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| Current File : //usr/src/sys/contrib/dev/acpica/compiler/aslresource.c |
/******************************************************************************
*
* Module Name: aslresource - Resource template/descriptor utilities
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, 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 <contrib/dev/acpica/compiler/aslcompiler.h>
#include "aslcompiler.y.h"
#include <contrib/dev/acpica/include/amlcode.h>
#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;
}
/* Special case for Memory24, values are compressed */
if (Type == ACPI_RESOURCE_NAME_MEMORY24)
{
if (!Alignment) /* Alignment==0 means 64K - no invalid alignment */
{
Alignment = ACPI_UINT16_MAX + 1;
}
Minimum <<= 8;
Maximum <<= 8;
Length *= 256;
}
/* 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);
}
}
/* 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: RsCreateBitField
*
* 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
*
* 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
RsCreateBitField (
ACPI_PARSE_OBJECT *Op,
char *Name,
UINT32 ByteOffset,
UINT32 BitOffset)
{
Op->Asl.ExternalName = Name;
Op->Asl.Value.Integer = ((UINT64) ByteOffset * 8) + BitOffset;
Op->Asl.CompileFlags |= (NODE_IS_RESOURCE_FIELD | NODE_IS_BIT_OFFSET);
}
/*******************************************************************************
*
* FUNCTION: RsCreateByteField
*
* 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
*
* RETURN: None, sets fields within the input node
*
* DESCRIPTION: Utility function to generate a named byte field within a
* resource descriptor. Mark a node as 1) a field in a resource
* descriptor, and 2) set the value to be a BYTE offset
*
******************************************************************************/
void
RsCreateByteField (
ACPI_PARSE_OBJECT *Op,
char *Name,
UINT32 ByteOffset)
{
Op->Asl.ExternalName = Name;
Op->Asl.Value.Integer = ByteOffset;
Op->Asl.CompileFlags |= NODE_IS_RESOURCE_FIELD;
}
/*******************************************************************************
*
* 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);
}
}
/*******************************************************************************
*
* 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 (
ACPI_PARSE_OBJECT *DescriptorTypeOp,
UINT32 CurrentByteOffset,
UINT8 *State)
{
ASL_RESOURCE_NODE *Rnode = NULL;
/* Construct the resource */
switch (DescriptorTypeOp->Asl.ParseOpcode)
{
case PARSEOP_DMA:
Rnode = RsDoDmaDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_DWORDIO:
Rnode = RsDoDwordIoDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_DWORDMEMORY:
Rnode = RsDoDwordMemoryDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_DWORDSPACE:
Rnode = RsDoDwordSpaceDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_ENDDEPENDENTFN:
switch (*State)
{
case ACPI_RSTATE_NORMAL:
AslError (ASL_ERROR, ASL_MSG_MISSING_STARTDEPENDENT,
DescriptorTypeOp, NULL);
break;
case ACPI_RSTATE_START_DEPENDENT:
AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
DescriptorTypeOp, NULL);
break;
case ACPI_RSTATE_DEPENDENT_LIST:
default:
break;
}
*State = ACPI_RSTATE_NORMAL;
Rnode = RsDoEndDependentDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_ENDTAG:
Rnode = RsDoEndTagDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_EXTENDEDIO:
Rnode = RsDoExtendedIoDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_EXTENDEDMEMORY:
Rnode = RsDoExtendedMemoryDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_EXTENDEDSPACE:
Rnode = RsDoExtendedSpaceDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_FIXEDIO:
Rnode = RsDoFixedIoDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_INTERRUPT:
Rnode = RsDoInterruptDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_IO:
Rnode = RsDoIoDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_IRQ:
Rnode = RsDoIrqDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_IRQNOFLAGS:
Rnode = RsDoIrqNoFlagsDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_MEMORY24:
Rnode = RsDoMemory24Descriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_MEMORY32:
Rnode = RsDoMemory32Descriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_MEMORY32FIXED:
Rnode = RsDoMemory32FixedDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_QWORDIO:
Rnode = RsDoQwordIoDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_QWORDMEMORY:
Rnode = RsDoQwordMemoryDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_QWORDSPACE:
Rnode = RsDoQwordSpaceDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_REGISTER:
Rnode = RsDoGeneralRegisterDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_STARTDEPENDENTFN:
switch (*State)
{
case ACPI_RSTATE_START_DEPENDENT:
AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
DescriptorTypeOp, NULL);
break;
case ACPI_RSTATE_NORMAL:
case ACPI_RSTATE_DEPENDENT_LIST:
default:
break;
}
*State = ACPI_RSTATE_START_DEPENDENT;
Rnode = RsDoStartDependentDescriptor (DescriptorTypeOp,
CurrentByteOffset);
*State = ACPI_RSTATE_DEPENDENT_LIST;
break;
case PARSEOP_STARTDEPENDENTFN_NOPRI:
switch (*State)
{
case ACPI_RSTATE_START_DEPENDENT:
AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
DescriptorTypeOp, NULL);
break;
case ACPI_RSTATE_NORMAL:
case ACPI_RSTATE_DEPENDENT_LIST:
default:
break;
}
*State = ACPI_RSTATE_START_DEPENDENT;
Rnode = RsDoStartDependentNoPriDescriptor (DescriptorTypeOp,
CurrentByteOffset);
*State = ACPI_RSTATE_DEPENDENT_LIST;
break;
case PARSEOP_VENDORLONG:
Rnode = RsDoVendorLargeDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_VENDORSHORT:
Rnode = RsDoVendorSmallDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_WORDBUSNUMBER:
Rnode = RsDoWordBusNumberDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_WORDIO:
Rnode = RsDoWordIoDescriptor (DescriptorTypeOp,
CurrentByteOffset);
break;
case PARSEOP_WORDSPACE:
Rnode = RsDoWordSpaceDescriptor (DescriptorTypeOp,
CurrentByteOffset);
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",
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.
*/
DescriptorTypeOp->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
DescriptorTypeOp->Asl.CompileFlags = NODE_IS_RESOURCE_DESC;
DescriptorTypeOp->Asl.Value.Integer = CurrentByteOffset;
if (Rnode)
{
DescriptorTypeOp->Asl.FinalAmlLength = Rnode->BufferLength;
}
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;
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)
{
DescriptorTypeOp->Asl.CompileFlags |= NODE_IS_RESOURCE_DESC;
Rnode = RsDoOneResourceDescriptor (DescriptorTypeOp, CurrentByteOffset,
&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;
BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER;
BufferLengthOp->Asl.Value.Integer = CurrentByteOffset;
(void) OpcSetOptimalIntegerSize (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;
return;
}