NetBSD-5.0.2/sys/dist/acpica/rscreate.c
/*******************************************************************************
*
* Module Name: rscreate - Create resource lists/tables
* $Revision: 1.4 $
*
******************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#define __RSCREATE_C__
#include "acpi.h"
#include "acresrc.h"
#include "amlcode.h"
#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
* ACPI_INTEGER 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 (ACPI_GET_OBJECT_TYPE (*TopObjectList) != ACPI_TYPE_PACKAGE)
{
ACPI_ERROR ((AE_INFO,
"(PRT[%X]) 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[%X]) Need package of length 4, found length %d",
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 (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_INTEGER)
{
UserPrt->Address = ObjDesc->Integer.Value;
}
else
{
ACPI_ERROR ((AE_INFO,
"(PRT[%X].Address) Need Integer, found %s",
Index, AcpiUtGetObjectTypeName (ObjDesc)));
return_ACPI_STATUS (AE_BAD_DATA);
}
/* 2) Second subobject: Dereference the PRT.Pin */
ObjDesc = SubObjectList[1];
if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_INTEGER)
{
UserPrt->Pin = (UINT32) ObjDesc->Integer.Value;
}
else
{
ACPI_ERROR ((AE_INFO,
"(PRT[%X].Pin) Need Integer, found %s",
Index, AcpiUtGetObjectTypeName (ObjDesc)));
return_ACPI_STATUS (AE_BAD_DATA);
}
/*
* 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 (ACPI_GET_OBJECT_TYPE (ObjDesc))
{
case ACPI_TYPE_LOCAL_REFERENCE:
if (ObjDesc->Reference.Opcode != AML_INT_NAMEPATH_OP)
{
ACPI_ERROR ((AE_INFO,
"(PRT[%X].Source) Need name, found reference op %X",
Index, ObjDesc->Reference.Opcode));
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[%X].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 (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_INTEGER)
{
UserPrt->SourceIndex = (UINT32) ObjDesc->Integer.Value;
}
else
{
ACPI_ERROR ((AE_INFO,
"(PRT[%X].SourceIndex) Need Integer, found %s",
Index, AcpiUtGetObjectTypeName (ObjDesc)));
return_ACPI_STATUS (AE_BAD_DATA);
}
/* 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);
}