| /******************************************************************************* |
| * |
| * Module Name: rscalc - Calculate stream and list lengths |
| * |
| ******************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2022, 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 MERCHANTABILITY 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 ("rscalc") |
| |
| |
| /* Local prototypes */ |
| |
| static UINT8 |
| AcpiRsCountSetBits ( |
| UINT16 BitField); |
| |
| static ACPI_RS_LENGTH |
| AcpiRsStructOptionLength ( |
| ACPI_RESOURCE_SOURCE *ResourceSource); |
| |
| static UINT32 |
| AcpiRsStreamOptionLength ( |
| UINT32 ResourceLength, |
| UINT32 MinimumTotalLength); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsCountSetBits |
| * |
| * PARAMETERS: BitField - Field in which to count bits |
| * |
| * RETURN: Number of bits set within the field |
| * |
| * DESCRIPTION: Count the number of bits set in a resource field. Used for |
| * (Short descriptor) interrupt and DMA lists. |
| * |
| ******************************************************************************/ |
| |
| static UINT8 |
| AcpiRsCountSetBits ( |
| UINT16 BitField) |
| { |
| UINT8 BitsSet; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| for (BitsSet = 0; BitField; BitsSet++) |
| { |
| /* Zero the least significant bit that is set */ |
| |
| BitField &= (UINT16) (BitField - 1); |
| } |
| |
| return (BitsSet); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsStructOptionLength |
| * |
| * PARAMETERS: ResourceSource - Pointer to optional descriptor field |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Common code to handle optional ResourceSourceIndex and |
| * ResourceSource fields in some Large descriptors. Used during |
| * list-to-stream conversion |
| * |
| ******************************************************************************/ |
| |
| static ACPI_RS_LENGTH |
| AcpiRsStructOptionLength ( |
| ACPI_RESOURCE_SOURCE *ResourceSource) |
| { |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* |
| * If the ResourceSource string is valid, return the size of the string |
| * (StringLength includes the NULL terminator) plus the size of the |
| * ResourceSourceIndex (1). |
| */ |
| if (ResourceSource->StringPtr) |
| { |
| return ((ACPI_RS_LENGTH) (ResourceSource->StringLength + 1)); |
| } |
| |
| return (0); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsStreamOptionLength |
| * |
| * PARAMETERS: ResourceLength - Length from the resource header |
| * MinimumTotalLength - Minimum length of this resource, before |
| * any optional fields. Includes header size |
| * |
| * RETURN: Length of optional string (0 if no string present) |
| * |
| * DESCRIPTION: Common code to handle optional ResourceSourceIndex and |
| * ResourceSource fields in some Large descriptors. Used during |
| * stream-to-list conversion |
| * |
| ******************************************************************************/ |
| |
| static UINT32 |
| AcpiRsStreamOptionLength ( |
| UINT32 ResourceLength, |
| UINT32 MinimumAmlResourceLength) |
| { |
| UINT32 StringLength = 0; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* |
| * The ResourceSourceIndex and ResourceSource are optional elements of |
| * some Large-type resource descriptors. |
| */ |
| |
| /* |
| * If the length of the actual resource descriptor is greater than the |
| * ACPI spec-defined minimum length, it means that a ResourceSourceIndex |
| * exists and is followed by a (required) null terminated string. The |
| * string length (including the null terminator) is the resource length |
| * minus the minimum length, minus one byte for the ResourceSourceIndex |
| * itself. |
| */ |
| if (ResourceLength > MinimumAmlResourceLength) |
| { |
| /* Compute the length of the optional string */ |
| |
| StringLength = ResourceLength - MinimumAmlResourceLength - 1; |
| } |
| |
| /* |
| * Round the length up to a multiple of the native word in order to |
| * guarantee that the entire resource descriptor is native word aligned |
| */ |
| return ((UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (StringLength)); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsGetAmlLength |
| * |
| * PARAMETERS: Resource - Pointer to the resource linked list |
| * ResourceListSize - Size of the resource linked list |
| * SizeNeeded - Where the required size is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Takes a linked list of internal resource descriptors and |
| * calculates the size buffer needed to hold the corresponding |
| * external resource byte stream. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiRsGetAmlLength ( |
| ACPI_RESOURCE *Resource, |
| ACPI_SIZE ResourceListSize, |
| ACPI_SIZE *SizeNeeded) |
| { |
| ACPI_SIZE AmlSizeNeeded = 0; |
| ACPI_RESOURCE *ResourceEnd; |
| ACPI_RS_LENGTH TotalSize; |
| |
| |
| ACPI_FUNCTION_TRACE (RsGetAmlLength); |
| |
| |
| /* Traverse entire list of internal resource descriptors */ |
| |
| ResourceEnd = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, ResourceListSize); |
| while (Resource < ResourceEnd) |
| { |
| /* Validate the descriptor type */ |
| |
| if (Resource->Type > ACPI_RESOURCE_TYPE_MAX) |
| { |
| return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE); |
| } |
| |
| /* Sanity check the length. It must not be zero, or we loop forever */ |
| |
| if (!Resource->Length) |
| { |
| return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH); |
| } |
| |
| /* Get the base size of the (external stream) resource descriptor */ |
| |
| TotalSize = AcpiGbl_AmlResourceSizes [Resource->Type]; |
| |
| /* |
| * Augment the base size for descriptors with optional and/or |
| * variable-length fields |
| */ |
| switch (Resource->Type) |
| { |
| case ACPI_RESOURCE_TYPE_IRQ: |
| |
| /* Length can be 3 or 2 */ |
| |
| if (Resource->Data.Irq.DescriptorLength == 2) |
| { |
| TotalSize--; |
| } |
| break; |
| |
| |
| case ACPI_RESOURCE_TYPE_START_DEPENDENT: |
| |
| /* Length can be 1 or 0 */ |
| |
| if (Resource->Data.Irq.DescriptorLength == 0) |
| { |
| TotalSize--; |
| } |
| break; |
| |
| |
| case ACPI_RESOURCE_TYPE_VENDOR: |
| /* |
| * Vendor Defined Resource: |
| * For a Vendor Specific resource, if the Length is between 1 and 7 |
| * it will be created as a Small Resource data type, otherwise it |
| * is a Large Resource data type. |
| */ |
| if (Resource->Data.Vendor.ByteLength > 7) |
| { |
| /* Base size of a Large resource descriptor */ |
| |
| TotalSize = sizeof (AML_RESOURCE_LARGE_HEADER); |
| } |
| |
| /* Add the size of the vendor-specific data */ |
| |
| TotalSize = (ACPI_RS_LENGTH) |
| (TotalSize + Resource->Data.Vendor.ByteLength); |
| break; |
| |
| |
| case ACPI_RESOURCE_TYPE_END_TAG: |
| /* |
| * End Tag: |
| * We are done -- return the accumulated total size. |
| */ |
| *SizeNeeded = AmlSizeNeeded + TotalSize; |
| |
| /* Normal exit */ |
| |
| return_ACPI_STATUS (AE_OK); |
| |
| |
| case ACPI_RESOURCE_TYPE_ADDRESS16: |
| /* |
| * 16-Bit Address Resource: |
| * Add the size of the optional ResourceSource info |
| */ |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| AcpiRsStructOptionLength ( |
| &Resource->Data.Address16.ResourceSource)); |
| break; |
| |
| |
| case ACPI_RESOURCE_TYPE_ADDRESS32: |
| /* |
| * 32-Bit Address Resource: |
| * Add the size of the optional ResourceSource info |
| */ |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| AcpiRsStructOptionLength ( |
| &Resource->Data.Address32.ResourceSource)); |
| break; |
| |
| |
| case ACPI_RESOURCE_TYPE_ADDRESS64: |
| /* |
| * 64-Bit Address Resource: |
| * Add the size of the optional ResourceSource info |
| */ |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| AcpiRsStructOptionLength ( |
| &Resource->Data.Address64.ResourceSource)); |
| break; |
| |
| |
| case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: |
| /* |
| * Extended IRQ Resource: |
| * Add the size of each additional optional interrupt beyond the |
| * required 1 (4 bytes for each UINT32 interrupt number) |
| */ |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| ((Resource->Data.ExtendedIrq.InterruptCount - 1) * 4) + |
| |
| /* Add the size of the optional ResourceSource info */ |
| |
| AcpiRsStructOptionLength ( |
| &Resource->Data.ExtendedIrq.ResourceSource)); |
| break; |
| |
| |
| case ACPI_RESOURCE_TYPE_GPIO: |
| |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| (Resource->Data.Gpio.PinTableLength * 2) + |
| Resource->Data.Gpio.ResourceSource.StringLength + |
| Resource->Data.Gpio.VendorLength); |
| |
| break; |
| |
| case ACPI_RESOURCE_TYPE_PIN_FUNCTION: |
| |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| (Resource->Data.PinFunction.PinTableLength * 2) + |
| Resource->Data.PinFunction.ResourceSource.StringLength + |
| Resource->Data.PinFunction.VendorLength); |
| |
| break; |
| |
| |
| case ACPI_RESOURCE_TYPE_SERIAL_BUS: |
| |
| TotalSize = AcpiGbl_AmlResourceSerialBusSizes [ |
| Resource->Data.CommonSerialBus.Type]; |
| |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| Resource->Data.I2cSerialBus.ResourceSource.StringLength + |
| Resource->Data.I2cSerialBus.VendorLength); |
| |
| break; |
| |
| case ACPI_RESOURCE_TYPE_PIN_CONFIG: |
| |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| (Resource->Data.PinConfig.PinTableLength * 2) + |
| Resource->Data.PinConfig.ResourceSource.StringLength + |
| Resource->Data.PinConfig.VendorLength); |
| |
| break; |
| |
| case ACPI_RESOURCE_TYPE_PIN_GROUP: |
| |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| (Resource->Data.PinGroup.PinTableLength * 2) + |
| Resource->Data.PinGroup.ResourceLabel.StringLength + |
| Resource->Data.PinGroup.VendorLength); |
| |
| break; |
| |
| case ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION: |
| |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| Resource->Data.PinGroupFunction.ResourceSource.StringLength + |
| Resource->Data.PinGroupFunction.ResourceSourceLabel.StringLength + |
| Resource->Data.PinGroupFunction.VendorLength); |
| |
| break; |
| |
| case ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG: |
| |
| TotalSize = (ACPI_RS_LENGTH) (TotalSize + |
| Resource->Data.PinGroupConfig.ResourceSource.StringLength + |
| Resource->Data.PinGroupConfig.ResourceSourceLabel.StringLength + |
| Resource->Data.PinGroupConfig.VendorLength); |
| |
| break; |
| |
| default: |
| |
| break; |
| } |
| |
| /* Update the total */ |
| |
| AmlSizeNeeded += TotalSize; |
| |
| /* Point to the next object */ |
| |
| Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length); |
| } |
| |
| /* Did not find an EndTag resource descriptor */ |
| |
| return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsGetListLength |
| * |
| * PARAMETERS: AmlBuffer - Pointer to the resource byte stream |
| * AmlBufferLength - Size of AmlBuffer |
| * SizeNeeded - Where the size needed is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Takes an external resource byte stream and calculates the size |
| * buffer needed to hold the corresponding internal resource |
| * descriptor linked list. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiRsGetListLength ( |
| UINT8 *AmlBuffer, |
| UINT32 AmlBufferLength, |
| ACPI_SIZE *SizeNeeded) |
| { |
| ACPI_STATUS Status; |
| UINT8 *EndAml; |
| UINT8 *Buffer; |
| UINT32 BufferSize; |
| UINT16 Temp16; |
| UINT16 ResourceLength; |
| UINT32 ExtraStructBytes; |
| UINT8 ResourceIndex; |
| UINT8 MinimumAmlResourceLength; |
| AML_RESOURCE *AmlResource; |
| |
| |
| ACPI_FUNCTION_TRACE (RsGetListLength); |
| |
| |
| *SizeNeeded = ACPI_RS_SIZE_MIN; /* Minimum size is one EndTag */ |
| EndAml = AmlBuffer + AmlBufferLength; |
| |
| /* Walk the list of AML resource descriptors */ |
| |
| while (AmlBuffer < EndAml) |
| { |
| /* Validate the Resource Type and Resource Length */ |
| |
| Status = AcpiUtValidateResource (NULL, AmlBuffer, &ResourceIndex); |
| if (ACPI_FAILURE (Status)) |
| { |
| /* |
| * Exit on failure. Cannot continue because the descriptor length |
| * may be bogus also. |
| */ |
| return_ACPI_STATUS (Status); |
| } |
| |
| AmlResource = (void *) AmlBuffer; |
| |
| /* Get the resource length and base (minimum) AML size */ |
| |
| ResourceLength = AcpiUtGetResourceLength (AmlBuffer); |
| MinimumAmlResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex]; |
| |
| /* |
| * Augment the size for descriptors with optional |
| * and/or variable length fields |
| */ |
| ExtraStructBytes = 0; |
| Buffer = AmlBuffer + AcpiUtGetResourceHeaderLength (AmlBuffer); |
| |
| switch (AcpiUtGetResourceType (AmlBuffer)) |
| { |
| case ACPI_RESOURCE_NAME_IRQ: |
| /* |
| * IRQ Resource: |
| * Get the number of bits set in the 16-bit IRQ mask |
| */ |
| ACPI_MOVE_16_TO_16 (&Temp16, Buffer); |
| ExtraStructBytes = AcpiRsCountSetBits (Temp16); |
| break; |
| |
| |
| case ACPI_RESOURCE_NAME_DMA: |
| /* |
| * DMA Resource: |
| * Get the number of bits set in the 8-bit DMA mask |
| */ |
| ExtraStructBytes = AcpiRsCountSetBits (*Buffer); |
| break; |
| |
| |
| case ACPI_RESOURCE_NAME_VENDOR_SMALL: |
| case ACPI_RESOURCE_NAME_VENDOR_LARGE: |
| /* |
| * Vendor Resource: |
| * Get the number of vendor data bytes |
| */ |
| ExtraStructBytes = ResourceLength; |
| |
| /* |
| * There is already one byte included in the minimum |
| * descriptor size. If there are extra struct bytes, |
| * subtract one from the count. |
| */ |
| if (ExtraStructBytes) |
| { |
| ExtraStructBytes--; |
| } |
| break; |
| |
| |
| case ACPI_RESOURCE_NAME_END_TAG: |
| /* |
| * End Tag: This is the normal exit |
| */ |
| return_ACPI_STATUS (AE_OK); |
| |
| |
| case ACPI_RESOURCE_NAME_ADDRESS32: |
| case ACPI_RESOURCE_NAME_ADDRESS16: |
| case ACPI_RESOURCE_NAME_ADDRESS64: |
| /* |
| * Address Resource: |
| * Add the size of the optional ResourceSource |
| */ |
| ExtraStructBytes = AcpiRsStreamOptionLength ( |
| ResourceLength, MinimumAmlResourceLength); |
| break; |
| |
| |
| case ACPI_RESOURCE_NAME_EXTENDED_IRQ: |
| /* |
| * Extended IRQ Resource: |
| * Using the InterruptTableLength, add 4 bytes for each additional |
| * interrupt. Note: at least one interrupt is required and is |
| * included in the minimum descriptor size (reason for the -1) |
| */ |
| ExtraStructBytes = (Buffer[1] - 1) * sizeof (UINT32); |
| |
| /* Add the size of the optional ResourceSource */ |
| |
| ExtraStructBytes += AcpiRsStreamOptionLength ( |
| ResourceLength - ExtraStructBytes, MinimumAmlResourceLength); |
| break; |
| |
| case ACPI_RESOURCE_NAME_GPIO: |
| |
| /* Vendor data is optional */ |
| |
| if (AmlResource->Gpio.VendorLength) |
| { |
| ExtraStructBytes += |
| AmlResource->Gpio.VendorOffset - |
| AmlResource->Gpio.PinTableOffset + |
| AmlResource->Gpio.VendorLength; |
| } |
| else |
| { |
| ExtraStructBytes += |
| AmlResource->LargeHeader.ResourceLength + |
| sizeof (AML_RESOURCE_LARGE_HEADER) - |
| AmlResource->Gpio.PinTableOffset; |
| } |
| break; |
| |
| case ACPI_RESOURCE_NAME_PIN_FUNCTION: |
| |
| /* Vendor data is optional */ |
| |
| if (AmlResource->PinFunction.VendorLength) |
| { |
| ExtraStructBytes += |
| AmlResource->PinFunction.VendorOffset - |
| AmlResource->PinFunction.PinTableOffset + |
| AmlResource->PinFunction.VendorLength; |
| } |
| else |
| { |
| ExtraStructBytes += |
| AmlResource->LargeHeader.ResourceLength + |
| sizeof (AML_RESOURCE_LARGE_HEADER) - |
| AmlResource->PinFunction.PinTableOffset; |
| } |
| break; |
| |
| case ACPI_RESOURCE_NAME_SERIAL_BUS: { |
| /* Avoid undefined behavior: member access within misaligned address */ |
| |
| AML_RESOURCE_COMMON_SERIALBUS CommonSerialBus; |
| memcpy(&CommonSerialBus, AmlResource, sizeof(CommonSerialBus)); |
| |
| MinimumAmlResourceLength = AcpiGbl_ResourceAmlSerialBusSizes[ |
| CommonSerialBus.Type]; |
| ExtraStructBytes += |
| CommonSerialBus.ResourceLength - |
| MinimumAmlResourceLength; |
| break; |
| } |
| |
| case ACPI_RESOURCE_NAME_PIN_CONFIG: |
| |
| /* Vendor data is optional */ |
| |
| if (AmlResource->PinConfig.VendorLength) |
| { |
| ExtraStructBytes += |
| AmlResource->PinConfig.VendorOffset - |
| AmlResource->PinConfig.PinTableOffset + |
| AmlResource->PinConfig.VendorLength; |
| } |
| else |
| { |
| ExtraStructBytes += |
| AmlResource->LargeHeader.ResourceLength + |
| sizeof (AML_RESOURCE_LARGE_HEADER) - |
| AmlResource->PinConfig.PinTableOffset; |
| } |
| break; |
| |
| case ACPI_RESOURCE_NAME_PIN_GROUP: |
| |
| ExtraStructBytes += |
| AmlResource->PinGroup.VendorOffset - |
| AmlResource->PinGroup.PinTableOffset + |
| AmlResource->PinGroup.VendorLength; |
| |
| break; |
| |
| case ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION: |
| |
| ExtraStructBytes += |
| AmlResource->PinGroupFunction.VendorOffset - |
| AmlResource->PinGroupFunction.ResSourceOffset + |
| AmlResource->PinGroupFunction.VendorLength; |
| |
| break; |
| |
| case ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG: |
| |
| ExtraStructBytes += |
| AmlResource->PinGroupConfig.VendorOffset - |
| AmlResource->PinGroupConfig.ResSourceOffset + |
| AmlResource->PinGroupConfig.VendorLength; |
| |
| break; |
| |
| default: |
| |
| break; |
| } |
| |
| /* |
| * Update the required buffer size for the internal descriptor structs |
| * |
| * Important: Round the size up for the appropriate alignment. This |
| * is a requirement on IA64. |
| */ |
| if (AcpiUtGetResourceType (AmlBuffer) == |
| ACPI_RESOURCE_NAME_SERIAL_BUS) |
| { |
| /* Avoid undefined behavior: member access within misaligned address */ |
| |
| AML_RESOURCE_COMMON_SERIALBUS CommonSerialBus; |
| memcpy(&CommonSerialBus, AmlResource, sizeof(CommonSerialBus)); |
| |
| BufferSize = AcpiGbl_ResourceStructSerialBusSizes[ |
| CommonSerialBus.Type] + ExtraStructBytes; |
| } |
| else |
| { |
| BufferSize = AcpiGbl_ResourceStructSizes[ResourceIndex] + |
| ExtraStructBytes; |
| } |
| |
| BufferSize = (UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (BufferSize); |
| *SizeNeeded += BufferSize; |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES, |
| "Type %.2X, AmlLength %.2X InternalLength %.2X%8X\n", |
| AcpiUtGetResourceType (AmlBuffer), |
| AcpiUtGetDescriptorLength (AmlBuffer), ACPI_FORMAT_UINT64(*SizeNeeded))); |
| |
| /* |
| * Point to the next resource within the AML stream using the length |
| * contained in the resource descriptor header |
| */ |
| AmlBuffer += AcpiUtGetDescriptorLength (AmlBuffer); |
| } |
| |
| /* Did not find an EndTag resource descriptor */ |
| |
| return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsGetPciRoutingTableLength |
| * |
| * PARAMETERS: PackageObject - Pointer to the package object |
| * BufferSizeNeeded - UINT32 pointer of the size buffer |
| * needed to properly return the |
| * parsed data |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Given a package representing a PCI routing table, this |
| * calculates the size of the corresponding linked list of |
| * descriptions. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiRsGetPciRoutingTableLength ( |
| ACPI_OPERAND_OBJECT *PackageObject, |
| ACPI_SIZE *BufferSizeNeeded) |
| { |
| UINT32 NumberOfElements; |
| ACPI_SIZE TempSizeNeeded = 0; |
| ACPI_OPERAND_OBJECT **TopObjectList; |
| UINT32 Index; |
| ACPI_OPERAND_OBJECT *PackageElement; |
| ACPI_OPERAND_OBJECT **SubObjectList; |
| BOOLEAN NameFound; |
| UINT32 TableIndex; |
| |
| |
| ACPI_FUNCTION_TRACE (RsGetPciRoutingTableLength); |
| |
| |
| NumberOfElements = PackageObject->Package.Count; |
| |
| /* |
| * Calculate the size of the return buffer. |
| * The base size is the number of elements * the sizes of the |
| * structures. Additional space for the strings is added below. |
| * The minus one is to subtract the size of the UINT8 Source[1] |
| * member because it is added below. |
| * |
| * But each PRT_ENTRY structure has a pointer to a string and |
| * the size of that string must be found. |
| */ |
| TopObjectList = PackageObject->Package.Elements; |
| |
| for (Index = 0; Index < NumberOfElements; Index++) |
| { |
| /* Dereference the subpackage */ |
| |
| PackageElement = *TopObjectList; |
| |
| /* We must have a valid Package object */ |
| |
| if (!PackageElement || |
| (PackageElement->Common.Type != ACPI_TYPE_PACKAGE)) |
| { |
| return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| } |
| |
| /* |
| * The SubObjectList will now point to an array of the |
| * four IRQ elements: Address, Pin, Source and SourceIndex |
| */ |
| SubObjectList = PackageElement->Package.Elements; |
| |
| /* Scan the IrqTableElements for the Source Name String */ |
| |
| NameFound = FALSE; |
| |
| for (TableIndex = 0; |
| TableIndex < PackageElement->Package.Count && !NameFound; |
| TableIndex++) |
| { |
| if (*SubObjectList && /* Null object allowed */ |
| |
| ((ACPI_TYPE_STRING == |
| (*SubObjectList)->Common.Type) || |
| |
| ((ACPI_TYPE_LOCAL_REFERENCE == |
| (*SubObjectList)->Common.Type) && |
| |
| ((*SubObjectList)->Reference.Class == |
| ACPI_REFCLASS_NAME)))) |
| { |
| NameFound = TRUE; |
| } |
| else |
| { |
| /* Look at the next element */ |
| |
| SubObjectList++; |
| } |
| } |
| |
| TempSizeNeeded += (sizeof (ACPI_PCI_ROUTING_TABLE) - 4); |
| |
| /* Was a String type found? */ |
| |
| if (NameFound) |
| { |
| if ((*SubObjectList)->Common.Type == ACPI_TYPE_STRING) |
| { |
| /* |
| * The length String.Length field does not include the |
| * terminating NULL, add 1 |
| */ |
| TempSizeNeeded += ((ACPI_SIZE) |
| (*SubObjectList)->String.Length + 1); |
| } |
| else |
| { |
| TempSizeNeeded += AcpiNsGetPathnameLength ( |
| (*SubObjectList)->Reference.Node); |
| } |
| } |
| else |
| { |
| /* |
| * If no name was found, then this is a NULL, which is |
| * translated as a UINT32 zero. |
| */ |
| TempSizeNeeded += sizeof (UINT32); |
| } |
| |
| /* Round up the size since each element must be aligned */ |
| |
| TempSizeNeeded = ACPI_ROUND_UP_TO_64BIT (TempSizeNeeded); |
| |
| /* Point to the next ACPI_OPERAND_OBJECT */ |
| |
| TopObjectList++; |
| } |
| |
| /* |
| * Add an extra element to the end of the list, essentially a |
| * NULL terminator |
| */ |
| *BufferSizeNeeded = TempSizeNeeded + sizeof (ACPI_PCI_ROUTING_TABLE); |
| return_ACPI_STATUS (AE_OK); |
| } |
