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/*******************************************************************************
*
* Module Name: rscreate - Create resource lists/tables
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2011, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#define __RSCREATE_C__
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acresrc.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME ("rscreate")
/*******************************************************************************
*
* FUNCTION: AcpiRsCreateResourceList
*
* PARAMETERS: AmlBuffer - Pointer to the resource byte stream
* OutputBuffer - Pointer to the user's buffer
*
* RETURN: Status: AE_OK if okay, else a valid ACPI_STATUS code
* If OutputBuffer is not large enough, OutputBufferLength
* indicates how large OutputBuffer should be, else it
* indicates how may UINT8 elements of OutputBuffer are valid.
*
* DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method
* execution and parses the stream to create a linked list
* of device resources.
*
******************************************************************************/
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 (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);
}
/*******************************************************************************
*
* FUNCTION: AcpiRsCreatePciRoutingTable
*
* PARAMETERS: PackageObject - Pointer to an ACPI_OPERAND_OBJECT
* package
* OutputBuffer - Pointer to the user's buffer
*
* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code.
* If the OutputBuffer is too small, the error will be
* AE_BUFFER_OVERFLOW and OutputBuffer->Length will point
* to the size buffer needed.
*
* DESCRIPTION: Takes the ACPI_OPERAND_OBJECT package and creates a
* linked list of PCI interrupt descriptions
*
* NOTE: It is the caller's responsibility to ensure that the start of the
* output buffer is aligned properly (if necessary).
*
******************************************************************************/
ACPI_STATUS
AcpiRsCreatePciRoutingTable (
ACPI_OPERAND_OBJECT *PackageObject,
ACPI_BUFFER *OutputBuffer)
{
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 element of the top-level package must also be a package */
if ((*TopObjectList)->Common.Type != ACPI_TYPE_PACKAGE)
{
ACPI_ERROR ((AE_INFO,
"(PRT[%u]) Need sub-package, found %s",
Index, AcpiUtGetObjectTypeName (*TopObjectList)));
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Each sub-package 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 sub-package.
* 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->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->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;
/*
* If the BIOS has erroneously reversed the _PRT SourceName (index 2)
* and the SourceIndex (index 3), fix it. _PRT is important enough to
* workaround this BIOS error. This also provides compatibility with
* other ACPI implementations.
*/
ObjDesc = SubObjectList[3];
if (!ObjDesc || (ObjDesc->Common.Type != ACPI_TYPE_INTEGER))
{
SubObjectList[3] = SubObjectList[2];
SubObjectList[2] = ObjDesc;
ACPI_WARNING ((AE_INFO,
"(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed",
Index));
}
/*
* 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);
/* +1 to include null terminator */
UserPrt->Length += (UINT32) ACPI_STRLEN (UserPrt->Source) + 1;
break;
case ACPI_TYPE_STRING:
ACPI_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->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);
}
/*******************************************************************************
*
* FUNCTION: AcpiRsCreateAmlResources
*
* PARAMETERS: LinkedListBuffer - Pointer to the resource linked list
* OutputBuffer - Pointer to the user's buffer
*
* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code.
* If the OutputBuffer is too small, the error will be
* AE_BUFFER_OVERFLOW and OutputBuffer->Length will point
* to the size buffer needed.
*
* DESCRIPTION: Takes the linked list of device resources and
* creates a bytestream to be used as input for the
* _SRS control method.
*
******************************************************************************/
ACPI_STATUS
AcpiRsCreateAmlResources (
ACPI_RESOURCE *LinkedListBuffer,
ACPI_BUFFER *OutputBuffer)
{
ACPI_STATUS Status;
ACPI_SIZE AmlSizeNeeded = 0;
ACPI_FUNCTION_TRACE (RsCreateAmlResources);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "LinkedListBuffer = %p\n",
LinkedListBuffer));
/*
* Params already validated, so we don't re-validate here
*
* Pass the LinkedListBuffer into a module that calculates
* the buffer size needed for the byte stream.
*/
Status = AcpiRsGetAmlLength (LinkedListBuffer,
&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 (LinkedListBuffer, 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);
}