C++ AcpiReadBitRegister函数代码示例

OStack程序员社区-中国程序员成长平台 › 门户 › 编程› C++›C++教程

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了C++中AcpiReadBitRegister函数的典型用法代码示例。如果您正苦于以下问题：C++ AcpiReadBitRegister函数的具体用法？C++ AcpiReadBitRegister怎么用？C++ AcpiReadBitRegister使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了AcpiReadBitRegister函数的14个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: AeHardwareInterfaces

static void
AeHardwareInterfaces (
    void)
{
    ACPI_STATUS             Status;
    UINT32                  Value;


    Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, 1);
    AE_CHECK_OK (AcpiWriteBitRegister, Status);

    Status = AcpiWriteBitRegister (ACPI_BITREG_GLOBAL_LOCK_ENABLE, 1);
    AE_CHECK_OK (AcpiWriteBitRegister, Status);

    Status = AcpiWriteBitRegister (ACPI_BITREG_SLEEP_ENABLE, 1);
    AE_CHECK_OK (AcpiWriteBitRegister, Status);

    Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 1);
    AE_CHECK_OK (AcpiWriteBitRegister, Status);


    Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &Value);
    AE_CHECK_OK (AcpiReadBitRegister, Status);

    Status = AcpiReadBitRegister (ACPI_BITREG_GLOBAL_LOCK_ENABLE, &Value);
    AE_CHECK_OK (AcpiReadBitRegister, Status);

    Status = AcpiReadBitRegister (ACPI_BITREG_SLEEP_ENABLE, &Value);
    AE_CHECK_OK (AcpiReadBitRegister, Status);

    Status = AcpiReadBitRegister (ACPI_BITREG_ARB_DISABLE, &Value);
    AE_CHECK_OK (AcpiReadBitRegister, Status);
}

开发者ID:CoryXie，项目名称:CellOS，代码行数:33，代码来源:aeexec.c

示例2: AcpiGetEventStatus

ACPI_STATUS
AcpiGetEventStatus (
    UINT32                  Event,
    ACPI_EVENT_STATUS       *EventStatus)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (AcpiGetEventStatus);


    if (!EventStatus)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Decode the Fixed Event */

    if (Event > ACPI_EVENT_MAX)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Get the status of the requested fixed event */

    Status = AcpiReadBitRegister (
                AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus);

    return_ACPI_STATUS (Status);
}

开发者ID:zenny，项目名称:DragonFlyBSD，代码行数:30，代码来源:evxfevnt.c

示例3: AcpiHwGetMode

UINT32
AcpiHwGetMode (
    void)
{
    ACPI_STATUS             Status;
    UINT32                  Value;


    ACPI_FUNCTION_TRACE (HwGetMode);


    /*
     * ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
     * system does not support mode transition.
     */
    if (!AcpiGbl_FADT.SmiCommand)
    {
        return_UINT32 (ACPI_SYS_MODE_ACPI);
    }

    Status = AcpiReadBitRegister (ACPI_BITREG_SCI_ENABLE, &Value);
    if (ACPI_FAILURE (Status))
    {
        return_UINT32 (ACPI_SYS_MODE_LEGACY);
    }

    if (Value)
    {
        return_UINT32 (ACPI_SYS_MODE_ACPI);
    }
    else
    {
        return_UINT32 (ACPI_SYS_MODE_LEGACY);
    }
}

开发者ID:ErfanBagheri，项目名称:haiku，代码行数:35，代码来源:hwacpi.c

示例4: AcpiEnterSleepStateS4bios

ACPI_STATUS
AcpiEnterSleepStateS4bios (
    void)
{
    UINT32                  InValue;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (AcpiEnterSleepStateS4bios);


    /* Clear the wake status bit (PM1) */

    Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    Status = AcpiHwClearAcpiStatus ();
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /*
     * 1) Disable/Clear all GPEs
     * 2) Enable all wakeup GPEs
     */
    Status = AcpiHwDisableAllGpes ();
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
    AcpiGbl_SystemAwakeAndRunning = FALSE;

    Status = AcpiHwEnableAllWakeupGpes ();
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    ACPI_FLUSH_CPU_CACHE ();

    Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand,
        (UINT32) AcpiGbl_FADT.S4BiosRequest, 8);

    do {
        AcpiOsStall (ACPI_USEC_PER_MSEC);
        Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }

    } while (!InValue);

    return_ACPI_STATUS (AE_OK);
}

开发者ID:ryo，项目名称:netbsd-src，代码行数:59，代码来源:hwxfsleep.c

示例5: AeHardwareInterfaces

static void
AeHardwareInterfaces (
    void)
{
#if (!ACPI_REDUCED_HARDWARE)

    ACPI_STATUS             Status;
    UINT32                  Value;


    /* If Hardware Reduced flag is set, we are all done */

    if (AcpiGbl_ReducedHardware)
    {
        return;
    }

    Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, 1);
    ACPI_CHECK_OK (AcpiWriteBitRegister, Status);

    Status = AcpiWriteBitRegister (ACPI_BITREG_GLOBAL_LOCK_ENABLE, 1);
    ACPI_CHECK_OK (AcpiWriteBitRegister, Status);

    Status = AcpiWriteBitRegister (ACPI_BITREG_SLEEP_ENABLE, 1);
    ACPI_CHECK_OK (AcpiWriteBitRegister, Status);

    Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 1);
    ACPI_CHECK_OK (AcpiWriteBitRegister, Status);


    Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &Value);
    ACPI_CHECK_OK (AcpiReadBitRegister, Status);

    Status = AcpiReadBitRegister (ACPI_BITREG_GLOBAL_LOCK_ENABLE, &Value);
    ACPI_CHECK_OK (AcpiReadBitRegister, Status);

    Status = AcpiReadBitRegister (ACPI_BITREG_SLEEP_ENABLE, &Value);
    ACPI_CHECK_OK (AcpiReadBitRegister, Status);

    Status = AcpiReadBitRegister (ACPI_BITREG_ARB_DISABLE, &Value);
    ACPI_CHECK_OK (AcpiReadBitRegister, Status);

#endif /* !ACPI_REDUCED_HARDWARE */
}

开发者ID:ryo，项目名称:netbsd-src，代码行数:44，代码来源:aeexec.c

示例6: AcpiEnableEvent

ACPI_STATUS
AcpiEnableEvent (
    UINT32                  Event,
    UINT32                  Flags)
{
    ACPI_STATUS             Status = AE_OK;
    UINT32                  Value;


    ACPI_FUNCTION_TRACE (AcpiEnableEvent);


    /* If Hardware Reduced flag is set, there are no fixed events */

    if (AcpiGbl_ReducedHardware)
    {
        return_ACPI_STATUS (AE_OK);
    }

    /* Decode the Fixed Event */

    if (Event > ACPI_EVENT_MAX)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /*
     * Enable the requested fixed event (by writing a one to the enable
     * register bit)
     */
    Status = AcpiWriteBitRegister (
        AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
        ACPI_ENABLE_EVENT);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Make sure that the hardware responded */

    Status = AcpiReadBitRegister (
        AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    if (Value != 1)
    {
        ACPI_ERROR ((AE_INFO,
            "Could not enable %s event", AcpiUtGetEventName (Event)));
        return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
    }

    return_ACPI_STATUS (Status);
}

开发者ID:Moteesh，项目名称:reactos，代码行数:56，代码来源:evxfevnt.c

示例7: acpicpu_cstate_bm_check

static bool
acpicpu_cstate_bm_check(void)
{
	uint32_t val = 0;
	ACPI_STATUS rv;

	rv = AcpiReadBitRegister(ACPI_BITREG_BUS_MASTER_STATUS, &val);

	if (ACPI_FAILURE(rv) || val == 0)
		return false;

	(void)AcpiWriteBitRegister(ACPI_BITREG_BUS_MASTER_STATUS, 1);

	return true;
}

开发者ID:eyberg，项目名称:rumpkernel-netbsd-src，代码行数:15，代码来源:acpi_cpu_cstate.c

示例8: AcpiDisableEvent

ACPI_STATUS
AcpiDisableEvent (
    UINT32                  Event,
    UINT32                  Flags)
{
    ACPI_STATUS             Status = AE_OK;
    UINT32                  Value;


    ACPI_FUNCTION_TRACE (AcpiDisableEvent);


    /* Decode the Fixed Event */

    if (Event > ACPI_EVENT_MAX)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /*
     * Disable the requested fixed event (by writing a zero to the enable
     * register bit)
     */
    Status = AcpiWriteBitRegister (
                AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
                ACPI_DISABLE_EVENT);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    Status = AcpiReadBitRegister (
                AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    if (Value != 0)
    {
        ACPI_ERROR ((AE_INFO,
            "Could not disable %s events", AcpiUtGetEventName (Event)));
        return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
    }

    return_ACPI_STATUS (Status);
}

开发者ID:zenny，项目名称:DragonFlyBSD，代码行数:47，代码来源:evxfevnt.c

示例9: AcpiEnterSleepState


//.........这里部分代码省略.........
    Arg.Type = ACPI_TYPE_INTEGER;
    Arg.Integer.Value = SleepState;

    Status = AcpiEvaluateObject (NULL, METHOD_NAME__GTS, &ArgList, NULL);
    if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
    {
        return_ACPI_STATUS (Status);
    }

    /* Get current value of PM1A control */

    Status = AcpiHwRegisterRead (ACPI_REGISTER_PM1_CONTROL,
                &Pm1aControl);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
    ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
        "Entering sleep state [S%d]\n", SleepState));

    /* Clear the SLP_EN and SLP_TYP fields */

    Pm1aControl &= ~(SleepTypeRegInfo->AccessBitMask |
                     SleepEnableRegInfo->AccessBitMask);
    Pm1bControl = Pm1aControl;

    /* Insert the SLP_TYP bits */

    Pm1aControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition);
    Pm1bControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition);

    /*
     * We split the writes of SLP_TYP and SLP_EN to workaround
     * poorly implemented hardware.
     */

    /* Write #1: write the SLP_TYP data to the PM1 Control registers */

    Status = AcpiHwWritePm1Control (Pm1aControl, Pm1bControl);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Insert the sleep enable (SLP_EN) bit */

    Pm1aControl |= SleepEnableRegInfo->AccessBitMask;
    Pm1bControl |= SleepEnableRegInfo->AccessBitMask;

    /* Flush caches, as per ACPI specification */

    ACPI_FLUSH_CPU_CACHE ();

    /* Write #2: Write both SLP_TYP + SLP_EN */

    Status = AcpiHwWritePm1Control (Pm1aControl, Pm1bControl);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    if (SleepState > ACPI_STATE_S3)
    {
        /*
         * We wanted to sleep > S3, but it didn't happen (by virtue of the
         * fact that we are still executing!)
         *
         * Wait ten seconds, then try again. This is to get S4/S5 to work on
         * all machines.
         *
         * We wait so long to allow chipsets that poll this reg very slowly
         * to still read the right value. Ideally, this block would go
         * away entirely.
         */
        AcpiOsStall (10000000);

        Status = AcpiHwRegisterWrite (ACPI_REGISTER_PM1_CONTROL,
                    SleepEnableRegInfo->AccessBitMask);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    /* Wait until we enter sleep state */

    do
    {
        Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }

        /* Spin until we wake */

    } while (!InValue);

    return_ACPI_STATUS (AE_OK);
}

开发者ID:CoryXie，项目名称:BarrelfishOS，代码行数:101，代码来源:hwsleep.c

示例10: acpi_cpu_quirks

static int
acpi_cpu_quirks(void)
{
    device_t acpi_dev;
    uint32_t val;

    ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);

    /*
     * Bus mastering arbitration control is needed to keep caches coherent
     * while sleeping in C3.  If it's not present but a working flush cache
     * instruction is present, flush the caches before entering C3 instead.
     * Otherwise, just disable C3 completely.
     */
    if (AcpiGbl_FADT.Pm2ControlBlock == 0 ||
	AcpiGbl_FADT.Pm2ControlLength == 0) {
	if ((AcpiGbl_FADT.Flags & ACPI_FADT_WBINVD) &&
	    (AcpiGbl_FADT.Flags & ACPI_FADT_WBINVD_FLUSH) == 0) {
	    cpu_quirks |= CPU_QUIRK_NO_BM_CTRL;
	    ACPI_DEBUG_PRINT((ACPI_DB_INFO,
		"acpi_cpu: no BM control, using flush cache method\n"));
	} else {
	    cpu_quirks |= CPU_QUIRK_NO_C3;
	    ACPI_DEBUG_PRINT((ACPI_DB_INFO,
		"acpi_cpu: no BM control, C3 not available\n"));
	}
    }

    /*
     * If we are using generic Cx mode, C3 on multiple CPUs requires using
     * the expensive flush cache instruction.
     */
    if (cpu_cx_generic && mp_ncpus > 1) {
	cpu_quirks |= CPU_QUIRK_NO_BM_CTRL;
	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
	    "acpi_cpu: SMP, using flush cache mode for C3\n"));
    }

    /* Look for various quirks of the PIIX4 part. */
    acpi_dev = pci_find_device(PCI_VENDOR_INTEL, PCI_DEVICE_82371AB_3);
    if (acpi_dev != NULL) {
	switch (pci_get_revid(acpi_dev)) {
	/*
	 * Disable C3 support for all PIIX4 chipsets.  Some of these parts
	 * do not report the BMIDE status to the BM status register and
	 * others have a livelock bug if Type-F DMA is enabled.  Linux
	 * works around the BMIDE bug by reading the BM status directly
	 * but we take the simpler approach of disabling C3 for these
	 * parts.
	 *
	 * See erratum #18 ("C3 Power State/BMIDE and Type-F DMA
	 * Livelock") from the January 2002 PIIX4 specification update.
	 * Applies to all PIIX4 models.
	 *
	 * Also, make sure that all interrupts cause a "Stop Break"
	 * event to exit from C2 state.
	 * Also, BRLD_EN_BM (ACPI_BITREG_BUS_MASTER_RLD in ACPI-speak)
	 * should be set to zero, otherwise it causes C2 to short-sleep.
	 * PIIX4 doesn't properly support C3 and bus master activity
	 * need not break out of C2.
	 */
	case PCI_REVISION_A_STEP:
	case PCI_REVISION_B_STEP:
	case PCI_REVISION_4E:
	case PCI_REVISION_4M:
	    cpu_quirks |= CPU_QUIRK_NO_C3;
	    ACPI_DEBUG_PRINT((ACPI_DB_INFO,
		"acpi_cpu: working around PIIX4 bug, disabling C3\n"));

	    val = pci_read_config(acpi_dev, PIIX4_DEVACTB_REG, 4);
	    if ((val & PIIX4_STOP_BREAK_MASK) != PIIX4_STOP_BREAK_MASK) {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
		    "acpi_cpu: PIIX4: enabling IRQs to generate Stop Break\n"));
	    	val |= PIIX4_STOP_BREAK_MASK;
		pci_write_config(acpi_dev, PIIX4_DEVACTB_REG, val, 4);
	    }
	    AcpiReadBitRegister(ACPI_BITREG_BUS_MASTER_RLD, &val);
	    if (val) {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
		    "acpi_cpu: PIIX4: reset BRLD_EN_BM\n"));
		AcpiWriteBitRegister(ACPI_BITREG_BUS_MASTER_RLD, 0);
	    }
	    break;
	default:
	    break;
	}
    }

    return (0);
}

开发者ID:DangerDexter，项目名称:FreeBSD-8.0-dyntick，代码行数:90，代码来源:acpi_cpu.c

示例11: acpi_cpu_idle

/*
 * Idle the CPU in the lowest state possible.  This function is called with
 * interrupts disabled.  Note that once it re-enables interrupts, a task
 * switch can occur so do not access shared data (i.e. the softc) after
 * interrupts are re-enabled.
 */
static void
acpi_cpu_idle()
{
    struct	acpi_cpu_softc *sc;
    struct	acpi_cx *cx_next;
    uint32_t	start_time, end_time;
    int		bm_active, cx_next_idx, i;

    /* If disabled, return immediately. */
    if (cpu_disable_idle) {
	ACPI_ENABLE_IRQS();
	return;
    }

    /*
     * Look up our CPU id to get our softc.  If it's NULL, we'll use C1
     * since there is no ACPI processor object for this CPU.  This occurs
     * for logical CPUs in the HTT case.
     */
    sc = cpu_softc[PCPU_GET(cpuid)];
    if (sc == NULL) {
	acpi_cpu_c1();
	return;
    }

    /* Find the lowest state that has small enough latency. */
    cx_next_idx = 0;
    for (i = sc->cpu_cx_lowest; i >= 0; i--) {
	if (sc->cpu_cx_states[i].trans_lat * 3 <= sc->cpu_prev_sleep) {
	    cx_next_idx = i;
	    break;
	}
    }

    /*
     * Check for bus master activity.  If there was activity, clear
     * the bit and use the lowest non-C3 state.  Note that the USB
     * driver polling for new devices keeps this bit set all the
     * time if USB is loaded.
     */
    if ((cpu_quirks & CPU_QUIRK_NO_BM_CTRL) == 0) {
	AcpiReadBitRegister(ACPI_BITREG_BUS_MASTER_STATUS, &bm_active);
	if (bm_active != 0) {
	    AcpiWriteBitRegister(ACPI_BITREG_BUS_MASTER_STATUS, 1);
	    cx_next_idx = min(cx_next_idx, sc->cpu_non_c3);
	}
    }

    /* Select the next state and update statistics. */
    cx_next = &sc->cpu_cx_states[cx_next_idx];
    sc->cpu_cx_stats[cx_next_idx]++;
    KASSERT(cx_next->type != ACPI_STATE_C0, ("acpi_cpu_idle: C0 sleep"));

    /*
     * Execute HLT (or equivalent) and wait for an interrupt.  We can't
     * calculate the time spent in C1 since the place we wake up is an
     * ISR.  Assume we slept half of quantum and return.
     */
    if (cx_next->type == ACPI_STATE_C1) {
	sc->cpu_prev_sleep = (sc->cpu_prev_sleep * 3 + 500000 / hz) / 4;
	acpi_cpu_c1();
	return;
    }

    /*
     * For C3, disable bus master arbitration and enable bus master wake
     * if BM control is available, otherwise flush the CPU cache.
     */
    if (cx_next->type == ACPI_STATE_C3) {
	if ((cpu_quirks & CPU_QUIRK_NO_BM_CTRL) == 0) {
	    AcpiWriteBitRegister(ACPI_BITREG_ARB_DISABLE, 1);
	    AcpiWriteBitRegister(ACPI_BITREG_BUS_MASTER_RLD, 1);
	} else
	    ACPI_FLUSH_CPU_CACHE();
    }

    /*
     * Read from P_LVLx to enter C2(+), checking time spent asleep.
     * Use the ACPI timer for measuring sleep time.  Since we need to
     * get the time very close to the CPU start/stop clock logic, this
     * is the only reliable time source.
     */
    AcpiRead(&start_time, &AcpiGbl_FADT.XPmTimerBlock);
    CPU_GET_REG(cx_next->p_lvlx, 1);

    /*
     * Read the end time twice.  Since it may take an arbitrary time
     * to enter the idle state, the first read may be executed before
     * the processor has stopped.  Doing it again provides enough
     * margin that we are certain to have a correct value.
     */
    AcpiRead(&end_time, &AcpiGbl_FADT.XPmTimerBlock);
    AcpiRead(&end_time, &AcpiGbl_FADT.XPmTimerBlock);

//.........这里部分代码省略.........

开发者ID:DangerDexter，项目名称:FreeBSD-8.0-dyntick，代码行数:101，代码来源:acpi_cpu.c

示例12: AcpiGetEventStatus

ACPI_STATUS
AcpiGetEventStatus (
    UINT32                  Event,
    ACPI_EVENT_STATUS       *EventStatus)
{
    ACPI_STATUS             Status;
    ACPI_EVENT_STATUS       LocalEventStatus = 0;
    UINT32                  InByte;


    ACPI_FUNCTION_TRACE (AcpiGetEventStatus);


    if (!EventStatus)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Decode the Fixed Event */

    if (Event > ACPI_EVENT_MAX)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Fixed event currently can be dispatched? */

    if (AcpiGbl_FixedEventHandlers[Event].Handler)
    {
        LocalEventStatus |= ACPI_EVENT_FLAG_HAS_HANDLER;
    }

    /* Fixed event currently enabled? */

    Status = AcpiReadBitRegister (
        AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &InByte);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    if (InByte)
    {
        LocalEventStatus |=
            (ACPI_EVENT_FLAG_ENABLED | ACPI_EVENT_FLAG_ENABLE_SET);
    }

    /* Fixed event currently active? */

    Status = AcpiReadBitRegister (
        AcpiGbl_FixedEventInfo[Event].StatusRegisterId, &InByte);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    if (InByte)
    {
        LocalEventStatus |= ACPI_EVENT_FLAG_STATUS_SET;
    }

    (*EventStatus) = LocalEventStatus;
    return_ACPI_STATUS (AE_OK);
}

开发者ID:Moteesh，项目名称:reactos，代码行数:64，代码来源:evxfevnt.c

示例13: read_bit_register

status_t
read_bit_register(uint32 regid, uint32 *val)
{
    return AcpiReadBitRegister(regid, (UINT32 *)val);
}

开发者ID:simonsouth，项目名称:haiku，代码行数:5，代码来源:BusManager.cpp

示例14: acpi_cst_idle

/*
 * Idle the CPU in the lowest state possible.  This function is called with
 * interrupts disabled.  Note that once it re-enables interrupts, a task
 * switch can occur so do not access shared data (i.e. the softc) after
 * interrupts are re-enabled.
 */
static void
acpi_cst_idle(void)
{
    struct	acpi_cst_softc *sc;
    struct	acpi_cst_cx *cx_next;
    union microtime_pcpu start, end;
    int		cx_next_idx, i, tdiff, bm_arb_disabled = 0;

    /* If disabled, return immediately. */
    if (acpi_cst_disable_idle) {
	ACPI_ENABLE_IRQS();
	return;
    }

    /*
     * Look up our CPU id to get our softc.  If it's NULL, we'll use C1
     * since there is no Cx state for this processor.
     */
    sc = acpi_cst_softc[mdcpu->mi.gd_cpuid];
    if (sc == NULL) {
	acpi_cst_c1_halt();
	return;
    }

    /* Still probing; use C1 */
    if (sc->cst_flags & ACPI_CST_FLAG_PROBING) {
	acpi_cst_c1_halt();
	return;
    }

    /* Find the lowest state that has small enough latency. */
    cx_next_idx = 0;
    for (i = sc->cst_cx_lowest; i >= 0; i--) {
	if (sc->cst_cx_states[i].trans_lat * 3 <= sc->cst_prev_sleep) {
	    cx_next_idx = i;
	    break;
	}
    }

    /*
     * Check for bus master activity if needed for the selected state.
     * If there was activity, clear the bit and use the lowest non-C3 state.
     */
    cx_next = &sc->cst_cx_states[cx_next_idx];
    if (cx_next->flags & ACPI_CST_CX_FLAG_BM_STS) {
	int bm_active;

	AcpiReadBitRegister(ACPI_BITREG_BUS_MASTER_STATUS, &bm_active);
	if (bm_active != 0) {
	    AcpiWriteBitRegister(ACPI_BITREG_BUS_MASTER_STATUS, 1);
	    cx_next_idx = sc->cst_non_c3;
	}
    }

    /* Select the next state and update statistics. */
    cx_next = &sc->cst_cx_states[cx_next_idx];
    sc->cst_cx_stats[cx_next_idx]++;
    KASSERT(cx_next->type != ACPI_STATE_C0, ("C0 sleep"));

    /*
     * Execute HLT (or equivalent) and wait for an interrupt.  We can't
     * calculate the time spent in C1 since the place we wake up is an
     * ISR.  Assume we slept half of quantum and return.
     */
    if (cx_next->type == ACPI_STATE_C1) {
	sc->cst_prev_sleep = (sc->cst_prev_sleep * 3 + 500000 / hz) / 4;
	cx_next->enter(cx_next);
	return;
    }

    /* Execute the proper preamble before enter the selected state. */
    if (cx_next->preamble == ACPI_CST_CX_PREAMBLE_BM_ARB) {
	AcpiWriteBitRegister(ACPI_BITREG_ARB_DISABLE, 1);
	bm_arb_disabled = 1;
    } else if (cx_next->preamble == ACPI_CST_CX_PREAMBLE_WBINVD) {
	ACPI_FLUSH_CPU_CACHE();
    }

    /*
     * Enter the selected state and check time spent asleep.
     */
    microtime_pcpu_get(&start);
    cpu_mfence();

    cx_next->enter(cx_next);

    cpu_mfence();
    microtime_pcpu_get(&end);

    /* Enable bus master arbitration, if it was disabled. */
    if (bm_arb_disabled)
	AcpiWriteBitRegister(ACPI_BITREG_ARB_DISABLE, 0);

    ACPI_ENABLE_IRQS();
//.........这里部分代码省略.........

开发者ID:wan721，项目名称:DragonFlyBSD，代码行数:101，代码来源:acpi_cpu_cstate.c

注：本文中的AcpiReadBitRegister函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

鲜花

握手

雷人

路过

鸡蛋

该文章已有0人参与评论

请发表评论

全部评论

专题导读

More+

10-27 六六分期app的软件客服如何联系？(六六分期

11-06 可心卡盟:win10系统火狐flash插件崩溃怎么

11-06 亲亲特价:怎么删除回收站图标

11-06 济南大学虚拟社区:鲁大师节能降温的具体办

11-06 xlueops.exe:无线网络安装向导

11-06 女斗合众国:win7系统cf与主机连接不稳定怎

11-06 0xc000022-[cf烟雾头]cf怎么调烟雾头

11-06 qizideyouhuo:应用程序无法正常启动0xc0000

11-06 ipz-185:win7系统vcf文件怎么打开

11-06 傻哥蹦迪:win10系统s4怎么打开usb调试

11-06 八神浩树gtaste:回收站清空了怎么恢复

11-06 妖尾之黑色守护:win10系统电脑没有1440x900

11-06 校园至尊魔王小说:win7系统浏览网页时字体

11-06 女斗合众国:win10系统访问共享文件夹提示请

11-06 tokyo hot n0654:恢复win7系统默认字体一招

11-06 雨酷仙境:设置win7系统转移临时文件夹腾出

11-06 阿穆纳伊之杖:win7系统开始菜单在右边还原

11-06 tunespotting:win10系统火狐flash插件总是

11-06 甘尔葛分析师：计谋网站seo关键词暴涨有什

11-06 蔡贵霖: 计谋网站seo关键词暴涨有什么秘密

11-06 博益网首页:ao3网页版进入不了解决方法

11-06 漏斗子专栏: 网站数据分析小白易懂精华篇

11-06 见证双虹怎么做:win7系统开启telnet命令的

11-06 颾狐蝶蜋:系统资源不足无法完成请求的服务

11-06 国光中学校歌:提交网站到alexa查询详细步骤

11-06 西安有情天:静态网页和动态网页的区别

11-06 红木雅尚斋:外部链接构造对网站的好处

11-06 前官礼遇：防止域名劫持–增强域安全性的10

11-06 密传二转答案: 中文分词算法有哪些

11-06 金泉家园邮编:百度快照劫持的表现及应对方

C++ AcpiTbChecksum函数代码示例发布时间：2022-05-30

C++ AcpiPsParseAml函数代码示例发布时间：2022-05-30

剪的笔顺,诠释剪的笔画,认识剪的部首

1 六六分期app的软件客服如何联系？(六六分期

六六分期app的软件客服如何联系？不知道吗？加qq群【895510560】即可！标题：六六分期

阅读：19134|2023-10-27

2 可心卡盟:win10系统火狐flash插件崩溃怎么

今天小编告诉大家如何处理win10系统火狐flash插件总是崩溃的问题，可能很多用户都不知

阅读：9973|2022-11-06

3 亲亲特价:怎么删除回收站图标

今天小编告诉大家如何对win10系统删除桌面回收站图标进行设置，可能很多用户都不知道

阅读：8317|2022-11-06

4 济南大学虚拟社区:鲁大师节能降温的具体办

今天小编告诉大家如何对win10系统电脑设置节能降温的设置方法，想必大家都遇到过需要

阅读：8686|2022-11-06

5 xlueops.exe:无线网络安装向导

我们在使用xp系统的过程中,经常需要对xp系统无线网络安装向导设置进行设置，可能很多

阅读：8627|2022-11-06

6 女斗合众国:win7系统cf与主机连接不稳定怎

今天小编告诉大家如何处理win7系统玩cf老是与主机连接不稳定的问题，可能很多用户都不

阅读：9643|2022-11-06

7 0xc000022-[cf烟雾头]cf怎么调烟雾头

电脑对日常生活的重要性小编就不多说了，可是一旦碰到win7系统设置cf烟雾头的问题，很

阅读：8611|2022-11-06

8 qizideyouhuo:应用程序无法正常启动0xc0000

我们在日常使用电脑的时候，有的小伙伴们可能在打开应用的时候会遇见提示应用程序无法

阅读：7991|2022-11-06

9 ipz-185:win7系统vcf文件怎么打开

今天小编告诉大家如何对win7系统打开vcf文件进行设置，可能很多用户都不知道怎么对win

阅读：8642|2022-11-06

10 傻哥蹦迪:win10系统s4怎么打开usb调试

今天小编告诉大家如何对win10系统s4开启USB调试模式进行设置，可能很多用户都不知道怎

阅读：7527|2022-11-06

客服电话

电子邮件

C++ AcpiReadBitRegister函数代码示例

示例1: AeHardwareInterfaces

示例2: AcpiGetEventStatus

示例3: AcpiHwGetMode

示例4: AcpiEnterSleepStateS4bios

示例5: AeHardwareInterfaces

示例6: AcpiEnableEvent

示例7: acpicpu_cstate_bm_check

示例8: AcpiDisableEvent

示例9: AcpiEnterSleepState

示例10: acpi_cpu_quirks

示例11: acpi_cpu_idle

示例12: AcpiGetEventStatus

示例13: read_bit_register

示例14: acpi_cst_idle

请发表评论

全部评论

上一篇：

下一篇：

dphi-official/Machine_Learning_Bootcamp

win7系统注册表编辑器打开的操作方法

PrismarineJS/prismarine-physics: Provide

微信小程序生成小程序码

MATPOWER/matpower: MATPOWER – steady st

剪的笔顺,诠释剪的笔画,认识剪的部首

六六分期app的软件客服如何联系？(六六分期

florent37/ViewAnimator: A fluent Android

florent37/Shrine-MaterialDesign2: implem

CVE-2020-36276

SimpleSoftwareIO/simple-sms: Send and re

关于我们

产品与服务

解决方案

139-2527-9053

客服电话

电子邮件

C++ AcpiReadBitRegister函数代码示例

示例1: AeHardwareInterfaces

示例2: AcpiGetEventStatus

示例3: AcpiHwGetMode

示例4: AcpiEnterSleepStateS4bios

示例5: AeHardwareInterfaces

示例6: AcpiEnableEvent

示例7: acpicpu_cstate_bm_check

示例8: AcpiDisableEvent

示例9: AcpiEnterSleepState

示例10: acpi_cpu_quirks

示例11: acpi_cpu_idle

示例12: AcpiGetEventStatus

示例13: read_bit_register

示例14: acpi_cst_idle

请发表评论

全部评论

上一篇：

下一篇：

dphi-official/Machine_Learning_Bootcamp

win7系统注册表编辑器打开的操作方法

PrismarineJS/prismarine-physics: Provide

微信小程序 生成小程序码

MATPOWER/matpower: MATPOWER – steady st

剪的笔顺,诠释剪的笔画,认识剪的部首

六六分期app的软件客服如何联系？(六六分期

florent37/ViewAnimator: A fluent Android

florent37/Shrine-MaterialDesign2: implem

CVE-2020-36276

SimpleSoftwareIO/simple-sms: Send and re

关于我们

产品与服务

解决方案

139-2527-9053

微信小程序生成小程序码