688 lines
22 KiB
C
688 lines
22 KiB
C
/*******************************************************************************
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*
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* Module Name: rsirq - IRQ resource descriptors
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* $Revision: 38 $
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*
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******************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __RSIRQ_C__
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#include "acpi.h"
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#include "acresrc.h"
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME ("rsirq")
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsIrqResource
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*
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* PARAMETERS: ByteStreamBuffer - Pointer to the resource input byte
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* stream
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* BytesConsumed - Pointer to where the number of bytes
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* consumed the ByteStreamBuffer is
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* returned
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* OutputBuffer - Pointer to the return data buffer
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* StructureSize - Pointer to where the number of bytes
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* in the return data struct is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the resource byte stream and fill out the appropriate
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* structure pointed to by the OutputBuffer. Return the
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* number of bytes consumed from the byte stream.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsIrqResource (
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UINT8 *ByteStreamBuffer,
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ACPI_SIZE *BytesConsumed,
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UINT8 **OutputBuffer,
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ACPI_SIZE *StructureSize)
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{
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UINT8 *Buffer = ByteStreamBuffer;
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ACPI_RESOURCE *OutputStruct = (void *) *OutputBuffer;
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UINT16 Temp16 = 0;
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UINT8 Temp8 = 0;
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UINT8 Index;
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UINT8 i;
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ACPI_SIZE StructSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_IRQ);
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ACPI_FUNCTION_TRACE ("RsIrqResource");
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/*
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* The number of bytes consumed are contained in the descriptor
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* (Bits:0-1)
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*/
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Temp8 = *Buffer;
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*BytesConsumed = (Temp8 & 0x03) + 1;
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OutputStruct->Id = ACPI_RSTYPE_IRQ;
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/*
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* Point to the 16-bits of Bytes 1 and 2
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*/
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Buffer += 1;
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ACPI_MOVE_16_TO_16 (&Temp16, Buffer);
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OutputStruct->Data.Irq.NumberOfInterrupts = 0;
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/* Decode the IRQ bits */
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for (i = 0, Index = 0; Index < 16; Index++)
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{
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if ((Temp16 >> Index) & 0x01)
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{
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OutputStruct->Data.Irq.Interrupts[i] = Index;
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i++;
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}
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}
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/* Zero interrupts is valid */
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OutputStruct->Data.Irq.NumberOfInterrupts = i;
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if (i > 0)
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{
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/*
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* Calculate the structure size based upon the number of interrupts
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*/
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StructSize += ((ACPI_SIZE) i - 1) * 4;
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}
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/*
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* Point to Byte 3 if it is used
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*/
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if (4 == *BytesConsumed)
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{
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Buffer += 2;
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Temp8 = *Buffer;
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/*
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* Check for HE, LL interrupts
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*/
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switch (Temp8 & 0x09)
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{
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case 0x01: /* HE */
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OutputStruct->Data.Irq.EdgeLevel = ACPI_EDGE_SENSITIVE;
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OutputStruct->Data.Irq.ActiveHighLow = ACPI_ACTIVE_HIGH;
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break;
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case 0x08: /* LL */
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OutputStruct->Data.Irq.EdgeLevel = ACPI_LEVEL_SENSITIVE;
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OutputStruct->Data.Irq.ActiveHighLow = ACPI_ACTIVE_LOW;
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break;
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default:
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/*
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* Only _LL and _HE polarity/trigger interrupts
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* are allowed (ACPI spec, section "IRQ Format")
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* so 0x00 and 0x09 are illegal.
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
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"Invalid interrupt polarity/trigger in resource list, %X\n", Temp8));
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return_ACPI_STATUS (AE_BAD_DATA);
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}
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/*
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* Check for sharable
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*/
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OutputStruct->Data.Irq.SharedExclusive = (Temp8 >> 3) & 0x01;
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}
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else
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{
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/*
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* Assume Edge Sensitive, Active High, Non-Sharable
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* per ACPI Specification
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*/
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OutputStruct->Data.Irq.EdgeLevel = ACPI_EDGE_SENSITIVE;
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OutputStruct->Data.Irq.ActiveHighLow = ACPI_ACTIVE_HIGH;
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OutputStruct->Data.Irq.SharedExclusive = ACPI_EXCLUSIVE;
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}
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/*
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* Set the Length parameter
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*/
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OutputStruct->Length = (UINT32) StructSize;
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/*
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* Return the final size of the structure
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*/
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*StructureSize = StructSize;
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsIrqStream
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*
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* PARAMETERS: LinkedList - Pointer to the resource linked list
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* OutputBuffer - Pointer to the user's return buffer
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* BytesConsumed - Pointer to where the number of bytes
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* used in the OutputBuffer is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the linked list resource structure and fills in the
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* the appropriate bytes in a byte stream
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsIrqStream (
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ACPI_RESOURCE *LinkedList,
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UINT8 **OutputBuffer,
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ACPI_SIZE *BytesConsumed)
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{
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UINT8 *Buffer = *OutputBuffer;
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UINT16 Temp16 = 0;
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UINT8 Temp8 = 0;
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UINT8 Index;
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BOOLEAN IRQInfoByteNeeded;
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ACPI_FUNCTION_TRACE ("RsIrqStream");
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/*
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* The descriptor field is set based upon whether a third byte is
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* needed to contain the IRQ Information.
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*/
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if (ACPI_EDGE_SENSITIVE == LinkedList->Data.Irq.EdgeLevel &&
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ACPI_ACTIVE_HIGH == LinkedList->Data.Irq.ActiveHighLow &&
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ACPI_EXCLUSIVE == LinkedList->Data.Irq.SharedExclusive)
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{
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*Buffer = 0x22;
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IRQInfoByteNeeded = FALSE;
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}
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else
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{
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*Buffer = 0x23;
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IRQInfoByteNeeded = TRUE;
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}
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Buffer += 1;
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Temp16 = 0;
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/*
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* Loop through all of the interrupts and set the mask bits
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*/
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for(Index = 0;
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Index < LinkedList->Data.Irq.NumberOfInterrupts;
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Index++)
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{
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Temp8 = (UINT8) LinkedList->Data.Irq.Interrupts[Index];
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Temp16 |= 0x1 << Temp8;
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}
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ACPI_MOVE_16_TO_16 (Buffer, &Temp16);
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Buffer += 2;
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/*
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* Set the IRQ Info byte if needed.
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*/
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if (IRQInfoByteNeeded)
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{
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Temp8 = 0;
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Temp8 = (UINT8) ((LinkedList->Data.Irq.SharedExclusive &
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0x01) << 4);
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if (ACPI_LEVEL_SENSITIVE == LinkedList->Data.Irq.EdgeLevel &&
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ACPI_ACTIVE_LOW == LinkedList->Data.Irq.ActiveHighLow)
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{
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Temp8 |= 0x08;
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}
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else
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{
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Temp8 |= 0x01;
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}
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*Buffer = Temp8;
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Buffer += 1;
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}
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/*
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* Return the number of bytes consumed in this operation
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*/
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*BytesConsumed = ACPI_PTR_DIFF (Buffer, *OutputBuffer);
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsExtendedIrqResource
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*
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* PARAMETERS: ByteStreamBuffer - Pointer to the resource input byte
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* stream
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* BytesConsumed - Pointer to where the number of bytes
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* consumed the ByteStreamBuffer is
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* returned
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* OutputBuffer - Pointer to the return data buffer
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* StructureSize - Pointer to where the number of bytes
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* in the return data struct is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the resource byte stream and fill out the appropriate
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* structure pointed to by the OutputBuffer. Return the
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* number of bytes consumed from the byte stream.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsExtendedIrqResource (
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UINT8 *ByteStreamBuffer,
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ACPI_SIZE *BytesConsumed,
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UINT8 **OutputBuffer,
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ACPI_SIZE *StructureSize)
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{
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UINT8 *Buffer = ByteStreamBuffer;
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ACPI_RESOURCE *OutputStruct = (void *) *OutputBuffer;
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UINT16 Temp16 = 0;
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UINT8 Temp8 = 0;
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UINT8 *TempPtr;
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UINT8 Index;
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ACPI_SIZE StructSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_EXT_IRQ);
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ACPI_FUNCTION_TRACE ("RsExtendedIrqResource");
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/*
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* Point past the Descriptor to get the number of bytes consumed
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*/
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Buffer += 1;
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ACPI_MOVE_16_TO_16 (&Temp16, Buffer);
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/* Validate minimum descriptor length */
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if (Temp16 < 6)
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{
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return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
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}
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*BytesConsumed = Temp16 + 3;
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OutputStruct->Id = ACPI_RSTYPE_EXT_IRQ;
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/*
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* Point to the Byte3
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*/
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Buffer += 2;
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Temp8 = *Buffer;
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OutputStruct->Data.ExtendedIrq.ProducerConsumer = Temp8 & 0x01;
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/*
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* Check for Interrupt Mode
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*
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* The definition of an Extended IRQ changed between ACPI spec v1.0b
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* and ACPI spec 2.0 (section 6.4.3.6 in both).
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*
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* - Edge/Level are defined opposite in the table vs the headers
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*/
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OutputStruct->Data.ExtendedIrq.EdgeLevel =
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(Temp8 & 0x2) ? ACPI_EDGE_SENSITIVE : ACPI_LEVEL_SENSITIVE;
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/*
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* Check Interrupt Polarity
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*/
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OutputStruct->Data.ExtendedIrq.ActiveHighLow = (Temp8 >> 2) & 0x1;
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/*
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* Check for sharable
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*/
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OutputStruct->Data.ExtendedIrq.SharedExclusive = (Temp8 >> 3) & 0x01;
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/*
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* Point to Byte4 (IRQ Table length)
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*/
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Buffer += 1;
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Temp8 = *Buffer;
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/* Must have at least one IRQ */
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if (Temp8 < 1)
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{
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return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
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}
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OutputStruct->Data.ExtendedIrq.NumberOfInterrupts = Temp8;
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/*
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* Add any additional structure size to properly calculate
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* the next pointer at the end of this function
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*/
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StructSize += (Temp8 - 1) * 4;
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/*
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* Point to Byte5 (First IRQ Number)
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*/
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Buffer += 1;
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/*
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* Cycle through every IRQ in the table
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*/
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for (Index = 0; Index < Temp8; Index++)
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{
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ACPI_MOVE_32_TO_32 (
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&OutputStruct->Data.ExtendedIrq.Interrupts[Index], Buffer);
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/* Point to the next IRQ */
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Buffer += 4;
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}
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/*
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* This will leave us pointing to the Resource Source Index
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* If it is present, then save it off and calculate the
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* pointer to where the null terminated string goes:
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* Each Interrupt takes 32-bits + the 5 bytes of the
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* stream that are default.
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*
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* Note: Some resource descriptors will have an additional null, so
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* we add 1 to the length.
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*/
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if (*BytesConsumed >
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((ACPI_SIZE) OutputStruct->Data.ExtendedIrq.NumberOfInterrupts * 4) + (5 + 1))
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{
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/* Dereference the Index */
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Temp8 = *Buffer;
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OutputStruct->Data.ExtendedIrq.ResourceSource.Index = (UINT32) Temp8;
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/* Point to the String */
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Buffer += 1;
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/*
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* Point the String pointer to the end of this structure.
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*/
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OutputStruct->Data.ExtendedIrq.ResourceSource.StringPtr =
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(char *)((char *) OutputStruct + StructSize);
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TempPtr = (UINT8 *) OutputStruct->Data.ExtendedIrq.ResourceSource.StringPtr;
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/* Copy the string into the buffer */
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Index = 0;
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while (0x00 != *Buffer)
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{
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*TempPtr = *Buffer;
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TempPtr += 1;
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Buffer += 1;
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Index += 1;
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}
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/*
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* Add the terminating null
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*/
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*TempPtr = 0x00;
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OutputStruct->Data.ExtendedIrq.ResourceSource.StringLength = Index + 1;
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/*
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* In order for the StructSize to fall on a 32-bit boundary,
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* calculate the length of the string and expand the
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* StructSize to the next 32-bit boundary.
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*/
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Temp8 = (UINT8) (Index + 1);
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StructSize += ACPI_ROUND_UP_TO_32BITS (Temp8);
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}
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else
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{
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OutputStruct->Data.ExtendedIrq.ResourceSource.Index = 0x00;
|
|
OutputStruct->Data.ExtendedIrq.ResourceSource.StringLength = 0;
|
|
OutputStruct->Data.ExtendedIrq.ResourceSource.StringPtr = NULL;
|
|
}
|
|
|
|
/*
|
|
* Set the Length parameter
|
|
*/
|
|
OutputStruct->Length = (UINT32) StructSize;
|
|
|
|
/*
|
|
* Return the final size of the structure
|
|
*/
|
|
*StructureSize = StructSize;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRsExtendedIrqStream (
|
|
ACPI_RESOURCE *LinkedList,
|
|
UINT8 **OutputBuffer,
|
|
ACPI_SIZE *BytesConsumed)
|
|
{
|
|
UINT8 *Buffer = *OutputBuffer;
|
|
UINT16 *LengthField;
|
|
UINT8 Temp8 = 0;
|
|
UINT8 Index;
|
|
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
|
|
*/
|
|
LengthField = ACPI_CAST_PTR (UINT16, Buffer);
|
|
Buffer += 2;
|
|
|
|
/*
|
|
* Set the Interrupt vector flags
|
|
*/
|
|
Temp8 = (UINT8)(LinkedList->Data.ExtendedIrq.ProducerConsumer & 0x01);
|
|
Temp8 |= ((LinkedList->Data.ExtendedIrq.SharedExclusive & 0x01) << 3);
|
|
|
|
/*
|
|
* 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
|
|
*
|
|
* - Edge/Level are defined opposite in the table vs the headers
|
|
*/
|
|
if (ACPI_EDGE_SENSITIVE == LinkedList->Data.ExtendedIrq.EdgeLevel)
|
|
{
|
|
Temp8 |= 0x2;
|
|
}
|
|
|
|
/*
|
|
* Set the Interrupt Polarity
|
|
*/
|
|
Temp8 |= ((LinkedList->Data.ExtendedIrq.ActiveHighLow & 0x1) << 2);
|
|
|
|
*Buffer = Temp8;
|
|
Buffer += 1;
|
|
|
|
/*
|
|
* Set the Interrupt table length
|
|
*/
|
|
Temp8 = (UINT8) LinkedList->Data.ExtendedIrq.NumberOfInterrupts;
|
|
|
|
*Buffer = Temp8;
|
|
Buffer += 1;
|
|
|
|
for (Index = 0; Index < LinkedList->Data.ExtendedIrq.NumberOfInterrupts;
|
|
Index++)
|
|
{
|
|
ACPI_MOVE_32_TO_32 (Buffer,
|
|
&LinkedList->Data.ExtendedIrq.Interrupts[Index]);
|
|
Buffer += 4;
|
|
}
|
|
|
|
/*
|
|
* Resource Source Index and Resource Source are optional
|
|
*/
|
|
if (0 != LinkedList->Data.ExtendedIrq.ResourceSource.StringLength)
|
|
{
|
|
*Buffer = (UINT8) LinkedList->Data.ExtendedIrq.ResourceSource.Index;
|
|
Buffer += 1;
|
|
|
|
TempPointer = (char *) Buffer;
|
|
|
|
/*
|
|
* Copy the string
|
|
*/
|
|
ACPI_STRCPY (TempPointer,
|
|
LinkedList->Data.ExtendedIrq.ResourceSource.StringPtr);
|
|
|
|
/*
|
|
* Buffer needs to be set to the length of the sting + one for the
|
|
* terminating null
|
|
*/
|
|
Buffer += (ACPI_SIZE)(ACPI_STRLEN (LinkedList->Data.ExtendedIrq.ResourceSource.StringPtr) + 1);
|
|
}
|
|
|
|
/*
|
|
* Return the number of bytes consumed in this operation
|
|
*/
|
|
*BytesConsumed = ACPI_PTR_DIFF (Buffer, *OutputBuffer);
|
|
|
|
/*
|
|
* Set the length field to the number of bytes consumed
|
|
* minus the header size (3 bytes)
|
|
*/
|
|
*LengthField = (UINT16) (*BytesConsumed - 3);
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|