Beispiel #1
0
ACPI_STATUS
AcpiEnableSubsystem (
    UINT32                  Flags)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (AcpiEnableSubsystem);


#if (!ACPI_REDUCED_HARDWARE)

    /* Enable ACPI mode */

    if (!(Flags & ACPI_NO_ACPI_ENABLE))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));

        AcpiGbl_OriginalMode = AcpiHwGetMode();

        Status = AcpiEnable ();
        if (ACPI_FAILURE (Status))
        {
            ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
            return_ACPI_STATUS (Status);
        }
    }

    /*
     * Obtain a permanent mapping for the FACS. This is required for the
     * Global Lock and the Firmware Waking Vector
     */
    Status = AcpiTbInitializeFacs ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
        return_ACPI_STATUS (Status);
    }

#endif /* !ACPI_REDUCED_HARDWARE */

    /*
     * Install the default OpRegion handlers. These are installed unless
     * other handlers have already been installed via the
     * InstallAddressSpaceHandler interface.
     */
    if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "[Init] Installing default address space handlers\n"));

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

#if (!ACPI_REDUCED_HARDWARE)
    /*
     * Initialize ACPI Event handling (Fixed and General Purpose)
     *
     * Note1: We must have the hardware and events initialized before we can
     * execute any control methods safely. Any control method can require
     * ACPI hardware support, so the hardware must be fully initialized before
     * any method execution!
     *
     * Note2: Fixed events are initialized and enabled here. GPEs are
     * initialized, but cannot be enabled until after the hardware is
     * completely initialized (SCI and GlobalLock activated) and the various
     * initialization control methods are run (_REG, _STA, _INI) on the
     * entire namespace.
     */
    if (!(Flags & ACPI_NO_EVENT_INIT))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "[Init] Initializing ACPI events\n"));

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

    /*
     * Install the SCI handler and Global Lock handler. This completes the
     * hardware initialization.
     */
    if (!(Flags & ACPI_NO_HANDLER_INIT))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "[Init] Installing SCI/GL handlers\n"));

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

#endif /* !ACPI_REDUCED_HARDWARE */

    return_ACPI_STATUS (Status);
}
Beispiel #2
0
ACPI_STATUS
AcpiEnableSubsystem (
    UINT32                  Flags)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (AcpiEnableSubsystem);


    /*
     * The early initialization phase is complete. The namespace is loaded,
     * and we can now support address spaces other than Memory, I/O, and
     * PCI_Config.
     */
    AcpiGbl_EarlyInitialization = FALSE;

    /*
     * Install the default operation region handlers. These are the
     * handlers that are defined by the ACPI specification to be
     * "always accessible" -- namely, SystemMemory, SystemIO, and
     * PCI_Config. This also means that no _REG methods need to be
     * run for these address spaces. We need to have these handlers
     * installed before any AML code can be executed, especially any
     * module-level code (11/2015).
     */
    if (!AcpiGbl_GroupModuleLevelCode)
    {
        Status = AcpiEvInstallRegionHandlers ();
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status, "During Region initialization"));
            return_ACPI_STATUS (Status);
        }
    }

#if (!ACPI_REDUCED_HARDWARE)

    /* Enable ACPI mode */

    if (!(Flags & ACPI_NO_ACPI_ENABLE))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));

        AcpiGbl_OriginalMode = AcpiHwGetMode();

        Status = AcpiEnable ();
        if (ACPI_FAILURE (Status))
        {
            ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
            return_ACPI_STATUS (Status);
        }
    }

    /*
     * Obtain a permanent mapping for the FACS. This is required for the
     * Global Lock and the Firmware Waking Vector
     */
    if (!(Flags & ACPI_NO_FACS_INIT))
    {
        Status = AcpiTbInitializeFacs ();
        if (ACPI_FAILURE (Status))
        {
            ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
            return_ACPI_STATUS (Status);
        }
    }

    /*
     * Initialize ACPI Event handling (Fixed and General Purpose)
     *
     * Note1: We must have the hardware and events initialized before we can
     * execute any control methods safely. Any control method can require
     * ACPI hardware support, so the hardware must be fully initialized before
     * any method execution!
     *
     * Note2: Fixed events are initialized and enabled here. GPEs are
     * initialized, but cannot be enabled until after the hardware is
     * completely initialized (SCI and GlobalLock activated) and the various
     * initialization control methods are run (_REG, _STA, _INI) on the
     * entire namespace.
     */
    if (!(Flags & ACPI_NO_EVENT_INIT))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "[Init] Initializing ACPI events\n"));

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

    /*
     * Install the SCI handler and Global Lock handler. This completes the
     * hardware initialization.
     */
    if (!(Flags & ACPI_NO_HANDLER_INIT))
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "[Init] Installing SCI/GL handlers\n"));

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

#endif /* !ACPI_REDUCED_HARDWARE */

    return_ACPI_STATUS (Status);
}