/*-
 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
 * Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
 * Copyright (c) 2000 BSDi
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/dev/acpica/acpivar.h,v 1.108.8.1 2009/04/15 03:14:26 kensmith Exp $
 */

#ifndef _ACPIVAR_H_
#define _ACPIVAR_H_

#ifdef _KERNEL


#include <sys/eventhandler.h>
#include <sys/sysctl.h>
#include <sys/lock.h>
#include <sys/bus.h>
#include <sys/power.h>
#include <sys/spinlock.h>
#include <sys/spinlock2.h>
#include <sys/serialize.h>
#include <contrib/dev/acpica/source/include/acmacros.h>
#include <contrib/dev/acpica/source/include/acconfig.h>
#include <contrib/dev/acpica/source/include/aclocal.h>
#include <contrib/dev/acpica/source/include/acobject.h>
#include <contrib/dev/acpica/source/include/acstruct.h>
#include <contrib/dev/acpica/source/include/acutils.h>

#include "acpi_if.h"

struct apm_clone_data;
struct acpi_softc {
    device_t            acpi_dev;
    cdev_t              acpi_dev_t;

    struct resource     *acpi_irq;
    int                 acpi_irq_rid;
    void                *acpi_irq_handle;

    int                 acpi_enabled;
    int                 acpi_sstate;
    int                 acpi_sleep_disabled;

    struct sysctl_ctx_list acpi_sysctl_ctx;
    struct sysctl_oid   *acpi_sysctl_tree;
    int                 acpi_power_button_sx;
    int                 acpi_sleep_button_sx;
    int                 acpi_lid_switch_sx;

    int                 acpi_standby_sx;
    int                 acpi_suspend_sx;

    int                 acpi_sleep_delay;
    int                 acpi_s4bios;
    int                 acpi_do_disable;
    int                 acpi_verbose;
    int                 acpi_handle_reboot;

    bus_dma_tag_t       acpi_waketag;
    bus_dmamap_t        acpi_wakemap;
    vm_offset_t         acpi_wakeaddr;
    vm_paddr_t          acpi_wakephys;

    int                 acpi_next_sstate;       /* Next suspend Sx state. */
    struct apm_clone_data *acpi_clone;          /* Pseudo-dev for devd(8). */
    STAILQ_HEAD(,apm_clone_data) apm_cdevs;     /* All apm/apmctl/acpi cdevs. */
    struct callout      susp_force_to;          /* Force suspend if no acks. */
};

struct acpi_device {
    /* ACPI ivars */
    ACPI_HANDLE                 ad_handle;
    uintptr_t                   ad_magic;
    void                        *ad_private;
    int                         ad_flags;
    int                         ad_recheck;     /* Should re-check presence. */

    /* Resources */
    struct resource_list        ad_rl;
};

/* Track device (/dev/{apm,apmctl} and /dev/acpi) notification status. */
struct apm_clone_data {
    STAILQ_ENTRY(apm_clone_data) entries;
    struct cdev         *cdev;
    int                 flags;
#define ACPI_EVF_NONE   0       /* /dev/apm semantics */
#define ACPI_EVF_DEVD   1       /* /dev/acpi is handled via devd(8) */
#define ACPI_EVF_WRITE  2       /* Device instance is opened writable. */
    int                 notify_status;
#define APM_EV_NONE     0       /* Device not yet aware of pending sleep. */
#define APM_EV_NOTIFIED 1       /* Device saw next sleep state. */
#define APM_EV_ACKED    2       /* Device agreed sleep can occur. */
    struct acpi_softc   *acpi_sc;
};

#define ACPI_PRW_MAX_POWERRES   8

struct acpi_prw_data {
    ACPI_HANDLE         gpe_handle;
    int                 gpe_bit;
    int                 lowest_wake;
    ACPI_OBJECT         power_res[ACPI_PRW_MAX_POWERRES];
    int                 power_res_count;
};

/* Flags for each device defined in the AML namespace. */
#define ACPI_FLAG_WAKE_ENABLED  0x1

/* Macros for extracting parts of a PCI address from an _ADR value. */
#define ACPI_ADR_PCI_SLOT(adr)  (((adr) & 0xffff0000) >> 16)
#define ACPI_ADR_PCI_FUNC(adr)  ((adr) & 0xffff)

/*
 * Entry points to ACPI from above are global functions defined in this
 * file, sysctls, and I/O on the control device.  Entry points from below
 * are interrupts (the SCI), notifies, task queue threads, and the thermal
 * zone polling thread.
 *
 * ACPI tables and global shared data are protected by a global lock
 * (acpi_lock).
 *
 * Each ACPI device can have its own driver-specific mutex for protecting
 * shared access to local data.  The ACPI_LOCK macros handle mutexes.
 *
 * Drivers that need to serialize access to functions (e.g., to route
 * interrupts, get/set control paths, etc.) should use the sx lock macros
 * (ACPI_SERIAL).
 *
 * ACPICA handles its own locking and should not be called with locks held.
 *
 * The most complicated path is:
 *     GPE -> EC runs _Qxx -> _Qxx reads EC space -> GPE
 */
extern struct lock acpi_lock;
extern struct lwkt_token acpi_token;
/* acpi_thermal does lock recurs on purpose */
/* I bet I should use some other locks here */
#define ACPI_LOCK(sys)                  lockmgr(&sys##_lock, LK_EXCLUSIVE|LK_RETRY|LK_CANRECURSE)
#define ACPI_UNLOCK(sys)                lockmgr(&sys##_lock, LK_RELEASE)
#define ACPI_LOCK_ASSERT(sys)           KKASSERT(lockstatus(&sys##_lock, curthread) == LK_EXCLUSIVE)
#define ACPI_ASSERTLOCK ACPI_LOCK_ASSERT
#define ACPI_LOCK_DECL(sys, name)       static struct lock sys##_lock
#define ACPI_LOCK_INIT(sys, name)       lockinit(&sys##_lock, name, 0, 0)

#define ACPI_SERIAL_INIT(sys)           lockinit(&sys##_serial, #sys, 0, 0)
#define ACPI_SERIAL_BEGIN(sys)          lockmgr(&sys##_serial, LK_EXCLUSIVE|LK_RETRY)
#define ACPI_SERIAL_END(sys)            lockmgr(&sys##_serial, LK_RELEASE)
#define ACPI_SERIAL_ASSERT(sys)         KKASSERT(lockstatus(&sys##_serial, curthread) == LK_EXCLUSIVE)
#define ACPI_SERIAL_DECL(sys, name)     static struct lock sys##_serial

/*
 * ACPICA does not define layers for non-ACPICA drivers.
 * We define some here within the range provided.
 */
#define ACPI_AC_ADAPTER         0x00010000
#define ACPI_BATTERY            0x00020000
#define ACPI_BUS                0x00040000
#define ACPI_BUTTON             0x00080000
#define ACPI_EC                 0x00100000
#define ACPI_FAN                0x00200000
#define ACPI_POWERRES           0x00400000
#define ACPI_PROCESSOR          0x00800000
#define ACPI_THERMAL            0x01000000
#define ACPI_TIMER              0x02000000
#define ACPI_OEM                0x04000000

/*
 * Constants for different interrupt models used with acpi_SetIntrModel().
 */
#define ACPI_INTR_PIC           0
#define ACPI_INTR_APIC          1
#define ACPI_INTR_SAPIC         2

/*
 * Various features and capabilities for the acpi_eval_osc() method.
 */
#define ACPI_OSC_QUERY_SUPPORT  (1 << 0) /* Query Support Flag */

#define ACPI_OSC_ERRMASK        0x0000001e
#define ACPI_OSCERR_FAILURE     (1 << 1) /* _OSC failure */
#define ACPI_OSCERR_BADUUID     (1 << 2) /* Unrecognized UUID */
#define ACPI_OSCERR_BADREV      (1 << 3) /* Unrecognized revision ID */
#define ACPI_OSCERR_CAPSMASKED  (1 << 4) /* Capabilities have been cleared */

/*
 * Intel CPU _OSC capabilities, see "Intel Processor Vendor-Specific ACPI",
 * number 302223-007.
 */
#define ACPI_PDC_PX_MSR         (1 << 0) /* Intel SpeedStep PERF_CTL MSRs */
#define ACPI_PDC_MP_C1_IO_HALT  (1 << 1) /* Intel C1 "IO then halt" sequence */
#define ACPI_PDC_TX_MSR         (1 << 2) /* Intel OnDemand throttling MSRs */
#define ACPI_PDC_MP_C1PXTX      (1 << 3) /* MP C1, Px, and Tx */
#define ACPI_PDC_MP_C2C3        (1 << 4) /* MP C2 and C3 */
#define ACPI_PDC_MP_PX_SWCOORD  (1 << 5) /* MP Px, using _PSD */
#define ACPI_PDC_MP_CX_SWCOORD  (1 << 6) /* MP Cx, using _CSD */
#define ACPI_PDC_MP_TX_SWCOORD  (1 << 7) /* MP Tx, using _TSD */
#define ACPI_PDC_MP_C1_NATIVE   (1 << 8) /* MP C1 support other than halt */
#define ACPI_PDC_MP_C2C3_NATIVE (1 << 9) /* MP C2 and C3 support */
#define ACPI_PDC_PX_HWCOORD     (1 << 11)/* Hardware coordination of Px */

/*
 * Quirk flags.
 *
 * ACPI_Q_BROKEN: Disables all ACPI support.
 * ACPI_Q_TIMER: Disables support for the ACPI timer.
 * ACPI_Q_MADT_IRQ0: Specifies that ISA IRQ 0 is wired up to pin 0 of the
 *      first APIC and that the MADT should force that by ignoring the PC-AT
 *      compatible flag and ignoring overrides that redirect IRQ 0 to pin 2.
 * ACPI_Q_BATT_RATE_ABS: Specifies that the DSDT reports a negative 16-bit
 *      value for charging/discharging current and/or 0 as 65536.
 */
extern int      acpi_quirks;
#define ACPI_Q_OK               0
#define ACPI_Q_BROKEN           (1 << 0)
#define ACPI_Q_TIMER            (1 << 1)
#define ACPI_Q_MADT_IRQ0        (1 << 2)
#define ACPI_Q_BATT_RATE_ABS    (1 << 3)

#if defined(__x86_64__)
/*
 * Certain Intel BIOSes have buggy AML that specify an IRQ that is
 * edge-sensitive and active-lo.  Normally, edge-sensitive IRQs should
 * be active-hi.  If this value is non-zero, edge-sensitive ISA IRQs
 * are forced to be active-hi instead.  At least some AMD systems use
 * active-lo edge-sensitive ISA IRQs, so this setting is only enabled
 * by default on systems with Intel CPUs.
 */
extern int      acpi_override_isa_irq_polarity;
#endif

/*
 * Note that the low ivar values are reserved to provide
 * interface compatibility with ISA drivers which can also
 * attach to ACPI.
 */
#define ACPI_IVAR_HANDLE        0x100
#define ACPI_IVAR_MAGIC         0x101
#define ACPI_IVAR_PRIVATE       0x102
#define ACPI_IVAR_FLAGS         0x103
#define ACPI_IVAR_RECHECK       0x104

/*
 * Accessor functions for our ivars.  Default value for BUS_READ_IVAR is
 * (type) 0.  The <sys/bus.h> accessor functions don't check return values.
 */
#define __ACPI_BUS_ACCESSOR(varp, var, ivarp, ivar, type)       \
                                                                \
static __inline type varp ## _get_ ## var(device_t dev)         \
{                                                               \
    uintptr_t v = 0;                                            \
    BUS_READ_IVAR(device_get_parent(dev), dev,                  \
        ivarp ## _IVAR_ ## ivar, &v);                           \
    return ((type) v);                                          \
}                                                               \
                                                                \
static __inline void varp ## _set_ ## var(device_t dev, type t) \
{                                                               \
    uintptr_t v = (uintptr_t) t;                                \
    BUS_WRITE_IVAR(device_get_parent(dev), dev,                 \
        ivarp ## _IVAR_ ## ivar, v);                            \
}

__ACPI_BUS_ACCESSOR(acpi, handle, ACPI, HANDLE, ACPI_HANDLE)
__ACPI_BUS_ACCESSOR(acpi, magic, ACPI, MAGIC, uintptr_t)
__ACPI_BUS_ACCESSOR(acpi, private, ACPI, PRIVATE, void *)
__ACPI_BUS_ACCESSOR(acpi, flags, ACPI, FLAGS, int)
__ACPI_BUS_ACCESSOR(acpi, recheck, ACPI, RECHECK, int)

void acpi_fake_objhandler(ACPI_HANDLE h, void *data);
static __inline device_t
acpi_get_device(ACPI_HANDLE handle)
{
    void *dev = NULL;
    AcpiGetData(handle, acpi_fake_objhandler, &dev);
    return ((device_t)dev);
}

static __inline ACPI_OBJECT_TYPE
acpi_get_type(device_t dev)
{
    ACPI_HANDLE         h;
    ACPI_OBJECT_TYPE    t;

    if ((h = acpi_get_handle(dev)) == NULL)
        return (ACPI_TYPE_NOT_FOUND);
    if (ACPI_FAILURE(AcpiGetType(h, &t)))
        return (ACPI_TYPE_NOT_FOUND);
    return (t);
}

/* Find the difference between two PM tick counts. */
static __inline uint32_t
acpi_TimerDelta(uint32_t end, uint32_t start)
{

        if (end < start && (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) == 0)
                end |= 0x01000000;
        return (end - start);
}

#ifdef ACPI_DEBUG
#include <sys/cons.h>
#define STEP(x)         do {printf x, printf("\n"); cngetc();} while (0)
#else
#define STEP(x)
#endif

#define ACPI_VPRINT(dev, acpi_sc, x...) do {                    \
    if (acpi_get_verbose(acpi_sc))                              \
        device_printf(dev, x);                                  \
} while (0)

/* Values for the device _STA (status) method. */
#define ACPI_STA_PRESENT        (1 << 0)
#define ACPI_STA_ENABLED        (1 << 1)
#define ACPI_STA_SHOW_IN_UI     (1 << 2)
#define ACPI_STA_FUNCTIONAL     (1 << 3)
#define ACPI_STA_BATT_PRESENT   (1 << 4)

#define ACPI_DEVINFO_PRESENT(x, flags)                                  \
        (((x) & (flags)) == (flags))
#define ACPI_DEVICE_PRESENT(x)                                          \
        ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL)
#define ACPI_BATTERY_PRESENT(x)                                         \
        ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL | \
            ACPI_STA_BATT_PRESENT)

BOOLEAN         acpi_DeviceIsPresent(device_t dev);
BOOLEAN         acpi_BatteryIsPresent(device_t dev);
ACPI_STATUS     acpi_GetHandleInScope(ACPI_HANDLE parent, char *path,
                    ACPI_HANDLE *result);
ACPI_BUFFER     *acpi_AllocBuffer(int size);
ACPI_STATUS     acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp,
                    UINT32 *number);
ACPI_STATUS     acpi_GetInteger(ACPI_HANDLE handle, char *path,
                    UINT32 *number);
ACPI_STATUS     acpi_SetInteger(ACPI_HANDLE handle, char *path,
                    UINT32 number);
ACPI_STATUS     acpi_ForeachPackageObject(ACPI_OBJECT *obj, 
                    void (*func)(ACPI_OBJECT *comp, void *arg), void *arg);
ACPI_STATUS     acpi_FindIndexedResource(ACPI_BUFFER *buf, int index,
                    ACPI_RESOURCE **resp);
ACPI_STATUS     acpi_AppendBufferResource(ACPI_BUFFER *buf,
                    ACPI_RESOURCE *res);
ACPI_STATUS     acpi_SetIntrModel(int model);
int             acpi_ReqSleepState(struct acpi_softc *sc, int state);
int             acpi_AckSleepState(struct apm_clone_data *clone, int error);
ACPI_STATUS     acpi_SetSleepState(struct acpi_softc *sc, int state);
int             acpi_wake_set_enable(device_t dev, int enable);
int             acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
ACPI_STATUS     acpi_Startup(void);
void            acpi_UserNotify(const char *subsystem, ACPI_HANDLE h,
                    uint8_t notify);
int             acpi_bus_alloc_gas(device_t dev, int *type, int *rid,
                    ACPI_GENERIC_ADDRESS *gas, struct resource **res,
                    u_int flags);
ACPI_STATUS     acpi_eval_osc(device_t dev, ACPI_HANDLE handle,
                    const char *uuidstr, int revision, uint32_t *buf,
                    int count);

struct acpi_parse_resource_set {
    void        (*set_init)(device_t dev, void *arg, void **context);
    void        (*set_done)(device_t dev, void *context);
    void        (*set_ioport)(device_t dev, void *context, uint64_t base,
                    uint64_t length);
    void        (*set_iorange)(device_t dev, void *context, uint64_t low,
                    uint64_t high, uint64_t length, uint64_t align);
    void        (*set_memory)(device_t dev, void *context, uint64_t base,
                    uint64_t length);
    void        (*set_memoryrange)(device_t dev, void *context, uint64_t low,
                    uint64_t high, uint64_t length, uint64_t align);
    void        (*set_irq)(device_t dev, void *context, uint8_t *irq,
                    int count, int trig, int pol);
    void        (*set_ext_irq)(device_t dev, void *context, uint32_t *irq,
                    int count, int trig, int pol);
    void        (*set_drq)(device_t dev, void *context, uint8_t *drq,
                    int count);
    void        (*set_start_dependent)(device_t dev, void *context,
                    int preference);
    void        (*set_end_dependent)(device_t dev, void *context);
};

extern struct   acpi_parse_resource_set acpi_res_parse_set;

void            acpi_config_intr(device_t dev, ACPI_RESOURCE *res);
ACPI_STATUS     acpi_lookup_irq_resource(device_t dev, int rid,
                    struct resource *res, ACPI_RESOURCE *acpi_res);
ACPI_STATUS     acpi_parse_resources(device_t dev, ACPI_HANDLE handle,
                    struct acpi_parse_resource_set *set, void *arg);

/* ACPI event handling */
UINT32          acpi_event_power_button_sleep(void *context);
UINT32          acpi_event_power_button_wake(void *context);
UINT32          acpi_event_sleep_button_sleep(void *context);
UINT32          acpi_event_sleep_button_wake(void *context);

#define ACPI_EVENT_PRI_FIRST      0
#define ACPI_EVENT_PRI_DEFAULT    10000
#define ACPI_EVENT_PRI_LAST       20000

typedef void (*acpi_event_handler_t)(void *, int);

EVENTHANDLER_DECLARE(acpi_sleep_event, acpi_event_handler_t);
EVENTHANDLER_DECLARE(acpi_wakeup_event, acpi_event_handler_t);

/* Device power control. */
ACPI_STATUS     acpi_pwr_wake_enable(ACPI_HANDLE consumer, int enable);
ACPI_STATUS     acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state);

/* Misc. */
static __inline struct acpi_softc *
acpi_device_get_parent_softc(device_t child)
{
    device_t    parent;

    parent = device_get_parent(child);
    if (parent == NULL)
        return (NULL);
    return (device_get_softc(parent));
}

static __inline int
acpi_get_verbose(struct acpi_softc *sc)
{
    if (sc)
        return (sc->acpi_verbose);
    return (0);
}

static __inline const char *
acpi_d_state_to_str(int state)
{
    KASSERT(state >= ACPI_STATE_D0 && state <= ACPI_D_STATES_MAX,
        ("state out of bounds"));
    return powerstate_to_str(state);
}

char            *acpi_name(ACPI_HANDLE handle);
int             acpi_avoid(ACPI_HANDLE handle);
int             acpi_disabled(char *subsys);
int             acpi_enabled(char *subsys);
int             acpi_machdep_init(device_t dev);
void            acpi_install_wakeup_handler(struct acpi_softc *sc);
int             acpi_sleep_machdep(struct acpi_softc *sc, int state);
int             acpi_table_quirks(int *quirks);
int             acpi_machdep_quirks(int *quirks);

/* Battery Abstraction. */
struct acpi_battinfo;

int             acpi_battery_register(device_t dev);
int             acpi_battery_remove(device_t dev);
int             acpi_battery_get_units(void);
int             acpi_battery_get_info_expire(void);
int             acpi_battery_bst_valid(struct acpi_bst *bst);
int             acpi_battery_bif_valid(struct acpi_bif *bif);
int             acpi_battery_get_battinfo(device_t dev,
                    struct acpi_battinfo *info);

/* Embedded controller. */
void            acpi_ec_ecdt_probe(device_t);

/* AC adapter interface. */
int             acpi_acad_get_acline(int *);

/* Package manipulation convenience functions. */
#define ACPI_PKG_VALID(pkg, size)                               \
    ((pkg) != NULL && (pkg)->Type == ACPI_TYPE_PACKAGE &&       \
     (pkg)->Package.Count >= (size))
#define ACPI_PKG_VALID_EQ(pkg, size)    \
    (ACPI_PKG_VALID((pkg), (size)) && (pkg)->Package.Count == (size))
int             acpi_PkgInt(ACPI_OBJECT *res, int idx, UINT64 *dst);
int             acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst);
int             acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size);
int             acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type,
                    int *rid, struct resource **dst, u_int flags);
int             acpi_PkgRawGas(ACPI_OBJECT *res, int idx,
                               ACPI_GENERIC_ADDRESS *gas);
ACPI_HANDLE     acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj);
/* ACPI task kernel thread initialization. */
int             acpi_task_thread_init(void);
void            acpi_task_thread_schedule(void);
extern BOOLEAN acpi_MatchHid(ACPI_HANDLE h, const char *hid);
extern BOOLEAN acpi_MatchUid(ACPI_HANDLE h, const char *uid);
/*
 * Base level for BUS_ADD_CHILD.  Special devices are added at orders less
 * than this, and normal devices at or above this level.  This keeps the
 * probe order sorted so that things like sysresource are available before
 * their children need them.
 */
#define ACPI_DEV_BASE_ORDER     10

/* Default number of task queue threads to start. */
#ifndef ACPI_MAX_THREADS
#define ACPI_MAX_THREADS        3
#endif

SYSCTL_DECL(_debug_acpi);

#endif /* _KERNEL */
#endif /* !_ACPIVAR_H_ */