773 lines
22 KiB
C
773 lines
22 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utresrc - Resource managment utilities
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2009, 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 __UTRESRC_C__
|
|
|
|
#include <contrib/dev/acpica/include/acpi.h>
|
|
#include <contrib/dev/acpica/include/accommon.h>
|
|
#include <contrib/dev/acpica/include/amlresrc.h>
|
|
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME ("utresrc")
|
|
|
|
|
|
#if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER)
|
|
|
|
/*
|
|
* Strings used to decode resource descriptors.
|
|
* Used by both the disasssembler and the debugger resource dump routines
|
|
*/
|
|
const char *AcpiGbl_BmDecode[] =
|
|
{
|
|
"NotBusMaster",
|
|
"BusMaster"
|
|
};
|
|
|
|
const char *AcpiGbl_ConfigDecode[] =
|
|
{
|
|
"0 - Good Configuration",
|
|
"1 - Acceptable Configuration",
|
|
"2 - Suboptimal Configuration",
|
|
"3 - ***Invalid Configuration***",
|
|
};
|
|
|
|
const char *AcpiGbl_ConsumeDecode[] =
|
|
{
|
|
"ResourceProducer",
|
|
"ResourceConsumer"
|
|
};
|
|
|
|
const char *AcpiGbl_DecDecode[] =
|
|
{
|
|
"PosDecode",
|
|
"SubDecode"
|
|
};
|
|
|
|
const char *AcpiGbl_HeDecode[] =
|
|
{
|
|
"Level",
|
|
"Edge"
|
|
};
|
|
|
|
const char *AcpiGbl_IoDecode[] =
|
|
{
|
|
"Decode10",
|
|
"Decode16"
|
|
};
|
|
|
|
const char *AcpiGbl_LlDecode[] =
|
|
{
|
|
"ActiveHigh",
|
|
"ActiveLow"
|
|
};
|
|
|
|
const char *AcpiGbl_MaxDecode[] =
|
|
{
|
|
"MaxNotFixed",
|
|
"MaxFixed"
|
|
};
|
|
|
|
const char *AcpiGbl_MemDecode[] =
|
|
{
|
|
"NonCacheable",
|
|
"Cacheable",
|
|
"WriteCombining",
|
|
"Prefetchable"
|
|
};
|
|
|
|
const char *AcpiGbl_MinDecode[] =
|
|
{
|
|
"MinNotFixed",
|
|
"MinFixed"
|
|
};
|
|
|
|
const char *AcpiGbl_MtpDecode[] =
|
|
{
|
|
"AddressRangeMemory",
|
|
"AddressRangeReserved",
|
|
"AddressRangeACPI",
|
|
"AddressRangeNVS"
|
|
};
|
|
|
|
const char *AcpiGbl_RngDecode[] =
|
|
{
|
|
"InvalidRanges",
|
|
"NonISAOnlyRanges",
|
|
"ISAOnlyRanges",
|
|
"EntireRange"
|
|
};
|
|
|
|
const char *AcpiGbl_RwDecode[] =
|
|
{
|
|
"ReadOnly",
|
|
"ReadWrite"
|
|
};
|
|
|
|
const char *AcpiGbl_ShrDecode[] =
|
|
{
|
|
"Exclusive",
|
|
"Shared"
|
|
};
|
|
|
|
const char *AcpiGbl_SizDecode[] =
|
|
{
|
|
"Transfer8",
|
|
"Transfer8_16",
|
|
"Transfer16",
|
|
"InvalidSize"
|
|
};
|
|
|
|
const char *AcpiGbl_TrsDecode[] =
|
|
{
|
|
"DenseTranslation",
|
|
"SparseTranslation"
|
|
};
|
|
|
|
const char *AcpiGbl_TtpDecode[] =
|
|
{
|
|
"TypeStatic",
|
|
"TypeTranslation"
|
|
};
|
|
|
|
const char *AcpiGbl_TypDecode[] =
|
|
{
|
|
"Compatibility",
|
|
"TypeA",
|
|
"TypeB",
|
|
"TypeF"
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Base sizes of the raw AML resource descriptors, indexed by resource type.
|
|
* Zero indicates a reserved (and therefore invalid) resource type.
|
|
*/
|
|
const UINT8 AcpiGbl_ResourceAmlSizes[] =
|
|
{
|
|
/* Small descriptors */
|
|
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
ACPI_AML_SIZE_SMALL (AML_RESOURCE_IRQ),
|
|
ACPI_AML_SIZE_SMALL (AML_RESOURCE_DMA),
|
|
ACPI_AML_SIZE_SMALL (AML_RESOURCE_START_DEPENDENT),
|
|
ACPI_AML_SIZE_SMALL (AML_RESOURCE_END_DEPENDENT),
|
|
ACPI_AML_SIZE_SMALL (AML_RESOURCE_IO),
|
|
ACPI_AML_SIZE_SMALL (AML_RESOURCE_FIXED_IO),
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
ACPI_AML_SIZE_SMALL (AML_RESOURCE_VENDOR_SMALL),
|
|
ACPI_AML_SIZE_SMALL (AML_RESOURCE_END_TAG),
|
|
|
|
/* Large descriptors */
|
|
|
|
0,
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_MEMORY24),
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_GENERIC_REGISTER),
|
|
0,
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_VENDOR_LARGE),
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_MEMORY32),
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_FIXED_MEMORY32),
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS32),
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS16),
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_EXTENDED_IRQ),
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS64),
|
|
ACPI_AML_SIZE_LARGE (AML_RESOURCE_EXTENDED_ADDRESS64)
|
|
};
|
|
|
|
|
|
/*
|
|
* Resource types, used to validate the resource length field.
|
|
* The length of fixed-length types must match exactly, variable
|
|
* lengths must meet the minimum required length, etc.
|
|
* Zero indicates a reserved (and therefore invalid) resource type.
|
|
*/
|
|
static const UINT8 AcpiGbl_ResourceTypes[] =
|
|
{
|
|
/* Small descriptors */
|
|
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
ACPI_SMALL_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_SMALL_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
|
|
/* Large descriptors */
|
|
|
|
0,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
0,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH
|
|
};
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtWalkAmlResources
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource template
|
|
* AmlLength - Length of the entire template
|
|
* UserFunction - Called once for each descriptor found. If
|
|
* NULL, a pointer to the EndTag is returned
|
|
* Context - Passed to UserFunction
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Walk a raw AML resource list(buffer). User function called
|
|
* once for each resource found.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtWalkAmlResources (
|
|
UINT8 *Aml,
|
|
ACPI_SIZE AmlLength,
|
|
ACPI_WALK_AML_CALLBACK UserFunction,
|
|
void *Context)
|
|
{
|
|
ACPI_STATUS Status;
|
|
UINT8 *EndAml;
|
|
UINT8 ResourceIndex;
|
|
UINT32 Length;
|
|
UINT32 Offset = 0;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (UtWalkAmlResources);
|
|
|
|
|
|
/* The absolute minimum resource template is one EndTag descriptor */
|
|
|
|
if (AmlLength < sizeof (AML_RESOURCE_END_TAG))
|
|
{
|
|
return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
/* Point to the end of the resource template buffer */
|
|
|
|
EndAml = Aml + AmlLength;
|
|
|
|
/* Walk the byte list, abort on any invalid descriptor type or length */
|
|
|
|
while (Aml < EndAml)
|
|
{
|
|
/* Validate the Resource Type and Resource Length */
|
|
|
|
Status = AcpiUtValidateResource (Aml, &ResourceIndex);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Get the length of this descriptor */
|
|
|
|
Length = AcpiUtGetDescriptorLength (Aml);
|
|
|
|
/* Invoke the user function */
|
|
|
|
if (UserFunction)
|
|
{
|
|
Status = UserFunction (Aml, Length, Offset, ResourceIndex, Context);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
}
|
|
|
|
/* An EndTag descriptor terminates this resource template */
|
|
|
|
if (AcpiUtGetResourceType (Aml) == ACPI_RESOURCE_NAME_END_TAG)
|
|
{
|
|
/*
|
|
* There must be at least one more byte in the buffer for
|
|
* the 2nd byte of the EndTag
|
|
*/
|
|
if ((Aml + 1) >= EndAml)
|
|
{
|
|
return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
/* Return the pointer to the EndTag if requested */
|
|
|
|
if (!UserFunction)
|
|
{
|
|
*(void **) Context = Aml;
|
|
}
|
|
|
|
/* Normal exit */
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
Aml += Length;
|
|
Offset += Length;
|
|
}
|
|
|
|
/* Did not find an EndTag descriptor */
|
|
|
|
return (AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtValidateResource
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
* ReturnIndex - Where the resource index is returned. NULL
|
|
* if the index is not required.
|
|
*
|
|
* RETURN: Status, and optionally the Index into the global resource tables
|
|
*
|
|
* DESCRIPTION: Validate an AML resource descriptor by checking the Resource
|
|
* Type and Resource Length. Returns an index into the global
|
|
* resource information/dispatch tables for later use.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtValidateResource (
|
|
void *Aml,
|
|
UINT8 *ReturnIndex)
|
|
{
|
|
UINT8 ResourceType;
|
|
UINT8 ResourceIndex;
|
|
ACPI_RS_LENGTH ResourceLength;
|
|
ACPI_RS_LENGTH MinimumResourceLength;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/*
|
|
* 1) Validate the ResourceType field (Byte 0)
|
|
*/
|
|
ResourceType = ACPI_GET8 (Aml);
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (ResourceType & ACPI_RESOURCE_NAME_LARGE)
|
|
{
|
|
/* Verify the large resource type (name) against the max */
|
|
|
|
if (ResourceType > ACPI_RESOURCE_NAME_LARGE_MAX)
|
|
{
|
|
return (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
|
|
/*
|
|
* Large Resource Type -- bits 6:0 contain the name
|
|
* Translate range 0x80-0x8B to index range 0x10-0x1B
|
|
*/
|
|
ResourceIndex = (UINT8) (ResourceType - 0x70);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Small Resource Type -- bits 6:3 contain the name
|
|
* Shift range to index range 0x00-0x0F
|
|
*/
|
|
ResourceIndex = (UINT8)
|
|
((ResourceType & ACPI_RESOURCE_NAME_SMALL_MASK) >> 3);
|
|
}
|
|
|
|
/* Check validity of the resource type, zero indicates name is invalid */
|
|
|
|
if (!AcpiGbl_ResourceTypes[ResourceIndex])
|
|
{
|
|
return (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
|
|
|
|
/*
|
|
* 2) Validate the ResourceLength field. This ensures that the length
|
|
* is at least reasonable, and guarantees that it is non-zero.
|
|
*/
|
|
ResourceLength = AcpiUtGetResourceLength (Aml);
|
|
MinimumResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex];
|
|
|
|
/* Validate based upon the type of resource - fixed length or variable */
|
|
|
|
switch (AcpiGbl_ResourceTypes[ResourceIndex])
|
|
{
|
|
case ACPI_FIXED_LENGTH:
|
|
|
|
/* Fixed length resource, length must match exactly */
|
|
|
|
if (ResourceLength != MinimumResourceLength)
|
|
{
|
|
return (AE_AML_BAD_RESOURCE_LENGTH);
|
|
}
|
|
break;
|
|
|
|
case ACPI_VARIABLE_LENGTH:
|
|
|
|
/* Variable length resource, length must be at least the minimum */
|
|
|
|
if (ResourceLength < MinimumResourceLength)
|
|
{
|
|
return (AE_AML_BAD_RESOURCE_LENGTH);
|
|
}
|
|
break;
|
|
|
|
case ACPI_SMALL_VARIABLE_LENGTH:
|
|
|
|
/* Small variable length resource, length can be (Min) or (Min-1) */
|
|
|
|
if ((ResourceLength > MinimumResourceLength) ||
|
|
(ResourceLength < (MinimumResourceLength - 1)))
|
|
{
|
|
return (AE_AML_BAD_RESOURCE_LENGTH);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Shouldn't happen (because of validation earlier), but be sure */
|
|
|
|
return (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
|
|
/* Optionally return the resource table index */
|
|
|
|
if (ReturnIndex)
|
|
{
|
|
*ReturnIndex = ResourceIndex;
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtGetResourceType
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: The Resource Type with no extraneous bits (except the
|
|
* Large/Small descriptor bit -- this is left alone)
|
|
*
|
|
* DESCRIPTION: Extract the Resource Type/Name from the first byte of
|
|
* a resource descriptor.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT8
|
|
AcpiUtGetResourceType (
|
|
void *Aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
|
|
{
|
|
/* Large Resource Type -- bits 6:0 contain the name */
|
|
|
|
return (ACPI_GET8 (Aml));
|
|
}
|
|
else
|
|
{
|
|
/* Small Resource Type -- bits 6:3 contain the name */
|
|
|
|
return ((UINT8) (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtGetResourceLength
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Byte Length
|
|
*
|
|
* DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
|
|
* definition, this does not include the size of the descriptor
|
|
* header or the length field itself.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT16
|
|
AcpiUtGetResourceLength (
|
|
void *Aml)
|
|
{
|
|
ACPI_RS_LENGTH ResourceLength;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
|
|
{
|
|
/* Large Resource type -- bytes 1-2 contain the 16-bit length */
|
|
|
|
ACPI_MOVE_16_TO_16 (&ResourceLength, ACPI_ADD_PTR (UINT8, Aml, 1));
|
|
|
|
}
|
|
else
|
|
{
|
|
/* Small Resource type -- bits 2:0 of byte 0 contain the length */
|
|
|
|
ResourceLength = (UINT16) (ACPI_GET8 (Aml) &
|
|
ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
|
|
}
|
|
|
|
return (ResourceLength);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtGetResourceHeaderLength
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Length of the AML header (depends on large/small descriptor)
|
|
*
|
|
* DESCRIPTION: Get the length of the header for this resource.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT8
|
|
AcpiUtGetResourceHeaderLength (
|
|
void *Aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/* Examine the large/small bit in the resource header */
|
|
|
|
if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
|
|
{
|
|
return (sizeof (AML_RESOURCE_LARGE_HEADER));
|
|
}
|
|
else
|
|
{
|
|
return (sizeof (AML_RESOURCE_SMALL_HEADER));
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtGetDescriptorLength
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Byte length
|
|
*
|
|
* DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
|
|
* length of the descriptor header and the length field itself.
|
|
* Used to walk descriptor lists.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiUtGetDescriptorLength (
|
|
void *Aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/*
|
|
* Get the Resource Length (does not include header length) and add
|
|
* the header length (depends on if this is a small or large resource)
|
|
*/
|
|
return (AcpiUtGetResourceLength (Aml) +
|
|
AcpiUtGetResourceHeaderLength (Aml));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtGetResourceEndTag
|
|
*
|
|
* PARAMETERS: ObjDesc - The resource template buffer object
|
|
* EndTag - Where the pointer to the EndTag is returned
|
|
*
|
|
* RETURN: Status, pointer to the end tag
|
|
*
|
|
* DESCRIPTION: Find the EndTag resource descriptor in an AML resource template
|
|
* Note: allows a buffer length of zero.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtGetResourceEndTag (
|
|
ACPI_OPERAND_OBJECT *ObjDesc,
|
|
UINT8 **EndTag)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (UtGetResourceEndTag);
|
|
|
|
|
|
/* Allow a buffer length of zero */
|
|
|
|
if (!ObjDesc->Buffer.Length)
|
|
{
|
|
*EndTag = ObjDesc->Buffer.Pointer;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Validate the template and get a pointer to the EndTag */
|
|
|
|
Status = AcpiUtWalkAmlResources (ObjDesc->Buffer.Pointer,
|
|
ObjDesc->Buffer.Length, NULL, EndTag);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|