ACPI_STATUS
AcpiEnterSleepStatePrep (
    UINT8                   SleepState)
{
    ACPI_STATUS             Status;
    ACPI_OBJECT_LIST        ArgList;
    ACPI_OBJECT             Arg;


    ACPI_FUNCTION_TRACE (AcpiEnterSleepStatePrep);


    /* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */

    Status = AcpiGetSleepTypeData (SleepState,
                    &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Execute the _PTS method (Prepare To Sleep) */

    ArgList.Count = 1;
    ArgList.Pointer = &Arg;
    Arg.Type = ACPI_TYPE_INTEGER;
    Arg.Integer.Value = SleepState;

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

    /* Setup the argument to the _SST method (System STatus) */

    switch (SleepState)
    {
    case ACPI_STATE_S0:
        Arg.Integer.Value = ACPI_SST_WORKING;
        break;

    case ACPI_STATE_S1:
    case ACPI_STATE_S2:
    case ACPI_STATE_S3:
        Arg.Integer.Value = ACPI_SST_SLEEPING;
        break;

    case ACPI_STATE_S4:
        Arg.Integer.Value = ACPI_SST_SLEEP_CONTEXT;
        break;

    default:
        Arg.Integer.Value = ACPI_SST_INDICATOR_OFF; /* Default is off */
        break;
    }

    /*
     * Set the system indicators to show the desired sleep state.
     * _SST is an optional method (return no error if not found)
     */
    Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
    if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "While executing method _SST"));
    }

    return_ACPI_STATUS (AE_OK);
}
Esempio n. 2
0
ACPI_STATUS
AcpiDsInitializeObjects (
    UINT32                  TableIndex,
    ACPI_NAMESPACE_NODE     *StartNode)
{
    ACPI_STATUS             Status;
    ACPI_INIT_WALK_INFO     Info;
    ACPI_TABLE_HEADER       *Table;
    ACPI_OWNER_ID           OwnerId;


    ACPI_FUNCTION_TRACE (DsInitializeObjects);


    Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
        "**** Starting initialization of namespace objects ****\n"));
    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));

    /* Set all init info to zero */

    ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));

    Info.OwnerId = OwnerId;
    Info.TableIndex = TableIndex;

    /* Walk entire namespace from the supplied root */

    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /*
     * We don't use AcpiWalkNamespace since we do not want to acquire
     * the namespace reader lock.
     */
    Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX,
                ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL);
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
    }
    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);

    Status = AcpiGetTableByIndex (TableIndex, &Table);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
        "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n",
        Table->Signature, OwnerId, Info.ObjectCount,
        Info.DeviceCount, Info.MethodCount, Info.OpRegionCount));

    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
        "%u Methods, %u Regions\n", Info.MethodCount, Info.OpRegionCount));

    return_ACPI_STATUS (AE_OK);
}
Esempio n. 3
0
ACPI_STATUS
AcpiEvInitializeGpeBlock (
    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
    ACPI_GPE_BLOCK_INFO     *GpeBlock,
    void                    *Ignored)
{
    ACPI_STATUS             Status;
    ACPI_GPE_EVENT_INFO     *GpeEventInfo;
    UINT32                  GpeEnabledCount;
    UINT32                  GpeIndex;
    UINT32                  i;
    UINT32                  j;


    ACPI_FUNCTION_TRACE (EvInitializeGpeBlock);


    /*
     * Ignore a null GPE block (e.g., if no GPE block 1 exists), and
     * any GPE blocks that have been initialized already.
     */
    if (!GpeBlock || GpeBlock->Initialized)
    {
        return_ACPI_STATUS (AE_OK);
    }

    /*
     * Enable all GPEs that have a corresponding method and have the
     * ACPI_GPE_CAN_WAKE flag unset. Any other GPEs within this block
     * must be enabled via the acpi_enable_gpe() interface.
     */
    GpeEnabledCount = 0;

    for (i = 0; i < GpeBlock->RegisterCount; i++)
    {
        for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
        {
            /* Get the info block for this particular GPE */

            GpeIndex = (i * ACPI_GPE_REGISTER_WIDTH) + j;
            GpeEventInfo = &GpeBlock->EventInfo[GpeIndex];

            /*
             * Ignore GPEs that have no corresponding _Lxx/_Exx method
             * and GPEs that are used to wake the system
             */
            if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_NONE) ||
                (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_HANDLER) ||
                (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_RAW_HANDLER) ||
                (GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE))
            {
                continue;
            }

            Status = AcpiEvAddGpeReference (GpeEventInfo);
            if (ACPI_FAILURE (Status))
            {
                ACPI_EXCEPTION ((AE_INFO, Status,
                    "Could not enable GPE 0x%02X",
                    GpeIndex + GpeBlock->BlockBaseNumber));
                continue;
            }

            GpeEnabledCount++;
        }
    }

    if (GpeEnabledCount)
    {
        ACPI_INFO ((AE_INFO,
            "Enabled %u GPEs in block %02X to %02X", GpeEnabledCount,
            (UINT32) GpeBlock->BlockBaseNumber,
            (UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1))));
    }

    GpeBlock->Initialized = TRUE;
    return_ACPI_STATUS (AE_OK);
}
Esempio n. 4
0
static ACPI_STATUS
AcpiDbExecuteMethod (
    ACPI_DB_METHOD_INFO     *Info,
    ACPI_BUFFER             *ReturnObj)
{
    ACPI_STATUS             Status;
    ACPI_OBJECT_LIST        ParamObjects;
    ACPI_OBJECT             Params[ACPI_DEBUGGER_MAX_ARGS + 1];
    UINT32                  i;


    ACPI_FUNCTION_TRACE (DbExecuteMethod);


    if (AcpiGbl_DbOutputToFile && !AcpiDbgLevel)
    {
        AcpiOsPrintf ("Warning: debug output is not enabled!\n");
    }

    ParamObjects.Count = 0;
    ParamObjects.Pointer = NULL;

    /* Pass through any command-line arguments */

    if (Info->Args && Info->Args[0])
    {
        /* Get arguments passed on the command line */

        for (i = 0; (Info->Args[i] && *(Info->Args[i])); i++)
        {
            /* Convert input string (token) to an actual ACPI_OBJECT */

            Status = AcpiDbConvertToObject (Info->Types[i],
                Info->Args[i], &Params[i]);
            if (ACPI_FAILURE (Status))
            {
                ACPI_EXCEPTION ((AE_INFO, Status,
                    "While parsing method arguments"));
                goto Cleanup;
            }
        }

        ParamObjects.Count = i;
        ParamObjects.Pointer = Params;
    }

    /* Prepare for a return object of arbitrary size */

    ReturnObj->Pointer = AcpiGbl_DbBuffer;
    ReturnObj->Length  = ACPI_DEBUG_BUFFER_SIZE;

    /* Do the actual method execution */

    AcpiGbl_MethodExecuting = TRUE;
    Status = AcpiEvaluateObject (NULL, Info->Pathname,
        &ParamObjects, ReturnObj);

    AcpiGbl_CmSingleStep = FALSE;
    AcpiGbl_MethodExecuting = FALSE;

    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status,
            "while executing %s from debugger", Info->Pathname));

        if (Status == AE_BUFFER_OVERFLOW)
        {
            ACPI_ERROR ((AE_INFO,
                "Possible overflow of internal debugger "
                "buffer (size 0x%X needed 0x%X)",
                ACPI_DEBUG_BUFFER_SIZE, (UINT32) ReturnObj->Length));
        }
    }

Cleanup:
    AcpiDbDeleteObjects (ParamObjects.Count, Params);
    return_ACPI_STATUS (Status);
}
Esempio n. 5
0
ACPI_STATUS
AcpiDsGetPredicateValue (
    ACPI_WALK_STATE         *WalkState,
    ACPI_OPERAND_OBJECT     *ResultObj)
{
    ACPI_STATUS             Status = AE_OK;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *LocalObjDesc = NULL;


    ACPI_FUNCTION_TRACE_PTR (DsGetPredicateValue, WalkState);


    WalkState->ControlState->Common.State = 0;

    if (ResultObj)
    {
        Status = AcpiDsResultPop (&ObjDesc, WalkState);
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status,
                "Could not get result from predicate evaluation"));

            return_ACPI_STATUS (Status);
        }
    }
    else
    {
        Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }

        Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }

        ObjDesc = WalkState->Operands [0];
    }

    if (!ObjDesc)
    {
        ACPI_ERROR ((AE_INFO,
            "No predicate ObjDesc=%p State=%p",
            ObjDesc, WalkState));

        return_ACPI_STATUS (AE_AML_NO_OPERAND);
    }

    /*
     * Result of predicate evaluation must be an Integer
     * object. Implicitly convert the argument if necessary.
     */
    Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc, 16);
    if (ACPI_FAILURE (Status))
    {
        goto Cleanup;
    }

    if (LocalObjDesc->Common.Type != ACPI_TYPE_INTEGER)
    {
        ACPI_ERROR ((AE_INFO,
            "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X",
            ObjDesc, WalkState, ObjDesc->Common.Type));

        Status = AE_AML_OPERAND_TYPE;
        goto Cleanup;
    }

    /* Truncate the predicate to 32-bits if necessary */

    AcpiExTruncateFor32bitTable (LocalObjDesc);

    /*
     * Save the result of the predicate evaluation on
     * the control stack
     */
    if (LocalObjDesc->Integer.Value)
    {
        WalkState->ControlState->Common.Value = TRUE;
    }
    else
    {
        /*
         * Predicate is FALSE, we will just toss the
         * rest of the package
         */
        WalkState->ControlState->Common.Value = FALSE;
        Status = AE_CTRL_FALSE;
    }

    /* Predicate can be used for an implicit return value */

    (void) AcpiDsDoImplicitReturn (LocalObjDesc, WalkState, TRUE);


Cleanup:

    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n",
        WalkState->ControlState->Common.Value, WalkState->Op));

     /* Break to debugger to display result */

    ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (LocalObjDesc, WalkState));

    /*
     * Delete the predicate result object (we know that
     * we don't need it anymore)
     */
    if (LocalObjDesc != ObjDesc)
    {
        AcpiUtRemoveReference (LocalObjDesc);
    }
    AcpiUtRemoveReference (ObjDesc);

    WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL;
    return_ACPI_STATUS (Status);
}
Esempio n. 6
0
/*******************************************************************************
 *
 * FUNCTION:    acpi_ev_gpe_initialize
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Initialize the GPE data structures and the FADT GPE 0/1 blocks
 *
 ******************************************************************************/
acpi_status acpi_ev_gpe_initialize(void)
{
	u32 register_count0 = 0;
	u32 register_count1 = 0;
	u32 gpe_number_max = 0;
	acpi_status status;

	ACPI_FUNCTION_TRACE(ev_gpe_initialize);

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Initialize the GPE Block(s) defined in the FADT
	 *
	 * Why the GPE register block lengths are divided by 2:  From the ACPI
	 * Spec, section "General-Purpose Event Registers", we have:
	 *
	 * "Each register block contains two registers of equal length
	 *  GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
	 *  GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
	 *  The length of the GPE1_STS and GPE1_EN registers is equal to
	 *  half the GPE1_LEN. If a generic register block is not supported
	 *  then its respective block pointer and block length values in the
	 *  FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
	 *  to be the same size."
	 */

	/*
	 * Determine the maximum GPE number for this machine.
	 *
	 * Note: both GPE0 and GPE1 are optional, and either can exist without
	 * the other.
	 *
	 * If EITHER the register length OR the block address are zero, then that
	 * particular block is not supported.
	 */
	if (acpi_gbl_FADT.gpe0_block_length &&
	    acpi_gbl_FADT.xgpe0_block.address) {

		/* GPE block 0 exists (has both length and address > 0) */

		register_count0 = (u16)(acpi_gbl_FADT.gpe0_block_length / 2);

		gpe_number_max =
		    (register_count0 * ACPI_GPE_REGISTER_WIDTH) - 1;

		/* Install GPE Block 0 */

		status = acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
						  &acpi_gbl_FADT.xgpe0_block,
						  register_count0, 0,
						  acpi_gbl_FADT.sci_interrupt,
						  &acpi_gbl_gpe_fadt_blocks[0]);

		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Could not create GPE Block 0"));
		}
	}

	if (acpi_gbl_FADT.gpe1_block_length &&
	    acpi_gbl_FADT.xgpe1_block.address) {

		/* GPE block 1 exists (has both length and address > 0) */

		register_count1 = (u16)(acpi_gbl_FADT.gpe1_block_length / 2);

		/* Check for GPE0/GPE1 overlap (if both banks exist) */

		if ((register_count0) &&
		    (gpe_number_max >= acpi_gbl_FADT.gpe1_base)) {
			ACPI_ERROR((AE_INFO,
				    "GPE0 block (GPE 0 to %u) overlaps the GPE1 block "
				    "(GPE %u to %u) - Ignoring GPE1",
				    gpe_number_max, acpi_gbl_FADT.gpe1_base,
				    acpi_gbl_FADT.gpe1_base +
				    ((register_count1 *
				      ACPI_GPE_REGISTER_WIDTH) - 1)));

			/* Ignore GPE1 block by setting the register count to zero */

			register_count1 = 0;
		} else {
			/* Install GPE Block 1 */

			status =
			    acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
						     &acpi_gbl_FADT.xgpe1_block,
						     register_count1,
						     acpi_gbl_FADT.gpe1_base,
						     acpi_gbl_FADT.
						     sci_interrupt,
						     &acpi_gbl_gpe_fadt_blocks
						     [1]);

			if (ACPI_FAILURE(status)) {
				ACPI_EXCEPTION((AE_INFO, status,
						"Could not create GPE Block 1"));
			}

			/*
			 * GPE0 and GPE1 do not have to be contiguous in the GPE number
			 * space. However, GPE0 always starts at GPE number zero.
			 */
			gpe_number_max = acpi_gbl_FADT.gpe1_base +
			    ((register_count1 * ACPI_GPE_REGISTER_WIDTH) - 1);
		}
	}

	/* Exit if there are no GPE registers */

	if ((register_count0 + register_count1) == 0) {

		/* GPEs are not required by ACPI, this is OK */

		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
				  "There are no GPE blocks defined in the FADT\n"));
		status = AE_OK;
		goto cleanup;
	}

	/* Check for Max GPE number out-of-range */

	if (gpe_number_max > ACPI_GPE_MAX) {
		ACPI_ERROR((AE_INFO,
			    "Maximum GPE number from FADT is too large: 0x%X",
			    gpe_number_max));
		status = AE_BAD_VALUE;
		goto cleanup;
	}

      cleanup:
	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
	return_ACPI_STATUS(AE_OK);
}
Esempio n. 7
0
void
AcpiEvDetachRegion (
    ACPI_OPERAND_OBJECT     *RegionObj,
    BOOLEAN                 AcpiNsIsLocked)
{
    ACPI_OPERAND_OBJECT     *HandlerObj;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *StartDesc;
    ACPI_OPERAND_OBJECT     **LastObjPtr;
    ACPI_ADR_SPACE_SETUP    RegionSetup;
    void                    **RegionContext;
    ACPI_OPERAND_OBJECT     *RegionObj2;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (EvDetachRegion);


    RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
    if (!RegionObj2)
    {
        return_VOID;
    }
    RegionContext = &RegionObj2->Extra.RegionContext;

    /* Get the address handler from the region object */

    HandlerObj = RegionObj->Region.Handler;
    if (!HandlerObj)
    {
        /* This region has no handler, all done */

        return_VOID;
    }

    /* Find this region in the handler's list */

    ObjDesc = HandlerObj->AddressSpace.RegionList;
    StartDesc = ObjDesc;
    LastObjPtr = &HandlerObj->AddressSpace.RegionList;

    while (ObjDesc)
    {
        /* Is this the correct Region? */

        if (ObjDesc == RegionObj)
        {
            ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
                "Removing Region %p from address handler %p\n",
                RegionObj, HandlerObj));

            /* This is it, remove it from the handler's list */

            *LastObjPtr = ObjDesc->Region.Next;
            ObjDesc->Region.Next = NULL;        /* Must clear field */

            if (AcpiNsIsLocked)
            {
                Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
                if (ACPI_FAILURE (Status))
                {
                    return_VOID;
                }
            }

            /* Now stop region accesses by executing the _REG method */

            Status = AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_DISCONNECT);
            if (ACPI_FAILURE (Status))
            {
                ACPI_EXCEPTION ((AE_INFO, Status, "from region _REG, [%s]",
                    AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
            }

            if (AcpiNsIsLocked)
            {
                Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
                if (ACPI_FAILURE (Status))
                {
                    return_VOID;
                }
            }

            /*
             * If the region has been activated, call the setup handler with
             * the deactivate notification
             */
            if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
            {
                RegionSetup = HandlerObj->AddressSpace.Setup;
                Status = RegionSetup (RegionObj, ACPI_REGION_DEACTIVATE,
                    HandlerObj->AddressSpace.Context, RegionContext);

                /*
                 * RegionContext should have been released by the deactivate
                 * operation. We don't need access to it anymore here.
                 */
                if (RegionContext)
                {
                    *RegionContext = NULL;
                }

                /* Init routine may fail, Just ignore errors */

                if (ACPI_FAILURE (Status))
                {
                    ACPI_EXCEPTION ((AE_INFO, Status,
                        "from region handler - deactivate, [%s]",
                        AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
                }

                RegionObj->Region.Flags &= ~(AOPOBJ_SETUP_COMPLETE);
            }

            /*
             * Remove handler reference in the region
             *
             * NOTE: this doesn't mean that the region goes away, the region
             * is just inaccessible as indicated to the _REG method
             *
             * If the region is on the handler's list, this must be the
             * region's handler
             */
            RegionObj->Region.Handler = NULL;
            AcpiUtRemoveReference (HandlerObj);

            return_VOID;
        }

        /* Walk the linked list of handlers */

        LastObjPtr = &ObjDesc->Region.Next;
        ObjDesc = ObjDesc->Region.Next;

        /* Prevent infinite loop if list is corrupted */

        if (ObjDesc == StartDesc)
        {
            ACPI_ERROR ((AE_INFO,
                "Circular handler list in region object %p",
                RegionObj));
            return_VOID;
        }
    }

    /* If we get here, the region was not in the handler's region list */

    ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
        "Cannot remove region %p from address handler %p\n",
        RegionObj, HandlerObj));

    return_VOID;
}
Esempio n. 8
0
acpi_status
acpi_ds_initialize_objects(u32 table_index,
			   struct acpi_namespace_node * start_node)
{
	acpi_status status;
	struct acpi_init_walk_info info;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;

	ACPI_FUNCTION_TRACE(ds_initialize_objects);

	status = acpi_tb_get_owner_id(table_index, &owner_id);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "**** Starting initialization of namespace objects ****\n"));
	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "Parsing all Control Methods:"));

	/* Set all init info to zero */

	ACPI_MEMSET(&info, 0, sizeof(struct acpi_init_walk_info));

	info.owner_id = owner_id;
	info.table_index = table_index;

	/* Walk entire namespace from the supplied root */

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * We don't use acpi_walk_namespace since we do not want to acquire
	 * the namespace reader lock.
	 */
	status =
	    acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
				   ACPI_NS_WALK_UNLOCK, acpi_ds_init_one_object,
				   NULL, &info, NULL);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
	}
	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
			      "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n",
			      table->signature, owner_id, info.object_count,
			      info.device_count, info.method_count,
			      info.op_region_count));

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "%u Methods, %u Regions\n", info.method_count,
			  info.op_region_count));

	return_ACPI_STATUS(AE_OK);
}
Esempio n. 9
0
static acpi_status
acpi_ds_init_one_object(acpi_handle obj_handle,
			u32 level, void *context, void **return_value)
{
	struct acpi_init_walk_info *info =
	    (struct acpi_init_walk_info *)context;
	struct acpi_namespace_node *node =
	    (struct acpi_namespace_node *)obj_handle;
	acpi_object_type type;
	acpi_status status;

	ACPI_FUNCTION_ENTRY();

	/*
	 * We are only interested in NS nodes owned by the table that
	 * was just loaded
	 */
	if (node->owner_id != info->owner_id) {
		return (AE_OK);
	}

	info->object_count++;

	/* And even then, we are only interested in a few object types */

	type = acpi_ns_get_type(obj_handle);

	switch (type) {
	case ACPI_TYPE_REGION:

		status = acpi_ds_initialize_region(obj_handle);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"During Region initialization %p [%4.4s]",
					obj_handle,
					acpi_ut_get_node_name(obj_handle)));
		}

		info->op_region_count++;
		break;

	case ACPI_TYPE_METHOD:

		info->method_count++;
		break;

	case ACPI_TYPE_DEVICE:

		info->device_count++;
		break;

	default:
		break;
	}

	/*
	 * We ignore errors from above, and always return OK, since
	 * we don't want to abort the walk on a single error.
	 */
	return (AE_OK);
}
static int read_capabilities(struct acpi_power_meter_resource *resource)
{
	int res = 0;
	int i;
	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	struct acpi_buffer state = { 0, NULL };
	struct acpi_buffer format = { sizeof("NNNNNNNNNNN"), "NNNNNNNNNNN" };
	union acpi_object *pss;
	acpi_string *str;
	acpi_status status;

	status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMC", NULL,
				      &buffer);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMC"));
		return -ENODEV;
	}

	pss = buffer.pointer;
	if (!pss ||
	    pss->type != ACPI_TYPE_PACKAGE ||
	    pss->package.count != 14) {
		dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME
			"Invalid _PMC data\n");
		res = -EFAULT;
		goto end;
	}

	/* Grab all the integer data at once */
	state.length = sizeof(struct acpi_power_meter_capabilities);
	state.pointer = &resource->caps;

	status = acpi_extract_package(pss, &format, &state);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "Invalid data"));
		res = -EFAULT;
		goto end;
	}

	if (resource->caps.units) {
		dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME
			"Unknown units %llu.\n",
			resource->caps.units);
		res = -EINVAL;
		goto end;
	}

	/* Grab the string data */
	str = &resource->model_number;

	for (i = 11; i < 14; i++) {
		union acpi_object *element = &(pss->package.elements[i]);

		if (element->type != ACPI_TYPE_STRING) {
			res = -EINVAL;
			goto error;
		}

		*str = kzalloc(sizeof(u8) * (element->string.length + 1),
			       GFP_KERNEL);
		if (!*str) {
			res = -ENOMEM;
			goto error;
		}

		strncpy(*str, element->string.pointer, element->string.length);
		str++;
	}

	dev_info(&resource->acpi_dev->dev, "Found ACPI power meter.\n");
	goto end;
error:
	str = &resource->model_number;
	for (i = 0; i < 3; i++, str++)
		kfree(*str);
end:
	kfree(buffer.pointer);
	return res;
}
Esempio n. 11
0
ACPI_STATUS
AcpiEvPciConfigRegionSetup (
    ACPI_HANDLE             Handle,
    UINT32                  Function,
    void                    *HandlerContext,
    void                    **RegionContext)
{
    ACPI_STATUS             Status = AE_OK;
    UINT64                  PciValue;
    ACPI_PCI_ID             *PciId = *RegionContext;
    ACPI_OPERAND_OBJECT     *HandlerObj;
    ACPI_NAMESPACE_NODE     *ParentNode;
    ACPI_NAMESPACE_NODE     *PciRootNode;
    ACPI_NAMESPACE_NODE     *PciDeviceNode;
    ACPI_OPERAND_OBJECT     *RegionObj = (ACPI_OPERAND_OBJECT  *) Handle;


    ACPI_FUNCTION_TRACE (EvPciConfigRegionSetup);


    HandlerObj = RegionObj->Region.Handler;
    if (!HandlerObj)
    {
        /*
         * No installed handler. This shouldn't happen because the dispatch
         * routine checks before we get here, but we check again just in case.
         */
        ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
            "Attempting to init a region %p, with no handler\n", RegionObj));
        return_ACPI_STATUS (AE_NOT_EXIST);
    }

    *RegionContext = NULL;
    if (Function == ACPI_REGION_DEACTIVATE)
    {
        if (PciId)
        {
            ACPI_FREE (PciId);
        }
        return_ACPI_STATUS (Status);
    }

    ParentNode = RegionObj->Region.Node->Parent;

    /*
     * Get the _SEG and _BBN values from the device upon which the handler
     * is installed.
     *
     * We need to get the _SEG and _BBN objects relative to the PCI BUS device.
     * This is the device the handler has been registered to handle.
     */

    /*
     * If the AddressSpace.Node is still pointing to the root, we need
     * to scan upward for a PCI Root bridge and re-associate the OpRegion
     * handlers with that device.
     */
    if (HandlerObj->AddressSpace.Node == AcpiGbl_RootNode)
    {
        /* Start search from the parent object */

        PciRootNode = ParentNode;
        while (PciRootNode != AcpiGbl_RootNode)
        {
            /* Get the _HID/_CID in order to detect a RootBridge */

            if (AcpiEvIsPciRootBridge (PciRootNode))
            {
                /* Install a handler for this PCI root bridge */
              
                Status = AcpiInstallAddressSpaceHandler (
                    (ACPI_HANDLE) PciRootNode,
                    ACPI_ADR_SPACE_PCI_CONFIG,
                    ACPI_DEFAULT_HANDLER, NULL, NULL);
                if (ACPI_FAILURE (Status))
                {
                    if (Status == AE_SAME_HANDLER)
                    {
                        /*
                         * It is OK if the handler is already installed on the
                         * root bridge. Still need to return a context object
                         * for the new PCI_Config operation region, however.
                         */
                        Status = AE_OK;
                    }
                    else
                    {
                        ACPI_EXCEPTION ((AE_INFO, Status,
                            "Could not install PciConfig handler "
                            "for Root Bridge %4.4s",
                            AcpiUtGetNodeName (PciRootNode)));
                    }
                }
                break;
            }

            PciRootNode = PciRootNode->Parent;
        }

        /* PCI root bridge not found, use namespace root node */
    }
    else
    {
        PciRootNode = HandlerObj->AddressSpace.Node;
    }

    /*
     * If this region is now initialized, we are done.
     * (InstallAddressSpaceHandler could have initialized it)
     */
    if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
    {
        return_ACPI_STATUS (AE_OK);
    }

    /* Region is still not initialized. Create a new context */

    PciId = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PCI_ID));
    if (!PciId)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /*
     * For PCI_Config space access, we need the segment, bus, device and
     * function numbers. Acquire them here.
     *
     * Find the parent device object. (This allows the operation region to be
     * within a subscope under the device, such as a control method.)
     */
    PciDeviceNode = RegionObj->Region.Node;
    while (PciDeviceNode && (PciDeviceNode->Type != ACPI_TYPE_DEVICE))
    {
        PciDeviceNode = PciDeviceNode->Parent;
    }

    if (!PciDeviceNode)
    {
        ACPI_FREE (PciId);
        return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
    }

    /*
     * Get the PCI device and function numbers from the _ADR object
     * contained in the parent's scope.
     */
    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR,
        PciDeviceNode, &PciValue);

    /*
     * The default is zero, and since the allocation above zeroed the data,
     * just do nothing on failure.
     */
    if (ACPI_SUCCESS (Status))
    {
        PciId->Device   = ACPI_HIWORD (ACPI_LODWORD (PciValue));
        PciId->Function = ACPI_LOWORD (ACPI_LODWORD (PciValue));
    }

    /* The PCI segment number comes from the _SEG method */

    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG,
        PciRootNode, &PciValue);
    if (ACPI_SUCCESS (Status))
    {
        PciId->Segment = ACPI_LOWORD (PciValue);
    }

    /* The PCI bus number comes from the _BBN method */

    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN,
        PciRootNode, &PciValue);
    if (ACPI_SUCCESS (Status))
    {
        PciId->Bus = ACPI_LOWORD (PciValue);
    }

    /* Complete/update the PCI ID for this device */

    Status = AcpiHwDerivePciId (PciId, PciRootNode, RegionObj->Region.Node);
    if (ACPI_FAILURE (Status))
    {
        ACPI_FREE (PciId);
        return_ACPI_STATUS (Status);
    }

    *RegionContext = PciId;
    return_ACPI_STATUS (AE_OK);
}
static int read_domain_devices(struct acpi_power_meter_resource *resource)
{
	int res = 0;
	int i;
	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	union acpi_object *pss;
	acpi_status status;

	status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMD", NULL,
				      &buffer);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMD"));
		return -ENODEV;
	}

	pss = buffer.pointer;
	if (!pss ||
	    pss->type != ACPI_TYPE_PACKAGE) {
		dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME
			"Invalid _PMD data\n");
		res = -EFAULT;
		goto end;
	}

	if (!pss->package.count)
		goto end;

	resource->domain_devices = kzalloc(sizeof(struct acpi_device *) *
					   pss->package.count, GFP_KERNEL);
	if (!resource->domain_devices) {
		res = -ENOMEM;
		goto end;
	}

	resource->holders_dir = kobject_create_and_add("measures",
					&resource->acpi_dev->dev.kobj);
	if (!resource->holders_dir) {
		res = -ENOMEM;
		goto exit_free;
	}

	resource->num_domain_devices = pss->package.count;

	for (i = 0; i < pss->package.count; i++) {
		struct acpi_device *obj;
		union acpi_object *element = &(pss->package.elements[i]);

		/* Refuse non-references */
		if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
			continue;

		/* Create a symlink to domain objects */
		resource->domain_devices[i] = NULL;
		status = acpi_bus_get_device(element->reference.handle,
					     &resource->domain_devices[i]);
		if (ACPI_FAILURE(status))
			continue;

		obj = resource->domain_devices[i];
		get_device(&obj->dev);

		res = sysfs_create_link(resource->holders_dir, &obj->dev.kobj,
				      kobject_name(&obj->dev.kobj));
		if (res) {
			put_device(&obj->dev);
			resource->domain_devices[i] = NULL;
		}
	}

	res = 0;
	goto end;

exit_free:
	kfree(resource->domain_devices);
end:
	kfree(buffer.pointer);
	return res;
}
Esempio n. 13
0
static void acpi_bus_osc_support(void)
{
	u32 capbuf[2];
	struct acpi_osc_context context = {
		.uuid_str = sb_uuid_str,
		.rev = 1,
		.cap.length = 8,
		.cap.pointer = capbuf,
	};
	acpi_handle handle;

	capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE;
	capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\
			defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT;
#endif

#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT;
#endif

	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;

	if (!ghes_disable)
		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
	if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
		return;
	if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
		u32 *capbuf_ret = context.ret.pointer;
		if (context.ret.length > OSC_SUPPORT_DWORD)
			osc_sb_apei_support_acked =
				capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
		kfree(context.ret.pointer);
	}
	/* do we need to check other returned cap? Sounds no */
}

/* --------------------------------------------------------------------------
                             Notification Handling
   -------------------------------------------------------------------------- */

/**
 * acpi_bus_notify
 * ---------------
 * Callback for all 'system-level' device notifications (values 0x00-0x7F).
 */
static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
{
	struct acpi_device *adev;
	struct acpi_driver *driver;
	u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
	bool hotplug_event = false;

	switch (type) {
	case ACPI_NOTIFY_BUS_CHECK:
		acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
		hotplug_event = true;
		break;

	case ACPI_NOTIFY_DEVICE_CHECK:
		acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
		hotplug_event = true;
		break;

	case ACPI_NOTIFY_DEVICE_WAKE:
		acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n");
		break;

	case ACPI_NOTIFY_EJECT_REQUEST:
		acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
		hotplug_event = true;
		break;

	case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
		acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n");
		/* TBD: Exactly what does 'light' mean? */
		break;

	case ACPI_NOTIFY_FREQUENCY_MISMATCH:
		acpi_handle_err(handle, "Device cannot be configured due "
				"to a frequency mismatch\n");
		break;

	case ACPI_NOTIFY_BUS_MODE_MISMATCH:
		acpi_handle_err(handle, "Device cannot be configured due "
				"to a bus mode mismatch\n");
		break;

	case ACPI_NOTIFY_POWER_FAULT:
		acpi_handle_err(handle, "Device has suffered a power fault\n");
		break;

	default:
		acpi_handle_debug(handle, "Unknown event type 0x%x\n", type);
		break;
	}

	adev = acpi_bus_get_acpi_device(handle);
	if (!adev)
		goto err;

	driver = adev->driver;
	if (driver && driver->ops.notify &&
	    (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
		driver->ops.notify(adev, type);

	if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
		return;

	acpi_bus_put_acpi_device(adev);
	return;

 err:
	acpi_evaluate_ost(handle, type, ost_code, NULL);
}

/* --------------------------------------------------------------------------
                             Initialization/Cleanup
   -------------------------------------------------------------------------- */

static int __init acpi_bus_init_irq(void)
{
	acpi_status status;
	char *message = NULL;


	/*
	 * Let the system know what interrupt model we are using by
	 * evaluating the \_PIC object, if exists.
	 */

	switch (acpi_irq_model) {
	case ACPI_IRQ_MODEL_PIC:
		message = "PIC";
		break;
	case ACPI_IRQ_MODEL_IOAPIC:
		message = "IOAPIC";
		break;
	case ACPI_IRQ_MODEL_IOSAPIC:
		message = "IOSAPIC";
		break;
	case ACPI_IRQ_MODEL_GIC:
		message = "GIC";
		break;
	case ACPI_IRQ_MODEL_PLATFORM:
		message = "platform specific model";
		break;
	default:
		printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
		return -ENODEV;
	}

	printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);

	status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model);
	if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
		return -ENODEV;
	}

	return 0;
}
Esempio n. 14
0
ACPI_STATUS
AcpiLeaveSleepState (
    UINT8                   SleepState)
{
    ACPI_OBJECT_LIST        ArgList;
    ACPI_OBJECT             Arg;
    ACPI_STATUS             Status;
    ACPI_BIT_REGISTER_INFO  *SleepTypeRegInfo;
    ACPI_BIT_REGISTER_INFO  *SleepEnableRegInfo;
    UINT32                  Pm1aControl;
    UINT32                  Pm1bControl;


    ACPI_FUNCTION_TRACE (AcpiLeaveSleepState);


    /*
     * Set SLP_TYPE and SLP_EN to state S0.
     * This is unclear from the ACPI Spec, but it is required
     * by some machines.
     */
    Status = AcpiGetSleepTypeData (ACPI_STATE_S0,
                    &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
    if (ACPI_SUCCESS (Status))
    {
        SleepTypeRegInfo =
            AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE);
        SleepEnableRegInfo =
            AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE);

        /* Get current value of PM1A control */

        Status = AcpiHwRegisterRead (ACPI_REGISTER_PM1_CONTROL,
                    &Pm1aControl);
        if (ACPI_SUCCESS (Status))
        {
            /* 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);

            /* Write the control registers and ignore any errors */

            (void) AcpiHwWritePm1Control (Pm1aControl, Pm1bControl);
        }
    }

    /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */

    AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID;

    /* Setup parameter object */

    ArgList.Count = 1;
    ArgList.Pointer = &Arg;
    Arg.Type = ACPI_TYPE_INTEGER;

    /* Ignore any errors from these methods */

    Arg.Integer.Value = ACPI_SST_WAKING;
    Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
    if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During Method _SST"));
    }

    Arg.Integer.Value = SleepState;
    Status = AcpiEvaluateObject (NULL, METHOD_NAME__BFS, &ArgList, NULL);
    if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During Method _BFS"));
    }

    Status = AcpiEvaluateObject (NULL, METHOD_NAME__WAK, &ArgList, NULL);
    if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During Method _WAK"));
    }
    /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */

    /*
     * Restore the GPEs:
     * 1) Disable/Clear all GPEs
     * 2) Enable all runtime GPEs
     */
    Status = AcpiHwDisableAllGpes ();
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
    AcpiGbl_SystemAwakeAndRunning = TRUE;

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

    /* Enable power button */

    (void) AcpiWriteBitRegister(
            AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].EnableRegisterId,
            ACPI_ENABLE_EVENT);

    (void) AcpiWriteBitRegister(
            AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].StatusRegisterId,
            ACPI_CLEAR_STATUS);

    /*
     * Enable BM arbitration. This feature is contained within an
     * optional register (PM2 Control), so ignore a BAD_ADDRESS
     * exception.
     */
    Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 0);
    if (ACPI_FAILURE (Status) && (Status != AE_BAD_ADDRESS))
    {
        return_ACPI_STATUS (Status);
    }

    Arg.Integer.Value = ACPI_SST_WORKING;
    Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
    if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During Method _SST"));
    }
    if (ACPI_FAILURE (Status) && Status == AE_NOT_FOUND)
    {
        Status = AE_OK;
    }

    return_ACPI_STATUS (Status);
}
Esempio n. 15
0
File: acpica.c Progetto: olsner/os
static ACPI_STATUS InitializeFullAcpi (void)
{
    ACPI_STATUS             Status;


    /* Initialize the ACPICA subsystem */

    Status = AcpiInitializeSubsystem ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "While initializing ACPICA"));
        return (Status);
    }

    /* Initialize the ACPICA Table Manager and get all ACPI tables */

    Status = AcpiInitializeTables (NULL, 0, FALSE);
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "While initializing Table Manager"));
        return (Status);
    }

    /* Create the ACPI namespace from ACPI tables */

    Status = AcpiLoadTables ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "While loading ACPI tables"));
        return (Status);
    }

    /* Install local handlers */

    Status = InstallHandlers ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "While installing handlers"));
        return (Status);
    }

    /* Initialize the ACPI hardware */

    Status = AcpiEnableSubsystem (ACPI_FULL_INITIALIZATION);
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "While enabling ACPICA"));
        return (Status);
    }

    /* Complete the ACPI namespace object initialization */

    Status = AcpiInitializeObjects (ACPI_FULL_INITIALIZATION);
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "While initializing ACPICA objects"));
        return (Status);
    }

    return (AE_OK);
}
Esempio n. 16
0
struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header
        *table_header,
        struct acpi_table_desc
        *table_desc)
{
    acpi_status status;
    struct acpi_table_header *new_table = NULL;
    acpi_physical_address new_address = 0;
    u32 new_table_length = 0;
    u8 new_flags;
    char *override_type;

    /* (1) Attempt logical override (returns a logical address) */

    status = acpi_os_table_override(table_header, &new_table);
    if (ACPI_SUCCESS(status) && new_table) {
        new_address = ACPI_PTR_TO_PHYSADDR(new_table);
        new_table_length = new_table->length;
        new_flags = ACPI_TABLE_ORIGIN_OVERRIDE;
        override_type = "Logical";
        goto finish_override;
    }

    /* (2) Attempt physical override (returns a physical address) */

    status = acpi_os_physical_table_override(table_header,
             &new_address,
             &new_table_length);
    if (ACPI_SUCCESS(status) && new_address && new_table_length) {

        /* Map the entire new table */

        new_table = acpi_os_map_memory(new_address, new_table_length);
        if (!new_table) {
            ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
                            "%4.4s %p Attempted physical table override failed",
                            table_header->signature,
                            ACPI_PHYSADDR_TO_PTR(table_desc->address)));
            return (NULL);
        }

        override_type = "Physical";
        new_flags = ACPI_TABLE_ORIGIN_MAPPED;
        goto finish_override;
    }

    return (NULL);		/* There was no override */

finish_override:

    ACPI_INFO((AE_INFO,
               "%4.4s %p %s table override, new table: %p",
               table_header->signature,
               ACPI_PHYSADDR_TO_PTR(table_desc->address),
               override_type, new_table));

    /* We can now unmap/delete the original table (if fully mapped) */

    acpi_tb_delete_table(table_desc);

    /* Setup descriptor for the new table */

    table_desc->address = new_address;
    table_desc->pointer = new_table;
    table_desc->length = new_table_length;
    table_desc->flags = new_flags;

    return (new_table);
}
Esempio n. 17
0
void acpi_ev_update_gpes(acpi_owner_id table_owner_id)
{
	struct acpi_gpe_xrupt_info *gpe_xrupt_info;
	struct acpi_gpe_block_info *gpe_block;
	struct acpi_gpe_walk_info walk_info;
	acpi_status status = AE_OK;

	/*
	 * Find any _Lxx/_Exx GPE methods that have just been loaded.
	 *
	 * Any GPEs that correspond to new _Lxx/_Exx methods are immediately
	 * enabled.
	 *
	 * Examine the namespace underneath each gpe_device within the
	 * gpe_block lists.
	 */
	status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
	if (ACPI_FAILURE(status)) {
		return;
	}

	walk_info.count = 0;
	walk_info.owner_id = table_owner_id;
	walk_info.execute_by_owner_id = TRUE;

	/* Walk the interrupt level descriptor list */

	gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
	while (gpe_xrupt_info) {

		/* Walk all Gpe Blocks attached to this interrupt level */

		gpe_block = gpe_xrupt_info->gpe_block_list_head;
		while (gpe_block) {
			walk_info.gpe_block = gpe_block;
			walk_info.gpe_device = gpe_block->node;

			status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD,
							walk_info.gpe_device,
							ACPI_UINT32_MAX,
							ACPI_NS_WALK_NO_UNLOCK,
							acpi_ev_match_gpe_method,
							NULL, &walk_info, NULL);
			if (ACPI_FAILURE(status)) {
				ACPI_EXCEPTION((AE_INFO, status,
						"While decoding _Lxx/_Exx methods"));
			}

			gpe_block = gpe_block->next;
		}

		gpe_xrupt_info = gpe_xrupt_info->next;
	}

	if (walk_info.count) {
		ACPI_INFO((AE_INFO, "Enabled %u new GPEs", walk_info.count));
	}

	(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
	return;
}
Esempio n. 18
0
static int acpi_processor_get_performance_control(struct acpi_processor *pr)
{
	int result = 0;
	acpi_status status = 0;
	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	union acpi_object *pct = NULL;
	union acpi_object obj = { 0 };


	status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PCT"));
		return -ENODEV;
	}

	pct = (union acpi_object *)buffer.pointer;
	if (!pct || (pct->type != ACPI_TYPE_PACKAGE)
	    || (pct->package.count != 2)) {
		printk(KERN_ERR PREFIX "Invalid _PCT data\n");
		result = -EFAULT;
		goto end;
	}

	/*
	 * control_register
	 */

	obj = pct->package.elements[0];

	if ((obj.type != ACPI_TYPE_BUFFER)
	    || (obj.buffer.length < sizeof(struct acpi_pct_register))
	    || (obj.buffer.pointer == NULL)) {
		printk(KERN_ERR PREFIX "Invalid _PCT data (control_register)\n");
		result = -EFAULT;
		goto end;
	}
	memcpy(&pr->performance->control_register, obj.buffer.pointer,
	       sizeof(struct acpi_pct_register));

	/*
	 * status_register
	 */

	obj = pct->package.elements[1];

	if ((obj.type != ACPI_TYPE_BUFFER)
	    || (obj.buffer.length < sizeof(struct acpi_pct_register))
	    || (obj.buffer.pointer == NULL)) {
		printk(KERN_ERR PREFIX "Invalid _PCT data (status_register)\n");
		result = -EFAULT;
		goto end;
	}

	memcpy(&pr->performance->status_register, obj.buffer.pointer,
	       sizeof(struct acpi_pct_register));

      end:
	kfree(buffer.pointer);

	return result;
}
Esempio n. 19
0
ACPI_STATUS
AcpiEvAddressSpaceDispatch (
    ACPI_OPERAND_OBJECT     *RegionObj,
    ACPI_OPERAND_OBJECT     *FieldObj,
    UINT32                  Function,
    UINT32                  RegionOffset,
    UINT32                  BitWidth,
    UINT64                  *Value)
{
    ACPI_STATUS             Status;
    ACPI_ADR_SPACE_HANDLER  Handler;
    ACPI_ADR_SPACE_SETUP    RegionSetup;
    ACPI_OPERAND_OBJECT     *HandlerDesc;
    ACPI_OPERAND_OBJECT     *RegionObj2;
    void                    *RegionContext = NULL;
    ACPI_CONNECTION_INFO    *Context;
    ACPI_PHYSICAL_ADDRESS   Address;


    ACPI_FUNCTION_TRACE (EvAddressSpaceDispatch);


    RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
    if (!RegionObj2)
    {
        return_ACPI_STATUS (AE_NOT_EXIST);
    }

    /* Ensure that there is a handler associated with this region */

    HandlerDesc = RegionObj->Region.Handler;
    if (!HandlerDesc)
    {
        ACPI_ERROR ((AE_INFO,
            "No handler for Region [%4.4s] (%p) [%s]",
            AcpiUtGetNodeName (RegionObj->Region.Node),
            RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId)));

        return_ACPI_STATUS (AE_NOT_EXIST);
    }

    Context = HandlerDesc->AddressSpace.Context;

    /*
     * It may be the case that the region has never been initialized.
     * Some types of regions require special init code
     */
    if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE))
    {
        /* This region has not been initialized yet, do it */

        RegionSetup = HandlerDesc->AddressSpace.Setup;
        if (!RegionSetup)
        {
            /* No initialization routine, exit with error */

            ACPI_ERROR ((AE_INFO,
                "No init routine for region(%p) [%s]",
                RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
            return_ACPI_STATUS (AE_NOT_EXIST);
        }

        /*
         * We must exit the interpreter because the region setup will
         * potentially execute control methods (for example, the _REG method
         * for this region)
         */
        AcpiExExitInterpreter ();

        Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE,
            Context, &RegionContext);

        /* Re-enter the interpreter */

        AcpiExEnterInterpreter ();

        /* Check for failure of the Region Setup */

        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status,
                "During region initialization: [%s]",
                AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
            return_ACPI_STATUS (Status);
        }

        /* Region initialization may have been completed by RegionSetup */

        if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE))
        {
            RegionObj->Region.Flags |= AOPOBJ_SETUP_COMPLETE;

            /*
             * Save the returned context for use in all accesses to
             * the handler for this particular region
             */
            if (!(RegionObj2->Extra.RegionContext))
            {
                RegionObj2->Extra.RegionContext = RegionContext;
            }
        }
    }

    /* We have everything we need, we can invoke the address space handler */

    Handler = HandlerDesc->AddressSpace.Handler;
    Address = (RegionObj->Region.Address + RegionOffset);

    /*
     * Special handling for GenericSerialBus and GeneralPurposeIo:
     * There are three extra parameters that must be passed to the
     * handler via the context:
     *   1) Connection buffer, a resource template from Connection() op
     *   2) Length of the above buffer
     *   3) Actual access length from the AccessAs() op
     *
     * In addition, for GeneralPurposeIo, the Address and BitWidth fields
     * are defined as follows:
     *   1) Address is the pin number index of the field (bit offset from
     *      the previous Connection)
     *   2) BitWidth is the actual bit length of the field (number of pins)
     */
    if ((RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS) &&
        Context &&
        FieldObj)
    {
        /* Get the Connection (ResourceTemplate) buffer */

        Context->Connection = FieldObj->Field.ResourceBuffer;
        Context->Length = FieldObj->Field.ResourceLength;
        Context->AccessLength = FieldObj->Field.AccessLength;
    }
    if ((RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO) &&
        Context &&
        FieldObj)
    {
        /* Get the Connection (ResourceTemplate) buffer */

        Context->Connection = FieldObj->Field.ResourceBuffer;
        Context->Length = FieldObj->Field.ResourceLength;
        Context->AccessLength = FieldObj->Field.AccessLength;
        Address = FieldObj->Field.PinNumberIndex;
        BitWidth = FieldObj->Field.BitLength;
    }

    ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
        "Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
        &RegionObj->Region.Handler->AddressSpace, Handler,
        ACPI_FORMAT_UINT64 (Address),
        AcpiUtGetRegionName (RegionObj->Region.SpaceId)));

    if (!(HandlerDesc->AddressSpace.HandlerFlags &
        ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
    {
        /*
         * For handlers other than the default (supplied) handlers, we must
         * exit the interpreter because the handler *might* block -- we don't
         * know what it will do, so we can't hold the lock on the intepreter.
         */
        AcpiExExitInterpreter();
    }

    /* Call the handler */

    Status = Handler (Function, Address, BitWidth, Value, Context,
        RegionObj2->Extra.RegionContext);

    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "Returned by Handler for [%s]",
            AcpiUtGetRegionName (RegionObj->Region.SpaceId)));

        /*
         * Special case for an EC timeout. These are seen so frequently
         * that an additional error message is helpful
         */
        if ((RegionObj->Region.SpaceId == ACPI_ADR_SPACE_EC) &&
            (Status == AE_TIME))
        {
            ACPI_ERROR ((AE_INFO,
                "Timeout from EC hardware or EC device driver"));
        }
    }

    if (!(HandlerDesc->AddressSpace.HandlerFlags &
        ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
    {
        /*
         * We just returned from a non-default handler, we must re-enter the
         * interpreter
         */
        AcpiExEnterInterpreter ();
    }

    return_ACPI_STATUS (Status);
}
Esempio n. 20
0
static int acpi_processor_get_performance_states(struct acpi_processor *pr)
{
	int result = 0;
	acpi_status status = AE_OK;
	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	struct acpi_buffer format = { sizeof("NNNNNN"), "NNNNNN" };
	struct acpi_buffer state = { 0, NULL };
	union acpi_object *pss = NULL;
	int i;


	status = acpi_evaluate_object(pr->handle, "_PSS", NULL, &buffer);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PSS"));
		return -ENODEV;
	}

	pss = (union acpi_object *)buffer.pointer;
	if (!pss || (pss->type != ACPI_TYPE_PACKAGE)) {
		printk(KERN_ERR PREFIX "Invalid _PSS data\n");
		result = -EFAULT;
		goto end;
	}

	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d performance states\n",
			  pss->package.count));

	pr->performance->state_count = pss->package.count;
	pr->performance->states =
	    kmalloc(sizeof(struct acpi_processor_px) * pss->package.count,
		    GFP_KERNEL);
	if (!pr->performance->states) {
		result = -ENOMEM;
		goto end;
	}

	for (i = 0; i < pr->performance->state_count; i++) {

		struct acpi_processor_px *px = &(pr->performance->states[i]);

		state.length = sizeof(struct acpi_processor_px);
		state.pointer = px;

		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Extracting state %d\n", i));

		status = acpi_extract_package(&(pss->package.elements[i]),
					      &format, &state);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status, "Invalid _PSS data"));
			result = -EFAULT;
			kfree(pr->performance->states);
			goto end;
		}

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "State [%d]: core_frequency[%d] power[%d] transition_latency[%d] bus_master_latency[%d] control[0x%x] status[0x%x]\n",
				  i,
				  (u32) px->core_frequency,
				  (u32) px->power,
				  (u32) px->transition_latency,
				  (u32) px->bus_master_latency,
				  (u32) px->control, (u32) px->status));

		/*
 		 * Check that ACPI's u64 MHz will be valid as u32 KHz in cpufreq
		 */
		if (!px->core_frequency ||
		    ((u32)(px->core_frequency * 1000) !=
		     (px->core_frequency * 1000))) {
			printk(KERN_ERR PREFIX
			       "Invalid BIOS _PSS frequency: 0x%llx MHz\n",
			       px->core_frequency);
			result = -EFAULT;
			kfree(pr->performance->states);
			goto end;
		}
	}

      end:
	kfree(buffer.pointer);

	return result;
}
Esempio n. 21
0
ACPI_STATUS
AcpiPsParseLoop (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_STATUS             Status = AE_OK;
    ACPI_PARSE_OBJECT       *Op = NULL;     /* current op */
    ACPI_PARSE_STATE        *ParserState;
    UINT8                   *AmlOpStart = NULL;


    ACPI_FUNCTION_TRACE_PTR (PsParseLoop, WalkState);


    if (WalkState->DescendingCallback == NULL)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    ParserState = &WalkState->ParserState;
    WalkState->ArgTypes = 0;

#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))

    if (WalkState->WalkType & ACPI_WALK_METHOD_RESTART)
    {
        /* We are restarting a preempted control method */

        if (AcpiPsHasCompletedScope (ParserState))
        {
            /*
             * We must check if a predicate to an IF or WHILE statement
             * was just completed
             */
            if ((ParserState->Scope->ParseScope.Op) &&
               ((ParserState->Scope->ParseScope.Op->Common.AmlOpcode == AML_IF_OP) ||
                (ParserState->Scope->ParseScope.Op->Common.AmlOpcode == AML_WHILE_OP)) &&
                (WalkState->ControlState) &&
                (WalkState->ControlState->Common.State ==
                    ACPI_CONTROL_PREDICATE_EXECUTING))
            {
                /*
                 * A predicate was just completed, get the value of the
                 * predicate and branch based on that value
                 */
                WalkState->Op = NULL;
                Status = AcpiDsGetPredicateValue (WalkState, ACPI_TO_POINTER (TRUE));
                if (ACPI_FAILURE (Status) &&
                    ((Status & AE_CODE_MASK) != AE_CODE_CONTROL))
                {
                    if (Status == AE_AML_NO_RETURN_VALUE)
                    {
                        ACPI_EXCEPTION ((AE_INFO, Status,
                            "Invoked method did not return a value"));
                    }

                    ACPI_EXCEPTION ((AE_INFO, Status, "GetPredicate Failed"));
                    return_ACPI_STATUS (Status);
                }

                Status = AcpiPsNextParseState (WalkState, Op, Status);
            }

            AcpiPsPopScope (ParserState, &Op,
                &WalkState->ArgTypes, &WalkState->ArgCount);
            ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", Op));
        }
        else if (WalkState->PrevOp)
        {
            /* We were in the middle of an op */

            Op = WalkState->PrevOp;
            WalkState->ArgTypes = WalkState->PrevArgTypes;
        }
    }
#endif

    /* Iterative parsing loop, while there is more AML to process: */

    while ((ParserState->Aml < ParserState->AmlEnd) || (Op))
    {
        AmlOpStart = ParserState->Aml;
        if (!Op)
        {
            Status = AcpiPsCreateOp (WalkState, AmlOpStart, &Op);
            if (ACPI_FAILURE (Status))
            {
                if (Status == AE_CTRL_PARSE_CONTINUE)
                {
                    continue;
                }

                if (Status == AE_CTRL_PARSE_PENDING)
                {
                    Status = AE_OK;
                }

                if (Status == AE_CTRL_TERMINATE)
                {
                    return_ACPI_STATUS (Status);
                }

                Status = AcpiPsCompleteOp (WalkState, &Op, Status);
                if (ACPI_FAILURE (Status))
                {
                    return_ACPI_STATUS (Status);
                }

                continue;
            }

            AcpiExStartTraceOpcode (Op, WalkState);
        }


        /*
         * Start ArgCount at zero because we don't know if there are
         * any args yet
         */
        WalkState->ArgCount  = 0;

        /* Are there any arguments that must be processed? */

        if (WalkState->ArgTypes)
        {
            /* Get arguments */

            Status = AcpiPsGetArguments (WalkState, AmlOpStart, Op);
            if (ACPI_FAILURE (Status))
            {
                Status = AcpiPsCompleteOp (WalkState, &Op, Status);
                if (ACPI_FAILURE (Status))
                {
                    return_ACPI_STATUS (Status);
                }

                continue;
            }
        }

        /* Check for arguments that need to be processed */

        if (WalkState->ArgCount)
        {
            /*
             * There are arguments (complex ones), push Op and
             * prepare for argument
             */
            Status = AcpiPsPushScope (ParserState, Op,
                WalkState->ArgTypes, WalkState->ArgCount);
            if (ACPI_FAILURE (Status))
            {
                Status = AcpiPsCompleteOp (WalkState, &Op, Status);
                if (ACPI_FAILURE (Status))
                {
                    return_ACPI_STATUS (Status);
                }

                continue;
            }

            Op = NULL;
            continue;
        }

        /*
         * All arguments have been processed -- Op is complete,
         * prepare for next
         */
        WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
        if (WalkState->OpInfo->Flags & AML_NAMED)
        {
            if (Op->Common.AmlOpcode == AML_REGION_OP ||
                Op->Common.AmlOpcode == AML_DATA_REGION_OP)
            {
                /*
                 * Skip parsing of control method or opregion body,
                 * because we don't have enough info in the first pass
                 * to parse them correctly.
                 *
                 * Completed parsing an OpRegion declaration, we now
                 * know the length.
                 */
                Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data);
            }
        }

        if (WalkState->OpInfo->Flags & AML_CREATE)
        {
            /*
             * Backup to beginning of CreateXXXfield declaration (1 for
             * Opcode)
             *
             * BodyLength is unknown until we parse the body
             */
            Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data);
        }

        if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
        {
            /*
             * Backup to beginning of BankField declaration
             *
             * BodyLength is unknown until we parse the body
             */
            Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data);
        }

        /* This op complete, notify the dispatcher */

        if (WalkState->AscendingCallback != NULL)
        {
            WalkState->Op = Op;
            WalkState->Opcode = Op->Common.AmlOpcode;

            Status = WalkState->AscendingCallback (WalkState);
            Status = AcpiPsNextParseState (WalkState, Op, Status);
            if (Status == AE_CTRL_PENDING)
            {
                Status = AE_OK;
            }
        }

        Status = AcpiPsCompleteOp (WalkState, &Op, Status);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }

    } /* while ParserState->Aml */

    Status = AcpiPsCompleteFinalOp (WalkState, Op, Status);
    return_ACPI_STATUS (Status);
}
Esempio n. 22
0
int acpi_processor_notify_smm(struct module *calling_module)
{
	acpi_status status;
	static int is_done = 0;


	if (!(acpi_processor_ppc_status & PPC_REGISTERED))
		return -EBUSY;

	if (!try_module_get(calling_module))
		return -EINVAL;

	/* is_done is set to negative if an error occured,
	 * and to postitive if _no_ error occured, but SMM
	 * was already notified. This avoids double notification
	 * which might lead to unexpected results...
	 */
	if (is_done > 0) {
		module_put(calling_module);
		return 0;
	} else if (is_done < 0) {
		module_put(calling_module);
		return is_done;
	}

	is_done = -EIO;

	/* Can't write pstate_cnt to smi_cmd if either value is zero */
	if ((!acpi_fadt.smi_cmd) || (!acpi_fadt.pstate_cnt)) {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No SMI port or pstate_cnt\n"));
		module_put(calling_module);
		return 0;
	}

	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
			  "Writing pstate_cnt [0x%x] to smi_cmd [0x%x]\n",
			  acpi_fadt.pstate_cnt, acpi_fadt.smi_cmd));

	/* FADT v1 doesn't support pstate_cnt, many BIOS vendors use
	 * it anyway, so we need to support it... */
	if (acpi_fadt_is_v1) {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "Using v1.0 FADT reserved value for pstate_cnt\n"));
	}

	status = acpi_os_write_port(acpi_fadt.smi_cmd,
				    (u32) acpi_fadt.pstate_cnt, 8);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status,
				"Failed to write pstate_cnt [0x%x] to "
				"smi_cmd [0x%x]", acpi_fadt.pstate_cnt,
				acpi_fadt.smi_cmd));
		module_put(calling_module);
		return status;
	}

	/* Success. If there's no _PPC, we need to fear nothing, so
	 * we can allow the cpufreq driver to be rmmod'ed. */
	is_done = 1;

	if (!(acpi_processor_ppc_status & PPC_IN_USE))
		module_put(calling_module);

	return 0;
}
Esempio n. 23
0
ACPI_STATUS
AcpiTbVerifyTempTable (
    ACPI_TABLE_DESC         *TableDesc,
    char                    *Signature,
    UINT32                  *TableIndex)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (TbVerifyTempTable);


    /* Validate the table */

    Status = AcpiTbValidateTempTable (TableDesc);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* If a particular signature is expected (DSDT/FACS), it must match */

    if (Signature &&
        !ACPI_COMPARE_NAMESEG (&TableDesc->Signature, Signature))
    {
        ACPI_BIOS_ERROR ((AE_INFO,
            "Invalid signature 0x%X for ACPI table, expected [%s]",
            TableDesc->Signature.Integer, Signature));
        Status = AE_BAD_SIGNATURE;
        goto InvalidateAndExit;
    }

    if (AcpiGbl_EnableTableValidation)
    {
        /* Verify the checksum */

        Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY,
                "%4.4s 0x%8.8X%8.8X"
                " Attempted table install failed",
                AcpiUtValidNameseg (TableDesc->Signature.Ascii) ?
                    TableDesc->Signature.Ascii : "????",
                ACPI_FORMAT_UINT64 (TableDesc->Address)));

            goto InvalidateAndExit;
        }

        /* Avoid duplications */

        if (TableIndex)
        {
            Status = AcpiTbCheckDuplication (TableDesc, TableIndex);
            if (ACPI_FAILURE (Status))
            {
                if (Status != AE_CTRL_TERMINATE)
                {
                    ACPI_EXCEPTION ((AE_INFO, Status,
                        "%4.4s 0x%8.8X%8.8X"
                        " Table is already loaded",
                        AcpiUtValidNameseg (TableDesc->Signature.Ascii) ?
                            TableDesc->Signature.Ascii : "????",
                        ACPI_FORMAT_UINT64 (TableDesc->Address)));
                }

                goto InvalidateAndExit;
            }
        }

        TableDesc->Flags |= ACPI_TABLE_IS_VERIFIED;
    }

    return_ACPI_STATUS (Status);

InvalidateAndExit:
    AcpiTbInvalidateTable (TableDesc);
    return_ACPI_STATUS (Status);
}
Esempio n. 24
0
ACPI_STATUS
AcpiInitializeSubsystem (
    void)
{
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem);


    AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE;
    ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ());

    /* Initialize the OS-Dependent layer */

    Status = AcpiOsInitialize ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization"));
        return_ACPI_STATUS (Status);
    }

    /* Initialize all globals used by the subsystem */

    Status = AcpiUtInitGlobals ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals"));
        return_ACPI_STATUS (Status);
    }

    /* Create the default mutex objects */

    Status = AcpiUtMutexInitialize ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation"));
        return_ACPI_STATUS (Status);
    }

    /*
     * Initialize the namespace manager and
     * the root of the namespace tree
     */
    Status = AcpiNsRootInitialize ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization"));
        return_ACPI_STATUS (Status);
    }

    /* Initialize the global OSI interfaces list with the static names */

    Status = AcpiUtInitializeInterfaces ();
    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization"));
        return_ACPI_STATUS (Status);
    }

    /* If configured, initialize the AML debugger */

    ACPI_DEBUGGER_EXEC (Status = AcpiDbInitialize ());
    return_ACPI_STATUS (Status);
}
Esempio n. 25
0
/******************************************************************************
 *
 * FUNCTION:    acpi_hw_set_mode
 *
 * PARAMETERS:  Mode            - SYS_MODE_ACPI or SYS_MODE_LEGACY
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Transitions the system into the requested mode.
 *
 ******************************************************************************/
acpi_status acpi_hw_set_mode(u32 mode)
{

	acpi_status status;
	u32 retry;

	ACPI_FUNCTION_TRACE(hw_set_mode);

	/*
	 * ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
	 * system does not support mode transition.
	 */
	if (!acpi_gbl_FADT.smi_command) {
		ACPI_ERROR((AE_INFO,
			    "No SMI_CMD in FADT, mode transition failed"));
		return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
	}

	/*
	 * ACPI 2.0 clarified the meaning of ACPI_ENABLE and ACPI_DISABLE
	 * in FADT: If it is zero, enabling or disabling is not supported.
	 * As old systems may have used zero for mode transition,
	 * we make sure both the numbers are zero to determine these
	 * transitions are not supported.
	 */
	if (!acpi_gbl_FADT.acpi_enable && !acpi_gbl_FADT.acpi_disable) {
		ACPI_ERROR((AE_INFO,
			    "No ACPI mode transition supported in this system (enable/disable both zero)"));
		return_ACPI_STATUS(AE_OK);
	}

	switch (mode) {
	case ACPI_SYS_MODE_ACPI:

		/* BIOS should have disabled ALL fixed and GP events */

		status = acpi_os_write_port(acpi_gbl_FADT.smi_command,
					    (u32) acpi_gbl_FADT.acpi_enable, 8);
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "Attempting to enable ACPI mode\n"));
		break;

	case ACPI_SYS_MODE_LEGACY:

		/*
		 * BIOS should clear all fixed status bits and restore fixed event
		 * enable bits to default
		 */
		status = acpi_os_write_port(acpi_gbl_FADT.smi_command,
					    (u32) acpi_gbl_FADT.acpi_disable,
					    8);
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "Attempting to enable Legacy (non-ACPI) mode\n"));
		break;

	default:
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status,
				"Could not write ACPI mode change"));
		return_ACPI_STATUS(status);
	}

	/*
	 * Some hardware takes a LONG time to switch modes. Give them 3 sec to
	 * do so, but allow faster systems to proceed more quickly.
	 */
	retry = 3000;
	while (retry) {
		if (acpi_hw_get_mode() == mode) {
			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
					  "Mode %X successfully enabled\n",
					  mode));
			return_ACPI_STATUS(AE_OK);
		}
		acpi_os_stall(1000);
		retry--;
	}

	ACPI_ERROR((AE_INFO, "Hardware did not change modes"));
	return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
}
Esempio n. 26
0
acpi_status
acpi_ns_simple_repair(struct acpi_evaluate_info *info,
		      u32 expected_btypes,
		      u32 package_index,
		      union acpi_operand_object **return_object_ptr)
{
	union acpi_operand_object *return_object = *return_object_ptr;
	union acpi_operand_object *new_object = NULL;
	acpi_status status;
	const struct acpi_simple_repair_info *predefined;

	ACPI_FUNCTION_NAME(ns_simple_repair);

	/*
	 * Special repairs for certain names that are in the repair table.
	 * Check if this name is in the list of repairable names.
	 */
	predefined = acpi_ns_match_simple_repair(info->node,
						 info->return_btype,
						 package_index);
	if (predefined) {
		if (!return_object) {
			ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
					      ACPI_WARN_ALWAYS,
					      "Missing expected return value"));
		}

		status =
		    predefined->object_converter(return_object, &new_object);
		if (ACPI_FAILURE(status)) {

			/* A fatal error occurred during a conversion */

			ACPI_EXCEPTION((AE_INFO, status,
					"During return object analysis"));
			return (status);
		}
		if (new_object) {
			goto object_repaired;
		}
	}

	/*
	 * Do not perform simple object repair unless the return type is not
	 * expected.
	 */
	if (info->return_btype & expected_btypes) {
		return (AE_OK);
	}

	/*
	 * At this point, we know that the type of the returned object was not
	 * one of the expected types for this predefined name. Attempt to
	 * repair the object by converting it to one of the expected object
	 * types for this predefined name.
	 */

	/*
	 * If there is no return value, check if we require a return value for
	 * this predefined name. Either one return value is expected, or none,
	 * for both methods and other objects.
	 *
	 * Exit now if there is no return object. Warning if one was expected.
	 */
	if (!return_object) {
		if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) {
			ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
					      ACPI_WARN_ALWAYS,
					      "Missing expected return value"));

			return (AE_AML_NO_RETURN_VALUE);
		}
	}

	if (expected_btypes & ACPI_RTYPE_INTEGER) {
		status = acpi_ns_convert_to_integer(return_object, &new_object);
		if (ACPI_SUCCESS(status)) {
			goto object_repaired;
		}
	}
	if (expected_btypes & ACPI_RTYPE_STRING) {
		status = acpi_ns_convert_to_string(return_object, &new_object);
		if (ACPI_SUCCESS(status)) {
			goto object_repaired;
		}
	}
	if (expected_btypes & ACPI_RTYPE_BUFFER) {
		status = acpi_ns_convert_to_buffer(return_object, &new_object);
		if (ACPI_SUCCESS(status)) {
			goto object_repaired;
		}
	}
	if (expected_btypes & ACPI_RTYPE_PACKAGE) {
		/*
		 * A package is expected. We will wrap the existing object with a
		 * new package object. It is often the case that if a variable-length
		 * package is required, but there is only a single object needed, the
		 * BIOS will return that object instead of wrapping it with a Package
		 * object. Note: after the wrapping, the package will be validated
		 * for correct contents (expected object type or types).
		 */
		status =
		    acpi_ns_wrap_with_package(info, return_object, &new_object);
		if (ACPI_SUCCESS(status)) {
			/*
			 * The original object just had its reference count
			 * incremented for being inserted into the new package.
			 */
			*return_object_ptr = new_object;	/* New Package object */
			info->return_flags |= ACPI_OBJECT_REPAIRED;
			return (AE_OK);
		}
	}

	/* We cannot repair this object */

	return (AE_AML_OPERAND_TYPE);

      object_repaired:

	/* Object was successfully repaired */

	if (package_index != ACPI_NOT_PACKAGE_ELEMENT) {
		/*
		 * The original object is a package element. We need to
		 * decrement the reference count of the original object,
		 * for removing it from the package.
		 *
		 * However, if the original object was just wrapped with a
		 * package object as part of the repair, we don't need to
		 * change the reference count.
		 */
		if (!(info->return_flags & ACPI_OBJECT_WRAPPED)) {
			new_object->common.reference_count =
			    return_object->common.reference_count;

			if (return_object->common.reference_count > 1) {
				return_object->common.reference_count--;
			}
		}

		ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
				  "%s: Converted %s to expected %s at Package index %u\n",
				  info->full_pathname,
				  acpi_ut_get_object_type_name(return_object),
				  acpi_ut_get_object_type_name(new_object),
				  package_index));
	} else {
		ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
				  "%s: Converted %s to expected %s\n",
				  info->full_pathname,
				  acpi_ut_get_object_type_name(return_object),
				  acpi_ut_get_object_type_name(new_object)));
	}

	/* Delete old object, install the new return object */

	acpi_ut_remove_reference(return_object);
	*return_object_ptr = new_object;
	info->return_flags |= ACPI_OBJECT_REPAIRED;
	return (AE_OK);
}
Esempio n. 27
0
static ACPI_STATUS
AcpiDsInitOneObject (
    ACPI_HANDLE             ObjHandle,
    UINT32                  Level,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_INIT_WALK_INFO     *Info = (ACPI_INIT_WALK_INFO *) Context;
    ACPI_NAMESPACE_NODE     *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
    ACPI_OBJECT_TYPE        Type;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_ENTRY ();


    /*
     * We are only interested in NS nodes owned by the table that
     * was just loaded
     */
    if (Node->OwnerId != Info->OwnerId)
    {
        return (AE_OK);
    }

    Info->ObjectCount++;

    /* And even then, we are only interested in a few object types */

    Type = AcpiNsGetType (ObjHandle);

    switch (Type)
    {
    case ACPI_TYPE_REGION:

        Status = AcpiDsInitializeRegion (ObjHandle);
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status,
                "During Region initialization %p [%4.4s]",
                ObjHandle, AcpiUtGetNodeName (ObjHandle)));
        }

        Info->OpRegionCount++;
        break;


    case ACPI_TYPE_METHOD:

        Info->MethodCount++;
        break;


    case ACPI_TYPE_DEVICE:

        Info->DeviceCount++;
        break;


    default:
        break;
    }

    /*
     * We ignore errors from above, and always return OK, since
     * we don't want to abort the walk on a single error.
     */
    return (AE_OK);
}
Esempio n. 28
0
acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id)
{
	acpi_status status;
	acpi_thread_id this_thread_id;

	ACPI_FUNCTION_NAME(ut_acquire_mutex);

	if (mutex_id > ACPI_MAX_MUTEX) {
		return (AE_BAD_PARAMETER);
	}

	this_thread_id = acpi_os_get_thread_id();

#ifdef ACPI_MUTEX_DEBUG
	{
		u32 i;
		/*
		 * Mutex debug code, for internal debugging only.
		 *
		 * Deadlock prevention. Check if this thread owns any mutexes of value
		 * greater than or equal to this one. If so, the thread has violated
		 * the mutex ordering rule. This indicates a coding error somewhere in
		 * the ACPI subsystem code.
		 */
		for (i = mutex_id; i < ACPI_NUM_MUTEX; i++) {
			if (acpi_gbl_mutex_info[i].thread_id == this_thread_id) {
				if (i == mutex_id) {
					ACPI_ERROR((AE_INFO,
						    "Mutex [%s] already acquired by this thread [%u]",
						    acpi_ut_get_mutex_name
						    (mutex_id),
						    (u32)this_thread_id));

					return (AE_ALREADY_ACQUIRED);
				}

				ACPI_ERROR((AE_INFO,
					    "Invalid acquire order: Thread %u owns [%s], wants [%s]",
					    (u32)this_thread_id,
					    acpi_ut_get_mutex_name(i),
					    acpi_ut_get_mutex_name(mutex_id)));

				return (AE_ACQUIRE_DEADLOCK);
			}
		}
	}
#endif

	ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
			  "Thread %u attempting to acquire Mutex [%s]\n",
			  (u32)this_thread_id,
			  acpi_ut_get_mutex_name(mutex_id)));

	status = acpi_os_acquire_mutex(acpi_gbl_mutex_info[mutex_id].mutex,
				       ACPI_WAIT_FOREVER);
	if (ACPI_SUCCESS(status)) {
		ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
				  "Thread %u acquired Mutex [%s]\n",
				  (u32)this_thread_id,
				  acpi_ut_get_mutex_name(mutex_id)));

		acpi_gbl_mutex_info[mutex_id].use_count++;
		acpi_gbl_mutex_info[mutex_id].thread_id = this_thread_id;
	} else {
		ACPI_EXCEPTION((AE_INFO, status,
				"Thread %u could not acquire Mutex [0x%X]",
				(u32)this_thread_id, mutex_id));
	}

	return (status);
}
Esempio n. 29
0
acpi_status
acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc,
			  char *signature, u32 *table_index)
{
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE(tb_verify_temp_table);

	/* Validate the table */

	status = acpi_tb_validate_temp_table(table_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* If a particular signature is expected (DSDT/FACS), it must match */

	if (signature && !ACPI_COMPARE_NAME(&table_desc->signature, signature)) {
		ACPI_BIOS_ERROR((AE_INFO,
				 "Invalid signature 0x%X for ACPI table, expected [%s]",
				 table_desc->signature.integer, signature));
		status = AE_BAD_SIGNATURE;
		goto invalidate_and_exit;
	}

	if (acpi_gbl_enable_table_validation) {

		/* Verify the checksum */

		status =
		    acpi_tb_verify_checksum(table_desc->pointer,
					    table_desc->length);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
					"%4.4s 0x%8.8X%8.8X"
					" Attempted table install failed",
					acpi_ut_valid_nameseg(table_desc->
							      signature.
							      ascii) ?
					table_desc->signature.ascii : "????",
					ACPI_FORMAT_UINT64(table_desc->
							   address)));

			goto invalidate_and_exit;
		}

		/* Avoid duplications */

		if (table_index) {
			status =
			    acpi_tb_check_duplication(table_desc, table_index);
			if (ACPI_FAILURE(status)) {
				if (status != AE_CTRL_TERMINATE) {
					ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
							"%4.4s 0x%8.8X%8.8X"
							" Table is duplicated",
							acpi_ut_valid_nameseg
							(table_desc->signature.
							 ascii) ? table_desc->
							signature.
							ascii : "????",
							ACPI_FORMAT_UINT64
							(table_desc->address)));
				}

				goto invalidate_and_exit;
			}
		}

		table_desc->flags |= ACPI_TABLE_IS_VERIFIED;
	}

	return_ACPI_STATUS(status);

invalidate_and_exit:
	acpi_tb_invalidate_table(table_desc);
	return_ACPI_STATUS(status);
}
Esempio n. 30
0
ACPI_STATUS
AcpiNsRootInitialize (
    void)
{
    ACPI_STATUS                 Status;
    const ACPI_PREDEFINED_NAMES *InitVal = NULL;
    ACPI_NAMESPACE_NODE         *NewNode;
    ACPI_OPERAND_OBJECT         *ObjDesc;
    ACPI_STRING                 Val = NULL;


    ACPI_FUNCTION_TRACE (NsRootInitialize);


    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /*
     * The global root ptr is initially NULL, so a non-NULL value indicates
     * that AcpiNsRootInitialize() has already been called; just return.
     */
    if (AcpiGbl_RootNode)
    {
        Status = AE_OK;
        goto UnlockAndExit;
    }

    /*
     * Tell the rest of the subsystem that the root is initialized
     * (This is OK because the namespace is locked)
     */
    AcpiGbl_RootNode = &AcpiGbl_RootNodeStruct;

    /* Enter the pre-defined names in the name table */

    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
        "Entering predefined entries into namespace\n"));

    for (InitVal = AcpiGbl_PreDefinedNames; InitVal->Name; InitVal++)
    {
        /* _OSI is optional for now, will be permanent later */

        if (!strcmp (InitVal->Name, "_OSI") && !AcpiGbl_CreateOsiMethod)
        {
            continue;
        }

        Status = AcpiNsLookup (NULL, __UNCONST(InitVal->Name), InitVal->Type,
                        ACPI_IMODE_LOAD_PASS2, ACPI_NS_NO_UPSEARCH,
                        NULL, &NewNode);
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status,
                "Could not create predefined name %s",
                InitVal->Name));
            continue;
        }

        /*
         * Name entered successfully. If entry in PreDefinedNames[] specifies
         * an initial value, create the initial value.
         */
        if (InitVal->Val)
        {
            Status = AcpiOsPredefinedOverride (InitVal, &Val);
            if (ACPI_FAILURE (Status))
            {
                ACPI_ERROR ((AE_INFO,
                    "Could not override predefined %s",
                    InitVal->Name));
            }

            if (!Val)
            {
                Val = __UNCONST(InitVal->Val);
            }

            /*
             * Entry requests an initial value, allocate a
             * descriptor for it.
             */
            ObjDesc = AcpiUtCreateInternalObject (InitVal->Type);
            if (!ObjDesc)
            {
                Status = AE_NO_MEMORY;
                goto UnlockAndExit;
            }

            /*
             * Convert value string from table entry to
             * internal representation. Only types actually
             * used for initial values are implemented here.
             */
            switch (InitVal->Type)
            {
            case ACPI_TYPE_METHOD:

                ObjDesc->Method.ParamCount = (UINT8) ACPI_TO_INTEGER (Val);
                ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID;

#if defined (ACPI_ASL_COMPILER)

                /* Save the parameter count for the iASL compiler */

                NewNode->Value = ObjDesc->Method.ParamCount;
#else
                /* Mark this as a very SPECIAL method */

                ObjDesc->Method.InfoFlags = ACPI_METHOD_INTERNAL_ONLY;
                ObjDesc->Method.Dispatch.Implementation = AcpiUtOsiImplementation;
#endif
                break;

            case ACPI_TYPE_INTEGER:

                ObjDesc->Integer.Value = ACPI_TO_INTEGER (Val);
                break;

            case ACPI_TYPE_STRING:

                /* Build an object around the static string */

                ObjDesc->String.Length = (UINT32) strlen (Val);
                ObjDesc->String.Pointer = Val;
                ObjDesc->Common.Flags |= AOPOBJ_STATIC_POINTER;
                break;

            case ACPI_TYPE_MUTEX:

                ObjDesc->Mutex.Node = NewNode;
                ObjDesc->Mutex.SyncLevel = (UINT8) (ACPI_TO_INTEGER (Val) - 1);

                /* Create a mutex */

                Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex);
                if (ACPI_FAILURE (Status))
                {
                    AcpiUtRemoveReference (ObjDesc);
                    goto UnlockAndExit;
                }

                /* Special case for ACPI Global Lock */

                if (strcmp (InitVal->Name, "_GL_") == 0)
                {
                    AcpiGbl_GlobalLockMutex = ObjDesc;

                    /* Create additional counting semaphore for global lock */

                    Status = AcpiOsCreateSemaphore (
                                1, 0, &AcpiGbl_GlobalLockSemaphore);
                    if (ACPI_FAILURE (Status))
                    {
                        AcpiUtRemoveReference (ObjDesc);
                        goto UnlockAndExit;
                    }
                }
                break;

            default:

                ACPI_ERROR ((AE_INFO, "Unsupported initial type value 0x%X",
                    InitVal->Type));
                AcpiUtRemoveReference (ObjDesc);
                ObjDesc = NULL;
                continue;
            }

            /* Store pointer to value descriptor in the Node */

            Status = AcpiNsAttachObject (NewNode, ObjDesc,
                        ObjDesc->Common.Type);

            /* Remove local reference to the object */

            AcpiUtRemoveReference (ObjDesc);
        }
    }


UnlockAndExit:
    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);

    /* Save a handle to "_GPE", it is always present */

    if (ACPI_SUCCESS (Status))
    {
        Status = AcpiNsGetNode (NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
                    &AcpiGbl_FadtGpeDevice);
    }

    return_ACPI_STATUS (Status);
}