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  * $FreeBSD$
   29  */
   30 
   31 #ifndef _ACPIVAR_H_
   32 #define _ACPIVAR_H_
   33 
   34 #ifdef _KERNEL
   35 
   36 #include "acpi_if.h"
   37 #include "bus_if.h"
   38 #include <sys/eventhandler.h>
   39 #include <sys/ktr.h>
   40 #include <sys/lock.h>
   41 #include <sys/mutex.h>
   42 #include <sys/selinfo.h>
   43 #include <sys/sx.h>
   44 #include <sys/sysctl.h>
   45 
   46 #include <machine/bus.h>
   47 #include <machine/resource.h>
   48 
   49 struct apm_clone_data;
   50 struct acpi_softc {
   51     device_t            acpi_dev;
   52     struct cdev         *acpi_dev_t;
   53 
   54     struct resource     *acpi_irq;
   55     int                 acpi_irq_rid;
   56     void                *acpi_irq_handle;
   57 
   58     int                 acpi_enabled;
   59     int                 acpi_sstate;
   60     int                 acpi_sleep_disabled;
   61 
   62     struct sysctl_ctx_list acpi_sysctl_ctx;
   63     struct sysctl_oid   *acpi_sysctl_tree;
   64     int                 acpi_power_button_sx;
   65     int                 acpi_sleep_button_sx;
   66     int                 acpi_lid_switch_sx;
   67 
   68     int                 acpi_standby_sx;
   69     int                 acpi_suspend_sx;
   70 
   71     int                 acpi_sleep_delay;
   72     int                 acpi_s4bios;
   73     int                 acpi_do_disable;
   74     int                 acpi_verbose;
   75     int                 acpi_handle_reboot;
   76 
   77     bus_dma_tag_t       acpi_waketag;
   78     bus_dmamap_t        acpi_wakemap;
   79     vm_offset_t         acpi_wakeaddr;
   80     vm_paddr_t          acpi_wakephys;
   81 
   82     int                 acpi_next_sstate;       /* Next suspend Sx state. */
   83     struct apm_clone_data *acpi_clone;          /* Pseudo-dev for devd(8). */
   84     STAILQ_HEAD(,apm_clone_data) apm_cdevs;     /* All apm/apmctl/acpi cdevs. */
   85     struct callout      susp_force_to;          /* Force suspend if no acks. */
   86 };
   87 
   88 struct acpi_device {
   89     /* ACPI ivars */
   90     ACPI_HANDLE                 ad_handle;
   91     uintptr_t                   ad_magic;
   92     void                        *ad_private;
   93     int                         ad_flags;
   94 
   95     /* Resources */
   96     struct resource_list        ad_rl;
   97 };
   98 
   99 /* Track device (/dev/{apm,apmctl} and /dev/acpi) notification status. */
  100 struct apm_clone_data {
  101     STAILQ_ENTRY(apm_clone_data) entries;
  102     struct cdev         *cdev;
  103     int                 flags;
  104 #define ACPI_EVF_NONE   0       /* /dev/apm semantics */
  105 #define ACPI_EVF_DEVD   1       /* /dev/acpi is handled via devd(8) */
  106 #define ACPI_EVF_WRITE  2       /* Device instance is opened writable. */
  107     int                 notify_status;
  108 #define APM_EV_NONE     0       /* Device not yet aware of pending sleep. */
  109 #define APM_EV_NOTIFIED 1       /* Device saw next sleep state. */
  110 #define APM_EV_ACKED    2       /* Device agreed sleep can occur. */
  111     struct acpi_softc   *acpi_sc;
  112     struct selinfo      sel_read;
  113 };
  114 
  115 #define ACPI_PRW_MAX_POWERRES   8
  116 
  117 struct acpi_prw_data {
  118     ACPI_HANDLE         gpe_handle;
  119     int                 gpe_bit;
  120     int                 lowest_wake;
  121     ACPI_OBJECT         power_res[ACPI_PRW_MAX_POWERRES];
  122     int                 power_res_count;
  123 };
  124 
  125 /* Flags for each device defined in the AML namespace. */
  126 #define ACPI_FLAG_WAKE_ENABLED  0x1
  127 
  128 /* Macros for extracting parts of a PCI address from an _ADR value. */
  129 #define ACPI_ADR_PCI_SLOT(adr)  (((adr) & 0xffff0000) >> 16)
  130 #define ACPI_ADR_PCI_FUNC(adr)  ((adr) & 0xffff)
  131 
  132 /*
  133  * Entry points to ACPI from above are global functions defined in this
  134  * file, sysctls, and I/O on the control device.  Entry points from below
  135  * are interrupts (the SCI), notifies, task queue threads, and the thermal
  136  * zone polling thread.
  137  *
  138  * ACPI tables and global shared data are protected by a global lock
  139  * (acpi_mutex).  
  140  *
  141  * Each ACPI device can have its own driver-specific mutex for protecting
  142  * shared access to local data.  The ACPI_LOCK macros handle mutexes.
  143  *
  144  * Drivers that need to serialize access to functions (e.g., to route
  145  * interrupts, get/set control paths, etc.) should use the sx lock macros
  146  * (ACPI_SERIAL).
  147  *
  148  * ACPI-CA handles its own locking and should not be called with locks held.
  149  *
  150  * The most complicated path is:
  151  *     GPE -> EC runs _Qxx -> _Qxx reads EC space -> GPE
  152  */
  153 extern struct mtx                       acpi_mutex;
  154 #define ACPI_LOCK(sys)                  mtx_lock(&sys##_mutex)
  155 #define ACPI_UNLOCK(sys)                mtx_unlock(&sys##_mutex)
  156 #define ACPI_LOCK_ASSERT(sys)           mtx_assert(&sys##_mutex, MA_OWNED);
  157 #define ACPI_LOCK_DECL(sys, name)                               \
  158         static struct mtx sys##_mutex;                          \
  159         MTX_SYSINIT(sys##_mutex, &sys##_mutex, name, MTX_DEF)
  160 #define ACPI_SERIAL_BEGIN(sys)          sx_xlock(&sys##_sxlock)
  161 #define ACPI_SERIAL_END(sys)            sx_xunlock(&sys##_sxlock)
  162 #define ACPI_SERIAL_ASSERT(sys)         sx_assert(&sys##_sxlock, SX_XLOCKED);
  163 #define ACPI_SERIAL_DECL(sys, name)                             \
  164         static struct sx sys##_sxlock;                          \
  165         SX_SYSINIT(sys##_sxlock, &sys##_sxlock, name)
  166 
  167 /*
  168  * ACPI CA does not define layers for non-ACPI CA drivers.
  169  * We define some here within the range provided.
  170  */
  171 #define ACPI_AC_ADAPTER         0x00010000
  172 #define ACPI_BATTERY            0x00020000
  173 #define ACPI_BUS                0x00040000
  174 #define ACPI_BUTTON             0x00080000
  175 #define ACPI_EC                 0x00100000
  176 #define ACPI_FAN                0x00200000
  177 #define ACPI_POWERRES           0x00400000
  178 #define ACPI_PROCESSOR          0x00800000
  179 #define ACPI_THERMAL            0x01000000
  180 #define ACPI_TIMER              0x02000000
  181 #define ACPI_OEM                0x04000000
  182 
  183 /*
  184  * Constants for different interrupt models used with acpi_SetIntrModel().
  185  */
  186 #define ACPI_INTR_PIC           0
  187 #define ACPI_INTR_APIC          1
  188 #define ACPI_INTR_SAPIC         2
  189 
  190 /*
  191  * Various features and capabilities for the acpi_get_features() method.
  192  * In particular, these are used for the ACPI 3.0 _PDC and _OSC methods.
  193  * See the Intel document titled "Processor Driver Capabilities Bit
  194  * Definitions", number 302223-002.
  195  */
  196 #define ACPI_CAP_PERF_MSRS      (1 << 0) /* Intel SpeedStep PERF_CTL MSRs */
  197 #define ACPI_CAP_C1_IO_HALT     (1 << 1) /* Intel C1 "IO then halt" sequence */
  198 #define ACPI_CAP_THR_MSRS       (1 << 2) /* Intel OnDemand throttling MSRs */
  199 #define ACPI_CAP_SMP_SAME       (1 << 3) /* MP C1, Px, and Tx (all the same) */
  200 #define ACPI_CAP_SMP_SAME_C3    (1 << 4) /* MP C2 and C3 (all the same) */
  201 #define ACPI_CAP_SMP_DIFF_PX    (1 << 5) /* MP Px (different, using _PSD) */
  202 #define ACPI_CAP_SMP_DIFF_CX    (1 << 6) /* MP Cx (different, using _CSD) */
  203 #define ACPI_CAP_SMP_DIFF_TX    (1 << 7) /* MP Tx (different, using _TSD) */
  204 #define ACPI_CAP_SMP_C1_NATIVE  (1 << 8) /* MP C1 support other than halt */
  205 
  206 /*
  207  * Quirk flags.
  208  *
  209  * ACPI_Q_BROKEN: Disables all ACPI support.
  210  * ACPI_Q_TIMER: Disables support for the ACPI timer.
  211  * ACPI_Q_MADT_IRQ0: Specifies that ISA IRQ 0 is wired up to pin 0 of the
  212  *      first APIC and that the MADT should force that by ignoring the PC-AT
  213  *      compatible flag and ignoring overrides that redirect IRQ 0 to pin 2.
  214  */
  215 extern int      acpi_quirks;
  216 #define ACPI_Q_OK               0
  217 #define ACPI_Q_BROKEN           (1 << 0)
  218 #define ACPI_Q_TIMER            (1 << 1)
  219 #define ACPI_Q_MADT_IRQ0        (1 << 2)
  220 
  221 /*
  222  * Note that the low ivar values are reserved to provide
  223  * interface compatibility with ISA drivers which can also
  224  * attach to ACPI.
  225  */
  226 #define ACPI_IVAR_HANDLE        0x100
  227 #define ACPI_IVAR_MAGIC         0x101
  228 #define ACPI_IVAR_PRIVATE       0x102
  229 #define ACPI_IVAR_FLAGS         0x103
  230 
  231 /*
  232  * Accessor functions for our ivars.  Default value for BUS_READ_IVAR is
  233  * (type) 0.  The <sys/bus.h> accessor functions don't check return values.
  234  */
  235 #define __ACPI_BUS_ACCESSOR(varp, var, ivarp, ivar, type)       \
  236                                                                 \
  237 static __inline type varp ## _get_ ## var(device_t dev)         \
  238 {                                                               \
  239     uintptr_t v = 0;                                            \
  240     BUS_READ_IVAR(device_get_parent(dev), dev,                  \
  241         ivarp ## _IVAR_ ## ivar, &v);                           \
  242     return ((type) v);                                          \
  243 }                                                               \
  244                                                                 \
  245 static __inline void varp ## _set_ ## var(device_t dev, type t) \
  246 {                                                               \
  247     uintptr_t v = (uintptr_t) t;                                \
  248     BUS_WRITE_IVAR(device_get_parent(dev), dev,                 \
  249         ivarp ## _IVAR_ ## ivar, v);                            \
  250 }
  251 
  252 __ACPI_BUS_ACCESSOR(acpi, handle, ACPI, HANDLE, ACPI_HANDLE)
  253 __ACPI_BUS_ACCESSOR(acpi, magic, ACPI, MAGIC, uintptr_t)
  254 __ACPI_BUS_ACCESSOR(acpi, private, ACPI, PRIVATE, void *)
  255 __ACPI_BUS_ACCESSOR(acpi, flags, ACPI, FLAGS, int)
  256 
  257 void acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data);
  258 static __inline device_t
  259 acpi_get_device(ACPI_HANDLE handle)
  260 {
  261     void *dev = NULL;
  262     AcpiGetData(handle, acpi_fake_objhandler, &dev);
  263     return ((device_t)dev);
  264 }
  265 
  266 static __inline ACPI_OBJECT_TYPE
  267 acpi_get_type(device_t dev)
  268 {
  269     ACPI_HANDLE         h;
  270     ACPI_OBJECT_TYPE    t;
  271 
  272     if ((h = acpi_get_handle(dev)) == NULL)
  273         return (ACPI_TYPE_NOT_FOUND);
  274     if (AcpiGetType(h, &t) != AE_OK)
  275         return (ACPI_TYPE_NOT_FOUND);
  276     return (t);
  277 }
  278 
  279 #ifdef ACPI_DEBUGGER
  280 void            acpi_EnterDebugger(void);
  281 #endif
  282 
  283 #ifdef ACPI_DEBUG
  284 #include <sys/cons.h>
  285 #define STEP(x)         do {printf x, printf("\n"); cngetc();} while (0)
  286 #else
  287 #define STEP(x)
  288 #endif
  289 
  290 #define ACPI_VPRINT(dev, acpi_sc, x...) do {                    \
  291     if (acpi_get_verbose(acpi_sc))                              \
  292         device_printf(dev, x);                                  \
  293 } while (0)
  294 
  295 /* Values for the device _STA (status) method. */
  296 #define ACPI_STA_PRESENT        (1 << 0)
  297 #define ACPI_STA_ENABLED        (1 << 1)
  298 #define ACPI_STA_SHOW_IN_UI     (1 << 2)
  299 #define ACPI_STA_FUNCTIONAL     (1 << 3)
  300 #define ACPI_STA_BATT_PRESENT   (1 << 4)
  301 
  302 #define ACPI_DEVINFO_PRESENT(x, flags)                                  \
  303         (((x) & (flags)) == (flags))
  304 #define ACPI_DEVICE_PRESENT(x)                                          \
  305         ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL)
  306 #define ACPI_BATTERY_PRESENT(x)                                         \
  307         ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL | \
  308             ACPI_STA_BATT_PRESENT)
  309 
  310 BOOLEAN         acpi_DeviceIsPresent(device_t dev);
  311 BOOLEAN         acpi_BatteryIsPresent(device_t dev);
  312 ACPI_STATUS     acpi_GetHandleInScope(ACPI_HANDLE parent, char *path,
  313                     ACPI_HANDLE *result);
  314 uint32_t        acpi_TimerDelta(uint32_t end, uint32_t start);
  315 ACPI_BUFFER     *acpi_AllocBuffer(int size);
  316 ACPI_STATUS     acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp,
  317                     UINT32 *number);
  318 ACPI_STATUS     acpi_GetInteger(ACPI_HANDLE handle, char *path,
  319                     UINT32 *number);
  320 ACPI_STATUS     acpi_SetInteger(ACPI_HANDLE handle, char *path,
  321                     UINT32 number);
  322 ACPI_STATUS     acpi_ForeachPackageObject(ACPI_OBJECT *obj, 
  323                     void (*func)(ACPI_OBJECT *comp, void *arg), void *arg);
  324 ACPI_STATUS     acpi_FindIndexedResource(ACPI_BUFFER *buf, int index,
  325                     ACPI_RESOURCE **resp);
  326 ACPI_STATUS     acpi_AppendBufferResource(ACPI_BUFFER *buf,
  327                     ACPI_RESOURCE *res);
  328 ACPI_STATUS     acpi_OverrideInterruptLevel(UINT32 InterruptNumber);
  329 ACPI_STATUS     acpi_SetIntrModel(int model);
  330 int             acpi_ReqSleepState(struct acpi_softc *sc, int state);
  331 int             acpi_AckSleepState(struct apm_clone_data *clone, int error);
  332 ACPI_STATUS     acpi_SetSleepState(struct acpi_softc *sc, int state);
  333 int             acpi_wake_init(device_t dev, int type);
  334 int             acpi_wake_set_enable(device_t dev, int enable);
  335 int             acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
  336 ACPI_STATUS     acpi_Startup(void);
  337 void            acpi_UserNotify(const char *subsystem, ACPI_HANDLE h,
  338                     uint8_t notify);
  339 int             acpi_bus_alloc_gas(device_t dev, int *type, int *rid,
  340                     ACPI_GENERIC_ADDRESS *gas, struct resource **res,
  341                     u_int flags);
  342 
  343 struct acpi_parse_resource_set {
  344     void        (*set_init)(device_t dev, void *arg, void **context);
  345     void        (*set_done)(device_t dev, void *context);
  346     void        (*set_ioport)(device_t dev, void *context, uint32_t base,
  347                     uint32_t length);
  348     void        (*set_iorange)(device_t dev, void *context, uint32_t low,
  349                     uint32_t high, uint32_t length, uint32_t align);
  350     void        (*set_memory)(device_t dev, void *context, uint32_t base,
  351                     uint32_t length);
  352     void        (*set_memoryrange)(device_t dev, void *context, uint32_t low,
  353                     uint32_t high, uint32_t length, uint32_t align);
  354     void        (*set_irq)(device_t dev, void *context, u_int8_t *irq,
  355                     int count, int trig, int pol);
  356     void        (*set_ext_irq)(device_t dev, void *context, u_int32_t *irq,
  357                     int count, int trig, int pol);
  358     void        (*set_drq)(device_t dev, void *context, u_int8_t *drq,
  359                     int count);
  360     void        (*set_start_dependent)(device_t dev, void *context,
  361                     int preference);
  362     void        (*set_end_dependent)(device_t dev, void *context);
  363 };
  364 
  365 extern struct   acpi_parse_resource_set acpi_res_parse_set;
  366 
  367 void            acpi_config_intr(device_t dev, ACPI_RESOURCE *res);
  368 ACPI_STATUS     acpi_lookup_irq_resource(device_t dev, int rid,
  369                     struct resource *res, ACPI_RESOURCE *acpi_res);
  370 ACPI_STATUS     acpi_parse_resources(device_t dev, ACPI_HANDLE handle,
  371                     struct acpi_parse_resource_set *set, void *arg);
  372 
  373 /* ACPI event handling */
  374 UINT32          acpi_event_power_button_sleep(void *context);
  375 UINT32          acpi_event_power_button_wake(void *context);
  376 UINT32          acpi_event_sleep_button_sleep(void *context);
  377 UINT32          acpi_event_sleep_button_wake(void *context);
  378 
  379 #define ACPI_EVENT_PRI_FIRST      0
  380 #define ACPI_EVENT_PRI_DEFAULT    10000
  381 #define ACPI_EVENT_PRI_LAST       20000
  382 
  383 typedef void (*acpi_event_handler_t)(void *, int);
  384 
  385 EVENTHANDLER_DECLARE(acpi_sleep_event, acpi_event_handler_t);
  386 EVENTHANDLER_DECLARE(acpi_wakeup_event, acpi_event_handler_t);
  387 
  388 /* Device power control. */
  389 ACPI_STATUS     acpi_pwr_wake_enable(ACPI_HANDLE consumer, int enable);
  390 ACPI_STATUS     acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state);
  391 
  392 /* Misc. */
  393 static __inline struct acpi_softc *
  394 acpi_device_get_parent_softc(device_t child)
  395 {
  396     device_t    parent;
  397 
  398     parent = device_get_parent(child);
  399     if (parent == NULL)
  400         return (NULL);
  401     return (device_get_softc(parent));
  402 }
  403 
  404 static __inline int
  405 acpi_get_verbose(struct acpi_softc *sc)
  406 {
  407     if (sc)
  408         return (sc->acpi_verbose);
  409     return (0);
  410 }
  411 
  412 char            *acpi_name(ACPI_HANDLE handle);
  413 int             acpi_avoid(ACPI_HANDLE handle);
  414 int             acpi_disabled(char *subsys);
  415 int             acpi_machdep_init(device_t dev);
  416 void            acpi_install_wakeup_handler(struct acpi_softc *sc);
  417 int             acpi_sleep_machdep(struct acpi_softc *sc, int state);
  418 int             acpi_table_quirks(int *quirks);
  419 int             acpi_machdep_quirks(int *quirks);
  420 
  421 /* Battery Abstraction. */
  422 struct acpi_battinfo;
  423 
  424 int             acpi_battery_register(device_t dev);
  425 int             acpi_battery_remove(device_t dev);
  426 int             acpi_battery_get_units(void);
  427 int             acpi_battery_get_info_expire(void);
  428 int             acpi_battery_bst_valid(struct acpi_bst *bst);
  429 int             acpi_battery_bif_valid(struct acpi_bif *bif);
  430 int             acpi_battery_get_battinfo(device_t dev,
  431                     struct acpi_battinfo *info);
  432 
  433 /* Embedded controller. */
  434 void            acpi_ec_ecdt_probe(device_t);
  435 
  436 /* AC adapter interface. */
  437 int             acpi_acad_get_acline(int *);
  438 
  439 /* Package manipulation convenience functions. */
  440 #define ACPI_PKG_VALID(pkg, size)                               \
  441     ((pkg) != NULL && (pkg)->Type == ACPI_TYPE_PACKAGE &&       \
  442      (pkg)->Package.Count >= (size))
  443 int             acpi_PkgInt(ACPI_OBJECT *res, int idx, ACPI_INTEGER *dst);
  444 int             acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst);
  445 int             acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size);
  446 int             acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type,
  447                     int *rid, struct resource **dst, u_int flags);
  448 ACPI_HANDLE     acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj);
  449 
  450 /*
  451  * Base level for BUS_ADD_CHILD.  Special devices are added at orders less
  452  * than this, and normal devices at or above this level.  This keeps the
  453  * probe order sorted so that things like sysresource are available before
  454  * their children need them.
  455  */
  456 #define ACPI_DEV_BASE_ORDER     10
  457 
  458 /* Default number of task queue threads to start. */
  459 #ifndef ACPI_MAX_THREADS
  460 #define ACPI_MAX_THREADS        3
  461 #endif
  462 
  463 /* Use the device logging level for ktr(4). */
  464 #define KTR_ACPI                KTR_DEV
  465 
  466 #endif /* _KERNEL */
  467 #endif /* !_ACPIVAR_H_ */

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