utids.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acinterp.h"

Include dependency graph for utids.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_UTILITIES

Functions
ACPI_STATUS	AcpiUtExecute_HID (ACPI_NAMESPACE_NODE *DeviceNode, ACPI_PNP_DEVICE_ID **ReturnId)
ACPI_STATUS	AcpiUtExecute_UID (ACPI_NAMESPACE_NODE *DeviceNode, ACPI_PNP_DEVICE_ID **ReturnId)
ACPI_STATUS	AcpiUtExecute_CID (ACPI_NAMESPACE_NODE *DeviceNode, ACPI_PNP_DEVICE_ID_LIST **ReturnCidList)
ACPI_STATUS	AcpiUtExecute_CLS (ACPI_NAMESPACE_NODE *DeviceNode, ACPI_PNP_DEVICE_ID **ReturnId)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_UTILITIES

Definition at line 49 of file utids.c.

Function Documentation

AcpiUtExecute_CID()

ACPI_STATUS AcpiUtExecute_CID	(	ACPI_NAMESPACE_NODE *	DeviceNode,
		ACPI_PNP_DEVICE_ID_LIST **	ReturnCidList
	)

Definition at line 253 of file utids.c.

{
    ACPI_OPERAND_OBJECT     **CidObjects;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_PNP_DEVICE_ID_LIST *CidList;
    char                    *NextIdString;
    UINT32                  StringAreaSize;
    UINT32                  Length;
    UINT32                  CidListSize;
    ACPI_STATUS             Status;
    UINT32                  Count;
    UINT32                  i;


    ACPI_FUNCTION_TRACE (UtExecute_CID);


    /* Evaluate the _CID method for this device */

    Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__CID,
        ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_PACKAGE,
        &ObjDesc);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /*
     * Get the count and size of the returned _CIDs. _CID can return either
     * a Package of Integers/Strings or a single Integer or String.
     * Note: This section also validates that all CID elements are of the
     * correct type (Integer or String).
     */
    if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE)
    {
        Count = ObjDesc->Package.Count;
        CidObjects = ObjDesc->Package.Elements;
    }
    else /* Single Integer or String CID */
    {
        Count = 1;
        CidObjects = &ObjDesc;
    }

    StringAreaSize = 0;
    for (i = 0; i < Count; i++)
    {
        /* String lengths include null terminator */

        switch (CidObjects[i]->Common.Type)
        {
        case ACPI_TYPE_INTEGER:

            StringAreaSize += ACPI_EISAID_STRING_SIZE;
            break;

        case ACPI_TYPE_STRING:

            StringAreaSize += CidObjects[i]->String.Length + 1;
            break;

        default:

            Status = AE_TYPE;
            goto Cleanup;
        }
    }

    /*
     * Now that we know the length of the CIDs, allocate return buffer:
     * 1) Size of the base structure +
     * 2) Size of the CID PNP_DEVICE_ID array +
     * 3) Size of the actual CID strings
     */
    CidListSize = sizeof (ACPI_PNP_DEVICE_ID_LIST) +
        ((Count - 1) * sizeof (ACPI_PNP_DEVICE_ID)) +
        StringAreaSize;

    CidList = ACPI_ALLOCATE_ZEROED (CidListSize);
    if (!CidList)
    {
        Status = AE_NO_MEMORY;
        goto Cleanup;
    }

    /* Area for CID strings starts after the CID PNP_DEVICE_ID array */

    NextIdString = ACPI_CAST_PTR (char, CidList->Ids) +
        ((ACPI_SIZE) Count * sizeof (ACPI_PNP_DEVICE_ID));

    /* Copy/convert the CIDs to the return buffer */

    for (i = 0; i < Count; i++)
    {
        if (CidObjects[i]->Common.Type == ACPI_TYPE_INTEGER)
        {
            /* Convert the Integer (EISAID) CID to a string */

            AcpiExEisaIdToString (
                NextIdString, CidObjects[i]->Integer.Value);
            Length = ACPI_EISAID_STRING_SIZE;
        }
        else /* ACPI_TYPE_STRING */
        {
            /* Copy the String CID from the returned object */

            strcpy (NextIdString, CidObjects[i]->String.Pointer);
            Length = CidObjects[i]->String.Length + 1;
        }

        CidList->Ids[i].String = NextIdString;
        CidList->Ids[i].Length = Length;
        NextIdString += Length;
    }

    /* Finish the CID list */

    CidList->Count = Count;
    CidList->ListSize = CidListSize;
    *ReturnCidList = CidList;


Cleanup:

    /* On exit, we must delete the _CID return object */

    AcpiUtRemoveReference (ObjDesc);
    return_ACPI_STATUS (Status);
}

Referenced by AcpiEvIsPciRootBridge(), AcpiGetObjectInfo(), and AcpiNsGetDeviceCallback().

AcpiUtExecute_CLS()

ACPI_STATUS AcpiUtExecute_CLS	(	ACPI_NAMESPACE_NODE *	DeviceNode,
		ACPI_PNP_DEVICE_ID **	ReturnId
	)

Definition at line 406 of file utids.c.

{
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     **ClsObjects;
    UINT32                  Count;
    ACPI_PNP_DEVICE_ID      *Cls;
    UINT32                  Length;
    ACPI_STATUS             Status;
    UINT8                   ClassCode[3] = {0, 0, 0};


    ACPI_FUNCTION_TRACE (UtExecute_CLS);


    Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__CLS,
        ACPI_BTYPE_PACKAGE, &ObjDesc);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Get the size of the String to be returned, includes null terminator */

    Length = ACPI_PCICLS_STRING_SIZE;
    ClsObjects = ObjDesc->Package.Elements;
    Count = ObjDesc->Package.Count;

    if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE)
    {
        if (Count > 0 && ClsObjects[0]->Common.Type == ACPI_TYPE_INTEGER)
        {
            ClassCode[0] = (UINT8) ClsObjects[0]->Integer.Value;
        }
        if (Count > 1 && ClsObjects[1]->Common.Type == ACPI_TYPE_INTEGER)
        {
            ClassCode[1] = (UINT8) ClsObjects[1]->Integer.Value;
        }
        if (Count > 2 && ClsObjects[2]->Common.Type == ACPI_TYPE_INTEGER)
        {
            ClassCode[2] = (UINT8) ClsObjects[2]->Integer.Value;
        }
    }

    /* Allocate a buffer for the CLS */

    Cls = ACPI_ALLOCATE_ZEROED (
        sizeof (ACPI_PNP_DEVICE_ID) + (ACPI_SIZE) Length);
    if (!Cls)
    {
        Status = AE_NO_MEMORY;
        goto Cleanup;
    }

    /* Area for the string starts after PNP_DEVICE_ID struct */

    Cls->String = ACPI_ADD_PTR (char, Cls, sizeof (ACPI_PNP_DEVICE_ID));

    /* Simply copy existing string */

    AcpiExPciClsToString (Cls->String, ClassCode);
    Cls->Length = Length;
    *ReturnId = Cls;


Cleanup:

    /* On exit, we must delete the return object */

    AcpiUtRemoveReference (ObjDesc);
    return_ACPI_STATUS (Status);
}

Referenced by AcpiGetObjectInfo().

AcpiUtExecute_HID()

ACPI_STATUS AcpiUtExecute_HID	(	ACPI_NAMESPACE_NODE *	DeviceNode,
		ACPI_PNP_DEVICE_ID **	ReturnId
	)

Definition at line 72 of file utids.c.

{
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_PNP_DEVICE_ID      *Hid;
    UINT32                  Length;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (UtExecute_HID);


    Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__HID,
        ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Get the size of the String to be returned, includes null terminator */

    if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
    {
        Length = ACPI_EISAID_STRING_SIZE;
    }
    else
    {
        Length = ObjDesc->String.Length + 1;
    }

    /* Allocate a buffer for the HID */

    Hid = ACPI_ALLOCATE_ZEROED (
        sizeof (ACPI_PNP_DEVICE_ID) + (ACPI_SIZE) Length);
    if (!Hid)
    {
        Status = AE_NO_MEMORY;
        goto Cleanup;
    }

    /* Area for the string starts after PNP_DEVICE_ID struct */

    Hid->String = ACPI_ADD_PTR (char, Hid, sizeof (ACPI_PNP_DEVICE_ID));

    /* Convert EISAID to a string or simply copy existing string */

    if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
    {
        AcpiExEisaIdToString (Hid->String, ObjDesc->Integer.Value);
    }
    else
    {
        strcpy (Hid->String, ObjDesc->String.Pointer);
    }

    Hid->Length = Length;
    *ReturnId = Hid;


Cleanup:

    /* On exit, we must delete the return object */

    AcpiUtRemoveReference (ObjDesc);
    return_ACPI_STATUS (Status);
}

Referenced by AcpiEvIsPciRootBridge(), AcpiGetObjectInfo(), and AcpiNsGetDeviceCallback().

AcpiUtExecute_UID()

ACPI_STATUS AcpiUtExecute_UID	(	ACPI_NAMESPACE_NODE *	DeviceNode,
		ACPI_PNP_DEVICE_ID **	ReturnId
	)

Definition at line 160 of file utids.c.

{
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_PNP_DEVICE_ID      *Uid;
    UINT32                  Length;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (UtExecute_UID);


    Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__UID,
        ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Get the size of the String to be returned, includes null terminator */

    if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
    {
        Length = ACPI_MAX64_DECIMAL_DIGITS + 1;
    }
    else
    {
        Length = ObjDesc->String.Length + 1;
    }

    /* Allocate a buffer for the UID */

    Uid = ACPI_ALLOCATE_ZEROED (
        sizeof (ACPI_PNP_DEVICE_ID) + (ACPI_SIZE) Length);
    if (!Uid)
    {
        Status = AE_NO_MEMORY;
        goto Cleanup;
    }

    /* Area for the string starts after PNP_DEVICE_ID struct */

    Uid->String = ACPI_ADD_PTR (char, Uid, sizeof (ACPI_PNP_DEVICE_ID));

    /* Convert an Integer to string, or just copy an existing string */

    if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
    {
        AcpiExIntegerToString (Uid->String, ObjDesc->Integer.Value);
    }
    else
    {
        strcpy (Uid->String, ObjDesc->String.Pointer);
    }

    Uid->Length = Length;
    *ReturnId = Uid;


Cleanup:

    /* On exit, we must delete the return object */

    AcpiUtRemoveReference (ObjDesc);
    return_ACPI_STATUS (Status);
}

Referenced by AcpiGetObjectInfo().