1 /*- 2 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 3 * Copyright (c) 2000 Michael Smith <msmith@freebsd.org> 4 * Copyright (c) 2000 BSDi 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/dev/acpica/acpivar.h,v 1.108.8.1 2009/04/15 03:14:26 kensmith Exp $ 29 */ 30 31 #ifndef _ACPIVAR_H_ 32 #define _ACPIVAR_H_ 33 34 #ifdef _KERNEL 35 36 37 #include "acpi_if.h" 38 #include "bus_if.h" 39 #include <sys/eventhandler.h> 40 #include <sys/sysctl.h> 41 #include <sys/lock.h> 42 #include <sys/bus.h> 43 #include <sys/spinlock.h> 44 #include <sys/spinlock2.h> 45 #include <sys/serialize.h> 46 #include <contrib/dev/acpica/source/include/acmacros.h> 47 #include <contrib/dev/acpica/source/include/acconfig.h> 48 #include <contrib/dev/acpica/source/include/aclocal.h> 49 #include <contrib/dev/acpica/source/include/acobject.h> 50 #include <contrib/dev/acpica/source/include/acstruct.h> 51 #include <contrib/dev/acpica/source/include/acutils.h> 52 53 struct apm_clone_data; 54 struct acpi_softc { 55 device_t acpi_dev; 56 cdev_t acpi_dev_t; 57 58 struct resource *acpi_irq; 59 int acpi_irq_rid; 60 void *acpi_irq_handle; 61 62 int acpi_enabled; 63 int acpi_sstate; 64 int acpi_sleep_disabled; 65 66 struct sysctl_ctx_list acpi_sysctl_ctx; 67 struct sysctl_oid *acpi_sysctl_tree; 68 int acpi_power_button_sx; 69 int acpi_sleep_button_sx; 70 int acpi_lid_switch_sx; 71 72 int acpi_standby_sx; 73 int acpi_suspend_sx; 74 75 int acpi_sleep_delay; 76 int acpi_s4bios; 77 int acpi_do_disable; 78 int acpi_verbose; 79 int acpi_handle_reboot; 80 81 bus_dma_tag_t acpi_waketag; 82 bus_dmamap_t acpi_wakemap; 83 vm_offset_t acpi_wakeaddr; 84 vm_paddr_t acpi_wakephys; 85 86 int acpi_next_sstate; /* Next suspend Sx state. */ 87 struct apm_clone_data *acpi_clone; /* Pseudo-dev for devd(8). */ 88 STAILQ_HEAD(,apm_clone_data) apm_cdevs; /* All apm/apmctl/acpi cdevs. */ 89 struct callout susp_force_to; /* Force suspend if no acks. */ 90 }; 91 92 struct acpi_device { 93 /* ACPI ivars */ 94 ACPI_HANDLE ad_handle; 95 uintptr_t ad_magic; 96 void *ad_private; 97 int ad_flags; 98 99 /* Resources */ 100 struct resource_list ad_rl; 101 }; 102 103 /* Track device (/dev/{apm,apmctl} and /dev/acpi) notification status. */ 104 struct apm_clone_data { 105 STAILQ_ENTRY(apm_clone_data) entries; 106 struct cdev *cdev; 107 int flags; 108 #define ACPI_EVF_NONE 0 /* /dev/apm semantics */ 109 #define ACPI_EVF_DEVD 1 /* /dev/acpi is handled via devd(8) */ 110 #define ACPI_EVF_WRITE 2 /* Device instance is opened writable. */ 111 int notify_status; 112 #define APM_EV_NONE 0 /* Device not yet aware of pending sleep. */ 113 #define APM_EV_NOTIFIED 1 /* Device saw next sleep state. */ 114 #define APM_EV_ACKED 2 /* Device agreed sleep can occur. */ 115 struct acpi_softc *acpi_sc; 116 }; 117 118 #define ACPI_PRW_MAX_POWERRES 8 119 120 struct acpi_prw_data { 121 ACPI_HANDLE gpe_handle; 122 int gpe_bit; 123 int lowest_wake; 124 ACPI_OBJECT power_res[ACPI_PRW_MAX_POWERRES]; 125 int power_res_count; 126 }; 127 128 /* Flags for each device defined in the AML namespace. */ 129 #define ACPI_FLAG_WAKE_ENABLED 0x1 130 131 /* Macros for extracting parts of a PCI address from an _ADR value. */ 132 #define ACPI_ADR_PCI_SLOT(adr) (((adr) & 0xffff0000) >> 16) 133 #define ACPI_ADR_PCI_FUNC(adr) ((adr) & 0xffff) 134 135 /* 136 * Entry points to ACPI from above are global functions defined in this 137 * file, sysctls, and I/O on the control device. Entry points from below 138 * are interrupts (the SCI), notifies, task queue threads, and the thermal 139 * zone polling thread. 140 * 141 * ACPI tables and global shared data are protected by a global lock 142 * (acpi_lock). 143 * 144 * Each ACPI device can have its own driver-specific mutex for protecting 145 * shared access to local data. The ACPI_LOCK macros handle mutexes. 146 * 147 * Drivers that need to serialize access to functions (e.g., to route 148 * interrupts, get/set control paths, etc.) should use the sx lock macros 149 * (ACPI_SERIAL). 150 * 151 * ACPICA handles its own locking and should not be called with locks held. 152 * 153 * The most complicated path is: 154 * GPE -> EC runs _Qxx -> _Qxx reads EC space -> GPE 155 */ 156 extern struct lock acpi_lock; 157 /* acpi_thermal does lock recurs on purpose */ 158 /* I bet I should use some other locks here */ 159 #define ACPI_LOCK(sys) lockmgr(&sys##_lock, LK_EXCLUSIVE|LK_RETRY|LK_CANRECURSE) 160 #define ACPI_UNLOCK(sys) lockmgr(&sys##_lock, LK_RELEASE) 161 #define ACPI_LOCK_ASSERT(sys) KKASSERT(lockstatus(&sys##_lock, curthread) == LK_EXCLUSIVE) 162 #define ACPI_ASSERTLOCK ACPI_LOCK_ASSERT 163 #define ACPI_LOCK_DECL(sys, name) static struct lock sys##_lock 164 #define ACPI_LOCK_INIT(sys, name) lockinit(&sys##_lock, name, 0, 0) 165 166 #define ACPI_SERIAL_INIT(sys) lockinit(&sys##_serial, #sys, 0, 0) 167 #define ACPI_SERIAL_BEGIN(sys) lockmgr(&sys##_serial, LK_EXCLUSIVE|LK_RETRY) 168 #define ACPI_SERIAL_END(sys) lockmgr(&sys##_serial, LK_RELEASE) 169 #define ACPI_SERIAL_ASSERT(sys) KKASSERT(lockstatus(&sys##_serial, curthread) == LK_EXCLUSIVE) 170 #define ACPI_SERIAL_DECL(sys, name) static struct lock sys##_serial 171 172 /* 173 * ACPICA does not define layers for non-ACPICA drivers. 174 * We define some here within the range provided. 175 */ 176 #define ACPI_AC_ADAPTER 0x00010000 177 #define ACPI_BATTERY 0x00020000 178 #define ACPI_BUS 0x00040000 179 #define ACPI_BUTTON 0x00080000 180 #define ACPI_EC 0x00100000 181 #define ACPI_FAN 0x00200000 182 #define ACPI_POWERRES 0x00400000 183 #define ACPI_PROCESSOR 0x00800000 184 #define ACPI_THERMAL 0x01000000 185 #define ACPI_TIMER 0x02000000 186 #define ACPI_OEM 0x04000000 187 188 /* 189 * Constants for different interrupt models used with acpi_SetIntrModel(). 190 */ 191 #define ACPI_INTR_PIC 0 192 #define ACPI_INTR_APIC 1 193 #define ACPI_INTR_SAPIC 2 194 195 /* 196 * Various features and capabilities for the acpi_get_features() method. 197 * In particular, these are used for the ACPI 3.0 _PDC and _OSC methods. 198 * See the Intel document titled "Intel Processor Vendor-Specific ACPI", 199 * number 302223-005. 200 */ 201 #define ACPI_PDC_PX_MSR (1 << 0) /* Intel SpeedStep PERF_CTL MSRs */ 202 #define ACPI_PDC_MP_C1_IO_HALT (1 << 1) /* Intel C1 "IO then halt" sequence */ 203 #define ACPI_PDC_TX_MSR (1 << 2) /* Intel OnDemand throttling MSRs */ 204 #define ACPI_PDC_MP_C1PXTX (1 << 3) /* MP C1, Px, and Tx */ 205 #define ACPI_PDC_MP_C2C3 (1 << 4) /* MP C2 and C3 */ 206 #define ACPI_PDC_MP_PX_SWCOORD (1 << 5) /* MP Px, using _PSD */ 207 #define ACPI_PDC_MP_CX_SWCOORD (1 << 6) /* MP Cx, using _CSD */ 208 #define ACPI_PDC_MP_TX_SWCOORD (1 << 7) /* MP Tx, using _TSD */ 209 #define ACPI_PDC_MP_C1_NATIVE (1 << 8) /* MP C1 support other than halt */ 210 #define ACPI_PDC_MP_C2C3_NATIVE (1 << 9) /* MP C2 and C3 support */ 211 #define ACPI_PDC_PX_HWCOORD (1 << 11)/* Hardware coordination of Px */ 212 213 #define ACPI_OSC_QUERY_SUPPORT (1 << 0) /* Query Support Flag */ 214 215 #define ACPI_OSCERR_OSCFAIL (1 << 1) /* _OSC failure */ 216 #define ACPI_OSCERR_UUID (1 << 2) /* Unrecognized UUID */ 217 #define ACPI_OSCERR_REVISION (1 << 3) /* Unrecognized revision ID */ 218 #define ACPI_OSCERR_CAPSMASKED (1 << 4) /* Capabilities have been cleared */ 219 220 /* 221 * Quirk flags. 222 * 223 * ACPI_Q_BROKEN: Disables all ACPI support. 224 * ACPI_Q_TIMER: Disables support for the ACPI timer. 225 * ACPI_Q_MADT_IRQ0: Specifies that ISA IRQ 0 is wired up to pin 0 of the 226 * first APIC and that the MADT should force that by ignoring the PC-AT 227 * compatible flag and ignoring overrides that redirect IRQ 0 to pin 2. 228 * ACPI_Q_BATT_RATE_ABS: Specifies that the DSDT reports a negative 16-bit 229 * value for charging/discharging current and/or 0 as 65536. 230 */ 231 extern int acpi_quirks; 232 #define ACPI_Q_OK 0 233 #define ACPI_Q_BROKEN (1 << 0) 234 #define ACPI_Q_TIMER (1 << 1) 235 #define ACPI_Q_MADT_IRQ0 (1 << 2) 236 #define ACPI_Q_BATT_RATE_ABS (1 << 3) 237 238 /* 239 * Note that the low ivar values are reserved to provide 240 * interface compatibility with ISA drivers which can also 241 * attach to ACPI. 242 */ 243 #define ACPI_IVAR_HANDLE 0x100 244 #define ACPI_IVAR_MAGIC 0x101 245 #define ACPI_IVAR_PRIVATE 0x102 246 #define ACPI_IVAR_FLAGS 0x103 247 248 /* 249 * Accessor functions for our ivars. Default value for BUS_READ_IVAR is 250 * (type) 0. The <sys/bus.h> accessor functions don't check return values. 251 */ 252 #define __ACPI_BUS_ACCESSOR(varp, var, ivarp, ivar, type) \ 253 \ 254 static __inline type varp ## _get_ ## var(device_t dev) \ 255 { \ 256 uintptr_t v = 0; \ 257 BUS_READ_IVAR(device_get_parent(dev), dev, \ 258 ivarp ## _IVAR_ ## ivar, &v); \ 259 return ((type) v); \ 260 } \ 261 \ 262 static __inline void varp ## _set_ ## var(device_t dev, type t) \ 263 { \ 264 uintptr_t v = (uintptr_t) t; \ 265 BUS_WRITE_IVAR(device_get_parent(dev), dev, \ 266 ivarp ## _IVAR_ ## ivar, v); \ 267 } 268 269 __ACPI_BUS_ACCESSOR(acpi, handle, ACPI, HANDLE, ACPI_HANDLE) 270 __ACPI_BUS_ACCESSOR(acpi, magic, ACPI, MAGIC, uintptr_t) 271 __ACPI_BUS_ACCESSOR(acpi, private, ACPI, PRIVATE, void *) 272 __ACPI_BUS_ACCESSOR(acpi, flags, ACPI, FLAGS, int) 273 274 void acpi_fake_objhandler(ACPI_HANDLE h, void *data); 275 static __inline device_t 276 acpi_get_device(ACPI_HANDLE handle) 277 { 278 void *dev = NULL; 279 AcpiGetData(handle, acpi_fake_objhandler, &dev); 280 return ((device_t)dev); 281 } 282 283 static __inline ACPI_OBJECT_TYPE 284 acpi_get_type(device_t dev) 285 { 286 ACPI_HANDLE h; 287 ACPI_OBJECT_TYPE t; 288 289 if ((h = acpi_get_handle(dev)) == NULL) 290 return (ACPI_TYPE_NOT_FOUND); 291 if (ACPI_FAILURE(AcpiGetType(h, &t))) 292 return (ACPI_TYPE_NOT_FOUND); 293 return (t); 294 } 295 296 /* Find the difference between two PM tick counts. */ 297 static __inline uint32_t 298 acpi_TimerDelta(uint32_t end, uint32_t start) 299 { 300 301 if (end < start && (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) == 0) 302 end |= 0x01000000; 303 return (end - start); 304 } 305 306 #ifdef ACPI_DEBUG 307 #include <sys/cons.h> 308 #define STEP(x) do {printf x, printf("\n"); cngetc();} while (0) 309 #else 310 #define STEP(x) 311 #endif 312 313 #define ACPI_VPRINT(dev, acpi_sc, x...) do { \ 314 if (acpi_get_verbose(acpi_sc)) \ 315 device_printf(dev, x); \ 316 } while (0) 317 318 /* Values for the device _STA (status) method. */ 319 #define ACPI_STA_PRESENT (1 << 0) 320 #define ACPI_STA_ENABLED (1 << 1) 321 #define ACPI_STA_SHOW_IN_UI (1 << 2) 322 #define ACPI_STA_FUNCTIONAL (1 << 3) 323 #define ACPI_STA_BATT_PRESENT (1 << 4) 324 325 #define ACPI_DEVINFO_PRESENT(x, flags) \ 326 (((x) & (flags)) == (flags)) 327 #define ACPI_DEVICE_PRESENT(x) \ 328 ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL) 329 #define ACPI_BATTERY_PRESENT(x) \ 330 ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL | \ 331 ACPI_STA_BATT_PRESENT) 332 333 BOOLEAN acpi_DeviceIsPresent(device_t dev); 334 BOOLEAN acpi_BatteryIsPresent(device_t dev); 335 ACPI_STATUS acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, 336 ACPI_HANDLE *result); 337 ACPI_BUFFER *acpi_AllocBuffer(int size); 338 ACPI_STATUS acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, 339 UINT32 *number); 340 ACPI_STATUS acpi_GetInteger(ACPI_HANDLE handle, char *path, 341 UINT32 *number); 342 ACPI_STATUS acpi_SetInteger(ACPI_HANDLE handle, char *path, 343 UINT32 number); 344 ACPI_STATUS acpi_ForeachPackageObject(ACPI_OBJECT *obj, 345 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg); 346 ACPI_STATUS acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, 347 ACPI_RESOURCE **resp); 348 ACPI_STATUS acpi_AppendBufferResource(ACPI_BUFFER *buf, 349 ACPI_RESOURCE *res); 350 ACPI_STATUS acpi_SetIntrModel(int model); 351 int acpi_ReqSleepState(struct acpi_softc *sc, int state); 352 int acpi_AckSleepState(struct apm_clone_data *clone, int error); 353 ACPI_STATUS acpi_SetSleepState(struct acpi_softc *sc, int state); 354 int acpi_wake_set_enable(device_t dev, int enable); 355 int acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw); 356 ACPI_STATUS acpi_Startup(void); 357 void acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, 358 uint8_t notify); 359 int acpi_bus_alloc_gas(device_t dev, int *type, int *rid, 360 ACPI_GENERIC_ADDRESS *gas, struct resource **res, 361 u_int flags); 362 ACPI_STATUS acpi_eval_osc(device_t dev, ACPI_HANDLE handle, 363 const char *uuidstr, int revision, uint32_t *buf, 364 int count); 365 366 struct acpi_parse_resource_set { 367 void (*set_init)(device_t dev, void *arg, void **context); 368 void (*set_done)(device_t dev, void *context); 369 void (*set_ioport)(device_t dev, void *context, uint64_t base, 370 uint64_t length); 371 void (*set_iorange)(device_t dev, void *context, uint64_t low, 372 uint64_t high, uint64_t length, uint64_t align); 373 void (*set_memory)(device_t dev, void *context, uint64_t base, 374 uint64_t length); 375 void (*set_memoryrange)(device_t dev, void *context, uint64_t low, 376 uint64_t high, uint64_t length, uint64_t align); 377 void (*set_irq)(device_t dev, void *context, uint8_t *irq, 378 int count, int trig, int pol); 379 void (*set_ext_irq)(device_t dev, void *context, uint32_t *irq, 380 int count, int trig, int pol); 381 void (*set_drq)(device_t dev, void *context, uint8_t *drq, 382 int count); 383 void (*set_start_dependent)(device_t dev, void *context, 384 int preference); 385 void (*set_end_dependent)(device_t dev, void *context); 386 }; 387 388 extern struct acpi_parse_resource_set acpi_res_parse_set; 389 390 void acpi_config_intr(device_t dev, ACPI_RESOURCE *res); 391 ACPI_STATUS acpi_lookup_irq_resource(device_t dev, int rid, 392 struct resource *res, ACPI_RESOURCE *acpi_res); 393 ACPI_STATUS acpi_parse_resources(device_t dev, ACPI_HANDLE handle, 394 struct acpi_parse_resource_set *set, void *arg); 395 396 /* ACPI event handling */ 397 UINT32 acpi_event_power_button_sleep(void *context); 398 UINT32 acpi_event_power_button_wake(void *context); 399 UINT32 acpi_event_sleep_button_sleep(void *context); 400 UINT32 acpi_event_sleep_button_wake(void *context); 401 402 #define ACPI_EVENT_PRI_FIRST 0 403 #define ACPI_EVENT_PRI_DEFAULT 10000 404 #define ACPI_EVENT_PRI_LAST 20000 405 406 typedef void (*acpi_event_handler_t)(void *, int); 407 408 EVENTHANDLER_DECLARE(acpi_sleep_event, acpi_event_handler_t); 409 EVENTHANDLER_DECLARE(acpi_wakeup_event, acpi_event_handler_t); 410 411 /* Device power control. */ 412 ACPI_STATUS acpi_pwr_wake_enable(ACPI_HANDLE consumer, int enable); 413 ACPI_STATUS acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state); 414 415 /* Misc. */ 416 static __inline struct acpi_softc * 417 acpi_device_get_parent_softc(device_t child) 418 { 419 device_t parent; 420 421 parent = device_get_parent(child); 422 if (parent == NULL) 423 return (NULL); 424 return (device_get_softc(parent)); 425 } 426 427 static __inline int 428 acpi_get_verbose(struct acpi_softc *sc) 429 { 430 if (sc) 431 return (sc->acpi_verbose); 432 return (0); 433 } 434 435 char *acpi_name(ACPI_HANDLE handle); 436 int acpi_avoid(ACPI_HANDLE handle); 437 int acpi_disabled(char *subsys); 438 int acpi_enabled(char *subsys); 439 int acpi_machdep_init(device_t dev); 440 void acpi_install_wakeup_handler(struct acpi_softc *sc); 441 int acpi_sleep_machdep(struct acpi_softc *sc, int state); 442 int acpi_table_quirks(int *quirks); 443 int acpi_machdep_quirks(int *quirks); 444 445 /* Battery Abstraction. */ 446 struct acpi_battinfo; 447 448 int acpi_battery_register(device_t dev); 449 int acpi_battery_remove(device_t dev); 450 int acpi_battery_get_units(void); 451 int acpi_battery_get_info_expire(void); 452 int acpi_battery_bst_valid(struct acpi_bst *bst); 453 int acpi_battery_bif_valid(struct acpi_bif *bif); 454 int acpi_battery_get_battinfo(device_t dev, 455 struct acpi_battinfo *info); 456 457 /* Embedded controller. */ 458 void acpi_ec_ecdt_probe(device_t); 459 460 /* AC adapter interface. */ 461 int acpi_acad_get_acline(int *); 462 463 /* Package manipulation convenience functions. */ 464 #define ACPI_PKG_VALID(pkg, size) \ 465 ((pkg) != NULL && (pkg)->Type == ACPI_TYPE_PACKAGE && \ 466 (pkg)->Package.Count >= (size)) 467 #define ACPI_PKG_VALID_EQ(pkg, size) \ 468 (ACPI_PKG_VALID((pkg), (size)) && (pkg)->Package.Count == (size)) 469 int acpi_PkgInt(ACPI_OBJECT *res, int idx, UINT64 *dst); 470 int acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst); 471 int acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size); 472 int acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type, 473 int *rid, struct resource **dst, u_int flags); 474 int acpi_PkgRawGas(ACPI_OBJECT *res, int idx, 475 ACPI_GENERIC_ADDRESS *gas); 476 ACPI_HANDLE acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj); 477 /* ACPI task kernel thread initialization. */ 478 int acpi_task_thread_init(void); 479 void acpi_task_thread_schedule(void); 480 extern BOOLEAN acpi_MatchHid(ACPI_HANDLE h, const char *hid); 481 /* 482 * Base level for BUS_ADD_CHILD. Special devices are added at orders less 483 * than this, and normal devices at or above this level. This keeps the 484 * probe order sorted so that things like sysresource are available before 485 * their children need them. 486 */ 487 #define ACPI_DEV_BASE_ORDER 10 488 489 /* Default number of task queue threads to start. */ 490 #ifndef ACPI_MAX_THREADS 491 #define ACPI_MAX_THREADS 3 492 #endif 493 494 SYSCTL_DECL(_debug_acpi); 495 496 #endif /* _KERNEL */ 497 #endif /* !_ACPIVAR_H_ */ 498