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 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 19 */ 20 21 #ifndef _LINUX_ACPI_H 22 #define _LINUX_ACPI_H 23 24 #include <linux/errno.h> 25 #include <linux/ioport.h> /* for struct resource */ 26 #include <linux/resource_ext.h> 27 #include <linux/device.h> 28 #include <linux/property.h> 29 #include <linux/uuid.h> 30 31 #ifndef _LINUX 32 #define _LINUX 33 #endif 34 #include <acpi/acpi.h> 35 36 #ifdef CONFIG_ACPI 37 38 #include <linux/list.h> 39 #include <linux/mod_devicetable.h> 40 #include <linux/dynamic_debug.h> 41 #include <linux/module.h> 42 #include <linux/mutex.h> 43 44 #include <acpi/acpi_bus.h> 45 #include <acpi/acpi_drivers.h> 46 #include <acpi/acpi_numa.h> 47 #include <acpi/acpi_io.h> 48 #include <asm/acpi.h> 49 50 static inline acpi_handle acpi_device_handle(struct acpi_device *adev) 51 { 52 return adev ? adev->handle : NULL; 53 } 54 55 #define ACPI_COMPANION(dev) to_acpi_device_node((dev)->fwnode) 56 #define ACPI_COMPANION_SET(dev, adev) set_primary_fwnode(dev, (adev) ? \ 57 acpi_fwnode_handle(adev) : NULL) 58 #define ACPI_HANDLE(dev) acpi_device_handle(ACPI_COMPANION(dev)) 59 60 static inline struct fwnode_handle *acpi_alloc_fwnode_static(void) 61 { 62 struct fwnode_handle *fwnode; 63 64 fwnode = kzalloc(sizeof(struct fwnode_handle), GFP_KERNEL); 65 if (!fwnode) 66 return NULL; 67 68 fwnode->type = FWNODE_ACPI_STATIC; 69 70 return fwnode; 71 } 72 73 static inline void acpi_free_fwnode_static(struct fwnode_handle *fwnode) 74 { 75 if (WARN_ON(!fwnode || fwnode->type != FWNODE_ACPI_STATIC)) 76 return; 77 78 kfree(fwnode); 79 } 80 81 /** 82 * ACPI_DEVICE_CLASS - macro used to describe an ACPI device with 83 * the PCI-defined class-code information 84 * 85 * @_cls : the class, subclass, prog-if triple for this device 86 * @_msk : the class mask for this device 87 * 88 * This macro is used to create a struct acpi_device_id that matches a 89 * specific PCI class. The .id and .driver_data fields will be left 90 * initialized with the default value. 91 */ 92 #define ACPI_DEVICE_CLASS(_cls, _msk) .cls = (_cls), .cls_msk = (_msk), 93 94 static inline bool has_acpi_companion(struct device *dev) 95 { 96 return is_acpi_device_node(dev->fwnode); 97 } 98 99 static inline void acpi_preset_companion(struct device *dev, 100 struct acpi_device *parent, u64 addr) 101 { 102 ACPI_COMPANION_SET(dev, acpi_find_child_device(parent, addr, NULL)); 103 } 104 105 static inline const char *acpi_dev_name(struct acpi_device *adev) 106 { 107 return dev_name(&adev->dev); 108 } 109 110 struct device *acpi_get_first_physical_node(struct acpi_device *adev); 111 112 enum acpi_irq_model_id { 113 ACPI_IRQ_MODEL_PIC = 0, 114 ACPI_IRQ_MODEL_IOAPIC, 115 ACPI_IRQ_MODEL_IOSAPIC, 116 ACPI_IRQ_MODEL_PLATFORM, 117 ACPI_IRQ_MODEL_GIC, 118 ACPI_IRQ_MODEL_COUNT 119 }; 120 121 extern enum acpi_irq_model_id acpi_irq_model; 122 123 enum acpi_interrupt_id { 124 ACPI_INTERRUPT_PMI = 1, 125 ACPI_INTERRUPT_INIT, 126 ACPI_INTERRUPT_CPEI, 127 ACPI_INTERRUPT_COUNT 128 }; 129 130 #define ACPI_SPACE_MEM 0 131 132 enum acpi_address_range_id { 133 ACPI_ADDRESS_RANGE_MEMORY = 1, 134 ACPI_ADDRESS_RANGE_RESERVED = 2, 135 ACPI_ADDRESS_RANGE_ACPI = 3, 136 ACPI_ADDRESS_RANGE_NVS = 4, 137 ACPI_ADDRESS_RANGE_COUNT 138 }; 139 140 141 /* Table Handlers */ 142 143 typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table); 144 145 typedef int (*acpi_tbl_entry_handler)(struct acpi_subtable_header *header, 146 const unsigned long end); 147 148 /* Debugger support */ 149 150 struct acpi_debugger_ops { 151 int (*create_thread)(acpi_osd_exec_callback function, void *context); 152 ssize_t (*write_log)(const char *msg); 153 ssize_t (*read_cmd)(char *buffer, size_t length); 154 int (*wait_command_ready)(bool single_step, char *buffer, size_t length); 155 int (*notify_command_complete)(void); 156 }; 157 158 struct acpi_debugger { 159 const struct acpi_debugger_ops *ops; 160 struct module *owner; 161 struct mutex lock; 162 }; 163 164 #ifdef CONFIG_ACPI_DEBUGGER 165 int __init acpi_debugger_init(void); 166 int acpi_register_debugger(struct module *owner, 167 const struct acpi_debugger_ops *ops); 168 void acpi_unregister_debugger(const struct acpi_debugger_ops *ops); 169 int acpi_debugger_create_thread(acpi_osd_exec_callback function, void *context); 170 ssize_t acpi_debugger_write_log(const char *msg); 171 ssize_t acpi_debugger_read_cmd(char *buffer, size_t buffer_length); 172 int acpi_debugger_wait_command_ready(void); 173 int acpi_debugger_notify_command_complete(void); 174 #else 175 static inline int acpi_debugger_init(void) 176 { 177 return -ENODEV; 178 } 179 180 static inline int acpi_register_debugger(struct module *owner, 181 const struct acpi_debugger_ops *ops) 182 { 183 return -ENODEV; 184 } 185 186 static inline void acpi_unregister_debugger(const struct acpi_debugger_ops *ops) 187 { 188 } 189 190 static inline int acpi_debugger_create_thread(acpi_osd_exec_callback function, 191 void *context) 192 { 193 return -ENODEV; 194 } 195 196 static inline int acpi_debugger_write_log(const char *msg) 197 { 198 return -ENODEV; 199 } 200 201 static inline int acpi_debugger_read_cmd(char *buffer, u32 buffer_length) 202 { 203 return -ENODEV; 204 } 205 206 static inline int acpi_debugger_wait_command_ready(void) 207 { 208 return -ENODEV; 209 } 210 211 static inline int acpi_debugger_notify_command_complete(void) 212 { 213 return -ENODEV; 214 } 215 #endif 216 217 #define BAD_MADT_ENTRY(entry, end) ( \ 218 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ 219 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) 220 221 struct acpi_subtable_proc { 222 int id; 223 acpi_tbl_entry_handler handler; 224 int count; 225 }; 226 227 char * __acpi_map_table (unsigned long phys_addr, unsigned long size); 228 void __acpi_unmap_table(char *map, unsigned long size); 229 int early_acpi_boot_init(void); 230 int acpi_boot_init (void); 231 void acpi_boot_table_init (void); 232 int acpi_mps_check (void); 233 int acpi_numa_init (void); 234 235 int acpi_table_init (void); 236 int acpi_table_parse(char *id, acpi_tbl_table_handler handler); 237 int __init acpi_table_parse_entries(char *id, unsigned long table_size, 238 int entry_id, 239 acpi_tbl_entry_handler handler, 240 unsigned int max_entries); 241 int __init acpi_table_parse_entries_array(char *id, unsigned long table_size, 242 struct acpi_subtable_proc *proc, int proc_num, 243 unsigned int max_entries); 244 int acpi_table_parse_madt(enum acpi_madt_type id, 245 acpi_tbl_entry_handler handler, 246 unsigned int max_entries); 247 int acpi_parse_mcfg (struct acpi_table_header *header); 248 void acpi_table_print_madt_entry (struct acpi_subtable_header *madt); 249 250 /* the following numa functions are architecture-dependent */ 251 void acpi_numa_slit_init (struct acpi_table_slit *slit); 252 253 #if defined(CONFIG_X86) || defined(CONFIG_IA64) 254 void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa); 255 #else 256 static inline void 257 acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) { } 258 #endif 259 260 void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa); 261 262 #ifdef CONFIG_ARM64 263 void acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa); 264 #else 265 static inline void 266 acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa) { } 267 #endif 268 269 int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma); 270 271 #ifndef PHYS_CPUID_INVALID 272 typedef u32 phys_cpuid_t; 273 #define PHYS_CPUID_INVALID (phys_cpuid_t)(-1) 274 #endif 275 276 static inline bool invalid_logical_cpuid(u32 cpuid) 277 { 278 return (int)cpuid < 0; 279 } 280 281 static inline bool invalid_phys_cpuid(phys_cpuid_t phys_id) 282 { 283 return phys_id == PHYS_CPUID_INVALID; 284 } 285 286 /* Validate the processor object's proc_id */ 287 bool acpi_duplicate_processor_id(int proc_id); 288 289 #ifdef CONFIG_ACPI_HOTPLUG_CPU 290 /* Arch dependent functions for cpu hotplug support */ 291 int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 acpi_id, 292 int *pcpu); 293 int acpi_unmap_cpu(int cpu); 294 #endif /* CONFIG_ACPI_HOTPLUG_CPU */ 295 296 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 297 int acpi_get_ioapic_id(acpi_handle handle, u32 gsi_base, u64 *phys_addr); 298 #endif 299 300 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base); 301 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base); 302 int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base); 303 void acpi_irq_stats_init(void); 304 extern u32 acpi_irq_handled; 305 extern u32 acpi_irq_not_handled; 306 extern unsigned int acpi_sci_irq; 307 extern bool acpi_no_s5; 308 #define INVALID_ACPI_IRQ ((unsigned)-1) 309 static inline bool acpi_sci_irq_valid(void) 310 { 311 return acpi_sci_irq != INVALID_ACPI_IRQ; 312 } 313 314 extern int sbf_port; 315 extern unsigned long acpi_realmode_flags; 316 317 int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity); 318 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq); 319 int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi); 320 321 void acpi_set_irq_model(enum acpi_irq_model_id model, 322 struct fwnode_handle *fwnode); 323 324 #ifdef CONFIG_X86_IO_APIC 325 extern int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity); 326 #else 327 #define acpi_get_override_irq(gsi, trigger, polarity) (-1) 328 #endif 329 /* 330 * This function undoes the effect of one call to acpi_register_gsi(). 331 * If this matches the last registration, any IRQ resources for gsi 332 * are freed. 333 */ 334 void acpi_unregister_gsi (u32 gsi); 335 336 struct pci_dev; 337 338 int acpi_pci_irq_enable (struct pci_dev *dev); 339 void acpi_penalize_isa_irq(int irq, int active); 340 bool acpi_isa_irq_available(int irq); 341 void acpi_penalize_sci_irq(int irq, int trigger, int polarity); 342 void acpi_pci_irq_disable (struct pci_dev *dev); 343 344 extern int ec_read(u8 addr, u8 *val); 345 extern int ec_write(u8 addr, u8 val); 346 extern int ec_transaction(u8 command, 347 const u8 *wdata, unsigned wdata_len, 348 u8 *rdata, unsigned rdata_len); 349 extern acpi_handle ec_get_handle(void); 350 351 extern bool acpi_is_pnp_device(struct acpi_device *); 352 353 #if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE) 354 355 typedef void (*wmi_notify_handler) (u32 value, void *context); 356 357 extern acpi_status wmi_evaluate_method(const char *guid, u8 instance, 358 u32 method_id, 359 const struct acpi_buffer *in, 360 struct acpi_buffer *out); 361 extern acpi_status wmi_query_block(const char *guid, u8 instance, 362 struct acpi_buffer *out); 363 extern acpi_status wmi_set_block(const char *guid, u8 instance, 364 const struct acpi_buffer *in); 365 extern acpi_status wmi_install_notify_handler(const char *guid, 366 wmi_notify_handler handler, void *data); 367 extern acpi_status wmi_remove_notify_handler(const char *guid); 368 extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out); 369 extern bool wmi_has_guid(const char *guid); 370 371 #endif /* CONFIG_ACPI_WMI */ 372 373 #define ACPI_VIDEO_OUTPUT_SWITCHING 0x0001 374 #define ACPI_VIDEO_DEVICE_POSTING 0x0002 375 #define ACPI_VIDEO_ROM_AVAILABLE 0x0004 376 #define ACPI_VIDEO_BACKLIGHT 0x0008 377 #define ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR 0x0010 378 #define ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO 0x0020 379 #define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR 0x0040 380 #define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO 0x0080 381 #define ACPI_VIDEO_BACKLIGHT_DMI_VENDOR 0x0100 382 #define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO 0x0200 383 #define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR 0x0400 384 #define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO 0x0800 385 386 extern char acpi_video_backlight_string[]; 387 extern long acpi_is_video_device(acpi_handle handle); 388 extern int acpi_blacklisted(void); 389 extern void acpi_osi_setup(char *str); 390 extern bool acpi_osi_is_win8(void); 391 392 #ifdef CONFIG_ACPI_NUMA 393 int acpi_map_pxm_to_online_node(int pxm); 394 int acpi_get_node(acpi_handle handle); 395 #else 396 static inline int acpi_map_pxm_to_online_node(int pxm) 397 { 398 return 0; 399 } 400 static inline int acpi_get_node(acpi_handle handle) 401 { 402 return 0; 403 } 404 #endif 405 extern int acpi_paddr_to_node(u64 start_addr, u64 size); 406 407 extern int pnpacpi_disabled; 408 409 #define PXM_INVAL (-1) 410 411 bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res); 412 bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res); 413 bool acpi_dev_resource_address_space(struct acpi_resource *ares, 414 struct resource_win *win); 415 bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares, 416 struct resource_win *win); 417 unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable); 418 unsigned int acpi_dev_get_irq_type(int triggering, int polarity); 419 bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, 420 struct resource *res); 421 422 void acpi_dev_free_resource_list(struct list_head *list); 423 int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list, 424 int (*preproc)(struct acpi_resource *, void *), 425 void *preproc_data); 426 int acpi_dev_filter_resource_type(struct acpi_resource *ares, 427 unsigned long types); 428 429 static inline int acpi_dev_filter_resource_type_cb(struct acpi_resource *ares, 430 void *arg) 431 { 432 return acpi_dev_filter_resource_type(ares, (unsigned long)arg); 433 } 434 435 struct acpi_device *acpi_resource_consumer(struct resource *res); 436 437 int acpi_check_resource_conflict(const struct resource *res); 438 439 int acpi_check_region(resource_size_t start, resource_size_t n, 440 const char *name); 441 442 int acpi_resources_are_enforced(void); 443 444 #ifdef CONFIG_HIBERNATION 445 void __init acpi_no_s4_hw_signature(void); 446 #endif 447 448 #ifdef CONFIG_PM_SLEEP 449 void __init acpi_old_suspend_ordering(void); 450 void __init acpi_nvs_nosave(void); 451 void __init acpi_nvs_nosave_s3(void); 452 #endif /* CONFIG_PM_SLEEP */ 453 454 struct acpi_osc_context { 455 char *uuid_str; /* UUID string */ 456 int rev; 457 struct acpi_buffer cap; /* list of DWORD capabilities */ 458 struct acpi_buffer ret; /* free by caller if success */ 459 }; 460 461 acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context); 462 463 /* Indexes into _OSC Capabilities Buffer (DWORDs 2 & 3 are device-specific) */ 464 #define OSC_QUERY_DWORD 0 /* DWORD 1 */ 465 #define OSC_SUPPORT_DWORD 1 /* DWORD 2 */ 466 #define OSC_CONTROL_DWORD 2 /* DWORD 3 */ 467 468 /* _OSC Capabilities DWORD 1: Query/Control and Error Returns (generic) */ 469 #define OSC_QUERY_ENABLE 0x00000001 /* input */ 470 #define OSC_REQUEST_ERROR 0x00000002 /* return */ 471 #define OSC_INVALID_UUID_ERROR 0x00000004 /* return */ 472 #define OSC_INVALID_REVISION_ERROR 0x00000008 /* return */ 473 #define OSC_CAPABILITIES_MASK_ERROR 0x00000010 /* return */ 474 475 /* Platform-Wide Capabilities _OSC: Capabilities DWORD 2: Support Field */ 476 #define OSC_SB_PAD_SUPPORT 0x00000001 477 #define OSC_SB_PPC_OST_SUPPORT 0x00000002 478 #define OSC_SB_PR3_SUPPORT 0x00000004 479 #define OSC_SB_HOTPLUG_OST_SUPPORT 0x00000008 480 #define OSC_SB_APEI_SUPPORT 0x00000010 481 #define OSC_SB_CPC_SUPPORT 0x00000020 482 #define OSC_SB_CPCV2_SUPPORT 0x00000040 483 #define OSC_SB_PCLPI_SUPPORT 0x00000080 484 #define OSC_SB_OSLPI_SUPPORT 0x00000100 485 #define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT 0x00001000 486 487 extern bool osc_sb_apei_support_acked; 488 extern bool osc_pc_lpi_support_confirmed; 489 490 /* PCI Host Bridge _OSC: Capabilities DWORD 2: Support Field */ 491 #define OSC_PCI_EXT_CONFIG_SUPPORT 0x00000001 492 #define OSC_PCI_ASPM_SUPPORT 0x00000002 493 #define OSC_PCI_CLOCK_PM_SUPPORT 0x00000004 494 #define OSC_PCI_SEGMENT_GROUPS_SUPPORT 0x00000008 495 #define OSC_PCI_MSI_SUPPORT 0x00000010 496 #define OSC_PCI_SUPPORT_MASKS 0x0000001f 497 498 /* PCI Host Bridge _OSC: Capabilities DWORD 3: Control Field */ 499 #define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL 0x00000001 500 #define OSC_PCI_SHPC_NATIVE_HP_CONTROL 0x00000002 501 #define OSC_PCI_EXPRESS_PME_CONTROL 0x00000004 502 #define OSC_PCI_EXPRESS_AER_CONTROL 0x00000008 503 #define OSC_PCI_EXPRESS_CAPABILITY_CONTROL 0x00000010 504 #define OSC_PCI_CONTROL_MASKS 0x0000001f 505 506 #define ACPI_GSB_ACCESS_ATTRIB_QUICK 0x00000002 507 #define ACPI_GSB_ACCESS_ATTRIB_SEND_RCV 0x00000004 508 #define ACPI_GSB_ACCESS_ATTRIB_BYTE 0x00000006 509 #define ACPI_GSB_ACCESS_ATTRIB_WORD 0x00000008 510 #define ACPI_GSB_ACCESS_ATTRIB_BLOCK 0x0000000A 511 #define ACPI_GSB_ACCESS_ATTRIB_MULTIBYTE 0x0000000B 512 #define ACPI_GSB_ACCESS_ATTRIB_WORD_CALL 0x0000000C 513 #define ACPI_GSB_ACCESS_ATTRIB_BLOCK_CALL 0x0000000D 514 #define ACPI_GSB_ACCESS_ATTRIB_RAW_BYTES 0x0000000E 515 #define ACPI_GSB_ACCESS_ATTRIB_RAW_PROCESS 0x0000000F 516 517 extern acpi_status acpi_pci_osc_control_set(acpi_handle handle, 518 u32 *mask, u32 req); 519 520 /* Enable _OST when all relevant hotplug operations are enabled */ 521 #if defined(CONFIG_ACPI_HOTPLUG_CPU) && \ 522 defined(CONFIG_ACPI_HOTPLUG_MEMORY) && \ 523 defined(CONFIG_ACPI_CONTAINER) 524 #define ACPI_HOTPLUG_OST 525 #endif 526 527 /* _OST Source Event Code (OSPM Action) */ 528 #define ACPI_OST_EC_OSPM_SHUTDOWN 0x100 529 #define ACPI_OST_EC_OSPM_EJECT 0x103 530 #define ACPI_OST_EC_OSPM_INSERTION 0x200 531 532 /* _OST General Processing Status Code */ 533 #define ACPI_OST_SC_SUCCESS 0x0 534 #define ACPI_OST_SC_NON_SPECIFIC_FAILURE 0x1 535 #define ACPI_OST_SC_UNRECOGNIZED_NOTIFY 0x2 536 537 /* _OST OS Shutdown Processing (0x100) Status Code */ 538 #define ACPI_OST_SC_OS_SHUTDOWN_DENIED 0x80 539 #define ACPI_OST_SC_OS_SHUTDOWN_IN_PROGRESS 0x81 540 #define ACPI_OST_SC_OS_SHUTDOWN_COMPLETED 0x82 541 #define ACPI_OST_SC_OS_SHUTDOWN_NOT_SUPPORTED 0x83 542 543 /* _OST Ejection Request (0x3, 0x103) Status Code */ 544 #define ACPI_OST_SC_EJECT_NOT_SUPPORTED 0x80 545 #define ACPI_OST_SC_DEVICE_IN_USE 0x81 546 #define ACPI_OST_SC_DEVICE_BUSY 0x82 547 #define ACPI_OST_SC_EJECT_DEPENDENCY_BUSY 0x83 548 #define ACPI_OST_SC_EJECT_IN_PROGRESS 0x84 549 550 /* _OST Insertion Request (0x200) Status Code */ 551 #define ACPI_OST_SC_INSERT_IN_PROGRESS 0x80 552 #define ACPI_OST_SC_DRIVER_LOAD_FAILURE 0x81 553 #define ACPI_OST_SC_INSERT_NOT_SUPPORTED 0x82 554 555 extern void acpi_early_init(void); 556 extern void acpi_subsystem_init(void); 557 558 extern int acpi_nvs_register(__u64 start, __u64 size); 559 560 extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), 561 void *data); 562 563 const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, 564 const struct device *dev); 565 566 extern bool acpi_driver_match_device(struct device *dev, 567 const struct device_driver *drv); 568 int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *); 569 int acpi_device_modalias(struct device *, char *, int); 570 void acpi_walk_dep_device_list(acpi_handle handle); 571 572 struct platform_device *acpi_create_platform_device(struct acpi_device *, 573 struct property_entry *); 574 #define ACPI_PTR(_ptr) (_ptr) 575 576 static inline void acpi_device_set_enumerated(struct acpi_device *adev) 577 { 578 adev->flags.visited = true; 579 } 580 581 static inline void acpi_device_clear_enumerated(struct acpi_device *adev) 582 { 583 adev->flags.visited = false; 584 } 585 586 enum acpi_reconfig_event { 587 ACPI_RECONFIG_DEVICE_ADD = 0, 588 ACPI_RECONFIG_DEVICE_REMOVE, 589 }; 590 591 int acpi_reconfig_notifier_register(struct notifier_block *nb); 592 int acpi_reconfig_notifier_unregister(struct notifier_block *nb); 593 594 #ifdef CONFIG_ACPI_GTDT 595 int acpi_gtdt_init(struct acpi_table_header *table, int *platform_timer_count); 596 int acpi_gtdt_map_ppi(int type); 597 bool acpi_gtdt_c3stop(int type); 598 int acpi_arch_timer_mem_init(struct arch_timer_mem *timer_mem, int *timer_count); 599 #endif 600 601 #else /* !CONFIG_ACPI */ 602 603 #define acpi_disabled 1 604 605 #define ACPI_COMPANION(dev) (NULL) 606 #define ACPI_COMPANION_SET(dev, adev) do { } while (0) 607 #define ACPI_HANDLE(dev) (NULL) 608 #define ACPI_DEVICE_CLASS(_cls, _msk) .cls = (0), .cls_msk = (0), 609 610 struct fwnode_handle; 611 612 static inline bool acpi_dev_found(const char *hid) 613 { 614 return false; 615 } 616 617 static inline bool acpi_dev_present(const char *hid, const char *uid, s64 hrv) 618 { 619 return false; 620 } 621 622 static inline bool is_acpi_node(struct fwnode_handle *fwnode) 623 { 624 return false; 625 } 626 627 static inline bool is_acpi_device_node(struct fwnode_handle *fwnode) 628 { 629 return false; 630 } 631 632 static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode) 633 { 634 return NULL; 635 } 636 637 static inline bool is_acpi_data_node(struct fwnode_handle *fwnode) 638 { 639 return false; 640 } 641 642 static inline struct acpi_data_node *to_acpi_data_node(struct fwnode_handle *fwnode) 643 { 644 return NULL; 645 } 646 647 static inline bool acpi_data_node_match(struct fwnode_handle *fwnode, 648 const char *name) 649 { 650 return false; 651 } 652 653 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 654 { 655 return NULL; 656 } 657 658 static inline bool has_acpi_companion(struct device *dev) 659 { 660 return false; 661 } 662 663 static inline void acpi_preset_companion(struct device *dev, 664 struct acpi_device *parent, u64 addr) 665 { 666 } 667 668 static inline const char *acpi_dev_name(struct acpi_device *adev) 669 { 670 return NULL; 671 } 672 673 static inline struct device *acpi_get_first_physical_node(struct acpi_device *adev) 674 { 675 return NULL; 676 } 677 678 static inline void acpi_early_init(void) { } 679 static inline void acpi_subsystem_init(void) { } 680 681 static inline int early_acpi_boot_init(void) 682 { 683 return 0; 684 } 685 static inline int acpi_boot_init(void) 686 { 687 return 0; 688 } 689 690 static inline void acpi_boot_table_init(void) 691 { 692 return; 693 } 694 695 static inline int acpi_mps_check(void) 696 { 697 return 0; 698 } 699 700 static inline int acpi_check_resource_conflict(struct resource *res) 701 { 702 return 0; 703 } 704 705 static inline int acpi_check_region(resource_size_t start, resource_size_t n, 706 const char *name) 707 { 708 return 0; 709 } 710 711 struct acpi_table_header; 712 static inline int acpi_table_parse(char *id, 713 int (*handler)(struct acpi_table_header *)) 714 { 715 return -ENODEV; 716 } 717 718 static inline int acpi_nvs_register(__u64 start, __u64 size) 719 { 720 return 0; 721 } 722 723 static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), 724 void *data) 725 { 726 return 0; 727 } 728 729 struct acpi_device_id; 730 731 static inline const struct acpi_device_id *acpi_match_device( 732 const struct acpi_device_id *ids, const struct device *dev) 733 { 734 return NULL; 735 } 736 737 static inline bool acpi_driver_match_device(struct device *dev, 738 const struct device_driver *drv) 739 { 740 return false; 741 } 742 743 static inline union acpi_object *acpi_evaluate_dsm(acpi_handle handle, 744 const guid_t *guid, 745 int rev, int func, 746 union acpi_object *argv4) 747 { 748 return NULL; 749 } 750 751 static inline int acpi_device_uevent_modalias(struct device *dev, 752 struct kobj_uevent_env *env) 753 { 754 return -ENODEV; 755 } 756 757 static inline int acpi_device_modalias(struct device *dev, 758 char *buf, int size) 759 { 760 return -ENODEV; 761 } 762 763 static inline bool acpi_dma_supported(struct acpi_device *adev) 764 { 765 return false; 766 } 767 768 static inline enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev) 769 { 770 return DEV_DMA_NOT_SUPPORTED; 771 } 772 773 static inline int acpi_dma_configure(struct device *dev, 774 enum dev_dma_attr attr) 775 { 776 return 0; 777 } 778 779 static inline void acpi_dma_deconfigure(struct device *dev) { } 780 781 #define ACPI_PTR(_ptr) (NULL) 782 783 static inline void acpi_device_set_enumerated(struct acpi_device *adev) 784 { 785 } 786 787 static inline void acpi_device_clear_enumerated(struct acpi_device *adev) 788 { 789 } 790 791 static inline int acpi_reconfig_notifier_register(struct notifier_block *nb) 792 { 793 return -EINVAL; 794 } 795 796 static inline int acpi_reconfig_notifier_unregister(struct notifier_block *nb) 797 { 798 return -EINVAL; 799 } 800 801 static inline struct acpi_device *acpi_resource_consumer(struct resource *res) 802 { 803 return NULL; 804 } 805 806 #endif /* !CONFIG_ACPI */ 807 808 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 809 int acpi_ioapic_add(acpi_handle root); 810 #else 811 static inline int acpi_ioapic_add(acpi_handle root) { return 0; } 812 #endif 813 814 #ifdef CONFIG_ACPI 815 void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, 816 u32 pm1a_ctrl, u32 pm1b_ctrl)); 817 818 acpi_status acpi_os_prepare_sleep(u8 sleep_state, 819 u32 pm1a_control, u32 pm1b_control); 820 821 void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state, 822 u32 val_a, u32 val_b)); 823 824 acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state, 825 u32 val_a, u32 val_b); 826 827 #ifdef CONFIG_X86 828 void arch_reserve_mem_area(acpi_physical_address addr, size_t size); 829 #else 830 static inline void arch_reserve_mem_area(acpi_physical_address addr, 831 size_t size) 832 { 833 } 834 #endif /* CONFIG_X86 */ 835 #else 836 #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0) 837 #endif 838 839 #if defined(CONFIG_ACPI) && defined(CONFIG_PM) 840 int acpi_dev_runtime_suspend(struct device *dev); 841 int acpi_dev_runtime_resume(struct device *dev); 842 int acpi_subsys_runtime_suspend(struct device *dev); 843 int acpi_subsys_runtime_resume(struct device *dev); 844 struct acpi_device *acpi_dev_pm_get_node(struct device *dev); 845 int acpi_dev_pm_attach(struct device *dev, bool power_on); 846 #else 847 static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; } 848 static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; } 849 static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; } 850 static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; } 851 static inline struct acpi_device *acpi_dev_pm_get_node(struct device *dev) 852 { 853 return NULL; 854 } 855 static inline int acpi_dev_pm_attach(struct device *dev, bool power_on) 856 { 857 return -ENODEV; 858 } 859 #endif 860 861 #if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP) 862 int acpi_dev_suspend_late(struct device *dev); 863 int acpi_dev_resume_early(struct device *dev); 864 int acpi_subsys_prepare(struct device *dev); 865 void acpi_subsys_complete(struct device *dev); 866 int acpi_subsys_suspend_late(struct device *dev); 867 int acpi_subsys_resume_early(struct device *dev); 868 int acpi_subsys_suspend(struct device *dev); 869 int acpi_subsys_freeze(struct device *dev); 870 #else 871 static inline int acpi_dev_suspend_late(struct device *dev) { return 0; } 872 static inline int acpi_dev_resume_early(struct device *dev) { return 0; } 873 static inline int acpi_subsys_prepare(struct device *dev) { return 0; } 874 static inline void acpi_subsys_complete(struct device *dev) {} 875 static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; } 876 static inline int acpi_subsys_resume_early(struct device *dev) { return 0; } 877 static inline int acpi_subsys_suspend(struct device *dev) { return 0; } 878 static inline int acpi_subsys_freeze(struct device *dev) { return 0; } 879 #endif 880 881 #ifdef CONFIG_ACPI 882 __printf(3, 4) 883 void acpi_handle_printk(const char *level, acpi_handle handle, 884 const char *fmt, ...); 885 #else /* !CONFIG_ACPI */ 886 static inline __printf(3, 4) void 887 acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {} 888 #endif /* !CONFIG_ACPI */ 889 890 #if defined(CONFIG_ACPI) && defined(CONFIG_DYNAMIC_DEBUG) 891 __printf(3, 4) 892 void __acpi_handle_debug(struct _ddebug *descriptor, acpi_handle handle, const char *fmt, ...); 893 #else 894 #define __acpi_handle_debug(descriptor, handle, fmt, ...) \ 895 acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); 896 #endif 897 898 /* 899 * acpi_handle_<level>: Print message with ACPI prefix and object path 900 * 901 * These interfaces acquire the global namespace mutex to obtain an object 902 * path. In interrupt context, it shows the object path as <n/a>. 903 */ 904 #define acpi_handle_emerg(handle, fmt, ...) \ 905 acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__) 906 #define acpi_handle_alert(handle, fmt, ...) \ 907 acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__) 908 #define acpi_handle_crit(handle, fmt, ...) \ 909 acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__) 910 #define acpi_handle_err(handle, fmt, ...) \ 911 acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__) 912 #define acpi_handle_warn(handle, fmt, ...) \ 913 acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__) 914 #define acpi_handle_notice(handle, fmt, ...) \ 915 acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__) 916 #define acpi_handle_info(handle, fmt, ...) \ 917 acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__) 918 919 #if defined(DEBUG) 920 #define acpi_handle_debug(handle, fmt, ...) \ 921 acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__) 922 #else 923 #if defined(CONFIG_DYNAMIC_DEBUG) 924 #define acpi_handle_debug(handle, fmt, ...) \ 925 do { \ 926 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ 927 if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ 928 __acpi_handle_debug(&descriptor, handle, pr_fmt(fmt), \ 929 ##__VA_ARGS__); \ 930 } while (0) 931 #else 932 #define acpi_handle_debug(handle, fmt, ...) \ 933 ({ \ 934 if (0) \ 935 acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \ 936 0; \ 937 }) 938 #endif 939 #endif 940 941 struct acpi_gpio_params { 942 unsigned int crs_entry_index; 943 unsigned int line_index; 944 bool active_low; 945 }; 946 947 struct acpi_gpio_mapping { 948 const char *name; 949 const struct acpi_gpio_params *data; 950 unsigned int size; 951 }; 952 953 #if defined(CONFIG_ACPI) && defined(CONFIG_GPIOLIB) 954 int acpi_dev_add_driver_gpios(struct acpi_device *adev, 955 const struct acpi_gpio_mapping *gpios); 956 957 static inline void acpi_dev_remove_driver_gpios(struct acpi_device *adev) 958 { 959 if (adev) 960 adev->driver_gpios = NULL; 961 } 962 963 int devm_acpi_dev_add_driver_gpios(struct device *dev, 964 const struct acpi_gpio_mapping *gpios); 965 void devm_acpi_dev_remove_driver_gpios(struct device *dev); 966 967 bool acpi_gpio_get_irq_resource(struct acpi_resource *ares, 968 struct acpi_resource_gpio **agpio); 969 int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index); 970 #else 971 static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev, 972 const struct acpi_gpio_mapping *gpios) 973 { 974 return -ENXIO; 975 } 976 static inline void acpi_dev_remove_driver_gpios(struct acpi_device *adev) {} 977 978 static inline int devm_acpi_dev_add_driver_gpios(struct device *dev, 979 const struct acpi_gpio_mapping *gpios) 980 { 981 return -ENXIO; 982 } 983 static inline void devm_acpi_dev_remove_driver_gpios(struct device *dev) {} 984 985 static inline bool acpi_gpio_get_irq_resource(struct acpi_resource *ares, 986 struct acpi_resource_gpio **agpio) 987 { 988 return false; 989 } 990 static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index) 991 { 992 return -ENXIO; 993 } 994 #endif 995 996 /* Device properties */ 997 998 #define MAX_ACPI_REFERENCE_ARGS 8 999 struct acpi_reference_args { 1000 struct acpi_device *adev; 1001 size_t nargs; 1002 u64 args[MAX_ACPI_REFERENCE_ARGS]; 1003 }; 1004 1005 #ifdef CONFIG_ACPI 1006 int acpi_dev_get_property(struct acpi_device *adev, const char *name, 1007 acpi_object_type type, const union acpi_object **obj); 1008 int __acpi_node_get_property_reference(struct fwnode_handle *fwnode, 1009 const char *name, size_t index, size_t num_args, 1010 struct acpi_reference_args *args); 1011 1012 static inline int acpi_node_get_property_reference(struct fwnode_handle *fwnode, 1013 const char *name, size_t index, 1014 struct acpi_reference_args *args) 1015 { 1016 return __acpi_node_get_property_reference(fwnode, name, index, 1017 MAX_ACPI_REFERENCE_ARGS, args); 1018 } 1019 1020 int acpi_node_prop_get(struct fwnode_handle *fwnode, const char *propname, 1021 void **valptr); 1022 int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname, 1023 enum dev_prop_type proptype, void *val); 1024 int acpi_node_prop_read(struct fwnode_handle *fwnode, const char *propname, 1025 enum dev_prop_type proptype, void *val, size_t nval); 1026 int acpi_dev_prop_read(struct acpi_device *adev, const char *propname, 1027 enum dev_prop_type proptype, void *val, size_t nval); 1028 1029 struct fwnode_handle *acpi_get_next_subnode(struct fwnode_handle *fwnode, 1030 struct fwnode_handle *child); 1031 struct fwnode_handle *acpi_node_get_parent(struct fwnode_handle *fwnode); 1032 1033 struct fwnode_handle *acpi_graph_get_next_endpoint(struct fwnode_handle *fwnode, 1034 struct fwnode_handle *prev); 1035 int acpi_graph_get_remote_endpoint(struct fwnode_handle *fwnode, 1036 struct fwnode_handle **remote, 1037 struct fwnode_handle **port, 1038 struct fwnode_handle **endpoint); 1039 1040 struct acpi_probe_entry; 1041 typedef bool (*acpi_probe_entry_validate_subtbl)(struct acpi_subtable_header *, 1042 struct acpi_probe_entry *); 1043 1044 #define ACPI_TABLE_ID_LEN 5 1045 1046 /** 1047 * struct acpi_probe_entry - boot-time probing entry 1048 * @id: ACPI table name 1049 * @type: Optional subtable type to match 1050 * (if @id contains subtables) 1051 * @subtable_valid: Optional callback to check the validity of 1052 * the subtable 1053 * @probe_table: Callback to the driver being probed when table 1054 * match is successful 1055 * @probe_subtbl: Callback to the driver being probed when table and 1056 * subtable match (and optional callback is successful) 1057 * @driver_data: Sideband data provided back to the driver 1058 */ 1059 struct acpi_probe_entry { 1060 __u8 id[ACPI_TABLE_ID_LEN]; 1061 __u8 type; 1062 acpi_probe_entry_validate_subtbl subtable_valid; 1063 union { 1064 acpi_tbl_table_handler probe_table; 1065 acpi_tbl_entry_handler probe_subtbl; 1066 }; 1067 kernel_ulong_t driver_data; 1068 }; 1069 1070 #define ACPI_DECLARE_PROBE_ENTRY(table, name, table_id, subtable, valid, data, fn) \ 1071 static const struct acpi_probe_entry __acpi_probe_##name \ 1072 __used __section(__##table##_acpi_probe_table) \ 1073 = { \ 1074 .id = table_id, \ 1075 .type = subtable, \ 1076 .subtable_valid = valid, \ 1077 .probe_table = (acpi_tbl_table_handler)fn, \ 1078 .driver_data = data, \ 1079 } 1080 1081 #define ACPI_PROBE_TABLE(name) __##name##_acpi_probe_table 1082 #define ACPI_PROBE_TABLE_END(name) __##name##_acpi_probe_table_end 1083 1084 int __acpi_probe_device_table(struct acpi_probe_entry *start, int nr); 1085 1086 #define acpi_probe_device_table(t) \ 1087 ({ \ 1088 extern struct acpi_probe_entry ACPI_PROBE_TABLE(t), \ 1089 ACPI_PROBE_TABLE_END(t); \ 1090 __acpi_probe_device_table(&ACPI_PROBE_TABLE(t), \ 1091 (&ACPI_PROBE_TABLE_END(t) - \ 1092 &ACPI_PROBE_TABLE(t))); \ 1093 }) 1094 #else 1095 static inline int acpi_dev_get_property(struct acpi_device *adev, 1096 const char *name, acpi_object_type type, 1097 const union acpi_object **obj) 1098 { 1099 return -ENXIO; 1100 } 1101 1102 static inline int 1103 __acpi_node_get_property_reference(struct fwnode_handle *fwnode, 1104 const char *name, size_t index, size_t num_args, 1105 struct acpi_reference_args *args) 1106 { 1107 return -ENXIO; 1108 } 1109 1110 static inline int acpi_node_get_property_reference(struct fwnode_handle *fwnode, 1111 const char *name, size_t index, 1112 struct acpi_reference_args *args) 1113 { 1114 return -ENXIO; 1115 } 1116 1117 static inline int acpi_node_prop_get(struct fwnode_handle *fwnode, 1118 const char *propname, 1119 void **valptr) 1120 { 1121 return -ENXIO; 1122 } 1123 1124 static inline int acpi_dev_prop_get(struct acpi_device *adev, 1125 const char *propname, 1126 void **valptr) 1127 { 1128 return -ENXIO; 1129 } 1130 1131 static inline int acpi_dev_prop_read_single(struct acpi_device *adev, 1132 const char *propname, 1133 enum dev_prop_type proptype, 1134 void *val) 1135 { 1136 return -ENXIO; 1137 } 1138 1139 static inline int acpi_node_prop_read(struct fwnode_handle *fwnode, 1140 const char *propname, 1141 enum dev_prop_type proptype, 1142 void *val, size_t nval) 1143 { 1144 return -ENXIO; 1145 } 1146 1147 static inline int acpi_dev_prop_read(struct acpi_device *adev, 1148 const char *propname, 1149 enum dev_prop_type proptype, 1150 void *val, size_t nval) 1151 { 1152 return -ENXIO; 1153 } 1154 1155 static inline struct fwnode_handle * 1156 acpi_get_next_subnode(struct fwnode_handle *fwnode, struct fwnode_handle *child) 1157 { 1158 return NULL; 1159 } 1160 1161 static inline struct fwnode_handle * 1162 acpi_node_get_parent(struct fwnode_handle *fwnode) 1163 { 1164 return NULL; 1165 } 1166 1167 static inline struct fwnode_handle * 1168 acpi_graph_get_next_endpoint(struct fwnode_handle *fwnode, 1169 struct fwnode_handle *prev) 1170 { 1171 return ERR_PTR(-ENXIO); 1172 } 1173 1174 static inline int 1175 acpi_graph_get_remote_endpoint(struct fwnode_handle *fwnode, 1176 struct fwnode_handle **remote, 1177 struct fwnode_handle **port, 1178 struct fwnode_handle **endpoint) 1179 { 1180 return -ENXIO; 1181 } 1182 1183 #define ACPI_DECLARE_PROBE_ENTRY(table, name, table_id, subtable, valid, data, fn) \ 1184 static const void * __acpi_table_##name[] \ 1185 __attribute__((unused)) \ 1186 = { (void *) table_id, \ 1187 (void *) subtable, \ 1188 (void *) valid, \ 1189 (void *) fn, \ 1190 (void *) data } 1191 1192 #define acpi_probe_device_table(t) ({ int __r = 0; __r;}) 1193 #endif 1194 1195 #ifdef CONFIG_ACPI_TABLE_UPGRADE 1196 void acpi_table_upgrade(void); 1197 #else 1198 static inline void acpi_table_upgrade(void) { } 1199 #endif 1200 1201 #if defined(CONFIG_ACPI) && defined(CONFIG_ACPI_WATCHDOG) 1202 extern bool acpi_has_watchdog(void); 1203 #else 1204 static inline bool acpi_has_watchdog(void) { return false; } 1205 #endif 1206 1207 #ifdef CONFIG_ACPI_SPCR_TABLE 1208 int parse_spcr(bool earlycon); 1209 #else 1210 static inline int parse_spcr(bool earlycon) { return 0; } 1211 #endif 1212 1213 #if IS_ENABLED(CONFIG_ACPI_GENERIC_GSI) 1214 int acpi_irq_get(acpi_handle handle, unsigned int index, struct resource *res); 1215 #else 1216 static inline 1217 int acpi_irq_get(acpi_handle handle, unsigned int index, struct resource *res) 1218 { 1219 return -EINVAL; 1220 } 1221 #endif 1222 1223 #endif /*_LINUX_ACPI_H*/ 1224