1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * acpi/internal.h 4 * For use by Linux/ACPI infrastructure, not drivers 5 * 6 * Copyright (c) 2009, Intel Corporation. 7 */ 8 9 #ifndef _ACPI_INTERNAL_H_ 10 #define _ACPI_INTERNAL_H_ 11 12 #include <linux/idr.h> 13 14 extern struct acpi_device *acpi_root; 15 16 int early_acpi_osi_init(void); 17 int acpi_osi_init(void); 18 acpi_status acpi_os_initialize1(void); 19 void acpi_scan_init(void); 20 #ifdef CONFIG_PCI 21 void acpi_pci_root_init(void); 22 void acpi_pci_link_init(void); 23 #else 24 static inline void acpi_pci_root_init(void) {} 25 static inline void acpi_pci_link_init(void) {} 26 #endif 27 void acpi_processor_init(void); 28 void acpi_platform_init(void); 29 void acpi_pnp_init(void); 30 int acpi_sysfs_init(void); 31 void acpi_gpe_apply_masked_gpes(void); 32 void acpi_container_init(void); 33 void acpi_memory_hotplug_init(void); 34 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 35 void pci_ioapic_remove(struct acpi_pci_root *root); 36 int acpi_ioapic_remove(struct acpi_pci_root *root); 37 #else 38 static inline void pci_ioapic_remove(struct acpi_pci_root *root) { return; } 39 static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; } 40 #endif 41 #ifdef CONFIG_ACPI_DOCK 42 void register_dock_dependent_device(struct acpi_device *adev, 43 acpi_handle dshandle); 44 int dock_notify(struct acpi_device *adev, u32 event); 45 void acpi_dock_add(struct acpi_device *adev); 46 #else 47 static inline void register_dock_dependent_device(struct acpi_device *adev, 48 acpi_handle dshandle) {} 49 static inline int dock_notify(struct acpi_device *adev, u32 event) { return -ENODEV; } 50 static inline void acpi_dock_add(struct acpi_device *adev) {} 51 #endif 52 #ifdef CONFIG_X86 53 void acpi_cmos_rtc_init(void); 54 #else 55 static inline void acpi_cmos_rtc_init(void) {} 56 #endif 57 int acpi_rev_override_setup(char *str); 58 59 void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug, 60 const char *name); 61 int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler, 62 const char *hotplug_profile_name); 63 void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val); 64 65 #ifdef CONFIG_DEBUG_FS 66 extern struct dentry *acpi_debugfs_dir; 67 void acpi_debugfs_init(void); 68 #else 69 static inline void acpi_debugfs_init(void) { return; } 70 #endif 71 72 #if defined(CONFIG_X86) && defined(CONFIG_PCI) 73 void acpi_lpss_init(void); 74 #else 75 static inline void acpi_lpss_init(void) {} 76 #endif 77 78 void acpi_apd_init(void); 79 80 acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src); 81 bool acpi_queue_hotplug_work(struct work_struct *work); 82 void acpi_device_hotplug(struct acpi_device *adev, u32 src); 83 bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent); 84 85 acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context); 86 void acpi_scan_table_notify(void); 87 88 int acpi_active_trip_temp(struct acpi_device *adev, int id, int *ret_temp); 89 int acpi_passive_trip_temp(struct acpi_device *adev, int *ret_temp); 90 int acpi_hot_trip_temp(struct acpi_device *adev, int *ret_temp); 91 int acpi_critical_trip_temp(struct acpi_device *adev, int *ret_temp); 92 93 #ifdef CONFIG_ARM64 94 int acpi_arch_thermal_cpufreq_pctg(void); 95 #else 96 static inline int acpi_arch_thermal_cpufreq_pctg(void) 97 { 98 return 0; 99 } 100 #endif 101 102 /* -------------------------------------------------------------------------- 103 Device Node Initialization / Removal 104 -------------------------------------------------------------------------- */ 105 #define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \ 106 ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING) 107 108 extern struct list_head acpi_bus_id_list; 109 110 struct acpi_device_bus_id { 111 const char *bus_id; 112 struct ida instance_ida; 113 struct list_head node; 114 }; 115 116 void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, 117 int type, void (*release)(struct device *)); 118 int acpi_tie_acpi_dev(struct acpi_device *adev); 119 int acpi_device_add(struct acpi_device *device); 120 void acpi_device_setup_files(struct acpi_device *dev); 121 void acpi_device_remove_files(struct acpi_device *dev); 122 extern const struct attribute_group *acpi_groups[]; 123 void acpi_device_add_finalize(struct acpi_device *device); 124 void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); 125 bool acpi_device_is_enabled(const struct acpi_device *adev); 126 bool acpi_device_is_present(const struct acpi_device *adev); 127 bool acpi_device_is_battery(struct acpi_device *adev); 128 bool acpi_device_is_first_physical_node(struct acpi_device *adev, 129 const struct device *dev); 130 int acpi_bus_register_early_device(int type); 131 132 /* -------------------------------------------------------------------------- 133 Device Matching and Notification 134 -------------------------------------------------------------------------- */ 135 const struct acpi_device *acpi_companion_match(const struct device *dev); 136 int __acpi_device_uevent_modalias(const struct acpi_device *adev, 137 struct kobj_uevent_env *env); 138 139 /* -------------------------------------------------------------------------- 140 Power Resource 141 -------------------------------------------------------------------------- */ 142 void acpi_power_resources_init(void); 143 void acpi_power_resources_list_free(struct list_head *list); 144 int acpi_extract_power_resources(union acpi_object *package, unsigned int start, 145 struct list_head *list); 146 struct acpi_device *acpi_add_power_resource(acpi_handle handle); 147 void acpi_power_add_remove_device(struct acpi_device *adev, bool add); 148 int acpi_power_wakeup_list_init(struct list_head *list, int *system_level); 149 int acpi_device_sleep_wake(struct acpi_device *dev, 150 int enable, int sleep_state, int dev_state); 151 int acpi_power_get_inferred_state(struct acpi_device *device, int *state); 152 int acpi_power_on_resources(struct acpi_device *device, int state); 153 int acpi_power_transition(struct acpi_device *device, int state); 154 void acpi_turn_off_unused_power_resources(void); 155 156 /* -------------------------------------------------------------------------- 157 Device Power Management 158 -------------------------------------------------------------------------- */ 159 int acpi_device_get_power(struct acpi_device *device, int *state); 160 int acpi_wakeup_device_init(void); 161 162 /* -------------------------------------------------------------------------- 163 Processor 164 -------------------------------------------------------------------------- */ 165 #ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC 166 void acpi_early_processor_control_setup(void); 167 void acpi_early_processor_set_pdc(void); 168 #ifdef CONFIG_X86 169 void acpi_proc_quirk_mwait_check(void); 170 #else 171 static inline void acpi_proc_quirk_mwait_check(void) {} 172 #endif 173 bool processor_physically_present(acpi_handle handle); 174 #else 175 static inline void acpi_early_processor_control_setup(void) {} 176 #endif 177 178 #ifdef CONFIG_ACPI_PROCESSOR_CSTATE 179 void acpi_idle_rescan_dead_smt_siblings(void); 180 #else 181 static inline void acpi_idle_rescan_dead_smt_siblings(void) {} 182 #endif 183 184 /* -------------------------------------------------------------------------- 185 Embedded Controller 186 -------------------------------------------------------------------------- */ 187 188 enum acpi_ec_event_state { 189 EC_EVENT_READY = 0, /* Event work can be submitted */ 190 EC_EVENT_IN_PROGRESS, /* Event work is pending or being processed */ 191 EC_EVENT_COMPLETE, /* Event work processing has completed */ 192 }; 193 194 struct acpi_ec { 195 acpi_handle handle; 196 int gpe; 197 int irq; 198 unsigned long command_addr; 199 unsigned long data_addr; 200 bool global_lock; 201 unsigned long flags; 202 unsigned long reference_count; 203 struct mutex mutex; 204 wait_queue_head_t wait; 205 struct list_head list; 206 struct transaction *curr; 207 spinlock_t lock; 208 struct work_struct work; 209 unsigned long timestamp; 210 enum acpi_ec_event_state event_state; 211 unsigned int events_to_process; 212 unsigned int events_in_progress; 213 unsigned int queries_in_progress; 214 bool busy_polling; 215 unsigned int polling_guard; 216 }; 217 218 extern struct acpi_ec *first_ec; 219 220 /* If we find an EC via the ECDT, we need to keep a ptr to its context */ 221 /* External interfaces use first EC only, so remember */ 222 typedef int (*acpi_ec_query_func) (void *data); 223 224 #ifdef CONFIG_ACPI_EC 225 226 void acpi_ec_init(void); 227 void acpi_ec_ecdt_probe(void); 228 void acpi_ec_dsdt_probe(void); 229 void acpi_ec_block_transactions(void); 230 void acpi_ec_unblock_transactions(void); 231 int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, 232 acpi_handle handle, acpi_ec_query_func func, 233 void *data); 234 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit); 235 void acpi_ec_register_opregions(struct acpi_device *adev); 236 237 #ifdef CONFIG_PM_SLEEP 238 void acpi_ec_flush_work(void); 239 bool acpi_ec_dispatch_gpe(void); 240 #endif 241 242 #else 243 244 static inline void acpi_ec_init(void) {} 245 static inline void acpi_ec_ecdt_probe(void) {} 246 static inline void acpi_ec_dsdt_probe(void) {} 247 static inline void acpi_ec_block_transactions(void) {} 248 static inline void acpi_ec_unblock_transactions(void) {} 249 static inline int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, 250 acpi_handle handle, acpi_ec_query_func func, 251 void *data) 252 { 253 return -ENXIO; 254 } 255 static inline void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit) {} 256 static inline void acpi_ec_register_opregions(struct acpi_device *adev) {} 257 258 static inline void acpi_ec_flush_work(void) {} 259 static inline bool acpi_ec_dispatch_gpe(void) 260 { 261 return false; 262 } 263 264 #endif 265 266 /*-------------------------------------------------------------------------- 267 Suspend/Resume 268 -------------------------------------------------------------------------- */ 269 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 270 extern bool acpi_s2idle_wakeup(void); 271 extern int acpi_sleep_init(void); 272 #else 273 static inline bool acpi_s2idle_wakeup(void) { return false; } 274 static inline int acpi_sleep_init(void) { return -ENXIO; } 275 #endif 276 277 #ifdef CONFIG_ACPI_SLEEP 278 void acpi_sleep_proc_init(void); 279 int suspend_nvs_alloc(void); 280 void suspend_nvs_free(void); 281 int suspend_nvs_save(void); 282 void suspend_nvs_restore(void); 283 #else 284 static inline void acpi_sleep_proc_init(void) {} 285 static inline int suspend_nvs_alloc(void) { return 0; } 286 static inline void suspend_nvs_free(void) {} 287 static inline int suspend_nvs_save(void) { return 0; } 288 static inline void suspend_nvs_restore(void) {} 289 #endif 290 291 #ifdef CONFIG_X86 292 bool force_storage_d3(void); 293 #else 294 static inline bool force_storage_d3(void) 295 { 296 return false; 297 } 298 #endif 299 300 /*-------------------------------------------------------------------------- 301 Device properties 302 -------------------------------------------------------------------------- */ 303 #define ACPI_DT_NAMESPACE_HID "PRP0001" 304 305 void acpi_init_properties(struct acpi_device *adev); 306 void acpi_free_properties(struct acpi_device *adev); 307 308 #ifdef CONFIG_X86 309 void acpi_extract_apple_properties(struct acpi_device *adev); 310 #else 311 static inline void acpi_extract_apple_properties(struct acpi_device *adev) {} 312 #endif 313 314 /*-------------------------------------------------------------------------- 315 Watchdog 316 -------------------------------------------------------------------------- */ 317 318 #ifdef CONFIG_ACPI_WATCHDOG 319 void acpi_watchdog_init(void); 320 #else 321 static inline void acpi_watchdog_init(void) {} 322 #endif 323 324 #ifdef CONFIG_ACPI_LPIT 325 void acpi_init_lpit(void); 326 #else 327 static inline void acpi_init_lpit(void) { } 328 #endif 329 330 /*-------------------------------------------------------------------------- 331 ACPI _CRS CSI-2 and MIPI DisCo for Imaging 332 -------------------------------------------------------------------------- */ 333 334 void acpi_mipi_check_crs_csi2(acpi_handle handle); 335 void acpi_mipi_scan_crs_csi2(void); 336 void acpi_mipi_init_crs_csi2_swnodes(void); 337 void acpi_mipi_crs_csi2_cleanup(void); 338 #ifdef CONFIG_X86 339 bool acpi_graph_ignore_port(acpi_handle handle); 340 #else 341 static inline bool acpi_graph_ignore_port(acpi_handle handle) { return false; } 342 #endif 343 344 #endif /* _ACPI_INTERNAL_H_ */ 345