rscreate.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acresrc.h"
#include "acnamesp.h"

Include dependency graph for rscreate.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_RESOURCES

Functions
ACPI_STATUS	AcpiBufferToResource (UINT8 *AmlBuffer, UINT16 AmlBufferLength, ACPI_RESOURCE **ResourcePtr)
ACPI_STATUS	AcpiRsCreateResourceList (ACPI_OPERAND_OBJECT *AmlBuffer, ACPI_BUFFER *OutputBuffer)
ACPI_STATUS	AcpiRsCreatePciRoutingTable (ACPI_OPERAND_OBJECT *PackageObject, ACPI_BUFFER *OutputBuffer)
ACPI_STATUS	AcpiRsCreateAmlResources (ACPI_BUFFER *ResourceList, ACPI_BUFFER *OutputBuffer)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_RESOURCES

Definition at line 49 of file rscreate.c.

Function Documentation

AcpiBufferToResource()

ACPI_STATUS AcpiBufferToResource	(	UINT8 *	AmlBuffer,
		UINT16	AmlBufferLength,
		ACPI_RESOURCE **	ResourcePtr
	)

Definition at line 68 of file rscreate.c.

{
    ACPI_STATUS             Status;
    ACPI_SIZE               ListSizeNeeded;
    void                    *Resource;
    void                    *CurrentResourcePtr;
 
 
    ACPI_FUNCTION_TRACE (AcpiBufferToResource);
 
 
    /*
     * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag
     * is not required here.
     */
 
    /* Get the required length for the converted resource */
 
    Status = AcpiRsGetListLength (
        AmlBuffer, AmlBufferLength, &ListSizeNeeded);
    if (Status == AE_AML_NO_RESOURCE_END_TAG)
    {
        Status = AE_OK;
    }
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    /* Allocate a buffer for the converted resource */
 
    Resource = ACPI_ALLOCATE_ZEROED (ListSizeNeeded);
    CurrentResourcePtr = Resource;
    if (!Resource)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }
 
    /* Perform the AML-to-Resource conversion */
 
    Status = AcpiUtWalkAmlResources (NULL, AmlBuffer, AmlBufferLength,
        AcpiRsConvertAmlToResources, &CurrentResourcePtr);
    if (Status == AE_AML_NO_RESOURCE_END_TAG)
    {
        Status = AE_OK;
    }
    if (ACPI_FAILURE (Status))
    {
        ACPI_FREE (Resource);
    }
    else
    {
        *ResourcePtr = Resource;
    }
 
    return_ACPI_STATUS (Status);
}

Referenced by AcpiBufferToResource().

AcpiRsCreateAmlResources()

ACPI_STATUS AcpiRsCreateAmlResources	(	ACPI_BUFFER *	ResourceList,
		ACPI_BUFFER *	OutputBuffer
	)

Definition at line 462 of file rscreate.c.

{
    ACPI_STATUS             Status;
    ACPI_SIZE               AmlSizeNeeded = 0;
 
 
    ACPI_FUNCTION_TRACE (RsCreateAmlResources);
 
 
    /* Params already validated, no need to re-validate here */
 
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ResourceList Buffer = %p\n",
        ResourceList->Pointer));
 
    /* Get the buffer size needed for the AML byte stream */
 
    Status = AcpiRsGetAmlLength (
        ResourceList->Pointer, ResourceList->Length, &AmlSizeNeeded);
 
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n",
        (UINT32) AmlSizeNeeded, AcpiFormatException (Status)));
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    /* Validate/Allocate/Clear caller buffer */
 
    Status = AcpiUtInitializeBuffer (OutputBuffer, AmlSizeNeeded);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    /* Do the conversion */
 
    Status = AcpiRsConvertResourcesToAml (ResourceList->Pointer,
        AmlSizeNeeded, OutputBuffer->Pointer);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
        OutputBuffer->Pointer, (UINT32) OutputBuffer->Length));
    return_ACPI_STATUS (AE_OK);
}

Referenced by AcpiRsSetSrsMethodData().

AcpiRsCreatePciRoutingTable()

ACPI_STATUS AcpiRsCreatePciRoutingTable	(	ACPI_OPERAND_OBJECT *	PackageObject,
		ACPI_BUFFER *	OutputBuffer
	)

Definition at line 234 of file rscreate.c.

{
    UINT8                   *Buffer;
    ACPI_OPERAND_OBJECT     **TopObjectList;
    ACPI_OPERAND_OBJECT     **SubObjectList;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_SIZE               BufferSizeNeeded = 0;
    UINT32                  NumberOfElements;
    UINT32                  Index;
    ACPI_PCI_ROUTING_TABLE  *UserPrt;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_STATUS             Status;
    ACPI_BUFFER             PathBuffer;
 
 
    ACPI_FUNCTION_TRACE (RsCreatePciRoutingTable);
 
 
    /* Params already validated, so we don't re-validate here */
 
    /* Get the required buffer length */
 
    Status = AcpiRsGetPciRoutingTableLength (
        PackageObject,&BufferSizeNeeded);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "BufferSizeNeeded = %X\n",
        (UINT32) BufferSizeNeeded));
 
    /* Validate/Allocate/Clear caller buffer */
 
    Status = AcpiUtInitializeBuffer (OutputBuffer, BufferSizeNeeded);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    /*
     * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a
     * package that in turn contains an UINT64 Address, a UINT8 Pin,
     * a Name, and a UINT8 SourceIndex.
     */
    TopObjectList = PackageObject->Package.Elements;
    NumberOfElements = PackageObject->Package.Count;
    Buffer = OutputBuffer->Pointer;
    UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer);
 
    for (Index = 0; Index < NumberOfElements; Index++)
    {
        /*
         * Point UserPrt past this current structure
         *
         * NOTE: On the first iteration, UserPrt->Length will
         * be zero because we cleared the return buffer earlier
         */
        Buffer += UserPrt->Length;
        UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer);
 
        /*
         * Fill in the Length field with the information we have at this
         * point. The minus four is to subtract the size of the UINT8
         * Source[4] member because it is added below.
         */
        UserPrt->Length = (sizeof (ACPI_PCI_ROUTING_TABLE) - 4);
 
        /* Each subpackage must be of length 4 */
 
        if ((*TopObjectList)->Package.Count != 4)
        {
            ACPI_ERROR ((AE_INFO,
                "(PRT[%u]) Need package of length 4, found length %u",
                Index, (*TopObjectList)->Package.Count));
            return_ACPI_STATUS (AE_AML_PACKAGE_LIMIT);
        }
 
        /*
         * Dereference the subpackage.
         * The SubObjectList will now point to an array of the four IRQ
         * elements: [Address, Pin, Source, SourceIndex]
         */
        SubObjectList = (*TopObjectList)->Package.Elements;
 
        /* 1) First subobject: Dereference the PRT.Address */
 
        ObjDesc = SubObjectList[0];
        if (!ObjDesc || ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
        {
            ACPI_ERROR ((AE_INFO,
                "(PRT[%u].Address) Need Integer, found %s",
                Index, AcpiUtGetObjectTypeName (ObjDesc)));
            return_ACPI_STATUS (AE_BAD_DATA);
        }
 
        UserPrt->Address = ObjDesc->Integer.Value;
 
        /* 2) Second subobject: Dereference the PRT.Pin */
 
        ObjDesc = SubObjectList[1];
        if (!ObjDesc || ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
        {
            ACPI_ERROR ((AE_INFO, "(PRT[%u].Pin) Need Integer, found %s",
                Index, AcpiUtGetObjectTypeName (ObjDesc)));
            return_ACPI_STATUS (AE_BAD_DATA);
        }
 
        UserPrt->Pin = (UINT32) ObjDesc->Integer.Value;
 
        /*
         * 3) Third subobject: Dereference the PRT.SourceName
         * The name may be unresolved (slack mode), so allow a null object
         */
        ObjDesc = SubObjectList[2];
        if (ObjDesc)
        {
            switch (ObjDesc->Common.Type)
            {
            case ACPI_TYPE_LOCAL_REFERENCE:
 
                if (ObjDesc->Reference.Class != ACPI_REFCLASS_NAME)
                {
                    ACPI_ERROR ((AE_INFO,
                        "(PRT[%u].Source) Need name, found Reference Class 0x%X",
                        Index, ObjDesc->Reference.Class));
                    return_ACPI_STATUS (AE_BAD_DATA);
                }
 
                Node = ObjDesc->Reference.Node;
 
                /* Use *remaining* length of the buffer as max for pathname */
 
                PathBuffer.Length = OutputBuffer->Length -
                    (UINT32) ((UINT8 *) UserPrt->Source -
                    (UINT8 *) OutputBuffer->Pointer);
                PathBuffer.Pointer = UserPrt->Source;
 
                Status = AcpiNsHandleToPathname (
                    (ACPI_HANDLE) Node, &PathBuffer, FALSE);
                if (ACPI_FAILURE (Status))
                {
                    return_ACPI_STATUS (Status);
                }
 
                /* +1 to include null terminator */
 
                UserPrt->Length += (UINT32) strlen (UserPrt->Source) + 1;
                break;
 
            case ACPI_TYPE_STRING:
 
                strcpy (UserPrt->Source, ObjDesc->String.Pointer);
 
                /*
                 * Add to the Length field the length of the string
                 * (add 1 for terminator)
                 */
                UserPrt->Length += ObjDesc->String.Length + 1;
                break;
 
            case ACPI_TYPE_INTEGER:
                /*
                 * If this is a number, then the Source Name is NULL, since
                 * the entire buffer was zeroed out, we can leave this alone.
                 *
                 * Add to the Length field the length of the UINT32 NULL
                 */
                UserPrt->Length += sizeof (UINT32);
                break;
 
            default:
 
               ACPI_ERROR ((AE_INFO,
                   "(PRT[%u].Source) Need Ref/String/Integer, found %s",
                   Index, AcpiUtGetObjectTypeName (ObjDesc)));
               return_ACPI_STATUS (AE_BAD_DATA);
            }
        }
 
        /* Now align the current length */
 
        UserPrt->Length = (UINT32) ACPI_ROUND_UP_TO_64BIT (UserPrt->Length);
 
        /* 4) Fourth subobject: Dereference the PRT.SourceIndex */
 
        ObjDesc = SubObjectList[3];
        if (!ObjDesc || ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
        {
            ACPI_ERROR ((AE_INFO,
                "(PRT[%u].SourceIndex) Need Integer, found %s",
                Index, AcpiUtGetObjectTypeName (ObjDesc)));
            return_ACPI_STATUS (AE_BAD_DATA);
        }
 
        UserPrt->SourceIndex = (UINT32) ObjDesc->Integer.Value;
 
        /* Point to the next ACPI_OPERAND_OBJECT in the top level package */
 
        TopObjectList++;
    }
 
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
        OutputBuffer->Pointer, (UINT32) OutputBuffer->Length));
    return_ACPI_STATUS (AE_OK);
}

Referenced by AcpiRsGetPrtMethodData().

AcpiRsCreateResourceList()

ACPI_STATUS AcpiRsCreateResourceList	(	ACPI_OPERAND_OBJECT *	AmlBuffer,
		ACPI_BUFFER *	OutputBuffer
	)

Definition at line 151 of file rscreate.c.

{
 
    ACPI_STATUS             Status;
    UINT8                   *AmlStart;
    ACPI_SIZE               ListSizeNeeded = 0;
    UINT32                  AmlBufferLength;
    void                    *Resource;
 
 
    ACPI_FUNCTION_TRACE (RsCreateResourceList);
 
 
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AmlBuffer = %p\n",
        AmlBuffer));
 
    /* Params already validated, so we don't re-validate here */
 
    AmlBufferLength = AmlBuffer->Buffer.Length;
    AmlStart = AmlBuffer->Buffer.Pointer;
 
    /*
     * Pass the AmlBuffer into a module that can calculate
     * the buffer size needed for the linked list
     */
    Status = AcpiRsGetListLength (AmlStart, AmlBufferLength,
                &ListSizeNeeded);
 
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n",
        Status, (UINT32) ListSizeNeeded));
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    /* Validate/Allocate/Clear caller buffer */
 
    Status = AcpiUtInitializeBuffer (OutputBuffer, ListSizeNeeded);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    /* Do the conversion */
 
    Resource = OutputBuffer->Pointer;
    Status = AcpiUtWalkAmlResources (NULL, AmlStart, AmlBufferLength,
        AcpiRsConvertAmlToResources, &Resource);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
        OutputBuffer->Pointer, (UINT32) OutputBuffer->Length));
    return_ACPI_STATUS (AE_OK);
}

Referenced by AcpiRsGetAeiMethodData(), AcpiRsGetCrsMethodData(), AcpiRsGetMethodData(), and AcpiRsGetPrsMethodData().