/*******************************************************************************
*
* Module Name: dmresrc.c - Resource Descriptor disassembly
*
******************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2017, 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.
*
*****************************************************************************
*
* Alternatively, you may choose to be licensed under the terms of the
* following license:
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* 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 DAMAGE.
*
* Alternatively, you may choose to be licensed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
*****************************************************************************/
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acdisasm.h>
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME ("dbresrc")
/* Dispatch tables for Resource disassembly functions */
static ACPI_RESOURCE_HANDLER AcpiGbl_DmResourceDispatch [] =
{
/* Small descriptors */
NULL, /* 0x00, Reserved */
NULL, /* 0x01, Reserved */
NULL, /* 0x02, Reserved */
NULL, /* 0x03, Reserved */
AcpiDmIrqDescriptor, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */
AcpiDmDmaDescriptor, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */
AcpiDmStartDependentDescriptor, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */
AcpiDmEndDependentDescriptor, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */
AcpiDmIoDescriptor, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */
AcpiDmFixedIoDescriptor, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */
AcpiDmFixedDmaDescriptor, /* 0x0A, ACPI_RESOURCE_NAME_FIXED_DMA */
NULL, /* 0x0B, Reserved */
NULL, /* 0x0C, Reserved */
NULL, /* 0x0D, Reserved */
AcpiDmVendorSmallDescriptor, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */
NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */
/* Large descriptors */
NULL, /* 0x00, Reserved */
AcpiDmMemory24Descriptor, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */
AcpiDmGenericRegisterDescriptor,/* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */
NULL, /* 0x03, Reserved */
AcpiDmVendorLargeDescriptor, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */
AcpiDmMemory32Descriptor, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */
AcpiDmFixedMemory32Descriptor, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */
AcpiDmDwordDescriptor, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */
AcpiDmWordDescriptor, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */
AcpiDmInterruptDescriptor, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */
AcpiDmQwordDescriptor, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */
AcpiDmExtendedDescriptor, /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */
AcpiDmGpioDescriptor, /* 0x0C, ACPI_RESOURCE_NAME_GPIO */
AcpiDmPinFunctionDescriptor, /* 0x0D, ACPI_RESOURCE_NAME_PIN_FUNCTION */
AcpiDmSerialBusDescriptor, /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS */
AcpiDmPinConfigDescriptor, /* 0x0F, ACPI_RESOURCE_NAME_PIN_CONFIG */
AcpiDmPinGroupDescriptor, /* 0x10, ACPI_RESOURCE_NAME_PIN_GROUP */
AcpiDmPinGroupFunctionDescriptor, /* 0x11, ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION */
AcpiDmPinGroupConfigDescriptor, /* 0x12, ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG */
};
/* Only used for single-threaded applications */
/* TBD: remove when name is passed as parameter to the dump functions */
static UINT32 ResourceName;
/*******************************************************************************
*
* FUNCTION: AcpiDmDescriptorName
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Emit a name for the descriptor if one is present (indicated
* by the name being changed from the default name.) A name is only
* emitted if a reference to the descriptor has been made somewhere
* in the original ASL code.
*
******************************************************************************/
void
AcpiDmDescriptorName (
void)
{
if (ResourceName == ACPI_DEFAULT_RESNAME)
{
return;
}
AcpiOsPrintf ("%4.4s", (char *) &ResourceName);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmDumpInteger*
*
* PARAMETERS: Value - Value to emit
* Name - Associated name (emitted as a comment)
*
* RETURN: None
*
* DESCRIPTION: Integer output helper functions
*
******************************************************************************/
void
AcpiDmDumpInteger8 (
UINT8 Value,
const char *Name)
{
AcpiOsPrintf ("0x%2.2X, // %s\n", Value, Name);
}
void
AcpiDmDumpInteger16 (
UINT16 Value,
const char *Name)
{
AcpiOsPrintf ("0x%4.4X, // %s\n", Value, Name);
}
void
AcpiDmDumpInteger32 (
UINT32 Value,
const char *Name)
{
AcpiOsPrintf ("0x%8.8X, // %s\n", Value, Name);
}
void
AcpiDmDumpInteger64 (
UINT64 Value,
const char *Name)
{
AcpiOsPrintf ("0x%8.8X%8.8X, // %s\n", ACPI_FORMAT_UINT64 (Value), Name);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmBitList
*
* PARAMETERS: Mask - 16-bit value corresponding to 16 interrupt
* or DMA values
*
* RETURN: None
*
* DESCRIPTION: Dump a bit mask as a list of individual interrupt/DMA levels.
*
******************************************************************************/
void
AcpiDmBitList (
UINT16 Mask)
{
UINT32 i;
BOOLEAN Previous = FALSE;
/* Open the initializer list */
AcpiOsPrintf ("{");
/* Examine each bit */
for (i = 0; i < 16; i++)
{
/* Only interested in bits that are set to 1 */
if (Mask & 1)
{
if (Previous)
{
AcpiOsPrintf (",");
}
Previous = TRUE;
AcpiOsPrintf ("%u", i);
}
Mask >>= 1;
}
/* Close list */
AcpiOsPrintf ("}\n");
}
/*******************************************************************************
*
* FUNCTION: AcpiDmResourceTemplate
*
* PARAMETERS: Info - Curent parse tree walk info
* ByteData - Pointer to the byte list data
* ByteCount - Length of the byte list
*
* RETURN: None
*
* DESCRIPTION: Dump the contents of a Resource Template containing a set of
* Resource Descriptors.
*
******************************************************************************/
void
AcpiDmResourceTemplate (
ACPI_OP_WALK_INFO *Info,
ACPI_PARSE_OBJECT *Op,
UINT8 *ByteData,
UINT32 ByteCount)
{
ACPI_STATUS Status;
UINT32 CurrentByteOffset;
UINT8 ResourceType;
UINT32 ResourceLength;
void *Aml;
UINT32 Level;
BOOLEAN DependentFns = FALSE;
UINT8 ResourceIndex;
ACPI_NAMESPACE_NODE *Node;
if (Op->Asl.AmlOpcode != AML_FIELD_OP)
{
Info->MappingOp = Op;
}
Level = Info->Level;
ResourceName = ACPI_DEFAULT_RESNAME;
Node = Op->Common.Node;
if (Node)
{
Node = Node->Child;
}
for (CurrentByteOffset = 0; CurrentByteOffset < ByteCount;)
{
Aml = &ByteData[CurrentByteOffset];
/* Get the descriptor type and length */
ResourceType = AcpiUtGetResourceType (Aml);
ResourceLength = AcpiUtGetResourceLength (Aml);
/* Validate the Resource Type and Resource Length */
Status = AcpiUtValidateResource (NULL, Aml, &ResourceIndex);
if (ACPI_FAILURE (Status))
{
AcpiOsPrintf (
"/*** Could not validate Resource, type (%X) %s***/\n",
ResourceType, AcpiFormatException (Status));
return;
}
/* Point to next descriptor */
CurrentByteOffset += AcpiUtGetDescriptorLength (Aml);
/* Descriptor pre-processing */
switch (ResourceType)
{
case ACPI_RESOURCE_NAME_START_DEPENDENT:
/* Finish a previous StartDependentFns */
if (DependentFns)
{
Level--;
AcpiDmIndent (Level);
AcpiOsPrintf ("}\n");
}
break;
case ACPI_RESOURCE_NAME_END_DEPENDENT:
Level--;
DependentFns = FALSE;
break;
case ACPI_RESOURCE_NAME_END_TAG:
/* Normal exit, the resource list is finished */
if (DependentFns)
{
/*
* Close an open StartDependentDescriptor. This indicates a
* missing EndDependentDescriptor.
*/
Level--;
DependentFns = FALSE;
/* Go ahead and insert EndDependentFn() */
AcpiDmEndDependentDescriptor (Info, Aml, ResourceLength, Level);
AcpiDmIndent (Level);
AcpiOsPrintf (
"/*** Disassembler: inserted "
"missing EndDependentFn () ***/\n");
}
return;
default:
break;
}
/* Disassemble the resource structure */
if (Node)
{
ResourceName = Node->Name.Integer;
Node = Node->Peer;
}
AcpiGbl_DmResourceDispatch [ResourceIndex] (
Info, Aml, ResourceLength, Level);
/* Descriptor post-processing */
if (ResourceType == ACPI_RESOURCE_NAME_START_DEPENDENT)
{
DependentFns = TRUE;
Level++;
}
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmIsResourceTemplate
*
* PARAMETERS: WalkState - Current walk info
* Op - Buffer Op to be examined
*
* RETURN: Status. AE_OK if valid template
*
* DESCRIPTION: Walk a byte list to determine if it consists of a valid set
* of resource descriptors. Nothing is output.
*
******************************************************************************/
ACPI_STATUS
AcpiDmIsResourceTemplate (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_PARSE_OBJECT *NextOp;
UINT8 *Aml;
UINT8 *EndAml;
UINT32 BufferLength;
UINT32 DeclaredBufferLength;
/* This op must be a buffer */
if (Op->Common.AmlOpcode != AML_BUFFER_OP)
{
return (AE_TYPE);
}
/*
* Get the declared length of the buffer.
* This is the nn in "Buffer (nn)"
*/
NextOp = Op->Common.Value.Arg;
if (!NextOp)
{
AcpiOsPrintf ("NULL byte list in buffer\n");
return (AE_TYPE);
}
DeclaredBufferLength = NextOp->Common.Value.Size;
/* Get the length of the raw initialization byte list */
NextOp = NextOp->Common.Next;
if (!NextOp)
{
return (AE_TYPE);
}
Aml = NextOp->Named.Data;
BufferLength = NextOp->Common.Value.Size;
/*
* Any buffer smaller than one byte cannot possibly be a resource
* template. Two bytes could possibly be a "NULL" resource template
* with a lone end tag descriptor (as generated via
* "ResourceTemplate(){}"), but this would be an extremely unusual
* case, as the template would be essentially useless. The disassembler
* therefore does not recognize any two-byte buffer as a resource
* template.
*/
if (BufferLength <= 2)
{
return (AE_TYPE);
}
/*
* Not a template if declared buffer length != actual length of the
* intialization byte list. Because the resource macros will create
* a buffer of the exact required length (buffer length will be equal
* to the actual length).
*
* NOTE (April 2017): Resource templates with this issue have been
* seen in the field. We still don't want to attempt to disassemble
* a buffer like this to a resource template because this output
* would not match the original input buffer (it would be shorter
* than the original when the disassembled code is recompiled).
* Basically, a buffer like this appears to be hand crafted in the
* first place, so just emitting a buffer object instead of a
* resource template more closely resembles the original ASL code.
*/
if (DeclaredBufferLength != BufferLength)
{
return (AE_TYPE);
}
/* Walk the byte list, abort on any invalid descriptor type or length */
Status = AcpiUtWalkAmlResources (WalkState, Aml, BufferLength,
NULL, ACPI_CAST_INDIRECT_PTR (void, &EndAml));
if (ACPI_FAILURE (Status))
{
return (AE_TYPE);
}
/*
* For the resource template to be valid, one EndTag must appear
* at the very end of the ByteList, not before. (For proper disassembly
* of a ResourceTemplate, the buffer must not have any extra data after
* the EndTag.)
*/
if ((Aml + BufferLength - sizeof (AML_RESOURCE_END_TAG)) != EndAml)
{
return (AE_AML_NO_RESOURCE_END_TAG);
}
/*
* All resource descriptors are valid, therefore this list appears
* to be a valid resource template
*/
return (AE_OK);
}