The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/acpica/acpivar.h

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    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-unix/include/acmacros.h>
   47 #include <contrib/dev/acpica-unix/include/acconfig.h>
   48 #include <contrib/dev/acpica-unix/include/aclocal.h>
   49 #include <contrib/dev/acpica-unix/include/acobject.h>
   50 #include <contrib/dev/acpica-unix/include/acstruct.h>
   51 #include <contrib/dev/acpica-unix/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  * ACPI-CA 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  * ACPI CA does not define layers for non-ACPI CA drivers.
  173  * We define some here within the range provided.
  174  */
  175 #define ACPI_AC_ADAPTER         0x00010000
  176 #define ACPI_BATTERY            0x00020000
  177 #define ACPI_BUS                0x00040000
  178 #define ACPI_BUTTON             0x00080000
  179 #define ACPI_EC                 0x00100000
  180 #define ACPI_FAN                0x00200000
  181 #define ACPI_POWERRES           0x00400000
  182 #define ACPI_PROCESSOR          0x00800000
  183 #define ACPI_THERMAL            0x01000000
  184 #define ACPI_TIMER              0x02000000
  185 #define ACPI_OEM                0x04000000
  186 
  187 /*
  188  * Constants for different interrupt models used with acpi_SetIntrModel().
  189  */
  190 #define ACPI_INTR_PIC           0
  191 #define ACPI_INTR_APIC          1
  192 #define ACPI_INTR_SAPIC         2
  193 
  194 /*
  195  * Various features and capabilities for the acpi_get_features() method.
  196  * In particular, these are used for the ACPI 3.0 _PDC and _OSC methods.
  197  * See the Intel document titled "Intel Processor Vendor-Specific ACPI",
  198  * number 302223-005.
  199  */
  200 #define ACPI_PDC_PX_MSR         (1 << 0) /* Intel SpeedStep PERF_CTL MSRs */
  201 #define ACPI_PDC_MP_C1_IO_HALT  (1 << 1) /* Intel C1 "IO then halt" sequence */
  202 #define ACPI_PDC_TX_MSR         (1 << 2) /* Intel OnDemand throttling MSRs */
  203 #define ACPI_PDC_MP_C1PXTX      (1 << 3) /* MP C1, Px, and Tx */
  204 #define ACPI_PDC_MP_C2C3        (1 << 4) /* MP C2 and C3 */
  205 #define ACPI_PDC_MP_PX_SWCOORD  (1 << 5) /* MP Px, using _PSD */
  206 #define ACPI_PDC_MP_CX_SWCOORD  (1 << 6) /* MP Cx, using _CSD */
  207 #define ACPI_PDC_MP_TX_SWCOORD  (1 << 7) /* MP Tx, using _TSD */
  208 #define ACPI_PDC_MP_C1_NATIVE   (1 << 8) /* MP C1 support other than halt */
  209 #define ACPI_PDC_MP_C2C3_NATIVE (1 << 9) /* MP C2 and C3 support */
  210 #define ACPI_PDC_PX_HWCOORD     (1 << 11)/* Hardware coordination of Px */
  211 
  212 /*
  213  * Quirk flags.
  214  *
  215  * ACPI_Q_BROKEN: Disables all ACPI support.
  216  * ACPI_Q_TIMER: Disables support for the ACPI timer.
  217  * ACPI_Q_MADT_IRQ0: Specifies that ISA IRQ 0 is wired up to pin 0 of the
  218  *      first APIC and that the MADT should force that by ignoring the PC-AT
  219  *      compatible flag and ignoring overrides that redirect IRQ 0 to pin 2.
  220  */
  221 extern int      acpi_quirks;
  222 #define ACPI_Q_OK               0
  223 #define ACPI_Q_BROKEN           (1 << 0)
  224 #define ACPI_Q_TIMER            (1 << 1)
  225 #define ACPI_Q_MADT_IRQ0        (1 << 2)
  226 
  227 /*
  228  * Note that the low ivar values are reserved to provide
  229  * interface compatibility with ISA drivers which can also
  230  * attach to ACPI.
  231  */
  232 #define ACPI_IVAR_HANDLE        0x100
  233 #define ACPI_IVAR_MAGIC         0x101
  234 #define ACPI_IVAR_PRIVATE       0x102
  235 #define ACPI_IVAR_FLAGS         0x103
  236 
  237 /*
  238  * Accessor functions for our ivars.  Default value for BUS_READ_IVAR is
  239  * (type) 0.  The <sys/bus.h> accessor functions don't check return values.
  240  */
  241 #define __ACPI_BUS_ACCESSOR(varp, var, ivarp, ivar, type)       \
  242                                                                 \
  243 static __inline type varp ## _get_ ## var(device_t dev)         \
  244 {                                                               \
  245     uintptr_t v = 0;                                            \
  246     BUS_READ_IVAR(device_get_parent(dev), dev,                  \
  247         ivarp ## _IVAR_ ## ivar, &v);                           \
  248     return ((type) v);                                          \
  249 }                                                               \
  250                                                                 \
  251 static __inline void varp ## _set_ ## var(device_t dev, type t) \
  252 {                                                               \
  253     uintptr_t v = (uintptr_t) t;                                \
  254     BUS_WRITE_IVAR(device_get_parent(dev), dev,                 \
  255         ivarp ## _IVAR_ ## ivar, v);                            \
  256 }
  257 
  258 __ACPI_BUS_ACCESSOR(acpi, handle, ACPI, HANDLE, ACPI_HANDLE)
  259 __ACPI_BUS_ACCESSOR(acpi, magic, ACPI, MAGIC, uintptr_t)
  260 __ACPI_BUS_ACCESSOR(acpi, private, ACPI, PRIVATE, void *)
  261 __ACPI_BUS_ACCESSOR(acpi, flags, ACPI, FLAGS, int)
  262 
  263 void acpi_fake_objhandler(ACPI_HANDLE h, void *data);
  264 static __inline device_t
  265 acpi_get_device(ACPI_HANDLE handle)
  266 {
  267     void *dev = NULL;
  268     AcpiGetData(handle, acpi_fake_objhandler, &dev);
  269     return ((device_t)dev);
  270 }
  271 
  272 static __inline ACPI_OBJECT_TYPE
  273 acpi_get_type(device_t dev)
  274 {
  275     ACPI_HANDLE         h;
  276     ACPI_OBJECT_TYPE    t;
  277 
  278     if ((h = acpi_get_handle(dev)) == NULL)
  279         return (ACPI_TYPE_NOT_FOUND);
  280     if (AcpiGetType(h, &t) != AE_OK)
  281         return (ACPI_TYPE_NOT_FOUND);
  282     return (t);
  283 }
  284 
  285 /* Find the difference between two PM tick counts. */
  286 static __inline uint32_t
  287 acpi_TimerDelta(uint32_t end, uint32_t start)
  288 {
  289 
  290         if (end < start && (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) == 0)
  291                 end |= 0x01000000;
  292         return (end - start);
  293 }
  294 
  295 #ifdef ACPI_DEBUGGER
  296 void            acpi_EnterDebugger(void);
  297 #endif
  298 
  299 #ifdef ACPI_DEBUG
  300 #include <sys/cons.h>
  301 #define STEP(x)         do {printf x, printf("\n"); cngetc();} while (0)
  302 #else
  303 #define STEP(x)
  304 #endif
  305 
  306 #define ACPI_VPRINT(dev, acpi_sc, x...) do {                    \
  307     if (acpi_get_verbose(acpi_sc))                              \
  308         device_printf(dev, x);                                  \
  309 } while (0)
  310 
  311 /* Values for the device _STA (status) method. */
  312 #define ACPI_STA_PRESENT        (1 << 0)
  313 #define ACPI_STA_ENABLED        (1 << 1)
  314 #define ACPI_STA_SHOW_IN_UI     (1 << 2)
  315 #define ACPI_STA_FUNCTIONAL     (1 << 3)
  316 #define ACPI_STA_BATT_PRESENT   (1 << 4)
  317 
  318 #define ACPI_DEVINFO_PRESENT(x, flags)                                  \
  319         (((x) & (flags)) == (flags))
  320 #define ACPI_DEVICE_PRESENT(x)                                          \
  321         ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL)
  322 #define ACPI_BATTERY_PRESENT(x)                                         \
  323         ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL | \
  324             ACPI_STA_BATT_PRESENT)
  325 
  326 BOOLEAN         acpi_DeviceIsPresent(device_t dev);
  327 BOOLEAN         acpi_BatteryIsPresent(device_t dev);
  328 ACPI_STATUS     acpi_GetHandleInScope(ACPI_HANDLE parent, char *path,
  329                     ACPI_HANDLE *result);
  330 ACPI_BUFFER     *acpi_AllocBuffer(int size);
  331 ACPI_STATUS     acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp,
  332                     UINT32 *number);
  333 ACPI_STATUS     acpi_GetInteger(ACPI_HANDLE handle, char *path,
  334                     UINT32 *number);
  335 ACPI_STATUS     acpi_SetInteger(ACPI_HANDLE handle, char *path,
  336                     UINT32 number);
  337 ACPI_STATUS     acpi_ForeachPackageObject(ACPI_OBJECT *obj, 
  338                     void (*func)(ACPI_OBJECT *comp, void *arg), void *arg);
  339 ACPI_STATUS     acpi_FindIndexedResource(ACPI_BUFFER *buf, int index,
  340                     ACPI_RESOURCE **resp);
  341 ACPI_STATUS     acpi_AppendBufferResource(ACPI_BUFFER *buf,
  342                     ACPI_RESOURCE *res);
  343 ACPI_STATUS     acpi_SetIntrModel(int model);
  344 int             acpi_ReqSleepState(struct acpi_softc *sc, int state);
  345 int             acpi_AckSleepState(struct apm_clone_data *clone, int error);
  346 ACPI_STATUS     acpi_SetSleepState(struct acpi_softc *sc, int state);
  347 int             acpi_wake_set_enable(device_t dev, int enable);
  348 int             acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
  349 ACPI_STATUS     acpi_Startup(void);
  350 void            acpi_UserNotify(const char *subsystem, ACPI_HANDLE h,
  351                     uint8_t notify);
  352 int             acpi_bus_alloc_gas(device_t dev, int *type, int *rid,
  353                     ACPI_GENERIC_ADDRESS *gas, struct resource **res,
  354                     u_int flags);
  355 
  356 struct acpi_parse_resource_set {
  357     void        (*set_init)(device_t dev, void *arg, void **context);
  358     void        (*set_done)(device_t dev, void *context);
  359     void        (*set_ioport)(device_t dev, void *context, uint32_t base,
  360                     uint32_t length);
  361     void        (*set_iorange)(device_t dev, void *context, uint32_t low,
  362                     uint32_t high, uint32_t length, uint32_t align);
  363     void        (*set_memory)(device_t dev, void *context, uint32_t base,
  364                     uint32_t length);
  365     void        (*set_memoryrange)(device_t dev, void *context, uint32_t low,
  366                     uint32_t high, uint32_t length, uint32_t align);
  367     void        (*set_irq)(device_t dev, void *context, u_int8_t *irq,
  368                     int count, int trig, int pol);
  369     void        (*set_ext_irq)(device_t dev, void *context, u_int32_t *irq,
  370                     int count, int trig, int pol);
  371     void        (*set_drq)(device_t dev, void *context, u_int8_t *drq,
  372                     int count);
  373     void        (*set_start_dependent)(device_t dev, void *context,
  374                     int preference);
  375     void        (*set_end_dependent)(device_t dev, void *context);
  376 };
  377 
  378 extern struct   acpi_parse_resource_set acpi_res_parse_set;
  379 
  380 void            acpi_config_intr(device_t dev, ACPI_RESOURCE *res);
  381 ACPI_STATUS     acpi_lookup_irq_resource(device_t dev, int rid,
  382                     struct resource *res, ACPI_RESOURCE *acpi_res);
  383 ACPI_STATUS     acpi_parse_resources(device_t dev, ACPI_HANDLE handle,
  384                     struct acpi_parse_resource_set *set, void *arg);
  385 
  386 /* ACPI event handling */
  387 UINT32          acpi_event_power_button_sleep(void *context);
  388 UINT32          acpi_event_power_button_wake(void *context);
  389 UINT32          acpi_event_sleep_button_sleep(void *context);
  390 UINT32          acpi_event_sleep_button_wake(void *context);
  391 
  392 #define ACPI_EVENT_PRI_FIRST      0
  393 #define ACPI_EVENT_PRI_DEFAULT    10000
  394 #define ACPI_EVENT_PRI_LAST       20000
  395 
  396 typedef void (*acpi_event_handler_t)(void *, int);
  397 
  398 EVENTHANDLER_DECLARE(acpi_sleep_event, acpi_event_handler_t);
  399 EVENTHANDLER_DECLARE(acpi_wakeup_event, acpi_event_handler_t);
  400 
  401 /* Device power control. */
  402 ACPI_STATUS     acpi_pwr_wake_enable(ACPI_HANDLE consumer, int enable);
  403 ACPI_STATUS     acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state);
  404 
  405 /* Misc. */
  406 static __inline struct acpi_softc *
  407 acpi_device_get_parent_softc(device_t child)
  408 {
  409     device_t    parent;
  410 
  411     parent = device_get_parent(child);
  412     if (parent == NULL)
  413         return (NULL);
  414     return (device_get_softc(parent));
  415 }
  416 
  417 static __inline int
  418 acpi_get_verbose(struct acpi_softc *sc)
  419 {
  420     if (sc)
  421         return (sc->acpi_verbose);
  422     return (0);
  423 }
  424 
  425 char            *acpi_name(ACPI_HANDLE handle);
  426 int             acpi_avoid(ACPI_HANDLE handle);
  427 int             acpi_disabled(char *subsys);
  428 int             acpi_enabled(char *subsys);
  429 int             acpi_machdep_init(device_t dev);
  430 void            acpi_install_wakeup_handler(struct acpi_softc *sc);
  431 int             acpi_sleep_machdep(struct acpi_softc *sc, int state);
  432 int             acpi_table_quirks(int *quirks);
  433 int             acpi_machdep_quirks(int *quirks);
  434 
  435 /* Battery Abstraction. */
  436 struct acpi_battinfo;
  437 
  438 int             acpi_battery_register(device_t dev);
  439 int             acpi_battery_remove(device_t dev);
  440 int             acpi_battery_get_units(void);
  441 int             acpi_battery_get_info_expire(void);
  442 int             acpi_battery_bst_valid(struct acpi_bst *bst);
  443 int             acpi_battery_bif_valid(struct acpi_bif *bif);
  444 int             acpi_battery_get_battinfo(device_t dev,
  445                     struct acpi_battinfo *info);
  446 
  447 /* Embedded controller. */
  448 void            acpi_ec_ecdt_probe(device_t);
  449 
  450 /* AC adapter interface. */
  451 int             acpi_acad_get_acline(int *);
  452 
  453 /* Package manipulation convenience functions. */
  454 #define ACPI_PKG_VALID(pkg, size)                               \
  455     ((pkg) != NULL && (pkg)->Type == ACPI_TYPE_PACKAGE &&       \
  456      (pkg)->Package.Count >= (size))
  457 #define ACPI_PKG_VALID_EQ(pkg, size)    \
  458     (ACPI_PKG_VALID((pkg), (size)) && (pkg)->Package.Count == (size))
  459 int             acpi_PkgInt(ACPI_OBJECT *res, int idx, ACPI_INTEGER *dst);
  460 int             acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst);
  461 int             acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size);
  462 int             acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type,
  463                     int *rid, struct resource **dst, u_int flags);
  464 int             acpi_PkgRawGas(ACPI_OBJECT *res, int idx,
  465                                ACPI_GENERIC_ADDRESS *gas);
  466 ACPI_HANDLE     acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj);
  467 /* ACPI task kernel thread initialization. */
  468 int     acpi_task_thread_init(void);
  469 extern BOOLEAN acpi_MatchHid(ACPI_HANDLE h, const char *hid);
  470 /*
  471  * Base level for BUS_ADD_CHILD.  Special devices are added at orders less
  472  * than this, and normal devices at or above this level.  This keeps the
  473  * probe order sorted so that things like sysresource are available before
  474  * their children need them.
  475  */
  476 #define ACPI_DEV_BASE_ORDER     10
  477 
  478 /* Default number of task queue threads to start. */
  479 #ifndef ACPI_MAX_THREADS
  480 #define ACPI_MAX_THREADS        3
  481 #endif
  482 
  483 /* Use the device logging level for ktr(4). */
  484 #define KTR_ACPI                KTR_DEV
  485 
  486 #endif /* _KERNEL */
  487 #endif /* !_ACPIVAR_H_ */

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