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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 <acpi/acpi_io.h> 46#include <asm/acpi.h> 47 48static inline acpi_handle acpi_device_handle(struct acpi_device *adev) 49{ 50 return adev ? adev->handle : NULL; 51} 52 53#define ACPI_COMPANION(dev) ((dev)->acpi_node.companion) 54#define ACPI_COMPANION_SET(dev, adev) ACPI_COMPANION(dev) = (adev) 55#define ACPI_HANDLE(dev) acpi_device_handle(ACPI_COMPANION(dev)) 56 57static inline void acpi_preset_companion(struct device *dev, 58 struct acpi_device *parent, u64 addr) 59{ 60 ACPI_COMPANION_SET(dev, acpi_find_child_device(parent, addr, NULL)); 61} 62 63static inline const char *acpi_dev_name(struct acpi_device *adev) 64{ 65 return dev_name(&adev->dev); 66} 67 68enum acpi_irq_model_id { 69 ACPI_IRQ_MODEL_PIC = 0, 70 ACPI_IRQ_MODEL_IOAPIC, 71 ACPI_IRQ_MODEL_IOSAPIC, 72 ACPI_IRQ_MODEL_PLATFORM, 73 ACPI_IRQ_MODEL_COUNT 74}; 75 76extern enum acpi_irq_model_id acpi_irq_model; 77 78enum acpi_interrupt_id { 79 ACPI_INTERRUPT_PMI = 1, 80 ACPI_INTERRUPT_INIT, 81 ACPI_INTERRUPT_CPEI, 82 ACPI_INTERRUPT_COUNT 83}; 84 85#define ACPI_SPACE_MEM 0 86 87enum acpi_address_range_id { 88 ACPI_ADDRESS_RANGE_MEMORY = 1, 89 ACPI_ADDRESS_RANGE_RESERVED = 2, 90 ACPI_ADDRESS_RANGE_ACPI = 3, 91 ACPI_ADDRESS_RANGE_NVS = 4, 92 ACPI_ADDRESS_RANGE_COUNT 93}; 94 95 96/* Table Handlers */ 97 98typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table); 99 100typedef int (*acpi_tbl_entry_handler)(struct acpi_subtable_header *header, 101 const unsigned long end); 102 103#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE 104void acpi_initrd_override(void *data, size_t size); 105#else 106static inline void acpi_initrd_override(void *data, size_t size) 107{ 108} 109#endif 110 111char * __acpi_map_table (unsigned long phys_addr, unsigned long size); 112void __acpi_unmap_table(char *map, unsigned long size); 113int early_acpi_boot_init(void); 114int acpi_boot_init (void); 115void acpi_boot_table_init (void); 116int acpi_mps_check (void); 117int acpi_numa_init (void); 118 119int acpi_table_init (void); 120int acpi_table_parse(char *id, acpi_tbl_table_handler handler); 121int __init acpi_table_parse_entries(char *id, unsigned long table_size, 122 int entry_id, 123 acpi_tbl_entry_handler handler, 124 unsigned int max_entries); 125int acpi_table_parse_madt(enum acpi_madt_type id, 126 acpi_tbl_entry_handler handler, 127 unsigned int max_entries); 128int acpi_parse_mcfg (struct acpi_table_header *header); 129void acpi_table_print_madt_entry (struct acpi_subtable_header *madt); 130 131/* the following four functions are architecture-dependent */ 132void acpi_numa_slit_init (struct acpi_table_slit *slit); 133void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa); 134void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa); 135int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma); 136void acpi_numa_arch_fixup(void); 137 138#ifdef CONFIG_ACPI_HOTPLUG_CPU 139/* Arch dependent functions for cpu hotplug support */ 140int acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu); 141int acpi_unmap_lsapic(int cpu); 142#endif /* CONFIG_ACPI_HOTPLUG_CPU */ 143 144int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base); 145int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base); 146void acpi_irq_stats_init(void); 147extern u32 acpi_irq_handled; 148extern u32 acpi_irq_not_handled; 149 150extern int sbf_port; 151extern unsigned long acpi_realmode_flags; 152 153int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity); 154int acpi_gsi_to_irq (u32 gsi, unsigned int *irq); 155int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi); 156 157#ifdef CONFIG_X86_IO_APIC 158extern int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity); 159#else 160#define acpi_get_override_irq(gsi, trigger, polarity) (-1) 161#endif 162/* 163 * This function undoes the effect of one call to acpi_register_gsi(). 164 * If this matches the last registration, any IRQ resources for gsi 165 * are freed. 166 */ 167void acpi_unregister_gsi (u32 gsi); 168 169struct pci_dev; 170 171int acpi_pci_irq_enable (struct pci_dev *dev); 172void acpi_penalize_isa_irq(int irq, int active); 173 174void acpi_pci_irq_disable (struct pci_dev *dev); 175 176extern int ec_read(u8 addr, u8 *val); 177extern int ec_write(u8 addr, u8 val); 178extern int ec_transaction(u8 command, 179 const u8 *wdata, unsigned wdata_len, 180 u8 *rdata, unsigned rdata_len); 181extern acpi_handle ec_get_handle(void); 182 183#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE) 184 185typedef void (*wmi_notify_handler) (u32 value, void *context); 186 187extern acpi_status wmi_evaluate_method(const char *guid, u8 instance, 188 u32 method_id, 189 const struct acpi_buffer *in, 190 struct acpi_buffer *out); 191extern acpi_status wmi_query_block(const char *guid, u8 instance, 192 struct acpi_buffer *out); 193extern acpi_status wmi_set_block(const char *guid, u8 instance, 194 const struct acpi_buffer *in); 195extern acpi_status wmi_install_notify_handler(const char *guid, 196 wmi_notify_handler handler, void *data); 197extern acpi_status wmi_remove_notify_handler(const char *guid); 198extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out); 199extern bool wmi_has_guid(const char *guid); 200 201#endif /* CONFIG_ACPI_WMI */ 202 203#define ACPI_VIDEO_OUTPUT_SWITCHING 0x0001 204#define ACPI_VIDEO_DEVICE_POSTING 0x0002 205#define ACPI_VIDEO_ROM_AVAILABLE 0x0004 206#define ACPI_VIDEO_BACKLIGHT 0x0008 207#define ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR 0x0010 208#define ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO 0x0020 209#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR 0x0040 210#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO 0x0080 211#define ACPI_VIDEO_BACKLIGHT_DMI_VENDOR 0x0100 212#define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO 0x0200 213#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR 0x0400 214#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO 0x0800 215 216#if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) 217 218extern long acpi_video_get_capabilities(acpi_handle graphics_dev_handle); 219extern long acpi_is_video_device(acpi_handle handle); 220extern void acpi_video_dmi_promote_vendor(void); 221extern void acpi_video_dmi_demote_vendor(void); 222extern int acpi_video_backlight_support(void); 223extern int acpi_video_display_switch_support(void); 224 225#else 226 227static inline long acpi_video_get_capabilities(acpi_handle graphics_dev_handle) 228{ 229 return 0; 230} 231 232static inline long acpi_is_video_device(acpi_handle handle) 233{ 234 return 0; 235} 236 237static inline void acpi_video_dmi_promote_vendor(void) 238{ 239} 240 241static inline void acpi_video_dmi_demote_vendor(void) 242{ 243} 244 245static inline int acpi_video_backlight_support(void) 246{ 247 return 0; 248} 249 250static inline int acpi_video_display_switch_support(void) 251{ 252 return 0; 253} 254 255#endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */ 256 257extern int acpi_blacklisted(void); 258extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d); 259extern void acpi_osi_setup(char *str); 260 261#ifdef CONFIG_ACPI_NUMA 262int acpi_get_pxm(acpi_handle handle); 263int acpi_get_node(acpi_handle *handle); 264#else 265static inline int acpi_get_pxm(acpi_handle handle) 266{ 267 return 0; 268} 269static inline int acpi_get_node(acpi_handle *handle) 270{ 271 return 0; 272} 273#endif 274extern int acpi_paddr_to_node(u64 start_addr, u64 size); 275 276extern int pnpacpi_disabled; 277 278#define PXM_INVAL (-1) 279 280bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res); 281bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res); 282bool acpi_dev_resource_address_space(struct acpi_resource *ares, 283 struct resource *res); 284bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares, 285 struct resource *res); 286unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable); 287bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, 288 struct resource *res); 289 290struct resource_list_entry { 291 struct list_head node; 292 struct resource res; 293}; 294 295void acpi_dev_free_resource_list(struct list_head *list); 296int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list, 297 int (*preproc)(struct acpi_resource *, void *), 298 void *preproc_data); 299 300int acpi_check_resource_conflict(const struct resource *res); 301 302int acpi_check_region(resource_size_t start, resource_size_t n, 303 const char *name); 304 305int acpi_resources_are_enforced(void); 306 307#ifdef CONFIG_HIBERNATION 308void __init acpi_no_s4_hw_signature(void); 309#endif 310 311#ifdef CONFIG_PM_SLEEP 312void __init acpi_old_suspend_ordering(void); 313void __init acpi_nvs_nosave(void); 314void __init acpi_nvs_nosave_s3(void); 315#endif /* CONFIG_PM_SLEEP */ 316 317struct acpi_osc_context { 318 char *uuid_str; /* UUID string */ 319 int rev; 320 struct acpi_buffer cap; /* list of DWORD capabilities */ 321 struct acpi_buffer ret; /* free by caller if success */ 322}; 323 324acpi_status acpi_str_to_uuid(char *str, u8 *uuid); 325acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context); 326 327/* Indexes into _OSC Capabilities Buffer (DWORDs 2 & 3 are device-specific) */ 328#define OSC_QUERY_DWORD 0 /* DWORD 1 */ 329#define OSC_SUPPORT_DWORD 1 /* DWORD 2 */ 330#define OSC_CONTROL_DWORD 2 /* DWORD 3 */ 331 332/* _OSC Capabilities DWORD 1: Query/Control and Error Returns (generic) */ 333#define OSC_QUERY_ENABLE 0x00000001 /* input */ 334#define OSC_REQUEST_ERROR 0x00000002 /* return */ 335#define OSC_INVALID_UUID_ERROR 0x00000004 /* return */ 336#define OSC_INVALID_REVISION_ERROR 0x00000008 /* return */ 337#define OSC_CAPABILITIES_MASK_ERROR 0x00000010 /* return */ 338 339/* Platform-Wide Capabilities _OSC: Capabilities DWORD 2: Support Field */ 340#define OSC_SB_PAD_SUPPORT 0x00000001 341#define OSC_SB_PPC_OST_SUPPORT 0x00000002 342#define OSC_SB_PR3_SUPPORT 0x00000004 343#define OSC_SB_HOTPLUG_OST_SUPPORT 0x00000008 344#define OSC_SB_APEI_SUPPORT 0x00000010 345#define OSC_SB_CPC_SUPPORT 0x00000020 346 347extern bool osc_sb_apei_support_acked; 348 349/* PCI Host Bridge _OSC: Capabilities DWORD 2: Support Field */ 350#define OSC_PCI_EXT_CONFIG_SUPPORT 0x00000001 351#define OSC_PCI_ASPM_SUPPORT 0x00000002 352#define OSC_PCI_CLOCK_PM_SUPPORT 0x00000004 353#define OSC_PCI_SEGMENT_GROUPS_SUPPORT 0x00000008 354#define OSC_PCI_MSI_SUPPORT 0x00000010 355#define OSC_PCI_SUPPORT_MASKS 0x0000001f 356 357/* PCI Host Bridge _OSC: Capabilities DWORD 3: Control Field */ 358#define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL 0x00000001 359#define OSC_PCI_SHPC_NATIVE_HP_CONTROL 0x00000002 360#define OSC_PCI_EXPRESS_PME_CONTROL 0x00000004 361#define OSC_PCI_EXPRESS_AER_CONTROL 0x00000008 362#define OSC_PCI_EXPRESS_CAPABILITY_CONTROL 0x00000010 363#define OSC_PCI_CONTROL_MASKS 0x0000001f 364 365extern acpi_status acpi_pci_osc_control_set(acpi_handle handle, 366 u32 *mask, u32 req); 367 368/* Enable _OST when all relevant hotplug operations are enabled */ 369#if defined(CONFIG_ACPI_HOTPLUG_CPU) && \ 370 defined(CONFIG_ACPI_HOTPLUG_MEMORY) && \ 371 defined(CONFIG_ACPI_CONTAINER) 372#define ACPI_HOTPLUG_OST 373#endif 374 375/* _OST Source Event Code (OSPM Action) */ 376#define ACPI_OST_EC_OSPM_SHUTDOWN 0x100 377#define ACPI_OST_EC_OSPM_EJECT 0x103 378#define ACPI_OST_EC_OSPM_INSERTION 0x200 379 380/* _OST General Processing Status Code */ 381#define ACPI_OST_SC_SUCCESS 0x0 382#define ACPI_OST_SC_NON_SPECIFIC_FAILURE 0x1 383#define ACPI_OST_SC_UNRECOGNIZED_NOTIFY 0x2 384 385/* _OST OS Shutdown Processing (0x100) Status Code */ 386#define ACPI_OST_SC_OS_SHUTDOWN_DENIED 0x80 387#define ACPI_OST_SC_OS_SHUTDOWN_IN_PROGRESS 0x81 388#define ACPI_OST_SC_OS_SHUTDOWN_COMPLETED 0x82 389#define ACPI_OST_SC_OS_SHUTDOWN_NOT_SUPPORTED 0x83 390 391/* _OST Ejection Request (0x3, 0x103) Status Code */ 392#define ACPI_OST_SC_EJECT_NOT_SUPPORTED 0x80 393#define ACPI_OST_SC_DEVICE_IN_USE 0x81 394#define ACPI_OST_SC_DEVICE_BUSY 0x82 395#define ACPI_OST_SC_EJECT_DEPENDENCY_BUSY 0x83 396#define ACPI_OST_SC_EJECT_IN_PROGRESS 0x84 397 398/* _OST Insertion Request (0x200) Status Code */ 399#define ACPI_OST_SC_INSERT_IN_PROGRESS 0x80 400#define ACPI_OST_SC_DRIVER_LOAD_FAILURE 0x81 401#define ACPI_OST_SC_INSERT_NOT_SUPPORTED 0x82 402 403extern void acpi_early_init(void); 404 405extern int acpi_nvs_register(__u64 start, __u64 size); 406 407extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), 408 void *data); 409 410const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, 411 const struct device *dev); 412 413static inline bool acpi_driver_match_device(struct device *dev, 414 const struct device_driver *drv) 415{ 416 return !!acpi_match_device(drv->acpi_match_table, dev); 417} 418 419int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *); 420int acpi_device_modalias(struct device *, char *, int); 421 422#define ACPI_PTR(_ptr) (_ptr) 423 424#else /* !CONFIG_ACPI */ 425 426#define acpi_disabled 1 427 428#define ACPI_COMPANION(dev) (NULL) 429#define ACPI_COMPANION_SET(dev, adev) do { } while (0) 430#define ACPI_HANDLE(dev) (NULL) 431 432static inline const char *acpi_dev_name(struct acpi_device *adev) 433{ 434 return NULL; 435} 436 437static inline void acpi_early_init(void) { } 438 439static inline int early_acpi_boot_init(void) 440{ 441 return 0; 442} 443static inline int acpi_boot_init(void) 444{ 445 return 0; 446} 447 448static inline void acpi_boot_table_init(void) 449{ 450 return; 451} 452 453static inline int acpi_mps_check(void) 454{ 455 return 0; 456} 457 458static inline int acpi_check_resource_conflict(struct resource *res) 459{ 460 return 0; 461} 462 463static inline int acpi_check_region(resource_size_t start, resource_size_t n, 464 const char *name) 465{ 466 return 0; 467} 468 469struct acpi_table_header; 470static inline int acpi_table_parse(char *id, 471 int (*handler)(struct acpi_table_header *)) 472{ 473 return -ENODEV; 474} 475 476static inline int acpi_nvs_register(__u64 start, __u64 size) 477{ 478 return 0; 479} 480 481static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), 482 void *data) 483{ 484 return 0; 485} 486 487struct acpi_device_id; 488 489static inline const struct acpi_device_id *acpi_match_device( 490 const struct acpi_device_id *ids, const struct device *dev) 491{ 492 return NULL; 493} 494 495static inline bool acpi_driver_match_device(struct device *dev, 496 const struct device_driver *drv) 497{ 498 return false; 499} 500 501static inline int acpi_device_uevent_modalias(struct device *dev, 502 struct kobj_uevent_env *env) 503{ 504 return -ENODEV; 505} 506 507static inline int acpi_device_modalias(struct device *dev, 508 char *buf, int size) 509{ 510 return -ENODEV; 511} 512 513#define ACPI_PTR(_ptr) (NULL) 514 515#endif /* !CONFIG_ACPI */ 516 517#ifdef CONFIG_ACPI 518void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, 519 u32 pm1a_ctrl, u32 pm1b_ctrl)); 520 521acpi_status acpi_os_prepare_sleep(u8 sleep_state, 522 u32 pm1a_control, u32 pm1b_control); 523 524void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state, 525 u32 val_a, u32 val_b)); 526 527acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state, 528 u32 val_a, u32 val_b); 529 530#ifdef CONFIG_X86 531void arch_reserve_mem_area(acpi_physical_address addr, size_t size); 532#else 533static inline void arch_reserve_mem_area(acpi_physical_address addr, 534 size_t size) 535{ 536} 537#endif /* CONFIG_X86 */ 538#else 539#define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0) 540#endif 541 542#if defined(CONFIG_ACPI) && defined(CONFIG_PM_RUNTIME) 543int acpi_dev_runtime_suspend(struct device *dev); 544int acpi_dev_runtime_resume(struct device *dev); 545int acpi_subsys_runtime_suspend(struct device *dev); 546int acpi_subsys_runtime_resume(struct device *dev); 547#else 548static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; } 549static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; } 550static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; } 551static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; } 552#endif 553 554#if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP) 555int acpi_dev_suspend_late(struct device *dev); 556int acpi_dev_resume_early(struct device *dev); 557int acpi_subsys_prepare(struct device *dev); 558int acpi_subsys_suspend_late(struct device *dev); 559int acpi_subsys_resume_early(struct device *dev); 560#else 561static inline int acpi_dev_suspend_late(struct device *dev) { return 0; } 562static inline int acpi_dev_resume_early(struct device *dev) { return 0; } 563static inline int acpi_subsys_prepare(struct device *dev) { return 0; } 564static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; } 565static inline int acpi_subsys_resume_early(struct device *dev) { return 0; } 566#endif 567 568#if defined(CONFIG_ACPI) && defined(CONFIG_PM) 569struct acpi_device *acpi_dev_pm_get_node(struct device *dev); 570int acpi_dev_pm_attach(struct device *dev, bool power_on); 571void acpi_dev_pm_detach(struct device *dev, bool power_off); 572#else 573static inline struct acpi_device *acpi_dev_pm_get_node(struct device *dev) 574{ 575 return NULL; 576} 577static inline int acpi_dev_pm_attach(struct device *dev, bool power_on) 578{ 579 return -ENODEV; 580} 581static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {} 582#endif 583 584#ifdef CONFIG_ACPI 585__printf(3, 4) 586void acpi_handle_printk(const char *level, acpi_handle handle, 587 const char *fmt, ...); 588#else /* !CONFIG_ACPI */ 589static inline __printf(3, 4) void 590acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {} 591#endif /* !CONFIG_ACPI */ 592 593/* 594 * acpi_handle_<level>: Print message with ACPI prefix and object path 595 * 596 * These interfaces acquire the global namespace mutex to obtain an object 597 * path. In interrupt context, it shows the object path as <n/a>. 598 */ 599#define acpi_handle_emerg(handle, fmt, ...) \ 600 acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__) 601#define acpi_handle_alert(handle, fmt, ...) \ 602 acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__) 603#define acpi_handle_crit(handle, fmt, ...) \ 604 acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__) 605#define acpi_handle_err(handle, fmt, ...) \ 606 acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__) 607#define acpi_handle_warn(handle, fmt, ...) \ 608 acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__) 609#define acpi_handle_notice(handle, fmt, ...) \ 610 acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__) 611#define acpi_handle_info(handle, fmt, ...) \ 612 acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__) 613 614/* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */ 615#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) 616#define acpi_handle_debug(handle, fmt, ...) \ 617 acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__) 618#else 619#define acpi_handle_debug(handle, fmt, ...) \ 620({ \ 621 if (0) \ 622 acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \ 623 0; \ 624}) 625#endif 626 627#endif /*_LINUX_ACPI_H*/