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freebsd/sys/contrib/dev/acpica/dmresrc.c

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/*******************************************************************************
*
* Module Name: dmresrc.c - Resource Descriptor disassembly
* $Revision: 13 $
*
******************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2004, 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.
*
*****************************************************************************/
#include <contrib/dev/acpica/acpi.h>
#include <contrib/dev/acpica/amlcode.h>
#include <contrib/dev/acpica/acdisasm.h>
#ifdef ACPI_DISASSEMBLER
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME ("dbresrc")
/*******************************************************************************
*
* 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 ("%d", i);
}
Mask >>= 1;
}
/* Close list */
AcpiOsPrintf ("}\n");
}
/*******************************************************************************
*
* FUNCTION: AcpiDmResourceDescriptor
*
* 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 one ResourceTemplate descriptor.
*
******************************************************************************/
void
AcpiDmResourceDescriptor (
ACPI_OP_WALK_INFO *Info,
UINT8 *ByteData,
UINT32 ByteCount)
{
ACPI_NATIVE_UINT CurrentByteOffset;
UINT8 CurrentByte;
UINT8 DescriptorId;
UINT32 Length;
void *DescriptorBody;
UINT32 Level;
BOOLEAN DependentFns = FALSE;
Level = Info->Level;
for (CurrentByteOffset = 0; CurrentByteOffset < ByteCount; )
{
CurrentByte = ByteData[CurrentByteOffset];
DescriptorBody = &ByteData[CurrentByteOffset];
if (CurrentByte & ACPI_RDESC_TYPE_LARGE)
{
DescriptorId = CurrentByte;
Length = (* (ACPI_CAST_PTR (UINT16, &ByteData[CurrentByteOffset + 1])));
CurrentByteOffset += 3;
}
else
{
DescriptorId = (UINT8) (CurrentByte & 0xF8);
Length = (ByteData[CurrentByteOffset] & 0x7);
CurrentByteOffset += 1;
}
CurrentByteOffset += (ACPI_NATIVE_UINT) Length;
/* Determine type of resource */
switch (DescriptorId)
{
/*
* "Small" type descriptors
*/
case ACPI_RDESC_TYPE_IRQ_FORMAT:
AcpiDmIrqDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_DMA_FORMAT:
AcpiDmDmaDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_START_DEPENDENT:
/* Finish a previous StartDependentFns */
if (DependentFns)
{
Level--;
AcpiDmIndent (Level);
AcpiOsPrintf ("}\n");
}
AcpiDmStartDependentDescriptor (DescriptorBody, Length, Level);
DependentFns = TRUE;
Level++;
break;
case ACPI_RDESC_TYPE_END_DEPENDENT:
Level--;
DependentFns = FALSE;
AcpiDmEndDependentDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_IO_PORT:
AcpiDmIoDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_FIXED_IO_PORT:
AcpiDmFixedIoDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_SMALL_VENDOR:
AcpiDmVendorSmallDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_END_TAG:
if (DependentFns)
{
/*
* Close an open StartDependentDescriptor. This indicates a missing
* EndDependentDescriptor.
*/
Level--;
DependentFns = FALSE;
AcpiDmIndent (Level);
AcpiOsPrintf ("}\n");
AcpiDmIndent (Level);
AcpiOsPrintf ("/*** Missing EndDependentFunctions descriptor */");
/*
* We could fix the problem, but then the ASL would not match the AML
* So, we don't do this:
* AcpiDmEndDependentDescriptor (DescriptorBody, Length, Level);
*/
}
return;
/*
* "Large" type descriptors
*/
case ACPI_RDESC_TYPE_MEMORY_24:
AcpiDmMemory24Descriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_GENERAL_REGISTER:
AcpiDmGenericRegisterDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_LARGE_VENDOR:
AcpiDmVendorLargeDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_MEMORY_32:
AcpiDmMemory32Descriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
AcpiDmFixedMem32Descriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
AcpiDmDwordDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
AcpiDmWordDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
AcpiDmInterruptDescriptor (DescriptorBody, Length, Level);
break;
case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
AcpiDmQwordDescriptor (DescriptorBody, Length, Level);
break;
default:
/*
* Anything else is unrecognized.
*
* Since the entire resource buffer has been already walked and
* validated, this is a very serious error indicating that someone
* overwrote the buffer.
*/
AcpiOsPrintf ("/* Unknown Resource type (%X) */\n", DescriptorId);
return;
}
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmIsResourceDescriptor
*
* PARAMETERS: Op - Buffer Op to be examined
*
* RETURN: TRUE if this Buffer Op contains a valid resource
* descriptor.
*
* DESCRIPTION: Walk a byte list to determine if it consists of a valid set
* of resource descriptors. Nothing is output.
*
******************************************************************************/
BOOLEAN
AcpiDmIsResourceDescriptor (
ACPI_PARSE_OBJECT *Op)
{
UINT8 *ByteData;
UINT32 ByteCount;
ACPI_PARSE_OBJECT *NextOp;
ACPI_NATIVE_UINT CurrentByteOffset;
UINT8 CurrentByte;
UINT8 DescriptorId;
UINT32 Length;
/* This op must be a buffer */
if (Op->Common.AmlOpcode != AML_BUFFER_OP)
{
return FALSE;
}
/* Get to the ByteData list */
NextOp = Op->Common.Value.Arg;
NextOp = NextOp->Common.Next;
if (!NextOp)
{
return (FALSE);
}
/* Extract the data pointer and data length */
ByteCount = (UINT32) NextOp->Common.Value.Integer;
ByteData = NextOp->Named.Data;
/* Absolute minimum descriptor is an END_TAG (2 bytes) */
if (ByteCount < 2)
{
return (FALSE);
}
/* The list must have a valid 2-byte END_TAG */
if (ByteData[ByteCount-2] != (ACPI_RDESC_TYPE_END_TAG | 1))
{
return FALSE;
}
/*
* Walk the byte list. Abort on any invalid descriptor ID or
* or length
*/
for (CurrentByteOffset = 0; CurrentByteOffset < ByteCount;)
{
CurrentByte = ByteData[CurrentByteOffset];
/* Large or small resource? */
if (CurrentByte & ACPI_RDESC_TYPE_LARGE)
{
DescriptorId = CurrentByte;
Length = (* (ACPI_CAST_PTR (UINT16, (&ByteData[CurrentByteOffset + 1]))));
CurrentByteOffset += 3;
}
else
{
DescriptorId = (UINT8) (CurrentByte & 0xF8);
Length = (ByteData[CurrentByteOffset] & 0x7);
CurrentByteOffset += 1;
}
CurrentByteOffset += (ACPI_NATIVE_UINT) Length;
/* Determine type of resource */
switch (DescriptorId)
{
/*
* "Small" type descriptors
*/
case ACPI_RDESC_TYPE_IRQ_FORMAT:
case ACPI_RDESC_TYPE_DMA_FORMAT:
case ACPI_RDESC_TYPE_START_DEPENDENT:
case ACPI_RDESC_TYPE_END_DEPENDENT:
case ACPI_RDESC_TYPE_IO_PORT:
case ACPI_RDESC_TYPE_FIXED_IO_PORT:
case ACPI_RDESC_TYPE_SMALL_VENDOR:
/*
* "Large" type descriptors
*/
case ACPI_RDESC_TYPE_MEMORY_24:
case ACPI_RDESC_TYPE_GENERAL_REGISTER:
case ACPI_RDESC_TYPE_LARGE_VENDOR:
case ACPI_RDESC_TYPE_MEMORY_32:
case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
/* Valid descriptor ID, keep going */
break;
case ACPI_RDESC_TYPE_END_TAG:
/* We must be at the end of the ByteList */
if (CurrentByteOffset != ByteCount)
{
return (FALSE);
}
/* All descriptors/lengths valid, this is a valid descriptor */
return (TRUE);
default:
/* Bad descriptor, abort */
return (FALSE);
}
}
/* Did not find an END_TAG, something seriously wrong */
return (FALSE);
}
#endif
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