/****************************************************************************** * * Module Name: aslresource - Resource template/descriptor utilities * *****************************************************************************/ /* * Copyright (C) 2000 - 2015, 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 #include "aslcompiler.y.h" #include #define _COMPONENT ACPI_COMPILER ACPI_MODULE_NAME ("aslresource") /******************************************************************************* * * FUNCTION: RsSmallAddressCheck * * PARAMETERS: Minimum - Address Min value * Maximum - Address Max value * Length - Address range value * Alignment - Address alignment value * MinOp - Original Op for Address Min * MaxOp - Original Op for Address Max * LengthOp - Original Op for address range * AlignOp - Original Op for address alignment. If * NULL, means "zero value for alignment is * OK, and means 64K alignment" (for * Memory24 descriptor) * Op - Parent Op for entire construct * * RETURN: None. Adds error messages to error log if necessary * * DESCRIPTION: Perform common value checks for "small" address descriptors. * Currently: * Io, Memory24, Memory32 * ******************************************************************************/ void RsSmallAddressCheck ( UINT8 Type, UINT32 Minimum, UINT32 Maximum, UINT32 Length, UINT32 Alignment, ACPI_PARSE_OBJECT *MinOp, ACPI_PARSE_OBJECT *MaxOp, ACPI_PARSE_OBJECT *LengthOp, ACPI_PARSE_OBJECT *AlignOp, ACPI_PARSE_OBJECT *Op) { if (Gbl_NoResourceChecking) { return; } /* * Check for a so-called "null descriptor". These are descriptors that are * created with most fields set to zero. The intent is that the descriptor * will be updated/completed at runtime via a BufferField. * * If the descriptor does NOT have a resource tag, it cannot be referenced * by a BufferField and we will flag this as an error. Conversely, if * the descriptor has a resource tag, we will assume that a BufferField * will be used to dynamically update it, so no error. * * A possible enhancement to this check would be to verify that in fact * a BufferField is created using the resource tag, and perhaps even * verify that a Store is performed to the BufferField. * * Note: for these descriptors, Alignment is allowed to be zero */ if (!Minimum && !Maximum && !Length) { if (!Op->Asl.ExternalName) { /* No resource tag. Descriptor is fixed and is also illegal */ AslError (ASL_ERROR, ASL_MSG_NULL_DESCRIPTOR, Op, NULL); } return; } /* * Range checks for Memory24 and Memory32. * IO descriptor has different definition of min/max, don't check. */ if (Type != ACPI_RESOURCE_NAME_IO) { /* Basic checks on Min/Max/Length */ if (Minimum > Maximum) { AslError (ASL_ERROR, ASL_MSG_INVALID_MIN_MAX, MinOp, NULL); } else if (Length > (Maximum - Minimum + 1)) { AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH, LengthOp, NULL); } /* Special case for Memory24, min/max values are compressed */ if (Type == ACPI_RESOURCE_NAME_MEMORY24) { if (!Alignment) /* Alignment==0 means 64K alignment */ { Alignment = ACPI_UINT16_MAX + 1; } Minimum <<= 8; Maximum <<= 8; } } /* Alignment of zero is not in ACPI spec, but is used to mean byte acc */ if (!Alignment) { Alignment = 1; } /* Addresses must be an exact multiple of the alignment value */ if (Minimum % Alignment) { AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MinOp, NULL); } if (Maximum % Alignment) { AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MaxOp, NULL); } } /******************************************************************************* * * FUNCTION: RsLargeAddressCheck * * PARAMETERS: Minimum - Address Min value * Maximum - Address Max value * Length - Address range value * Granularity - Address granularity value * Flags - General flags for address descriptors: * _MIF, _MAF, _DEC * MinOp - Original Op for Address Min * MaxOp - Original Op for Address Max * LengthOp - Original Op for address range * GranOp - Original Op for address granularity * Op - Parent Op for entire construct * * RETURN: None. Adds error messages to error log if necessary * * DESCRIPTION: Perform common value checks for "large" address descriptors. * Currently: * WordIo, WordBusNumber, WordSpace * DWordIo, DWordMemory, DWordSpace * QWordIo, QWordMemory, QWordSpace * ExtendedIo, ExtendedMemory, ExtendedSpace * * _MIF flag set means that the minimum address is fixed and is not relocatable * _MAF flag set means that the maximum address is fixed and is not relocatable * Length of zero means that the record size is variable * * This function implements the LEN/MIF/MAF/MIN/MAX/GRA rules within Table 6-40 * of the ACPI 4.0a specification. Added 04/2010. * ******************************************************************************/ void RsLargeAddressCheck ( UINT64 Minimum, UINT64 Maximum, UINT64 Length, UINT64 Granularity, UINT8 Flags, ACPI_PARSE_OBJECT *MinOp, ACPI_PARSE_OBJECT *MaxOp, ACPI_PARSE_OBJECT *LengthOp, ACPI_PARSE_OBJECT *GranOp, ACPI_PARSE_OBJECT *Op) { if (Gbl_NoResourceChecking) { return; } /* * Check for a so-called "null descriptor". These are descriptors that are * created with most fields set to zero. The intent is that the descriptor * will be updated/completed at runtime via a BufferField. * * If the descriptor does NOT have a resource tag, it cannot be referenced * by a BufferField and we will flag this as an error. Conversely, if * the descriptor has a resource tag, we will assume that a BufferField * will be used to dynamically update it, so no error. * * A possible enhancement to this check would be to verify that in fact * a BufferField is created using the resource tag, and perhaps even * verify that a Store is performed to the BufferField. */ if (!Minimum && !Maximum && !Length && !Granularity) { if (!Op->Asl.ExternalName) { /* No resource tag. Descriptor is fixed and is also illegal */ AslError (ASL_ERROR, ASL_MSG_NULL_DESCRIPTOR, Op, NULL); } return; } /* Basic checks on Min/Max/Length */ if (Minimum > Maximum) { AslError (ASL_ERROR, ASL_MSG_INVALID_MIN_MAX, MinOp, NULL); return; } else if (Length > (Maximum - Minimum + 1)) { AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH, LengthOp, NULL); return; } /* If specified (non-zero), ensure granularity is a power-of-two minus one */ if (Granularity) { if ((Granularity + 1) & Granularity) { AslError (ASL_ERROR, ASL_MSG_INVALID_GRANULARITY, GranOp, NULL); return; } } /* * Check the various combinations of Length, MinFixed, and MaxFixed */ if (Length) { /* Fixed non-zero length */ switch (Flags & (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF)) { case 0: /* * Fixed length, variable locations (both _MIN and _MAX). * Length must be a multiple of granularity */ if (Granularity & Length) { AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, LengthOp, NULL); } break; case (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF): /* Fixed length, fixed location. Granularity must be zero */ if (Granularity != 0) { AslError (ASL_ERROR, ASL_MSG_INVALID_GRAN_FIXED, GranOp, NULL); } /* Length must be exactly the size of the min/max window */ if (Length != (Maximum - Minimum + 1)) { AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH_FIXED, LengthOp, NULL); } break; /* All other combinations are invalid */ case ACPI_RESOURCE_FLAG_MIF: case ACPI_RESOURCE_FLAG_MAF: default: AslError (ASL_ERROR, ASL_MSG_INVALID_ADDR_FLAGS, LengthOp, NULL); } } else { /* Variable length (length==0) */ switch (Flags & (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF)) { case 0: /* * Both _MIN and _MAX are variable. * No additional requirements, just exit */ break; case ACPI_RESOURCE_FLAG_MIF: /* _MIN is fixed. _MIN must be multiple of _GRA */ /* * The granularity is defined by the ACPI specification to be a * power-of-two minus one, therefore the granularity is a * bitmask which can be used to easily validate the addresses. */ if (Granularity & Minimum) { AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MinOp, NULL); } break; case ACPI_RESOURCE_FLAG_MAF: /* _MAX is fixed. (_MAX + 1) must be multiple of _GRA */ if (Granularity & (Maximum + 1)) { AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MaxOp, "-1"); } break; /* Both MIF/MAF set is invalid if length is zero */ case (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF): default: AslError (ASL_ERROR, ASL_MSG_INVALID_ADDR_FLAGS, LengthOp, NULL); } } } /******************************************************************************* * * FUNCTION: RsGetStringDataLength * * PARAMETERS: InitializerOp - Start of a subtree of init nodes * * RETURN: Valid string length if a string node is found (otherwise 0) * * DESCRIPTION: In a list of peer nodes, find the first one that contains a * string and return the length of the string. * ******************************************************************************/ UINT16 RsGetStringDataLength ( ACPI_PARSE_OBJECT *InitializerOp) { while (InitializerOp) { if (InitializerOp->Asl.ParseOpcode == PARSEOP_STRING_LITERAL) { return ((UINT16) (strlen (InitializerOp->Asl.Value.String) + 1)); } InitializerOp = ASL_GET_PEER_NODE (InitializerOp); } return (0); } /******************************************************************************* * * FUNCTION: RsAllocateResourceNode * * PARAMETERS: Size - Size of node in bytes * * RETURN: The allocated node - aborts on allocation failure * * DESCRIPTION: Allocate a resource description node and the resource * descriptor itself (the nodes are used to link descriptors). * ******************************************************************************/ ASL_RESOURCE_NODE * RsAllocateResourceNode ( UINT32 Size) { ASL_RESOURCE_NODE *Rnode; /* Allocate the node */ Rnode = UtLocalCalloc (sizeof (ASL_RESOURCE_NODE)); /* Allocate the resource descriptor itself */ Rnode->Buffer = UtLocalCalloc (Size); Rnode->BufferLength = Size; return (Rnode); } /******************************************************************************* * * FUNCTION: RsCreateResourceField * * PARAMETERS: Op - Resource field node * Name - Name of the field (Used only to reference * the field in the ASL, not in the AML) * ByteOffset - Offset from the field start * BitOffset - Additional bit offset * BitLength - Number of bits in the field * * RETURN: None, sets fields within the input node * * DESCRIPTION: Utility function to generate a named bit field within a * resource descriptor. Mark a node as 1) a field in a resource * descriptor, and 2) set the value to be a BIT offset * ******************************************************************************/ void RsCreateResourceField ( ACPI_PARSE_OBJECT *Op, char *Name, UINT32 ByteOffset, UINT32 BitOffset, UINT32 BitLength) { Op->Asl.ExternalName = Name; Op->Asl.CompileFlags |= NODE_IS_RESOURCE_FIELD; Op->Asl.Value.Tag.BitOffset = (ByteOffset * 8) + BitOffset; Op->Asl.Value.Tag.BitLength = BitLength; } /******************************************************************************* * * FUNCTION: RsSetFlagBits * * PARAMETERS: *Flags - Pointer to the flag byte * Op - Flag initialization node * Position - Bit position within the flag byte * Default - Used if the node is DEFAULT. * * RETURN: Sets bits within the *Flags output byte. * * DESCRIPTION: Set a bit in a cumulative flags word from an initialization * node. Will use a default value if the node is DEFAULT, meaning * that no value was specified in the ASL. Used to merge multiple * keywords into a single flags byte. * ******************************************************************************/ void RsSetFlagBits ( UINT8 *Flags, ACPI_PARSE_OBJECT *Op, UINT8 Position, UINT8 DefaultBit) { if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) { /* Use the default bit */ *Flags |= (DefaultBit << Position); } else { /* Use the bit specified in the initialization node */ *Flags |= (((UINT8) Op->Asl.Value.Integer) << Position); } } void RsSetFlagBits16 ( UINT16 *Flags, ACPI_PARSE_OBJECT *Op, UINT8 Position, UINT8 DefaultBit) { if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) { /* Use the default bit */ *Flags |= (DefaultBit << Position); } else { /* Use the bit specified in the initialization node */ *Flags |= (((UINT16) Op->Asl.Value.Integer) << Position); } } /******************************************************************************* * * FUNCTION: RsCompleteNodeAndGetNext * * PARAMETERS: Op - Resource node to be completed * * RETURN: The next peer to the input node. * * DESCRIPTION: Mark the current node completed and return the next peer. * The node ParseOpcode is set to DEFAULT_ARG, meaning that * this node is to be ignored from now on. * ******************************************************************************/ ACPI_PARSE_OBJECT * RsCompleteNodeAndGetNext ( ACPI_PARSE_OBJECT *Op) { /* Mark this node unused */ Op->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; /* Move on to the next peer node in the initializer list */ return (ASL_GET_PEER_NODE (Op)); } /******************************************************************************* * * FUNCTION: RsCheckListForDuplicates * * PARAMETERS: Op - First op in the initializer list * * RETURN: None * * DESCRIPTION: Check an initializer list for duplicate values. Emits an error * if any duplicates are found. * ******************************************************************************/ void RsCheckListForDuplicates ( ACPI_PARSE_OBJECT *Op) { ACPI_PARSE_OBJECT *NextValueOp = Op; ACPI_PARSE_OBJECT *NextOp; UINT32 Value; if (!Op) { return; } /* Search list once for each value in the list */ while (NextValueOp) { Value = (UINT32) NextValueOp->Asl.Value.Integer; /* Compare this value to all remaining values in the list */ NextOp = ASL_GET_PEER_NODE (NextValueOp); while (NextOp) { if (NextOp->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG) { /* Compare values */ if (Value == (UINT32) NextOp->Asl.Value.Integer) { /* Emit error only once per duplicate node */ if (!(NextOp->Asl.CompileFlags & NODE_IS_DUPLICATE)) { NextOp->Asl.CompileFlags |= NODE_IS_DUPLICATE; AslError (ASL_ERROR, ASL_MSG_DUPLICATE_ITEM, NextOp, NULL); } } } NextOp = ASL_GET_PEER_NODE (NextOp); } NextValueOp = ASL_GET_PEER_NODE (NextValueOp); } } /******************************************************************************* * * FUNCTION: RsDoOneResourceDescriptor * * PARAMETERS: DescriptorTypeOp - Parent parse node of the descriptor * CurrentByteOffset - Offset in the resource descriptor * buffer. * * RETURN: A valid resource node for the descriptor * * DESCRIPTION: Dispatches the processing of one resource descriptor * ******************************************************************************/ ASL_RESOURCE_NODE * RsDoOneResourceDescriptor ( ASL_RESOURCE_INFO *Info, UINT8 *State) { ASL_RESOURCE_NODE *Rnode = NULL; /* Construct the resource */ switch (Info->DescriptorTypeOp->Asl.ParseOpcode) { case PARSEOP_DMA: Rnode = RsDoDmaDescriptor (Info); break; case PARSEOP_FIXEDDMA: Rnode = RsDoFixedDmaDescriptor (Info); break; case PARSEOP_DWORDIO: Rnode = RsDoDwordIoDescriptor (Info); break; case PARSEOP_DWORDMEMORY: Rnode = RsDoDwordMemoryDescriptor (Info); break; case PARSEOP_DWORDSPACE: Rnode = RsDoDwordSpaceDescriptor (Info); break; case PARSEOP_ENDDEPENDENTFN: switch (*State) { case ACPI_RSTATE_NORMAL: AslError (ASL_ERROR, ASL_MSG_MISSING_STARTDEPENDENT, Info->DescriptorTypeOp, NULL); break; case ACPI_RSTATE_START_DEPENDENT: AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING, Info->DescriptorTypeOp, NULL); break; case ACPI_RSTATE_DEPENDENT_LIST: default: break; } *State = ACPI_RSTATE_NORMAL; Rnode = RsDoEndDependentDescriptor (Info); break; case PARSEOP_ENDTAG: Rnode = RsDoEndTagDescriptor (Info); break; case PARSEOP_EXTENDEDIO: Rnode = RsDoExtendedIoDescriptor (Info); break; case PARSEOP_EXTENDEDMEMORY: Rnode = RsDoExtendedMemoryDescriptor (Info); break; case PARSEOP_EXTENDEDSPACE: Rnode = RsDoExtendedSpaceDescriptor (Info); break; case PARSEOP_FIXEDIO: Rnode = RsDoFixedIoDescriptor (Info); break; case PARSEOP_INTERRUPT: Rnode = RsDoInterruptDescriptor (Info); break; case PARSEOP_IO: Rnode = RsDoIoDescriptor (Info); break; case PARSEOP_IRQ: Rnode = RsDoIrqDescriptor (Info); break; case PARSEOP_IRQNOFLAGS: Rnode = RsDoIrqNoFlagsDescriptor (Info); break; case PARSEOP_MEMORY24: Rnode = RsDoMemory24Descriptor (Info); break; case PARSEOP_MEMORY32: Rnode = RsDoMemory32Descriptor (Info); break; case PARSEOP_MEMORY32FIXED: Rnode = RsDoMemory32FixedDescriptor (Info); break; case PARSEOP_QWORDIO: Rnode = RsDoQwordIoDescriptor (Info); break; case PARSEOP_QWORDMEMORY: Rnode = RsDoQwordMemoryDescriptor (Info); break; case PARSEOP_QWORDSPACE: Rnode = RsDoQwordSpaceDescriptor (Info); break; case PARSEOP_REGISTER: Rnode = RsDoGeneralRegisterDescriptor (Info); break; case PARSEOP_STARTDEPENDENTFN: switch (*State) { case ACPI_RSTATE_START_DEPENDENT: AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING, Info->DescriptorTypeOp, NULL); break; case ACPI_RSTATE_NORMAL: case ACPI_RSTATE_DEPENDENT_LIST: default: break; } *State = ACPI_RSTATE_START_DEPENDENT; Rnode = RsDoStartDependentDescriptor (Info); *State = ACPI_RSTATE_DEPENDENT_LIST; break; case PARSEOP_STARTDEPENDENTFN_NOPRI: switch (*State) { case ACPI_RSTATE_START_DEPENDENT: AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING, Info->DescriptorTypeOp, NULL); break; case ACPI_RSTATE_NORMAL: case ACPI_RSTATE_DEPENDENT_LIST: default: break; } *State = ACPI_RSTATE_START_DEPENDENT; Rnode = RsDoStartDependentNoPriDescriptor (Info); *State = ACPI_RSTATE_DEPENDENT_LIST; break; case PARSEOP_VENDORLONG: Rnode = RsDoVendorLargeDescriptor (Info); break; case PARSEOP_VENDORSHORT: Rnode = RsDoVendorSmallDescriptor (Info); break; case PARSEOP_WORDBUSNUMBER: Rnode = RsDoWordBusNumberDescriptor (Info); break; case PARSEOP_WORDIO: Rnode = RsDoWordIoDescriptor (Info); break; case PARSEOP_WORDSPACE: Rnode = RsDoWordSpaceDescriptor (Info); break; case PARSEOP_GPIO_INT: Rnode = RsDoGpioIntDescriptor (Info); break; case PARSEOP_GPIO_IO: Rnode = RsDoGpioIoDescriptor (Info); break; case PARSEOP_I2C_SERIALBUS: Rnode = RsDoI2cSerialBusDescriptor (Info); break; case PARSEOP_SPI_SERIALBUS: Rnode = RsDoSpiSerialBusDescriptor (Info); break; case PARSEOP_UART_SERIALBUS: Rnode = RsDoUartSerialBusDescriptor (Info); break; case PARSEOP_DEFAULT_ARG: /* Just ignore any of these, they are used as fillers/placeholders */ break; default: printf ("Unknown resource descriptor type [%s]\n", Info->DescriptorTypeOp->Asl.ParseOpName); break; } /* * Mark original node as unused, but head of a resource descriptor. * This allows the resource to be installed in the namespace so that * references to the descriptor can be resolved. */ Info->DescriptorTypeOp->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; Info->DescriptorTypeOp->Asl.CompileFlags = NODE_IS_RESOURCE_DESC; Info->DescriptorTypeOp->Asl.Value.Integer = Info->CurrentByteOffset; if (Rnode) { Info->DescriptorTypeOp->Asl.FinalAmlLength = Rnode->BufferLength; Info->DescriptorTypeOp->Asl.Extra = ((AML_RESOURCE *) Rnode->Buffer)->DescriptorType; } return (Rnode); } /******************************************************************************* * * FUNCTION: RsLinkDescriptorChain * * PARAMETERS: PreviousRnode - Pointer to the node that will be previous * to the linked node, At exit, set to the * last node in the new chain. * Rnode - Resource node to link into the list * * RETURN: Cumulative buffer byte offset of the new segment of chain * * DESCRIPTION: Link a descriptor chain at the end of an existing chain. * ******************************************************************************/ UINT32 RsLinkDescriptorChain ( ASL_RESOURCE_NODE **PreviousRnode, ASL_RESOURCE_NODE *Rnode) { ASL_RESOURCE_NODE *LastRnode; UINT32 CurrentByteOffset; /* Anything to do? */ if (!Rnode) { return (0); } /* Point the previous node to the new node */ (*PreviousRnode)->Next = Rnode; CurrentByteOffset = Rnode->BufferLength; /* Walk to the end of the chain headed by Rnode */ LastRnode = Rnode; while (LastRnode->Next) { LastRnode = LastRnode->Next; CurrentByteOffset += LastRnode->BufferLength; } /* Previous node becomes the last node in the chain */ *PreviousRnode = LastRnode; return (CurrentByteOffset); } /******************************************************************************* * * FUNCTION: RsDoResourceTemplate * * PARAMETERS: Op - Parent of a resource template list * * RETURN: None. Sets input node to point to a list of AML code * * DESCRIPTION: Merge a list of resource descriptors into a single AML buffer, * in preparation for output to the AML output file. * ******************************************************************************/ void RsDoResourceTemplate ( ACPI_PARSE_OBJECT *Op) { ACPI_PARSE_OBJECT *BufferLengthOp; ACPI_PARSE_OBJECT *BufferOp; ACPI_PARSE_OBJECT *DescriptorTypeOp; ACPI_PARSE_OBJECT *LastOp = NULL; UINT32 CurrentByteOffset = 0; ASL_RESOURCE_NODE HeadRnode; ASL_RESOURCE_NODE *PreviousRnode; ASL_RESOURCE_NODE *Rnode; ASL_RESOURCE_INFO Info; UINT8 State; /* Mark parent as containing a resource template */ if (Op->Asl.Parent) { Op->Asl.Parent->Asl.CompileFlags |= NODE_IS_RESOURCE_DESC; } /* ResourceTemplate Opcode is first (Op) */ /* Buffer Length node is first child */ BufferLengthOp = ASL_GET_CHILD_NODE (Op); /* Buffer Op is first peer */ BufferOp = ASL_GET_PEER_NODE (BufferLengthOp); /* First Descriptor type is next */ DescriptorTypeOp = ASL_GET_PEER_NODE (BufferOp); /* * Process all resource descriptors in the list * Note: It is assumed that the EndTag node has been automatically * inserted at the end of the template by the parser. */ State = ACPI_RSTATE_NORMAL; PreviousRnode = &HeadRnode; while (DescriptorTypeOp) { /* Save information for optional mapfile */ if (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONNECTION) { Info.MappingOp = Op->Asl.Parent; } else { Info.MappingOp = DescriptorTypeOp; } Info.DescriptorTypeOp = DescriptorTypeOp; Info.CurrentByteOffset = CurrentByteOffset; DescriptorTypeOp->Asl.CompileFlags |= NODE_IS_RESOURCE_DESC; Rnode = RsDoOneResourceDescriptor (&Info, &State); /* * Update current byte offset to indicate the number of bytes from the * start of the buffer. Buffer can include multiple descriptors, we * must keep track of the offset of not only each descriptor, but each * element (field) within each descriptor as well. */ CurrentByteOffset += RsLinkDescriptorChain (&PreviousRnode, Rnode); /* Get the next descriptor in the list */ LastOp = DescriptorTypeOp; DescriptorTypeOp = ASL_GET_PEER_NODE (DescriptorTypeOp); } if (State == ACPI_RSTATE_DEPENDENT_LIST) { if (LastOp) { LastOp = LastOp->Asl.Parent; } AslError (ASL_ERROR, ASL_MSG_MISSING_ENDDEPENDENT, LastOp, NULL); } /* * Transform the nodes into the following * * Op -> AML_BUFFER_OP * First Child -> BufferLength * Second Child -> Descriptor Buffer (raw byte data) */ Op->Asl.ParseOpcode = PARSEOP_BUFFER; Op->Asl.AmlOpcode = AML_BUFFER_OP; Op->Asl.CompileFlags = NODE_AML_PACKAGE | NODE_IS_RESOURCE_DESC; UtSetParseOpName (Op); BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER; BufferLengthOp->Asl.Value.Integer = CurrentByteOffset; (void) OpcSetOptimalIntegerSize (BufferLengthOp); UtSetParseOpName (BufferLengthOp); BufferOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; BufferOp->Asl.AmlOpcode = AML_RAW_DATA_CHAIN; BufferOp->Asl.AmlOpcodeLength = 0; BufferOp->Asl.AmlLength = CurrentByteOffset; BufferOp->Asl.Value.Buffer = (UINT8 *) HeadRnode.Next; BufferOp->Asl.CompileFlags |= NODE_IS_RESOURCE_DATA; UtSetParseOpName (BufferOp); return; }