rsirq.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*******************************************************************************
*
* Module Name: rsirq - IRQ resource descriptors
* $Revision: 42 $
*
******************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2005, 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
* 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
* 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
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* 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 __RSIRQ_C__
#include "acpi.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME ("rsirq")
/*******************************************************************************
*
* FUNCTION: AcpiRsIrqResource
*
* PARAMETERS: ByteStreamBuffer - Pointer to the resource input byte
* stream
* BytesConsumed - Pointer to where the number of bytes
* consumed the ByteStreamBuffer is
* returned
* OutputBuffer - Pointer to the return data buffer
* StructureSize - Pointer to where the number of bytes
* in the return data struct is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the OutputBuffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
{
UINT8 i;
ACPI_FUNCTION_TRACE ("RsIrqResource");
/*
* The number of bytes consumed are contained in the descriptor
* (Bits:0-1)
*/
/* Point to the 16-bits of Bytes 1 and 2 */
Buffer += 1;
/* Decode the IRQ bits */
{
{
i++;
}
}
/* Zero interrupts is valid */
if (i > 0)
{
/* Calculate the structure size based upon the number of interrupts */
}
/* Point to Byte 3 if it is used */
if (4 == *BytesConsumed)
{
Buffer += 2;
/* Check for HE, LL interrupts */
switch (Temp8 & 0x09)
{
case 0x01: /* HE */
break;
case 0x08: /* LL */
break;
default:
/*
* are allowed (ACPI spec, section "IRQ Format")
* so 0x00 and 0x09 are illegal.
*/
Temp8));
}
/* Check for sharable */
}
else
{
/*
* Assume Edge Sensitive, Active High, Non-Sharable
* per ACPI Specification
*/
}
/* Set the Length parameter */
/* Return the final size of the structure */
}
/*******************************************************************************
*
* FUNCTION: AcpiRsIrqStream
*
* PARAMETERS: LinkedList - Pointer to the resource linked list
* OutputBuffer - Pointer to the user's return buffer
* BytesConsumed - Pointer to where the number of bytes
* used in the OutputBuffer is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
{
ACPI_FUNCTION_TRACE ("RsIrqStream");
/*
* The descriptor field is set based upon whether a third byte is
* needed to contain the IRQ Information.
*/
{
*Buffer = 0x22;
}
else
{
*Buffer = 0x23;
}
Buffer += 1;
Temp16 = 0;
/* Loop through all of the interrupts and set the mask bits */
for(Index = 0;
Index++)
{
}
Buffer += 2;
/* Set the IRQ Info byte if needed. */
if (IRQInfoByteNeeded)
{
Temp8 = 0;
0x01) << 4);
{
Temp8 |= 0x08;
}
else
{
Temp8 |= 0x01;
}
Buffer += 1;
}
/* Return the number of bytes consumed in this operation */
}
/*******************************************************************************
*
* FUNCTION: AcpiRsExtendedIrqResource
*
* PARAMETERS: ByteStreamBuffer - Pointer to the resource input byte
* stream
* BytesConsumed - Pointer to where the number of bytes
* consumed the ByteStreamBuffer is
* returned
* OutputBuffer - Pointer to the return data buffer
* StructureSize - Pointer to where the number of bytes
* in the return data struct is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the OutputBuffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
{
ACPI_FUNCTION_TRACE ("RsExtendedIrqResource");
/* Point past the Descriptor to get the number of bytes consumed */
Buffer += 1;
/* Validate minimum descriptor length */
if (Temp16 < 6)
{
}
/* Point to the Byte3 */
Buffer += 2;
/*
* Check for Interrupt Mode
*
* The definition of an Extended IRQ changed between ACPI spec v1.0b
* and ACPI spec 2.0 (section 6.4.3.6 in both).
*
*/
/* Check Interrupt Polarity */
/* Check for sharable */
/* Point to Byte4 (IRQ Table length) */
Buffer += 1;
/* Must have at least one IRQ */
if (Temp8 < 1)
{
}
/*
* Add any additional structure size to properly calculate
* the next pointer at the end of this function
*/
/* Point to Byte5 (First IRQ Number) */
Buffer += 1;
/* Cycle through every IRQ in the table */
{
/* Point to the next IRQ */
Buffer += 4;
}
/*
* This will leave us pointing to the Resource Source Index
* If it is present, then save it off and calculate the
* pointer to where the null terminated string goes:
* Each Interrupt takes 32-bits + the 5 bytes of the
* stream that are default.
*
* Note: Some resource descriptors will have an additional null, so
* we add 1 to the length.
*/
if (*BytesConsumed >
(5 + 1))
{
/* Dereference the Index */
/* Point to the String */
Buffer += 1;
/* Point the String pointer to the end of this structure. */
(char *)((char *) OutputStruct + StructSize);
/* Copy the string into the buffer */
Index = 0;
while (0x00 != *Buffer)
{
TempPtr += 1;
Buffer += 1;
Index += 1;
}
/* Add the terminating null */
*TempPtr = 0x00;
/*
* In order for the StructSize to fall on a 32-bit boundary,
* calculate the length of the string and expand the
* StructSize to the next 32-bit boundary.
*/
}
else
{
}
/* Set the Length parameter */
/* Return the final size of the structure */
}
/*******************************************************************************
*
* FUNCTION: AcpiRsExtendedIrqStream
*
* PARAMETERS: LinkedList - Pointer to the resource linked list
* OutputBuffer - Pointer to the user's return buffer
* BytesConsumed - Pointer to where the number of bytes
* used in the OutputBuffer is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
{
char *TempPointer = NULL;
ACPI_FUNCTION_TRACE ("RsExtendedIrqStream");
/* The descriptor field is static */
*Buffer = 0x89;
Buffer += 1;
/* Set a pointer to the Length field - to be filled in later */
Buffer += 2;
/* Set the Interrupt vector flags */
/*
* Set the Interrupt Mode
*
* The definition of an Extended IRQ changed between ACPI spec v1.0b
* and ACPI spec 2.0 (section 6.4.3.6 in both). This code does not
* implement the more restrictive definition of 1.0b
*
*/
{
Temp8 |= 0x2;
}
/* Set the Interrupt Polarity */
Buffer += 1;
/* Set the Interrupt table length */
Buffer += 1;
Index++)
{
Buffer += 4;
}
/* Resource Source Index and Resource Source are optional */
{
Buffer += 1;
TempPointer = (char *) Buffer;
/* Copy the string */
/*
* Buffer needs to be set to the length of the sting + one for the
* terminating null
*/
}
/* Return the number of bytes consumed in this operation */
/*
* Set the length field to the number of bytes consumed
* minus the header size (3 bytes)
*/
}