 210extern int acpi_video_backlight_support(void);
 211extern int acpi_video_display_switch_support(void);
 212
 213#else
 214
 215static inline long acpi_video_get_capabilities(acpi_handle graphics_dev_handle)
 216{
 217        return 0;
 218}
 219
 220static inline long acpi_is_video_device(struct acpi_device *device)
 221{
 222        return 0;
 223}
 224
 225static inline void acpi_video_dmi_promote_vendor(void)
 226{
 227}
 228
 229static inline void acpi_video_dmi_demote_vendor(void)
 230{
 231}
 232
 233static inline int acpi_video_backlight_support(void)
 234{
 235        return 0;
 236}
 237
 238static inline int acpi_video_display_switch_support(void)
 239{
 240        return 0;
 241}
 242
 243#endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
 244
 245extern int acpi_blacklisted(void);
 246extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
 247extern void acpi_osi_setup(char *str);
 248
 249#ifdef CONFIG_ACPI_NUMA
 250int acpi_get_pxm(acpi_handle handle);
 251int acpi_get_node(acpi_handle *handle);
 252#else
 253static inline int acpi_get_pxm(acpi_handle handle)
 254{
 255        return 0;
 256}
 257static inline int acpi_get_node(acpi_handle *handle)
 258{
 259        return 0;
 260}
 261#endif
 262extern int acpi_paddr_to_node(u64 start_addr, u64 size);
 263
 264extern int pnpacpi_disabled;
 265
 266#define PXM_INVAL       (-1)
 267
 268bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res);
 269bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res);
 270bool acpi_dev_resource_address_space(struct acpi_resource *ares,
 271                                     struct resource *res);
 272bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
 273                                         struct resource *res);
 274unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable);
 275bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
 276                                 struct resource *res);
 277
 278struct resource_list_entry {
 279        struct list_head node;
 280        struct resource res;
 281};
 282
 283void acpi_dev_free_resource_list(struct list_head *list);
 284int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
 285                           int (*preproc)(struct acpi_resource *, void *),
 286                           void *preproc_data);
 287
 288int acpi_check_resource_conflict(const struct resource *res);
 289
 290int acpi_check_region(resource_size_t start, resource_size_t n,
 291                      const char *name);
 292
 293int acpi_resources_are_enforced(void);
 294
 295#ifdef CONFIG_HIBERNATION
 296void __init acpi_no_s4_hw_signature(void);
 297#endif
 298
 299#ifdef CONFIG_PM_SLEEP
 300void __init acpi_old_suspend_ordering(void);
 301void __init acpi_nvs_nosave(void);
 302void __init acpi_nvs_nosave_s3(void);
 303#endif /* CONFIG_PM_SLEEP */
 304
 305struct acpi_osc_context {
 306        char *uuid_str; /* uuid string */
 307        int rev;
 308        struct acpi_buffer cap; /* arg2/arg3 */
 309        struct acpi_buffer ret; /* free by caller if success */
 310};
 311
 312#define OSC_QUERY_TYPE                  0
 313#define OSC_SUPPORT_TYPE                1
 314#define OSC_CONTROL_TYPE                2
 315
 316/* _OSC DW0 Definition */
 317#define OSC_QUERY_ENABLE                1
 318#define OSC_REQUEST_ERROR               2
 319#define OSC_INVALID_UUID_ERROR          4
 320#define OSC_INVALID_REVISION_ERROR      8
 321#define OSC_CAPABILITIES_MASK_ERROR     16
 322
 323acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
 324
 325/* platform-wide _OSC bits */
 326#define OSC_SB_PAD_SUPPORT              1
 327#define OSC_SB_PPC_OST_SUPPORT          2
 328#define OSC_SB_PR3_SUPPORT              4
 329#define OSC_SB_HOTPLUG_OST_SUPPORT      8
 330#define OSC_SB_APEI_SUPPORT             16
 331
 332extern bool osc_sb_apei_support_acked;
 333
 334/* PCI defined _OSC bits */
 335/* _OSC DW1 Definition (OS Support Fields) */
 336#define OSC_EXT_PCI_CONFIG_SUPPORT              1
 337#define OSC_ACTIVE_STATE_PWR_SUPPORT            2
 338#define OSC_CLOCK_PWR_CAPABILITY_SUPPORT        4
 339#define OSC_PCI_SEGMENT_GROUPS_SUPPORT          8
 340#define OSC_MSI_SUPPORT                         16
 341#define OSC_PCI_SUPPORT_MASKS                   0x1f
 342
 343/* _OSC DW1 Definition (OS Control Fields) */
 344#define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL       1
 345#define OSC_SHPC_NATIVE_HP_CONTROL              2
 346#define OSC_PCI_EXPRESS_PME_CONTROL             4
 347#define OSC_PCI_EXPRESS_AER_CONTROL             8
 348#define OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL   16
 349
 350#define OSC_PCI_CONTROL_MASKS   (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL |    \
 351                                OSC_SHPC_NATIVE_HP_CONTROL |            \
 352                                OSC_PCI_EXPRESS_PME_CONTROL |           \
 353                                OSC_PCI_EXPRESS_AER_CONTROL |           \
 354                                OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL)
 355
 356#define OSC_PCI_NATIVE_HOTPLUG  (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL |    \
 357                                OSC_SHPC_NATIVE_HP_CONTROL)
 358
 359extern acpi_status acpi_pci_osc_control_set(acpi_handle handle,
 360                                             u32 *mask, u32 req);
 361
 362/* Enable _OST when all relevant hotplug operations are enabled */
 363#if defined(CONFIG_ACPI_HOTPLUG_CPU) &&                 \
 364        (defined(CONFIG_ACPI_HOTPLUG_MEMORY) ||         \
 365         defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)) && \
 366        defined(CONFIG_ACPI_CONTAINER)
 367#define ACPI_HOTPLUG_OST
 368#endif
 369
 370/* _OST Source Event Code (OSPM Action) */
 371#define ACPI_OST_EC_OSPM_SHUTDOWN               0x100
 372#define ACPI_OST_EC_OSPM_EJECT                  0x103
 373#define ACPI_OST_EC_OSPM_INSERTION              0x200
 374
 375/* _OST General Processing Status Code */
 376#define ACPI_OST_SC_SUCCESS                     0x0
 377#define ACPI_OST_SC_NON_SPECIFIC_FAILURE        0x1
 378#define ACPI_OST_SC_UNRECOGNIZED_NOTIFY         0x2
 379
 380/* _OST OS Shutdown Processing (0x100) Status Code */
 381#define ACPI_OST_SC_OS_SHUTDOWN_DENIED          0x80
 382#define ACPI_OST_SC_OS_SHUTDOWN_IN_PROGRESS     0x81
 383#define ACPI_OST_SC_OS_SHUTDOWN_COMPLETED       0x82
 384#define ACPI_OST_SC_OS_SHUTDOWN_NOT_SUPPORTED   0x83
 385
 386/* _OST Ejection Request (0x3, 0x103) Status Code */
 387#define ACPI_OST_SC_EJECT_NOT_SUPPORTED         0x80
 388#define ACPI_OST_SC_DEVICE_IN_USE               0x81
 389#define ACPI_OST_SC_DEVICE_BUSY                 0x82
 390#define ACPI_OST_SC_EJECT_DEPENDENCY_BUSY       0x83
 391#define ACPI_OST_SC_EJECT_IN_PROGRESS           0x84
 392
 393/* _OST Insertion Request (0x200) Status Code */
 394#define ACPI_OST_SC_INSERT_IN_PROGRESS          0x80
 395#define ACPI_OST_SC_DRIVER_LOAD_FAILURE         0x81
 396#define ACPI_OST_SC_INSERT_NOT_SUPPORTED        0x82
 397
 398extern void acpi_early_init(void);
 399
 400extern int acpi_nvs_register(__u64 start, __u64 size);
 401
 402extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
 403                                    void *data);
 404
 405const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
 406                                               const struct device *dev);
 407
 408static inline bool acpi_driver_match_device(struct device *dev,
 409                                            const struct device_driver *drv)
 410{
 411        return !!acpi_match_device(drv->acpi_match_table, dev);
 412}
 413
 414#define ACPI_PTR(_ptr)  (_ptr)
 415
 416#else   /* !CONFIG_ACPI */
 417
 418#define acpi_disabled 1
 419
 420static inline void acpi_early_init(void) { }
 421
 422static inline int early_acpi_boot_init(void)
 423{
 424        return 0;
 425}
 426static inline int acpi_boot_init(void)
 427{
 428        return 0;
 429}
 430
 431static inline void acpi_boot_table_init(void)
 432{
 433        return;
 434}
 435
 436static inline int acpi_mps_check(void)
 437{
 438        return 0;
 439}
 440
 441static inline int acpi_check_resource_conflict(struct resource *res)
 442{
 443        return 0;
 444}
 445
 446static inline int acpi_check_region(resource_size_t start, resource_size_t n,
 447                                    const char *name)
 448{
 449        return 0;
 450}
 451
 452struct acpi_table_header;
 453static inline int acpi_table_parse(char *id,
 454                                int (*handler)(struct acpi_table_header *))
 455{
 456        return -1;
 457}
 458
 459static inline int acpi_nvs_register(__u64 start, __u64 size)
 460{
 461        return 0;
 462}
 463
 464static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
 465                                           void *data)
 466{
 467        return 0;
 468}
 469
 470struct acpi_device_id;
 471
 472static inline const struct acpi_device_id *acpi_match_device(
 473        const struct acpi_device_id *ids, const struct device *dev)
 474{
 475        return NULL;
 476}
 477
 478static inline bool acpi_driver_match_device(struct device *dev,
 479                                            const struct device_driver *drv)
 480{
 481        return false;
 482}
 483
 484#define ACPI_PTR(_ptr)  (NULL)
 485
 486#endif  /* !CONFIG_ACPI */
 487
 488#ifdef CONFIG_ACPI
 489void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
 490                               u32 pm1a_ctrl,  u32 pm1b_ctrl));
 491
 492acpi_status acpi_os_prepare_sleep(u8 sleep_state,
 493                                  u32 pm1a_control, u32 pm1b_control);
 494#ifdef CONFIG_X86
 495void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
 496#else
 497static inline void arch_reserve_mem_area(acpi_physical_address addr,
 498                                          size_t size)
 499{
 500}
 501#endif /* CONFIG_X86 */
 502#else
 503#define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
 504#endif
 505
 506#if defined(CONFIG_ACPI) && defined(CONFIG_PM_RUNTIME)
 507int acpi_dev_runtime_suspend(struct device *dev);
 508int acpi_dev_runtime_resume(struct device *dev);
 509int acpi_subsys_runtime_suspend(struct device *dev);
 510int acpi_subsys_runtime_resume(struct device *dev);
 511#else
 512static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; }
 513static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; }
 514static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; }
 515static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; }
 516#endif
 517
 518#if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP)
 519int acpi_dev_suspend_late(struct device *dev);
 520int acpi_dev_resume_early(struct device *dev);
 521int acpi_subsys_prepare(struct device *dev);
 522int acpi_subsys_suspend_late(struct device *dev);
 523int acpi_subsys_resume_early(struct device *dev);
 524#else
 525static inline int acpi_dev_suspend_late(struct device *dev) { return 0; }
 526static inline int acpi_dev_resume_early(struct device *dev) { return 0; }
 527static inline int acpi_subsys_prepare(struct device *dev) { return 0; }
 528static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; }
 529static inline int acpi_subsys_resume_early(struct device *dev) { return 0; }
 530#endif
 531
 532#if defined(CONFIG_ACPI) && defined(CONFIG_PM)
 533struct acpi_device *acpi_dev_pm_get_node(struct device *dev);
 534int acpi_dev_pm_attach(struct device *dev, bool power_on);
 535void acpi_dev_pm_detach(struct device *dev, bool power_off);
 536#else
 537static inline struct acpi_device *acpi_dev_pm_get_node(struct device *dev)
 538{
 539        return NULL;
 540}
 541static inline int acpi_dev_pm_attach(struct device *dev, bool power_on)
 542{
 543        return -ENODEV;
 544}
 545static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {}
 546#endif
 547
 548#ifdef CONFIG_ACPI
 549__printf(3, 4)
 550void acpi_handle_printk(const char *level, acpi_handle handle,
 551                        const char *fmt, ...);
 552#else   /* !CONFIG_ACPI */
 553static inline __printf(3, 4) void
 554acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
 555#endif  /* !CONFIG_ACPI */
 556
 557/*
 558 * acpi_handle_<level>: Print message with ACPI prefix and object path
 559 *
 560 * These interfaces acquire the global namespace mutex to obtain an object
 561 * path.  In interrupt context, it shows the object path as <n/a>.
 562 */
 563#define acpi_handle_emerg(handle, fmt, ...)                             \
 564        acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__)
 565#define acpi_handle_alert(handle, fmt, ...)                             \
 566        acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__)
 567#define acpi_handle_crit(handle, fmt, ...)                              \
 568        acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__)
 569#define acpi_handle_err(handle, fmt, ...)                               \
 570        acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__)
 571#define acpi_handle_warn(handle, fmt, ...)                              \
 572        acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__)
 573#define acpi_handle_notice(handle, fmt, ...)                            \
 574        acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__)
 575#define acpi_handle_info(handle, fmt, ...)                              \
 576        acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__)
 577
 578/* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */
 579#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
 580#define acpi_handle_debug(handle, fmt, ...)                             \
 581        acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__)
 582#else
 583#define acpi_handle_debug(handle, fmt, ...)                             \
 584({                                                                      \
 585        if (0)                                                          \
 586                acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \
 587        0;                                                              \
 588})
 589#endif
 590
 591#endif  /*_LINUX_ACPI_H*/
 592
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