+++ /dev/null
-/*******************************************************************************
- *
- * Module Name: rscreate - Create resource lists/tables
- *
- ******************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2017, 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.
- */
-
-#include "acpi.h"
-#include "accommon.h"
-#include "acresrc.h"
-#include "acnamesp.h"
-
-#define _COMPONENT ACPI_RESOURCES
- ACPI_MODULE_NAME ("rscreate")
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiBufferToResource
- *
- * PARAMETERS: AmlBuffer - Pointer to the resource byte stream
- * AmlBufferLength - Length of the AmlBuffer
- * ResourcePtr - Where the converted resource is returned
- *
- * RETURN: Status
- *
- * DESCRIPTION: Convert a raw AML buffer to a resource list
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiBufferToResource (
- UINT8 *AmlBuffer,
- UINT16 AmlBufferLength,
- ACPI_RESOURCE **ResourcePtr)
-{
- 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);
-}
-
-ACPI_EXPORT_SYMBOL (AcpiBufferToResource)
-
-
-/*******************************************************************************
- *
- * 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 (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);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiRsCreatePciRoutingTable
- *
- * PARAMETERS: PackageObject - Pointer to a package containing one
- * of more ACPI_OPERAND_OBJECTs
- * 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 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);
-
- /* +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);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiRsCreateAmlResources
- *
- * PARAMETERS: ResourceList - Pointer to the resource list buffer
- * OutputBuffer - Where the AML buffer is returned
- *
- * 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: Converts a list of device resources to an AML bytestream
- * to be used as input for the _SRS control method.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiRsCreateAmlResources (
- ACPI_BUFFER *ResourceList,
- ACPI_BUFFER *OutputBuffer)
-{
- 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);
-}
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