static void
AcpiDmAddResourcesToNamespace (
ACPI_NAMESPACE_NODE *BufferNode,
ACPI_PARSE_OBJECT *Op)
{
ACPI_PARSE_OBJECT *NextOp;
/* Get to the ByteData list */
NextOp = Op->Common.Value.Arg;
NextOp = NextOp->Common.Next;
if (!NextOp)
{
return;
}
/* Set Node and Op to point to each other */
BufferNode->Op = Op;
Op->Common.Node = BufferNode;
/*
* Insert each resource into the namespace
* NextOp contains the Aml pointer and the Aml length
*/
AcpiUtWalkAmlResources (NULL, (UINT8 *) NextOp->Named.Data,
(ACPI_SIZE) NextOp->Common.Value.Integer,
AcpiDmAddResourceToNamespace, (void **) BufferNode);
}
ACPI_STATUS
AcpiRsCreateResourceList (
ACPI_OPERAND_OBJECT *AmlBuffer,
ACPI_BUFFER *OutputBuffer)
{
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);
}
ACPI_STATUS
AcpiBufferToResource (
UINT8 *AmlBuffer,
UINT16 AmlBufferLength,
ACPI_RESOURCE **ResourcePtr)
{
ACPI_STATUS Status;
ACPI_SIZE ListSizeNeeded;
void *Resource;
void *CurrentResourcePtr;
/*
* 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 (Status);
}
/* Allocate a buffer for the converted resource */
Resource = ACPI_ALLOCATE_ZEROED (ListSizeNeeded);
CurrentResourcePtr = Resource;
if (!Resource)
{
return (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 (Status);
}
ACPI_STATUS
AcpiDmIsResourceTemplate (
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_PARSE_OBJECT *NextOp;
UINT8 *Aml;
UINT8 *EndAml;
ACPI_SIZE Length;
/* This op must be a buffer */
if (Op->Common.AmlOpcode != AML_BUFFER_OP)
{
return (AE_TYPE);
}
/* Get the ByteData list and length */
NextOp = Op->Common.Value.Arg;
NextOp = NextOp->Common.Next;
if (!NextOp)
{
return (AE_TYPE);
}
Aml = NextOp->Named.Data;
Length = (ACPI_SIZE) NextOp->Common.Value.Integer;
/* Walk the byte list, abort on any invalid descriptor type or length */
Status = AcpiUtWalkAmlResources (Aml, Length, NULL, &EndAml);
if (ACPI_FAILURE (Status))
{
return (AE_TYPE);
}
/*
* For the resource template to be valid, one EndTag must appear
* at the very end of the ByteList, not before. (For proper disassembly
* of a ResourceTemplate, the buffer must not have any extra data after
* the EndTag.)
*/
if ((Aml + Length - sizeof (AML_RESOURCE_END_TAG)) != EndAml)
{
return (AE_AML_NO_RESOURCE_END_TAG);
}
/*
* All resource descriptors are valid, therefore this list appears
* to be a valid resource template
*/
return (AE_OK);
}
