926328c406
is Intel's reference implementation of the core operating-system ACPI support. (This import is on the vendor branch.)
562 lines
18 KiB
C
562 lines
18 KiB
C
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/******************************************************************************
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*
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* Module Name: amregion - ACPI default OpRegion (address space) handlers
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* $Revision: 36 $
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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, Intel Corp. All rights
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* 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 __AMREGION_C__
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#include "acpi.h"
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#include "acinterp.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#include "achware.h"
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#include "acevents.h"
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#define _COMPONENT INTERPRETER
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MODULE_NAME ("amregion")
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/*******************************************************************************
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*
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* FUNCTION: AcpiAmlSystemMemorySpaceHandler
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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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AcpiAmlSystemMemorySpaceHandler (
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UINT32 Function,
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ACPI_INTEGER Address,
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UINT32 BitWidth,
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UINT32 *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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MEM_HANDLER_CONTEXT *MemInfo = RegionContext;
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UINT32 Length;
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FUNCTION_TRACE ("AmlSystemMemorySpaceHandler");
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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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default:
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DEBUG_PRINT (ACPI_ERROR,
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("AmlSystemMemorySpaceHandler: 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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break;
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}
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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 < (ACPI_INTEGER) MemInfo->MappedPhysicalAddress) ||
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((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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MemInfo->MappedLength = 0; /* In case of failure below */
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/* Create a new mapping starting at the address given */
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Status = AcpiOsMapMemory ((void *) (UINT32) Address, SYSMEM_REGION_WINDOW_SIZE,
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(void **) &MemInfo->MappedLogicalAddress);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* TBD: should these pointers go to 64-bit in all cases ? */
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MemInfo->MappedPhysicalAddress = (UINT8 *) (UINT32) Address;
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MemInfo->MappedLength = SYSMEM_REGION_WINDOW_SIZE;
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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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/* TBD: should these pointers go to 64-bit in all cases ? */
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LogicalAddrPtr = MemInfo->MappedLogicalAddress +
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((UINT8 *) (UINT32) Address - MemInfo->MappedPhysicalAddress);
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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 ADDRESS_SPACE_READ:
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DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
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("Read (%d width) Address:0x%X\n", BitWidth, Address));
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switch (BitWidth)
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{
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case 8:
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*Value = (UINT32)* (UINT8 *) LogicalAddrPtr;
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break;
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case 16:
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MOVE_UNALIGNED16_TO_32 (Value, LogicalAddrPtr);
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break;
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case 32:
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MOVE_UNALIGNED32_TO_32 (Value, LogicalAddrPtr);
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break;
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}
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break;
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case ADDRESS_SPACE_WRITE:
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DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
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("Write (%d width) Address:0x%p Value 0x%X\n",
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BitWidth, Address, *Value));
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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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MOVE_UNALIGNED16_TO_16 (LogicalAddrPtr, Value);
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break;
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case 32:
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MOVE_UNALIGNED32_TO_32 (LogicalAddrPtr, Value);
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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: AcpiAmlSystemIoSpaceHandler
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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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AcpiAmlSystemIoSpaceHandler (
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UINT32 Function,
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ACPI_INTEGER Address,
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UINT32 BitWidth,
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UINT32 *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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FUNCTION_TRACE ("AmlSystemIoSpaceHandler");
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/* Decode the function parameter */
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switch (Function)
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{
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case ADDRESS_SPACE_READ:
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DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
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("Read(%d width) Address:0x%08x\n", BitWidth, Address));
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switch (BitWidth)
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{
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/* I/O Port width */
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case 8:
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*Value = (UINT32) AcpiOsIn8 ((ACPI_IO_ADDRESS) Address);
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break;
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case 16:
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*Value = (UINT32) AcpiOsIn16 ((ACPI_IO_ADDRESS) Address);
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break;
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case 32:
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*Value = AcpiOsIn32 ((ACPI_IO_ADDRESS) Address);
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break;
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default:
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DEBUG_PRINT (ACPI_ERROR,
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("AmlSystemIoSpaceHandler: Invalid SystemIO width %d\n",
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BitWidth));
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Status = AE_AML_OPERAND_VALUE;
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}
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break;
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case ADDRESS_SPACE_WRITE:
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DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
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("Write(%d width) Address:0x%08x Value 0x%08x\n",
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BitWidth, Address, *Value));
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switch (BitWidth)
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{
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/* I/O Port width */
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case 8:
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AcpiOsOut8 ((ACPI_IO_ADDRESS) Address, (UINT8) *Value);
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break;
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case 16:
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AcpiOsOut16 ((ACPI_IO_ADDRESS) Address, (UINT16) *Value);
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break;
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case 32:
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AcpiOsOut32 ((ACPI_IO_ADDRESS) Address, *Value);
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break;
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default:
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DEBUG_PRINT (ACPI_ERROR, (
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"AmlSystemIoSpaceHandler: Invalid SystemIO width %d\n",
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BitWidth));
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Status = AE_AML_OPERAND_VALUE;
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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: AcpiAmlPciConfigSpaceHandler
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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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AcpiAmlPciConfigSpaceHandler (
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UINT32 Function,
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ACPI_INTEGER Address,
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UINT32 BitWidth,
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UINT32 *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 PciBus;
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UINT32 DevFunc;
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UINT8 PciReg;
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PCI_HANDLER_CONTEXT *PCIContext;
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FUNCTION_TRACE ("AmlPciConfigSpaceHandler");
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/*
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* The arguments to AcpiOs(Read|Write)PciCfg(Byte|Word|Dword) are:
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*
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* SegBus - 0xSSSSBBBB - SSSS is the PCI bus segment
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* BBBB is the PCI bus number
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*
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* DevFunc - 0xDDDDFFFF - DDDD is the PCI device number
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* FFFF is the PCI device function number
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*
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* RegNum - Config space register must be < 40h
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*
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* Value - input value for write, output for read
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*
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*/
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PCIContext = (PCI_HANDLER_CONTEXT *) RegionContext;
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PciBus = LOWORD(PCIContext->Seg) << 16;
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PciBus |= LOWORD(PCIContext->Bus);
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DevFunc = PCIContext->DevFunc;
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PciReg = (UINT8) Address;
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switch (Function)
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{
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case ADDRESS_SPACE_READ:
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DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
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("R%d S(%04x) B(%04x) DF(%08x) R(%04x)\n", BitWidth,
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PCIContext->Seg,PCIContext->Bus,PCIContext->DevFunc, PciReg));
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*Value = 0;
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switch (BitWidth)
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{
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/* PCI Register width */
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case 8:
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Status = AcpiOsReadPciCfgByte (PciBus, DevFunc, PciReg,
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(UINT8 *) Value);
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break;
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case 16:
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Status = AcpiOsReadPciCfgWord (PciBus, DevFunc, PciReg,
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(UINT16 *) Value);
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break;
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case 32:
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Status = AcpiOsReadPciCfgDword (PciBus, DevFunc, PciReg,
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Value);
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break;
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default:
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DEBUG_PRINT (ACPI_ERROR,
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("AmlPciConfigSpaceHandler: Invalid PCIConfig width %d\n",
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BitWidth));
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Status = AE_AML_OPERAND_VALUE;
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} /* Switch bitWidth */
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break;
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case ADDRESS_SPACE_WRITE:
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DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
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("W%d S(%04x) B(%04x) DF(%08x) R(%04x) D(%08x)\n", BitWidth,
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PCIContext->Seg,PCIContext->Bus,PCIContext->DevFunc,
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PciReg,*Value));
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switch (BitWidth)
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{
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/* PCI Register width */
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case 8:
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Status = AcpiOsWritePciCfgByte (PciBus, DevFunc, PciReg,
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*(UINT8 *) Value);
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break;
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case 16:
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Status = AcpiOsWritePciCfgWord (PciBus, DevFunc, PciReg,
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*(UINT16 *) Value);
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break;
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case 32:
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Status = AcpiOsWritePciCfgDword (PciBus, DevFunc, PciReg,
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*Value);
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break;
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default:
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DEBUG_PRINT (ACPI_ERROR, (
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"AmlPciConfigSpaceHandler: Invalid PCIConfig width %d\n",
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BitWidth));
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Status = AE_AML_OPERAND_VALUE;
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} /* Switch 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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