1 /* 2 * acpi.h - ACPI Interface 3 * 4 * Copyright (C) 2001 Paul Diefenbaugh <[email protected]> 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 *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; /* arg2/arg3 */ 300 struct acpi_buffer ret; /* free by caller if success */ 301 }; 302 303 #define OSC_QUERY_TYPE 0 304 #define OSC_SUPPORT_TYPE 1 305 #define OSC_CONTROL_TYPE 2 306 307 /* _OSC DW0 Definition */ 308 #define OSC_QUERY_ENABLE 1 309 #define OSC_REQUEST_ERROR 2 310 #define OSC_INVALID_UUID_ERROR 4 311 #define OSC_INVALID_REVISION_ERROR 8 312 #define OSC_CAPABILITIES_MASK_ERROR 16 313 314 acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context); 315 316 /* platform-wide _OSC bits */ 317 #define OSC_SB_PAD_SUPPORT 1 318 #define OSC_SB_PPC_OST_SUPPORT 2 319 #define OSC_SB_PR3_SUPPORT 4 320 #define OSC_SB_HOTPLUG_OST_SUPPORT 8 321 #define OSC_SB_APEI_SUPPORT 16 322 323 extern bool osc_sb_apei_support_acked; 324 325 /* PCI defined _OSC bits */ 326 /* _OSC DW1 Definition (OS Support Fields) */ 327 #define OSC_EXT_PCI_CONFIG_SUPPORT 1 328 #define OSC_ACTIVE_STATE_PWR_SUPPORT 2 329 #define OSC_CLOCK_PWR_CAPABILITY_SUPPORT 4 330 #define OSC_PCI_SEGMENT_GROUPS_SUPPORT 8 331 #define OSC_MSI_SUPPORT 16 332 #define OSC_PCI_SUPPORT_MASKS 0x1f 333 334 /* _OSC DW1 Definition (OS Control Fields) */ 335 #define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL 1 336 #define OSC_SHPC_NATIVE_HP_CONTROL 2 337 #define OSC_PCI_EXPRESS_PME_CONTROL 4 338 #define OSC_PCI_EXPRESS_AER_CONTROL 8 339 #define OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL 16 340 341 #define OSC_PCI_CONTROL_MASKS (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL | \ 342 OSC_SHPC_NATIVE_HP_CONTROL | \ 343 OSC_PCI_EXPRESS_PME_CONTROL | \ 344 OSC_PCI_EXPRESS_AER_CONTROL | \ 345 OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL) 346 347 #define OSC_PCI_NATIVE_HOTPLUG (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL | \ 348 OSC_SHPC_NATIVE_HP_CONTROL) 349 350 extern acpi_status acpi_pci_osc_control_set(acpi_handle handle, 351 u32 *mask, u32 req); 352 353 /* Enable _OST when all relevant hotplug operations are enabled */ 354 #if defined(CONFIG_ACPI_HOTPLUG_CPU) && \ 355 defined(CONFIG_ACPI_HOTPLUG_MEMORY) && \ 356 defined(CONFIG_ACPI_CONTAINER) 357 #define ACPI_HOTPLUG_OST 358 #endif 359 360 /* _OST Source Event Code (OSPM Action) */ 361 #define ACPI_OST_EC_OSPM_SHUTDOWN 0x100 362 #define ACPI_OST_EC_OSPM_EJECT 0x103 363 #define ACPI_OST_EC_OSPM_INSERTION 0x200 364 365 /* _OST General Processing Status Code */ 366 #define ACPI_OST_SC_SUCCESS 0x0 367 #define ACPI_OST_SC_NON_SPECIFIC_FAILURE 0x1 368 #define ACPI_OST_SC_UNRECOGNIZED_NOTIFY 0x2 369 370 /* _OST OS Shutdown Processing (0x100) Status Code */ 371 #define ACPI_OST_SC_OS_SHUTDOWN_DENIED 0x80 372 #define ACPI_OST_SC_OS_SHUTDOWN_IN_PROGRESS 0x81 373 #define ACPI_OST_SC_OS_SHUTDOWN_COMPLETED 0x82 374 #define ACPI_OST_SC_OS_SHUTDOWN_NOT_SUPPORTED 0x83 375 376 /* _OST Ejection Request (0x3, 0x103) Status Code */ 377 #define ACPI_OST_SC_EJECT_NOT_SUPPORTED 0x80 378 #define ACPI_OST_SC_DEVICE_IN_USE 0x81 379 #define ACPI_OST_SC_DEVICE_BUSY 0x82 380 #define ACPI_OST_SC_EJECT_DEPENDENCY_BUSY 0x83 381 #define ACPI_OST_SC_EJECT_IN_PROGRESS 0x84 382 383 /* _OST Insertion Request (0x200) Status Code */ 384 #define ACPI_OST_SC_INSERT_IN_PROGRESS 0x80 385 #define ACPI_OST_SC_DRIVER_LOAD_FAILURE 0x81 386 #define ACPI_OST_SC_INSERT_NOT_SUPPORTED 0x82 387 388 extern void acpi_early_init(void); 389 390 extern int acpi_nvs_register(__u64 start, __u64 size); 391 392 extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), 393 void *data); 394 395 const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, 396 const struct device *dev); 397 398 static inline bool acpi_driver_match_device(struct device *dev, 399 const struct device_driver *drv) 400 { 401 return !!acpi_match_device(drv->acpi_match_table, dev); 402 } 403 404 #define ACPI_PTR(_ptr) (_ptr) 405 406 #else /* !CONFIG_ACPI */ 407 408 #define acpi_disabled 1 409 410 static inline void acpi_early_init(void) { } 411 412 static inline int early_acpi_boot_init(void) 413 { 414 return 0; 415 } 416 static inline int acpi_boot_init(void) 417 { 418 return 0; 419 } 420 421 static inline void acpi_boot_table_init(void) 422 { 423 return; 424 } 425 426 static inline int acpi_mps_check(void) 427 { 428 return 0; 429 } 430 431 static inline int acpi_check_resource_conflict(struct resource *res) 432 { 433 return 0; 434 } 435 436 static inline int acpi_check_region(resource_size_t start, resource_size_t n, 437 const char *name) 438 { 439 return 0; 440 } 441 442 struct acpi_table_header; 443 static inline int acpi_table_parse(char *id, 444 int (*handler)(struct acpi_table_header *)) 445 { 446 return -1; 447 } 448 449 static inline int acpi_nvs_register(__u64 start, __u64 size) 450 { 451 return 0; 452 } 453 454 static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), 455 void *data) 456 { 457 return 0; 458 } 459 460 struct acpi_device_id; 461 462 static inline const struct acpi_device_id *acpi_match_device( 463 const struct acpi_device_id *ids, const struct device *dev) 464 { 465 return NULL; 466 } 467 468 static inline bool acpi_driver_match_device(struct device *dev, 469 const struct device_driver *drv) 470 { 471 return false; 472 } 473 474 #define ACPI_PTR(_ptr) (NULL) 475 476 #endif /* !CONFIG_ACPI */ 477 478 #ifdef CONFIG_ACPI 479 void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, 480 u32 pm1a_ctrl, u32 pm1b_ctrl)); 481 482 acpi_status acpi_os_prepare_sleep(u8 sleep_state, 483 u32 pm1a_control, u32 pm1b_control); 484 #ifdef CONFIG_X86 485 void arch_reserve_mem_area(acpi_physical_address addr, size_t size); 486 #else 487 static inline void arch_reserve_mem_area(acpi_physical_address addr, 488 size_t size) 489 { 490 } 491 #endif /* CONFIG_X86 */ 492 #else 493 #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0) 494 #endif 495 496 #if defined(CONFIG_ACPI) && defined(CONFIG_PM_RUNTIME) 497 int acpi_dev_runtime_suspend(struct device *dev); 498 int acpi_dev_runtime_resume(struct device *dev); 499 int acpi_subsys_runtime_suspend(struct device *dev); 500 int acpi_subsys_runtime_resume(struct device *dev); 501 #else 502 static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; } 503 static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; } 504 static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; } 505 static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; } 506 #endif 507 508 #if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP) 509 int acpi_dev_suspend_late(struct device *dev); 510 int acpi_dev_resume_early(struct device *dev); 511 int acpi_subsys_prepare(struct device *dev); 512 int acpi_subsys_suspend_late(struct device *dev); 513 int acpi_subsys_resume_early(struct device *dev); 514 #else 515 static inline int acpi_dev_suspend_late(struct device *dev) { return 0; } 516 static inline int acpi_dev_resume_early(struct device *dev) { return 0; } 517 static inline int acpi_subsys_prepare(struct device *dev) { return 0; } 518 static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; } 519 static inline int acpi_subsys_resume_early(struct device *dev) { return 0; } 520 #endif 521 522 #if defined(CONFIG_ACPI) && defined(CONFIG_PM) 523 struct acpi_device *acpi_dev_pm_get_node(struct device *dev); 524 int acpi_dev_pm_attach(struct device *dev, bool power_on); 525 void acpi_dev_pm_detach(struct device *dev, bool power_off); 526 #else 527 static inline struct acpi_device *acpi_dev_pm_get_node(struct device *dev) 528 { 529 return NULL; 530 } 531 static inline int acpi_dev_pm_attach(struct device *dev, bool power_on) 532 { 533 return -ENODEV; 534 } 535 static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {} 536 #endif 537 538 #ifdef CONFIG_ACPI 539 __printf(3, 4) 540 void acpi_handle_printk(const char *level, acpi_handle handle, 541 const char *fmt, ...); 542 #else /* !CONFIG_ACPI */ 543 static inline __printf(3, 4) void 544 acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {} 545 #endif /* !CONFIG_ACPI */ 546 547 /* 548 * acpi_handle_<level>: Print message with ACPI prefix and object path 549 * 550 * These interfaces acquire the global namespace mutex to obtain an object 551 * path. In interrupt context, it shows the object path as <n/a>. 552 */ 553 #define acpi_handle_emerg(handle, fmt, ...) \ 554 acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__) 555 #define acpi_handle_alert(handle, fmt, ...) \ 556 acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__) 557 #define acpi_handle_crit(handle, fmt, ...) \ 558 acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__) 559 #define acpi_handle_err(handle, fmt, ...) \ 560 acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__) 561 #define acpi_handle_warn(handle, fmt, ...) \ 562 acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__) 563 #define acpi_handle_notice(handle, fmt, ...) \ 564 acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__) 565 #define acpi_handle_info(handle, fmt, ...) \ 566 acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__) 567 568 /* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */ 569 #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) 570 #define acpi_handle_debug(handle, fmt, ...) \ 571 acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__) 572 #else 573 #define acpi_handle_debug(handle, fmt, ...) \ 574 ({ \ 575 if (0) \ 576 acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \ 577 0; \ 578 }) 579 #endif 580 581 #endif /*_LINUX_ACPI_H*/ 582