616 lines
20 KiB
C
616 lines
20 KiB
C
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/******************************************************************************
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*
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* Module Name: exregion - ACPI default OpRegion (address space) handlers
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* $Revision: 80 $
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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 - 2002, 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 __EXREGION_C__
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#include "acpi.h"
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#include "acinterp.h"
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#define _COMPONENT ACPI_EXECUTER
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ACPI_MODULE_NAME ("exregion")
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/*******************************************************************************
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*
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* FUNCTION: AcpiExSystemMemorySpaceHandler
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*
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* PARAMETERS: Function - Read or Write operation
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* Address - Where in the space to read or write
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* BitWidth - Field width in bits (8, 16, or 32)
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* Value - Pointer to in or out value
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* HandlerContext - Pointer to Handler's context
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* RegionContext - Pointer to context specific to the
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* accessed region
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*
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* RETURN: Status
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*
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* DESCRIPTION: Handler for the System Memory address space (Op Region)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExSystemMemorySpaceHandler (
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UINT32 Function,
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ACPI_PHYSICAL_ADDRESS Address,
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UINT32 BitWidth,
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ACPI_INTEGER *Value,
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void *HandlerContext,
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void *RegionContext)
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{
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ACPI_STATUS Status = AE_OK;
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void *LogicalAddrPtr = NULL;
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ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext;
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UINT32 Length;
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ACPI_SIZE WindowSize;
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#ifndef _HW_ALIGNMENT_SUPPORT
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UINT32 Remainder;
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#endif
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ACPI_FUNCTION_TRACE ("ExSystemMemorySpaceHandler");
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/* Validate and translate the bit width */
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switch (BitWidth)
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{
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case 8:
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Length = 1;
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break;
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case 16:
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Length = 2;
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break;
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case 32:
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Length = 4;
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break;
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case 64:
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Length = 8;
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break;
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default:
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid SystemMemory width %d\n",
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BitWidth));
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return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
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}
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#ifndef _HW_ALIGNMENT_SUPPORT
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/*
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* Hardware does not support non-aligned data transfers, we must verify
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* the request.
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*/
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(void) AcpiUtShortDivide ((ACPI_INTEGER *) &Address, Length, NULL, &Remainder);
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if (Remainder != 0)
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{
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return_ACPI_STATUS (AE_AML_ALIGNMENT);
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}
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#endif
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/*
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* Does the request fit into the cached memory mapping?
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* Is 1) Address below the current mapping? OR
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* 2) Address beyond the current mapping?
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*/
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if ((Address < MemInfo->MappedPhysicalAddress) ||
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(((ACPI_INTEGER) Address + Length) >
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((ACPI_INTEGER) MemInfo->MappedPhysicalAddress + MemInfo->MappedLength)))
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{
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/*
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* The request cannot be resolved by the current memory mapping;
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* Delete the existing mapping and create a new one.
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*/
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if (MemInfo->MappedLength)
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{
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/* Valid mapping, delete it */
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AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress,
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MemInfo->MappedLength);
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}
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/*
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* Don't attempt to map memory beyond the end of the region, and
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* constrain the maximum mapping size to something reasonable.
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*/
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WindowSize = (ACPI_SIZE) ((MemInfo->Address + MemInfo->Length) - Address);
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if (WindowSize > SYSMEM_REGION_WINDOW_SIZE)
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{
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WindowSize = SYSMEM_REGION_WINDOW_SIZE;
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}
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/* Create a new mapping starting at the address given */
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Status = AcpiOsMapMemory (Address, WindowSize,
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(void **) &MemInfo->MappedLogicalAddress);
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %8.8X%8.8X, size %X\n",
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ACPI_HIDWORD (Address), ACPI_LODWORD (Address), (UINT32) WindowSize));
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MemInfo->MappedLength = 0;
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return_ACPI_STATUS (Status);
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}
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/* Save the physical address and mapping size */
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MemInfo->MappedPhysicalAddress = Address;
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MemInfo->MappedLength = WindowSize;
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}
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/*
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* Generate a logical pointer corresponding to the address we want to
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* access
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*/
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LogicalAddrPtr = MemInfo->MappedLogicalAddress +
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((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress);
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"SystemMemory %d (%d width) Address=%8.8X%8.8X\n", Function, BitWidth,
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ACPI_HIDWORD (Address), ACPI_LODWORD (Address)));
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/*
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* Perform the memory read or write
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*
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* Note: For machines that do not support non-aligned transfers, the target
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* address was checked for alignment above. We do not attempt to break the
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* transfer up into smaller (byte-size) chunks because the AML specifically
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* asked for a transfer width that the hardware may require.
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*/
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switch (Function)
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{
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case ACPI_READ:
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*Value = 0;
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switch (BitWidth)
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{
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case 8:
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*Value = (ACPI_INTEGER) *((UINT8 *) LogicalAddrPtr);
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break;
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case 16:
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*Value = (ACPI_INTEGER) *((UINT16 *) LogicalAddrPtr);
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break;
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case 32:
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*Value = (ACPI_INTEGER) *((UINT32 *) LogicalAddrPtr);
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break;
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#if ACPI_MACHINE_WIDTH != 16
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case 64:
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*Value = (ACPI_INTEGER) *((UINT64 *) LogicalAddrPtr);
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break;
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#endif
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default:
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/* BitWidth was already validated */
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break;
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}
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break;
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case ACPI_WRITE:
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switch (BitWidth)
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{
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case 8:
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*(UINT8 *) LogicalAddrPtr = (UINT8) *Value;
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break;
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case 16:
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*(UINT16 *) LogicalAddrPtr = (UINT16) *Value;
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break;
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case 32:
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*(UINT32 *) LogicalAddrPtr = (UINT32) *Value;
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break;
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#if ACPI_MACHINE_WIDTH != 16
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case 64:
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*(UINT64 *) LogicalAddrPtr = (UINT64) *Value;
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break;
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#endif
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default:
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/* BitWidth was already validated */
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break;
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}
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break;
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default:
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Status = AE_BAD_PARAMETER;
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break;
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}
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExSystemIoSpaceHandler
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*
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* PARAMETERS: Function - Read or Write operation
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* Address - Where in the space to read or write
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* BitWidth - Field width in bits (8, 16, or 32)
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* Value - Pointer to in or out value
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* HandlerContext - Pointer to Handler's context
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* RegionContext - Pointer to context specific to the
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* accessed region
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*
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* RETURN: Status
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*
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* DESCRIPTION: Handler for the System IO address space (Op Region)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExSystemIoSpaceHandler (
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UINT32 Function,
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ACPI_PHYSICAL_ADDRESS Address,
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UINT32 BitWidth,
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ACPI_INTEGER *Value,
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void *HandlerContext,
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void *RegionContext)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE ("ExSystemIoSpaceHandler");
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"SystemIO %d (%d width) Address=%8.8X%8.8X\n", Function, BitWidth,
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ACPI_HIDWORD (Address), ACPI_LODWORD (Address)));
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/* Decode the function parameter */
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switch (Function)
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{
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case ACPI_READ:
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*Value = 0;
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Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address, Value, BitWidth);
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break;
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case ACPI_WRITE:
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Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) Address, *Value, BitWidth);
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break;
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default:
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Status = AE_BAD_PARAMETER;
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break;
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}
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExPciConfigSpaceHandler
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*
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* PARAMETERS: Function - Read or Write operation
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* Address - Where in the space to read or write
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* BitWidth - Field width in bits (8, 16, or 32)
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* Value - Pointer to in or out value
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* HandlerContext - Pointer to Handler's context
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* RegionContext - Pointer to context specific to the
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* accessed region
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*
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* RETURN: Status
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*
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* DESCRIPTION: Handler for the PCI Config address space (Op Region)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExPciConfigSpaceHandler (
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UINT32 Function,
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ACPI_PHYSICAL_ADDRESS Address,
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UINT32 BitWidth,
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ACPI_INTEGER *Value,
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void *HandlerContext,
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void *RegionContext)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_PCI_ID *PciId;
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UINT16 PciRegister;
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ACPI_FUNCTION_TRACE ("ExPciConfigSpaceHandler");
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/*
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* The arguments to AcpiOs(Read|Write)PciConfiguration are:
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*
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* PciSegment is the PCI bus segment range 0-31
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* PciBus is the PCI bus number range 0-255
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* PciDevice is the PCI device number range 0-31
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* PciFunction is the PCI device function number
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* PciRegister is the Config space register range 0-255 bytes
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*
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* Value - input value for write, output address for read
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*
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*/
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PciId = (ACPI_PCI_ID *) RegionContext;
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PciRegister = (UINT16) (UINT32) Address;
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"PciConfig %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
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Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device,
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PciId->Function, PciRegister));
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switch (Function)
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{
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case ACPI_READ:
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*Value = 0;
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Status = AcpiOsReadPciConfiguration (PciId, PciRegister, Value, BitWidth);
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break;
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case ACPI_WRITE:
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Status = AcpiOsWritePciConfiguration (PciId, PciRegister, *Value, BitWidth);
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break;
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default:
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Status = AE_BAD_PARAMETER;
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break;
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}
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExCmosSpaceHandler
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*
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* PARAMETERS: Function - Read or Write operation
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* Address - Where in the space to read or write
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* BitWidth - Field width in bits (8, 16, or 32)
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* Value - Pointer to in or out value
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* HandlerContext - Pointer to Handler's context
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* RegionContext - Pointer to context specific to the
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* accessed region
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*
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* RETURN: Status
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*
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* DESCRIPTION: Handler for the CMOS address space (Op Region)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExCmosSpaceHandler (
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UINT32 Function,
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ACPI_PHYSICAL_ADDRESS Address,
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UINT32 BitWidth,
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ACPI_INTEGER *Value,
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void *HandlerContext,
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void *RegionContext)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE ("ExCmosSpaceHandler");
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExPciBarSpaceHandler
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*
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* PARAMETERS: Function - Read or Write operation
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* Address - Where in the space to read or write
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* BitWidth - Field width in bits (8, 16, or 32)
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* Value - Pointer to in or out value
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* HandlerContext - Pointer to Handler's context
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* RegionContext - Pointer to context specific to the
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* accessed region
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*
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* RETURN: Status
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*
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* DESCRIPTION: Handler for the PCI BarTarget address space (Op Region)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExPciBarSpaceHandler (
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UINT32 Function,
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ACPI_PHYSICAL_ADDRESS Address,
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UINT32 BitWidth,
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ACPI_INTEGER *Value,
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void *HandlerContext,
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void *RegionContext)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_FUNCTION_TRACE ("ExPciBarSpaceHandler");
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExDataTableSpaceHandler
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*
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* PARAMETERS: Function - Read or Write operation
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* Address - Where in the space to read or write
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* BitWidth - Field width in bits (8, 16, or 32)
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* Value - Pointer to in or out value
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* HandlerContext - Pointer to Handler's context
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* RegionContext - Pointer to context specific to the
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* accessed region
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*
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* RETURN: Status
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*
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* DESCRIPTION: Handler for the Data Table address space (Op Region)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExDataTableSpaceHandler (
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UINT32 Function,
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ACPI_PHYSICAL_ADDRESS Address,
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UINT32 BitWidth,
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ACPI_INTEGER *Value,
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void *HandlerContext,
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void *RegionContext)
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{
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ACPI_STATUS Status = AE_OK;
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UINT32 ByteWidth = ACPI_DIV_8 (BitWidth);
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UINT32 i;
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char *LogicalAddrPtr;
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ACPI_FUNCTION_TRACE ("ExDataTableSpaceHandler");
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LogicalAddrPtr = ACPI_PHYSADDR_TO_PTR (Address);
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/* Perform the memory read or write */
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switch (Function)
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{
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case ACPI_READ:
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for (i = 0; i < ByteWidth; i++)
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{
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((char *) Value) [i] = LogicalAddrPtr[i];
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}
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break;
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case ACPI_WRITE:
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default:
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return_ACPI_STATUS (AE_SUPPORT);
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}
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return_ACPI_STATUS (Status);
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}
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