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/** @file
AML Resource Data Code Generation.
Copyright (c) 2020, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Glossary:
- Rd or RD - Resource Data
- Rds or RDS - Resource Data Small
- Rdl or RDL - Resource Data Large
**/
#include <AmlNodeDefines.h>
#include <CodeGen/AmlResourceDataCodeGen.h>
#include <AmlCoreInterface.h>
#include <AmlDefines.h>
#include <Api/AmlApiHelper.h>
#include <Tree/AmlNode.h>
#include <ResourceData/AmlResourceData.h>
/** If ParentNode is not NULL, append RdNode.
If NewRdNode is not NULL, update its value to RdNode.
@param [in] RdNode Newly created Resource Data node.
@param [in] ParentNode If not NULL, add the generated node
to the end of the variable list of
argument of the ParentNode, but
before the "End Tag" Resource Data.
Must be a BufferOpNode.
@param [out] NewRdNode If not NULL, update the its value to RdNode.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER Invalid parameter.
**/
STATIC
EFI_STATUS
EFIAPI
LinkRdNode (
IN AML_DATA_NODE * RdNode,
IN AML_OBJECT_NODE * ParentNode,
IN AML_DATA_NODE ** NewRdNode
)
{
EFI_STATUS Status;
EFI_STATUS Status1;
if (NewRdNode != NULL) {
*NewRdNode = RdNode;
}
// Add RdNode as the last element, but before the EndTag.
if (ParentNode != NULL) {
Status = AmlAppendRdNode (ParentNode, RdNode);
if (EFI_ERROR (Status)) {
ASSERT (0);
Status1 = AmlDeleteTree ((AML_NODE_HEADER*)RdNode);
ASSERT_EFI_ERROR (Status1);
// Return original error.
return Status;
}
}
return EFI_SUCCESS;
}
/** Code generation for the "Interrupt ()" ASL function.
This function creates a Resource Data element corresponding to the
"Interrupt ()" ASL function and stores it in an AML Data Node.
The Resource Data effectively created is an Extended Interrupt Resource
Data. See ACPI 6.3 specification, s6.4.3.6 "Extended Interrupt Descriptor"
for more information about Extended Interrupt Resource Data.
This function allocates memory to create a data node. It is the caller's
responsibility to either:
- attach this node to an AML tree;
- delete this node.
@param [in] ResourceConsumer The device consumes the specified interrupt
or produces it for use by a child device.
@param [in] EdgeTriggered The interrupt is edge triggered or
level triggered.
@param [in] ActiveLow The interrupt is active-high or active-low.
@param [in] Shared The interrupt can be shared with other
devices or not (Exclusive).
@param [in] IrqList Interrupt list. Must be non-NULL.
@param [in] IrqCount Interrupt count. Must be non-zero.
@param [in] ParentNode If not NULL, add the generated node
to the end of the variable list of
argument of the ParentNode, but
before the "End Tag" Resource Data.
Must be a BufferOpNode.
@param [out] NewRdNode If success, contains the generated node.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_OUT_OF_RESOURCES Could not allocate memory.
**/
EFI_STATUS
EFIAPI
AmlCodeGenInterrupt (
IN BOOLEAN ResourceConsumer,
IN BOOLEAN EdgeTriggered,
IN BOOLEAN ActiveLow,
IN BOOLEAN Shared,
IN UINT32 * IrqList,
IN UINT8 IrqCount,
IN AML_OBJECT_NODE * ParentNode, OPTIONAL
OUT AML_DATA_NODE ** NewRdNode OPTIONAL
)
{
EFI_STATUS Status;
AML_DATA_NODE * RdNode;
EFI_ACPI_EXTENDED_INTERRUPT_DESCRIPTOR RdInterrupt;
UINT32 * FirstInterrupt;
if ((IrqList == NULL) ||
(IrqCount == 0) ||
((ParentNode == NULL) && (NewRdNode == NULL))) {
ASSERT (0);
return EFI_INVALID_PARAMETER;
}
RdInterrupt.Header.Header.Bits.Name =
ACPI_LARGE_EXTENDED_IRQ_DESCRIPTOR_NAME;
RdInterrupt.Header.Header.Bits.Type = ACPI_LARGE_ITEM_FLAG;
RdInterrupt.Header.Length = sizeof (EFI_ACPI_EXTENDED_INTERRUPT_DESCRIPTOR) -
sizeof (ACPI_LARGE_RESOURCE_HEADER);
RdInterrupt.InterruptVectorFlags = (ResourceConsumer ? BIT0 : 0) |
(EdgeTriggered ? BIT1 : 0) |
(ActiveLow ? BIT2 : 0) |
(Shared ? BIT3 : 0);
RdInterrupt.InterruptTableLength = IrqCount;
// Get the address of the first interrupt field.
FirstInterrupt = RdInterrupt.InterruptNumber;
// Copy the list of interrupts.
CopyMem (FirstInterrupt, IrqList, (sizeof (UINT32) * IrqCount));
Status = AmlCreateDataNode (
EAmlNodeDataTypeResourceData,
(UINT8*)&RdInterrupt,
sizeof (EFI_ACPI_EXTENDED_INTERRUPT_DESCRIPTOR),
&RdNode
);
if (EFI_ERROR (Status)) {
ASSERT (0);
return Status;
}
return LinkRdNode (RdNode, ParentNode, NewRdNode);
}
/** Add an Interrupt Resource Data node.
This function creates a Resource Data element corresponding to the
"Interrupt ()" ASL function, stores it in an AML Data Node.
It then adds it after the input CurrRdNode in the list of resource data
element.
The Resource Data effectively created is an Extended Interrupt Resource
Data. See ACPI 6.3 specification, s6.4.3.6 "Extended Interrupt Descriptor"
for more information about Extended Interrupt Resource Data.
The Extended Interrupt contains one single interrupt.
This function allocates memory to create a data node. It is the caller's
responsibility to either:
- attach this node to an AML tree;
- delete this node.
Note: The _CRS node must be defined using the ASL Name () function.
e.g. Name (_CRS, ResourceTemplate () {
...
}
@param [in] NameOpCrsNode NameOp object node defining a "_CRS" object.
Must have an OpCode=AML_NAME_OP, SubOpCode=0.
NameOp object nodes are defined in ASL
using the "Name ()" function.
@param [in] ResourceConsumer The device consumes the specified interrupt
or produces it for use by a child device.
@param [in] EdgeTriggered The interrupt is edge triggered or
level triggered.
@param [in] ActiveLow The interrupt is active-high or active-low.
@param [in] Shared The interrupt can be shared with other
devices or not (Exclusive).
@param [in] IrqList Interrupt list. Must be non-NULL.
@param [in] IrqCount Interrupt count. Must be non-zero.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_OUT_OF_RESOURCES Could not allocate memory.
**/
EFI_STATUS
EFIAPI
AmlCodeGenCrsAddRdInterrupt (
IN AML_OBJECT_NODE_HANDLE NameOpCrsNode,
IN BOOLEAN ResourceConsumer,
IN BOOLEAN EdgeTriggered,
IN BOOLEAN ActiveLow,
IN BOOLEAN Shared,
IN UINT32 * IrqList,
IN UINT8 IrqCount
)
{
EFI_STATUS Status;
AML_OBJECT_NODE_HANDLE BufferOpNode;
if ((IrqList == NULL) ||
(IrqCount == 0) ||
(!AmlNodeHasOpCode (NameOpCrsNode, AML_NAME_OP, 0)) ||
(!AmlNameOpCompareName (NameOpCrsNode, "_CRS"))) {
ASSERT (0);
return EFI_INVALID_PARAMETER;
}
// Get the _CRS value which is represented as a BufferOp object node
// which is the 2nd fixed argument (i.e. index 1).
BufferOpNode = (AML_OBJECT_NODE_HANDLE)AmlGetFixedArgument (
NameOpCrsNode,
EAmlParseIndexTerm1
);
if ((BufferOpNode == NULL) ||
(AmlGetNodeType ((AML_NODE_HANDLE)BufferOpNode) != EAmlNodeObject) ||
(!AmlNodeHasOpCode (BufferOpNode, AML_BUFFER_OP, 0))) {
ASSERT (0);
return EFI_INVALID_PARAMETER;
}
// Generate the Extended Interrupt Resource Data node,
// and attach it as the last variable argument of the BufferOpNode.
Status = AmlCodeGenInterrupt (
ResourceConsumer,
EdgeTriggered,
ActiveLow,
Shared,
IrqList,
IrqCount,
BufferOpNode,
NULL
);
if (EFI_ERROR (Status)) {
ASSERT (0);
}
return Status;
}
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