/******************************************************************************* * * Module Name: rsaddr - AcpiRsAddress16Resource * AcpiRsAddress16Stream * AcpiRsAddress32Resource * AcpiRsAddress32Stream * $Revision: 13 $ * ******************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999, 2000, 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 __RSADDR_C__ #include "acpi.h" #include "acresrc.h" #define _COMPONENT RESOURCE_MANAGER MODULE_NAME ("rsaddr") /******************************************************************************* * * FUNCTION: AcpiRsAddress16Resource * * PARAMETERS: ByteStreamBuffer - Pointer to the resource input byte * stream * BytesConsumed - UINT32 pointer that is filled with * the number of bytes consumed from * the ByteStreamBuffer * OutputBuffer - Pointer to the user's return buffer * StructureSize - UINT32 pointer that is filled with * the number of bytes in the filled * in structure * * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code * * DESCRIPTION: Take the resource byte stream and fill out the appropriate * structure pointed to by the OutputBuffer. Return the * number of bytes consumed from the byte stream. * ******************************************************************************/ ACPI_STATUS AcpiRsAddress16Resource ( UINT8 *ByteStreamBuffer, UINT32 *BytesConsumed, UINT8 **OutputBuffer, UINT32 *StructureSize) { UINT8 *Buffer = ByteStreamBuffer; RESOURCE *OutputStruct = (RESOURCE *) * OutputBuffer; UINT16 Temp16; UINT8 Temp8; UINT32 Index; UINT32 StructSize = sizeof(ADDRESS16_RESOURCE) + RESOURCE_LENGTH_NO_DATA; FUNCTION_TRACE ("RsAddress16Resource"); /* * Point past the Descriptor to get the number of bytes consumed */ Buffer += 1; MOVE_UNALIGNED16_TO_16 (&Temp16, Buffer); *BytesConsumed = Temp16 + 3; OutputStruct->Id = Address16; OutputStruct->Length = StructSize; /* * Get the Resource Type (Byte3) */ Buffer += 2; Temp8 = *Buffer; /* Values 0-2 are valid */ if (Temp8 > 2) { return_ACPI_STATUS (AE_AML_ERROR); } OutputStruct->Data.Address16.ResourceType = Temp8 & 0x03; /* * Get the General Flags (Byte4) */ Buffer += 1; Temp8 = *Buffer; /* * Producer / Consumer */ OutputStruct->Data.Address16.ProducerConsumer = Temp8 & 0x01; /* * Decode */ OutputStruct->Data.Address16.Decode = (Temp8 >> 1) & 0x01; /* * Min Address Fixed */ OutputStruct->Data.Address16.MinAddressFixed = (Temp8 >> 2) & 0x01; /* * Max Address Fixed */ OutputStruct->Data.Address16.MaxAddressFixed = (Temp8 >> 3) & 0x01; /* * Get the Type Specific Flags (Byte5) */ Buffer += 1; Temp8 = *Buffer; if (MEMORY_RANGE == OutputStruct->Data.Address16.ResourceType) { OutputStruct->Data.Address16.Attribute.Memory.ReadWriteAttribute = (UINT16) (Temp8 & 0x01); OutputStruct->Data.Address16.Attribute.Memory.CacheAttribute = (UINT16) ((Temp8 >> 1) & 0x0F); } else { if (IO_RANGE == OutputStruct->Data.Address16.ResourceType) { OutputStruct->Data.Address16.Attribute.Io.RangeAttribute = (UINT16) (Temp8 & 0x03); } else { /* BUS_NUMBER_RANGE == Address32Data->ResourceType */ /* Nothing needs to be filled in */ } } /* * Get Granularity (Bytes 6-7) */ Buffer += 1; MOVE_UNALIGNED16_TO_16 (&OutputStruct->Data.Address16.Granularity, Buffer); /* * Get MinAddressRange (Bytes 8-9) */ Buffer += 2; MOVE_UNALIGNED16_TO_16 (&OutputStruct->Data.Address16.MinAddressRange, Buffer); /* * Get MaxAddressRange (Bytes 10-11) */ Buffer += 2; MOVE_UNALIGNED16_TO_16 (&OutputStruct->Data.Address16.MaxAddressRange, Buffer); /* * Get AddressTranslationOffset (Bytes 12-13) */ Buffer += 2; MOVE_UNALIGNED16_TO_16 (&OutputStruct->Data.Address16.AddressTranslationOffset, Buffer); /* * Get AddressLength (Bytes 14-15) */ Buffer += 2; MOVE_UNALIGNED16_TO_16 (&OutputStruct->Data.Address16.AddressLength, Buffer); /* * Resource Source Index (if present) */ Buffer += 2; /* * This will leave us pointing to the Resource Source Index * If it is present, then save it off and calculate the * pointer to where the null terminated string goes: * Each Interrupt takes 32-bits + the 5 bytes of the * stream that are default. */ if (*BytesConsumed > 16) { /* Dereference the Index */ Temp8 = *Buffer; OutputStruct->Data.Address16.ResourceSourceIndex = (UINT32) Temp8; /* Point to the String */ Buffer += 1; /* Copy the string into the buffer */ Index = 0; while (0x00 != *Buffer) { OutputStruct->Data.Address16.ResourceSource[Index] = *Buffer; Buffer += 1; Index += 1; } /* * Add the terminating null */ OutputStruct->Data.Address16.ResourceSource[Index] = 0x00; OutputStruct->Data.Address16.ResourceSourceStringLength = Index + 1; /* * In order for the StructSize to fall on a 32-bit boundry, * calculate the length of the string and expand the * StructSize to the next 32-bit boundry. */ Temp8 = (UINT8) (Index + 1); StructSize += ROUND_UP_TO_32BITS (Temp8); OutputStruct->Length = StructSize; } else { OutputStruct->Data.Address16.ResourceSourceIndex = 0x00; OutputStruct->Data.Address16.ResourceSourceStringLength = 0; OutputStruct->Data.Address16.ResourceSource[0] = 0x00; } /* * Return the final size of the structure */ *StructureSize = StructSize; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiRsAddress16Stream * * PARAMETERS: LinkedList - Pointer to the resource linked list * OutputBuffer - Pointer to the user's return buffer * BytesConsumed - UINT32 pointer that is filled with * the number of bytes of the * OutputBuffer used * * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code * * DESCRIPTION: Take the linked list resource structure and fills in the * the appropriate bytes in a byte stream * ******************************************************************************/ ACPI_STATUS AcpiRsAddress16Stream ( RESOURCE *LinkedList, UINT8 **OutputBuffer, UINT32 *BytesConsumed) { UINT8 *Buffer = *OutputBuffer; UINT8 *LengthField; UINT8 Temp8; NATIVE_CHAR *TempPointer = NULL; UINT32 ActualBytes; FUNCTION_TRACE ("RsAddress16Stream"); /* * The descriptor field is static */ *Buffer = 0x88; Buffer += 1; /* * Save a pointer to the Length field - to be filled in later */ LengthField = Buffer; Buffer += 2; /* * Set the Resource Type (Memory, Io, BusNumber) */ Temp8 = (UINT8) (LinkedList->Data.Address16.ResourceType & 0x03); *Buffer = Temp8; Buffer += 1; /* * Set the general flags */ Temp8 = (UINT8) (LinkedList->Data.Address16.ProducerConsumer & 0x01); Temp8 |= (LinkedList->Data.Address16.Decode & 0x01) << 1; Temp8 |= (LinkedList->Data.Address16.MinAddressFixed & 0x01) << 2; Temp8 |= (LinkedList->Data.Address16.MaxAddressFixed & 0x01) << 3; *Buffer = Temp8; Buffer += 1; /* * Set the type specific flags */ Temp8 = 0; if (MEMORY_RANGE == LinkedList->Data.Address16.ResourceType) { Temp8 = (UINT8) (LinkedList->Data.Address16.Attribute.Memory.ReadWriteAttribute & 0x01); Temp8 |= (LinkedList->Data.Address16.Attribute.Memory.CacheAttribute & 0x0F) << 1; } else if (IO_RANGE == LinkedList->Data.Address16.ResourceType) { Temp8 = (UINT8) (LinkedList->Data.Address16.Attribute.Io.RangeAttribute & 0x03); } *Buffer = Temp8; Buffer += 1; /* * Set the address space granularity */ MOVE_UNALIGNED16_TO_16 (Buffer, &LinkedList->Data.Address16.Granularity); Buffer += 2; /* * Set the address range minimum */ MOVE_UNALIGNED16_TO_16 (Buffer, &LinkedList->Data.Address16.MinAddressRange); Buffer += 2; /* * Set the address range maximum */ MOVE_UNALIGNED16_TO_16 (Buffer, &LinkedList->Data.Address16.MaxAddressRange); Buffer += 2; /* * Set the address translation offset */ MOVE_UNALIGNED16_TO_16 (Buffer, &LinkedList->Data.Address16.AddressTranslationOffset); Buffer += 2; /* * Set the address length */ MOVE_UNALIGNED16_TO_16 (Buffer, &LinkedList->Data.Address16.AddressLength); Buffer += 2; /* * Resource Source Index and Resource Source are optional */ if (0 != LinkedList->Data.Address16.ResourceSourceStringLength) { Temp8 = (UINT8) LinkedList->Data.Address16.ResourceSourceIndex; *Buffer = Temp8; Buffer += 1; TempPointer = (NATIVE_CHAR *) Buffer; /* * Copy the string */ STRCPY (TempPointer, LinkedList->Data.Address16.ResourceSource); /* * Buffer needs to be set to the length of the sting + one for the * terminating null */ Buffer += (STRLEN (LinkedList->Data.Address16.ResourceSource) + 1); } /* * Return the number of bytes consumed in this operation */ ActualBytes = (UINT32) ((NATIVE_UINT) Buffer - (NATIVE_UINT) *OutputBuffer); *BytesConsumed = ActualBytes; /* * Set the length field to the number of bytes consumed * minus the header size (3 bytes) */ ActualBytes -= 3; MOVE_UNALIGNED16_TO_16 (LengthField, &ActualBytes); return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiRsAddress32Resource * * PARAMETERS: ByteStreamBuffer - Pointer to the resource input byte * stream * BytesConsumed - UINT32 pointer that is filled with * the number of bytes consumed from * the ByteStreamBuffer * OutputBuffer - Pointer to the user's return buffer * StructureSize - UINT32 pointer that is filled with * the number of bytes in the filled * in structure * * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code * * DESCRIPTION: Take the resource byte stream and fill out the appropriate * structure pointed to by the OutputBuffer. Return the * number of bytes consumed from the byte stream. * ******************************************************************************/ ACPI_STATUS AcpiRsAddress32Resource ( UINT8 *ByteStreamBuffer, UINT32 *BytesConsumed, UINT8 **OutputBuffer, UINT32 *StructureSize) { UINT8 *Buffer; RESOURCE *OutputStruct; UINT16 Temp16; UINT8 Temp8; UINT32 StructSize; UINT32 Index; FUNCTION_TRACE ("RsAddress32Resource"); Buffer = ByteStreamBuffer; OutputStruct = (RESOURCE *) *OutputBuffer; StructSize = sizeof (ADDRESS32_RESOURCE) + RESOURCE_LENGTH_NO_DATA; /* * Point past the Descriptor to get the number of bytes consumed */ Buffer += 1; MOVE_UNALIGNED16_TO_16 (&Temp16, Buffer); *BytesConsumed = Temp16 + 3; OutputStruct->Id = Address32; /* * Get the Resource Type (Byte3) */ Buffer += 2; Temp8 = *Buffer; /* Values 0-2 are valid */ if(Temp8 > 2) { return_ACPI_STATUS (AE_AML_ERROR); } OutputStruct->Data.Address32.ResourceType = Temp8 & 0x03; /* * Get the General Flags (Byte4) */ Buffer += 1; Temp8 = *Buffer; /* * Producer / Consumer */ OutputStruct->Data.Address32.ProducerConsumer = Temp8 & 0x01; /* * Decode */ OutputStruct->Data.Address32.Decode = (Temp8 >> 1) & 0x01; /* * Min Address Fixed */ OutputStruct->Data.Address32.MinAddressFixed = (Temp8 >> 2) & 0x01; /* * Max Address Fixed */ OutputStruct->Data.Address32.MaxAddressFixed = (Temp8 >> 3) & 0x01; /* * Get the Type Specific Flags (Byte5) */ Buffer += 1; Temp8 = *Buffer; if (MEMORY_RANGE == OutputStruct->Data.Address32.ResourceType) { OutputStruct->Data.Address32.Attribute.Memory.ReadWriteAttribute = (UINT16) (Temp8 & 0x01); OutputStruct->Data.Address32.Attribute.Memory.CacheAttribute = (UINT16) ((Temp8 >> 1) & 0x0F); } else { if (IO_RANGE == OutputStruct->Data.Address32.ResourceType) { OutputStruct->Data.Address32.Attribute.Io.RangeAttribute = (UINT16) (Temp8 & 0x03); } else { /* BUS_NUMBER_RANGE == OutputStruct->Data.Address32.ResourceType */ /* Nothing needs to be filled in */ } } /* * Get Granularity (Bytes 6-9) */ Buffer += 1; MOVE_UNALIGNED32_TO_32 (&OutputStruct->Data.Address32.Granularity, Buffer); /* * Get MinAddressRange (Bytes 10-13) */ Buffer += 4; MOVE_UNALIGNED32_TO_32 (&OutputStruct->Data.Address32.MinAddressRange, Buffer); /* * Get MaxAddressRange (Bytes 14-17) */ Buffer += 4; MOVE_UNALIGNED32_TO_32 (&OutputStruct->Data.Address32.MaxAddressRange, Buffer); /* * Get AddressTranslationOffset (Bytes 18-21) */ Buffer += 4; MOVE_UNALIGNED32_TO_32 (&OutputStruct->Data.Address32.AddressTranslationOffset, Buffer); /* * Get AddressLength (Bytes 22-25) */ Buffer += 4; MOVE_UNALIGNED32_TO_32 (&OutputStruct->Data.Address32.AddressLength, Buffer); /* * Resource Source Index (if present) */ Buffer += 4; /* * This will leave us pointing to the Resource Source Index * If it is present, then save it off and calculate the * pointer to where the null terminated string goes: * Each Interrupt takes 32-bits + the 5 bytes of the * stream that are default. */ if (*BytesConsumed > 26) { /* Dereference the Index */ Temp8 = *Buffer; OutputStruct->Data.Address32.ResourceSourceIndex = (UINT32)Temp8; /* Point to the String */ Buffer += 1; /* Copy the string into the buffer */ Index = 0; while (0x00 != *Buffer) { OutputStruct->Data.Address32.ResourceSource[Index] = *Buffer; Buffer += 1; Index += 1; } /* * Add the terminating null */ OutputStruct->Data.Address32.ResourceSource[Index] = 0x00; OutputStruct->Data.Address32.ResourceSourceStringLength = Index + 1; /* * In order for the StructSize to fall on a 32-bit boundry, * calculate the length of the string and expand the * StructSize to the next 32-bit boundry. */ Temp8 = (UINT8) (Index + 1); StructSize += ROUND_UP_TO_32BITS (Temp8); } else { OutputStruct->Data.Address32.ResourceSourceIndex = 0x00; OutputStruct->Data.Address32.ResourceSourceStringLength = 0; OutputStruct->Data.Address32.ResourceSource[0] = 0x00; } /* * Set the Length parameter */ OutputStruct->Length = StructSize; /* * Return the final size of the structure */ *StructureSize = StructSize; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiRsAddress32Stream * * PARAMETERS: LinkedList - Pointer to the resource linked list * OutputBuffer - Pointer to the user's return buffer * BytesConsumed - UINT32 pointer that is filled with * the number of bytes of the * OutputBuffer used * * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code * * DESCRIPTION: Take the linked list resource structure and fills in the * the appropriate bytes in a byte stream * ******************************************************************************/ ACPI_STATUS AcpiRsAddress32Stream ( RESOURCE *LinkedList, UINT8 **OutputBuffer, UINT32 *BytesConsumed) { UINT8 *Buffer; UINT16 *LengthField; UINT8 Temp8; NATIVE_CHAR *TempPointer; FUNCTION_TRACE ("RsAddress32Stream"); Buffer = *OutputBuffer; /* * The descriptor field is static */ *Buffer = 0x87; Buffer += 1; /* * Set a pointer to the Length field - to be filled in later */ LengthField = (UINT16 *)Buffer; Buffer += 2; /* * Set the Resource Type (Memory, Io, BusNumber) */ Temp8 = (UINT8) (LinkedList->Data.Address32.ResourceType & 0x03); *Buffer = Temp8; Buffer += 1; /* * Set the general flags */ Temp8 = (UINT8) (LinkedList->Data.Address32.ProducerConsumer & 0x01); Temp8 |= (LinkedList->Data.Address32.Decode & 0x01) << 1; Temp8 |= (LinkedList->Data.Address32.MinAddressFixed & 0x01) << 2; Temp8 |= (LinkedList->Data.Address32.MaxAddressFixed & 0x01) << 3; *Buffer = Temp8; Buffer += 1; /* * Set the type specific flags */ Temp8 = 0; if(MEMORY_RANGE == LinkedList->Data.Address32.ResourceType) { Temp8 = (UINT8) (LinkedList->Data.Address32.Attribute.Memory.ReadWriteAttribute & 0x01); Temp8 |= (LinkedList->Data.Address32.Attribute.Memory.CacheAttribute & 0x0F) << 1; } else if (IO_RANGE == LinkedList->Data.Address32.ResourceType) { Temp8 = (UINT8) (LinkedList->Data.Address32.Attribute.Io.RangeAttribute & 0x03); } *Buffer = Temp8; Buffer += 1; /* * Set the address space granularity */ MOVE_UNALIGNED32_TO_32 (Buffer, &LinkedList->Data.Address32.Granularity); Buffer += 4; /* * Set the address range minimum */ MOVE_UNALIGNED32_TO_32 (Buffer, &LinkedList->Data.Address32.MinAddressRange); Buffer += 4; /* * Set the address range maximum */ MOVE_UNALIGNED32_TO_32 (Buffer, &LinkedList->Data.Address32.MaxAddressRange); Buffer += 4; /* * Set the address translation offset */ MOVE_UNALIGNED32_TO_32 (Buffer, &LinkedList->Data.Address32.AddressTranslationOffset); Buffer += 4; /* * Set the address length */ MOVE_UNALIGNED32_TO_32 (Buffer, &LinkedList->Data.Address32.AddressLength); Buffer += 4; /* * Resource Source Index and Resource Source are optional */ if (0 != LinkedList->Data.Address32.ResourceSourceStringLength) { Temp8 = (UINT8) LinkedList->Data.Address32.ResourceSourceIndex; *Buffer = Temp8; Buffer += 1; TempPointer = (NATIVE_CHAR *) Buffer; /* * Copy the string */ STRCPY (TempPointer, LinkedList->Data.Address32.ResourceSource); /* * Buffer needs to be set to the length of the sting + one for the * terminating null */ Buffer += (STRLEN (LinkedList->Data.Address32.ResourceSource) + 1); } /* * Return the number of bytes consumed in this operation */ *BytesConsumed = (UINT32) ((NATIVE_UINT) Buffer - (NATIVE_UINT) *OutputBuffer); /* * Set the length field to the number of bytes consumed * minus the header size (3 bytes) */ *LengthField = (UINT16) (*BytesConsumed - 3); return_ACPI_STATUS (AE_OK); }