| /******************************************************************************* |
| * |
| * Module Name: rscreate - Create resource lists/tables |
| * |
| ******************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, 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); |
| } |
