1223 lines
37 KiB
C
1223 lines
37 KiB
C
/******************************************************************************
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*
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* Module Name: evregion - ACPI AddressSpace (OpRegion) handler dispatch
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* xRevision: 1.159 $
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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 - 2006, 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: evregion.c,v 1.1 2006/03/23 13:36:31 kochi Exp $");
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#define __EVREGION_C__
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#include "acpi.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#include "acinterp.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evregion")
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#define ACPI_NUM_DEFAULT_SPACES 4
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static UINT8 AcpiGbl_DefaultAddressSpaces[ACPI_NUM_DEFAULT_SPACES] = {
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ACPI_ADR_SPACE_SYSTEM_MEMORY,
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ACPI_ADR_SPACE_SYSTEM_IO,
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ACPI_ADR_SPACE_PCI_CONFIG,
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ACPI_ADR_SPACE_DATA_TABLE};
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/* Local prototypes */
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static ACPI_STATUS
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AcpiEvRegRun (
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ACPI_HANDLE ObjHandle,
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UINT32 Level,
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void *Context,
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void **ReturnValue);
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static ACPI_STATUS
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AcpiEvInstallHandler (
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ACPI_HANDLE ObjHandle,
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UINT32 Level,
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void *Context,
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void **ReturnValue);
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvInstallRegionHandlers
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Installs the core subsystem default address space handlers.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvInstallRegionHandlers (
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void)
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{
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ACPI_STATUS Status;
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ACPI_NATIVE_UINT i;
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ACPI_FUNCTION_TRACE ("EvInstallRegionHandlers");
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Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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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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/*
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* All address spaces (PCI Config, EC, SMBus) are scope dependent
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* and registration must occur for a specific device.
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*
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* In the case of the system memory and IO address spaces there is currently
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* no device associated with the address space. For these we use the root.
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*
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* We install the default PCI config space handler at the root so
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* that this space is immediately available even though the we have
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* not enumerated all the PCI Root Buses yet. This is to conform
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* to the ACPI specification which states that the PCI config
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* space must be always available -- even though we are nowhere
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* near ready to find the PCI root buses at this point.
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*
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* NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler
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* has already been installed (via AcpiInstallAddressSpaceHandler).
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* Similar for AE_SAME_HANDLER.
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*/
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for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++)
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{
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Status = AcpiEvInstallSpaceHandler (AcpiGbl_RootNode,
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AcpiGbl_DefaultAddressSpaces[i],
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ACPI_DEFAULT_HANDLER, NULL, NULL);
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switch (Status)
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{
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case AE_OK:
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case AE_SAME_HANDLER:
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case AE_ALREADY_EXISTS:
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/* These exceptions are all OK */
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Status = AE_OK;
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break;
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default:
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goto UnlockAndExit;
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}
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}
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UnlockAndExit:
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(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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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: AcpiEvInitializeOpRegions
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute _REG methods for all Operation Regions that have
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* an installed default region handler.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvInitializeOpRegions (
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void)
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{
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ACPI_STATUS Status;
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ACPI_NATIVE_UINT i;
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ACPI_FUNCTION_TRACE ("EvInitializeOpRegions");
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Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
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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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/*
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* Run the _REG methods for OpRegions in each default address space
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*/
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for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++)
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{
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/* TBD: Make sure handler is the DEFAULT handler, otherwise
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* _REG will have already been run.
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*/
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Status = AcpiEvExecuteRegMethods (AcpiGbl_RootNode,
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AcpiGbl_DefaultAddressSpaces[i]);
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}
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(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
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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: AcpiEvExecuteRegMethod
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*
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* PARAMETERS: RegionObj - Region object
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* Function - Passed to _REG: On (1) or Off (0)
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute _REG method for a region
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvExecuteRegMethod (
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ACPI_OPERAND_OBJECT *RegionObj,
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UINT32 Function)
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{
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ACPI_PARAMETER_INFO Info;
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ACPI_OPERAND_OBJECT *Params[3];
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ACPI_OPERAND_OBJECT *RegionObj2;
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("EvExecuteRegMethod");
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RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
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if (!RegionObj2)
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{
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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if (RegionObj2->Extra.Method_REG == NULL)
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{
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return_ACPI_STATUS (AE_OK);
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}
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/*
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* The _REG method has two arguments:
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*
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* Arg0, Integer: Operation region space ID
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* Same value as RegionObj->Region.SpaceId
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* Arg1, Integer: connection status
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* 1 for connecting the handler,
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* 0 for disconnecting the handler
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* Passed as a parameter
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*/
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Params[0] = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
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if (!Params[0])
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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Params[1] = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
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if (!Params[1])
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{
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Status = AE_NO_MEMORY;
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goto Cleanup;
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}
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/* Setup the parameter objects */
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Params[0]->Integer.Value = RegionObj->Region.SpaceId;
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Params[1]->Integer.Value = Function;
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Params[2] = NULL;
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Info.Node = RegionObj2->Extra.Method_REG;
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Info.Parameters = Params;
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Info.ParameterType = ACPI_PARAM_ARGS;
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/* Execute the method, no return value */
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ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
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ACPI_TYPE_METHOD, Info.Node, NULL));
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Status = AcpiNsEvaluateByHandle (&Info);
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AcpiUtRemoveReference (Params[1]);
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Cleanup:
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AcpiUtRemoveReference (Params[0]);
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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: AcpiEvAddressSpaceDispatch
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*
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* PARAMETERS: RegionObj - Internal region object
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* 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, 32, or 64)
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* Value - Pointer to in or out value
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*
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* RETURN: Status
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*
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* DESCRIPTION: Dispatch an address space or operation region access to
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* a previously installed handler.
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*
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******************************************************************************/
|
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ACPI_STATUS
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AcpiEvAddressSpaceDispatch (
|
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ACPI_OPERAND_OBJECT *RegionObj,
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UINT32 Function,
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ACPI_PHYSICAL_ADDRESS Address,
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UINT32 BitWidth,
|
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void *Value)
|
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{
|
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ACPI_STATUS Status;
|
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ACPI_STATUS Status2;
|
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ACPI_ADR_SPACE_HANDLER Handler;
|
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ACPI_ADR_SPACE_SETUP RegionSetup;
|
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ACPI_OPERAND_OBJECT *HandlerDesc;
|
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ACPI_OPERAND_OBJECT *RegionObj2;
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void *RegionContext = NULL;
|
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|
|
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ACPI_FUNCTION_TRACE ("EvAddressSpaceDispatch");
|
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|
|
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RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
|
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if (!RegionObj2)
|
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{
|
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return_ACPI_STATUS (AE_NOT_EXIST);
|
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}
|
|
|
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/* Ensure that there is a handler associated with this region */
|
|
|
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HandlerDesc = RegionObj->Region.Handler;
|
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if (!HandlerDesc)
|
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{
|
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ACPI_ERROR ((AE_INFO,
|
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"No handler for Region [%4.4s] (%p) [%s]",
|
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AcpiUtGetNodeName (RegionObj->Region.Node),
|
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RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
|
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|
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return_ACPI_STATUS (AE_NOT_EXIST);
|
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}
|
|
|
|
/*
|
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* It may be the case that the region has never been initialized
|
|
* Some types of regions require special init code
|
|
*/
|
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if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE))
|
|
{
|
|
/*
|
|
* This region has not been initialized yet, do it
|
|
*/
|
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RegionSetup = HandlerDesc->AddressSpace.Setup;
|
|
if (!RegionSetup)
|
|
{
|
|
/* No initialization routine, exit with error */
|
|
|
|
ACPI_ERROR ((AE_INFO,
|
|
"No init routine for region(%p) [%s]",
|
|
RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
/*
|
|
* We must exit the interpreter because the region
|
|
* setup will potentially execute control methods
|
|
* (e.g., _REG method for this region)
|
|
*/
|
|
AcpiExExitInterpreter ();
|
|
|
|
Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE,
|
|
HandlerDesc->AddressSpace.Context, &RegionContext);
|
|
|
|
/* Re-enter the interpreter */
|
|
|
|
Status2 = AcpiExEnterInterpreter ();
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
|
|
/* Check for failure of the Region Setup */
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"During region initialization: [%s]",
|
|
AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Region initialization may have been completed by RegionSetup
|
|
*/
|
|
if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE))
|
|
{
|
|
RegionObj->Region.Flags |= AOPOBJ_SETUP_COMPLETE;
|
|
|
|
if (RegionObj2->Extra.RegionContext)
|
|
{
|
|
/* The handler for this region was already installed */
|
|
|
|
ACPI_MEM_FREE (RegionContext);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Save the returned context for use in all accesses to
|
|
* this particular region
|
|
*/
|
|
RegionObj2->Extra.RegionContext = RegionContext;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We have everything we need, we can invoke the address space handler */
|
|
|
|
Handler = HandlerDesc->AddressSpace.Handler;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
|
|
&RegionObj->Region.Handler->AddressSpace, Handler,
|
|
ACPI_FORMAT_UINT64 (Address),
|
|
AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
|
|
|
|
if (!(HandlerDesc->AddressSpace.Hflags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
|
|
{
|
|
/*
|
|
* For handlers other than the default (supplied) handlers, we must
|
|
* exit the interpreter because the handler *might* block -- we don't
|
|
* know what it will do, so we can't hold the lock on the intepreter.
|
|
*/
|
|
AcpiExExitInterpreter();
|
|
}
|
|
|
|
/* Call the handler */
|
|
|
|
Status = Handler (Function, Address, BitWidth, Value,
|
|
HandlerDesc->AddressSpace.Context,
|
|
RegionObj2->Extra.RegionContext);
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "Returned by Handler for [%s]",
|
|
AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
|
|
}
|
|
|
|
if (!(HandlerDesc->AddressSpace.Hflags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
|
|
{
|
|
/*
|
|
* We just returned from a non-default handler, we must re-enter the
|
|
* interpreter
|
|
*/
|
|
Status2 = AcpiExEnterInterpreter ();
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvDetachRegion
|
|
*
|
|
* PARAMETERS: RegionObj - Region Object
|
|
* AcpiNsIsLocked - Namespace Region Already Locked?
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Break the association between the handler and the region
|
|
* this is a two way association.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiEvDetachRegion(
|
|
ACPI_OPERAND_OBJECT *RegionObj,
|
|
BOOLEAN AcpiNsIsLocked)
|
|
{
|
|
ACPI_OPERAND_OBJECT *HandlerObj;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_OPERAND_OBJECT **LastObjPtr;
|
|
ACPI_ADR_SPACE_SETUP RegionSetup;
|
|
void **RegionContext;
|
|
ACPI_OPERAND_OBJECT *RegionObj2;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvDetachRegion");
|
|
|
|
|
|
RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
|
|
if (!RegionObj2)
|
|
{
|
|
return_VOID;
|
|
}
|
|
RegionContext = &RegionObj2->Extra.RegionContext;
|
|
|
|
/* Get the address handler from the region object */
|
|
|
|
HandlerObj = RegionObj->Region.Handler;
|
|
if (!HandlerObj)
|
|
{
|
|
/* This region has no handler, all done */
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
/* Find this region in the handler's list */
|
|
|
|
ObjDesc = HandlerObj->AddressSpace.RegionList;
|
|
LastObjPtr = &HandlerObj->AddressSpace.RegionList;
|
|
|
|
while (ObjDesc)
|
|
{
|
|
/* Is this the correct Region? */
|
|
|
|
if (ObjDesc == RegionObj)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Removing Region %p from address handler %p\n",
|
|
RegionObj, HandlerObj));
|
|
|
|
/* This is it, remove it from the handler's list */
|
|
|
|
*LastObjPtr = ObjDesc->Region.Next;
|
|
ObjDesc->Region.Next = NULL; /* Must clear field */
|
|
|
|
if (AcpiNsIsLocked)
|
|
{
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VOID;
|
|
}
|
|
}
|
|
|
|
/* Now stop region accesses by executing the _REG method */
|
|
|
|
Status = AcpiEvExecuteRegMethod (RegionObj, 0);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "from region _REG, [%s]",
|
|
AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
|
|
}
|
|
|
|
if (AcpiNsIsLocked)
|
|
{
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VOID;
|
|
}
|
|
}
|
|
|
|
/* Call the setup handler with the deactivate notification */
|
|
|
|
RegionSetup = HandlerObj->AddressSpace.Setup;
|
|
Status = RegionSetup (RegionObj, ACPI_REGION_DEACTIVATE,
|
|
HandlerObj->AddressSpace.Context, RegionContext);
|
|
|
|
/* Init routine may fail, Just ignore errors */
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "from region init, [%s]",
|
|
AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
|
|
}
|
|
|
|
RegionObj->Region.Flags &= ~(AOPOBJ_SETUP_COMPLETE);
|
|
|
|
/*
|
|
* Remove handler reference in the region
|
|
*
|
|
* NOTE: this doesn't mean that the region goes away
|
|
* The region is just inaccessible as indicated to
|
|
* the _REG method
|
|
*
|
|
* If the region is on the handler's list
|
|
* this better be the region's handler
|
|
*/
|
|
RegionObj->Region.Handler = NULL;
|
|
AcpiUtRemoveReference (HandlerObj);
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
/* Walk the linked list of handlers */
|
|
|
|
LastObjPtr = &ObjDesc->Region.Next;
|
|
ObjDesc = ObjDesc->Region.Next;
|
|
}
|
|
|
|
/* If we get here, the region was not in the handler's region list */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Cannot remove region %p from address handler %p\n",
|
|
RegionObj, HandlerObj));
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvAttachRegion
|
|
*
|
|
* PARAMETERS: HandlerObj - Handler Object
|
|
* RegionObj - Region Object
|
|
* AcpiNsIsLocked - Namespace Region Already Locked?
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Create the association between the handler and the region
|
|
* this is a two way association.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvAttachRegion (
|
|
ACPI_OPERAND_OBJECT *HandlerObj,
|
|
ACPI_OPERAND_OBJECT *RegionObj,
|
|
BOOLEAN AcpiNsIsLocked)
|
|
{
|
|
|
|
ACPI_FUNCTION_TRACE ("EvAttachRegion");
|
|
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Adding Region [%4.4s] %p to address handler %p [%s]\n",
|
|
AcpiUtGetNodeName (RegionObj->Region.Node),
|
|
RegionObj, HandlerObj,
|
|
AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
|
|
|
|
/* Link this region to the front of the handler's list */
|
|
|
|
RegionObj->Region.Next = HandlerObj->AddressSpace.RegionList;
|
|
HandlerObj->AddressSpace.RegionList = RegionObj;
|
|
|
|
/* Install the region's handler */
|
|
|
|
if (RegionObj->Region.Handler)
|
|
{
|
|
return_ACPI_STATUS (AE_ALREADY_EXISTS);
|
|
}
|
|
|
|
RegionObj->Region.Handler = HandlerObj;
|
|
AcpiUtAddReference (HandlerObj);
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInstallHandler
|
|
*
|
|
* PARAMETERS: WalkNamespace callback
|
|
*
|
|
* DESCRIPTION: This routine installs an address handler into objects that are
|
|
* of type Region or Device.
|
|
*
|
|
* If the Object is a Device, and the device has a handler of
|
|
* the same type then the search is terminated in that branch.
|
|
*
|
|
* This is because the existing handler is closer in proximity
|
|
* to any more regions than the one we are trying to install.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiEvInstallHandler (
|
|
ACPI_HANDLE ObjHandle,
|
|
UINT32 Level,
|
|
void *Context,
|
|
void **ReturnValue)
|
|
{
|
|
ACPI_OPERAND_OBJECT *HandlerObj;
|
|
ACPI_OPERAND_OBJECT *NextHandlerObj;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_NAME ("EvInstallHandler");
|
|
|
|
|
|
HandlerObj = (ACPI_OPERAND_OBJECT *) Context;
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!HandlerObj)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Convert and validate the device handle */
|
|
|
|
Node = AcpiNsMapHandleToNode (ObjHandle);
|
|
if (!Node)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* We only care about regions.and objects
|
|
* that are allowed to have address space handlers
|
|
*/
|
|
if ((Node->Type != ACPI_TYPE_DEVICE) &&
|
|
(Node->Type != ACPI_TYPE_REGION) &&
|
|
(Node != AcpiGbl_RootNode))
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Check for an existing internal object */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
/* No object, just exit */
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Devices are handled different than regions */
|
|
|
|
if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_DEVICE)
|
|
{
|
|
/* Check if this Device already has a handler for this address space */
|
|
|
|
NextHandlerObj = ObjDesc->Device.Handler;
|
|
while (NextHandlerObj)
|
|
{
|
|
/* Found a handler, is it for the same address space? */
|
|
|
|
if (NextHandlerObj->AddressSpace.SpaceId == HandlerObj->AddressSpace.SpaceId)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Found handler for region [%s] in device %p(%p) handler %p\n",
|
|
AcpiUtGetRegionName (HandlerObj->AddressSpace.SpaceId),
|
|
ObjDesc, NextHandlerObj, HandlerObj));
|
|
|
|
/*
|
|
* Since the object we found it on was a device, then it
|
|
* means that someone has already installed a handler for
|
|
* the branch of the namespace from this device on. Just
|
|
* bail out telling the walk routine to not traverse this
|
|
* branch. This preserves the scoping rule for handlers.
|
|
*/
|
|
return (AE_CTRL_DEPTH);
|
|
}
|
|
|
|
/* Walk the linked list of handlers attached to this device */
|
|
|
|
NextHandlerObj = NextHandlerObj->AddressSpace.Next;
|
|
}
|
|
|
|
/*
|
|
* As long as the device didn't have a handler for this
|
|
* space we don't care about it. We just ignore it and
|
|
* proceed.
|
|
*/
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Object is a Region */
|
|
|
|
if (ObjDesc->Region.SpaceId != HandlerObj->AddressSpace.SpaceId)
|
|
{
|
|
/*
|
|
* This region is for a different address space
|
|
* -- just ignore it
|
|
*/
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Now we have a region and it is for the handler's address
|
|
* space type.
|
|
*
|
|
* First disconnect region for any previous handler (if any)
|
|
*/
|
|
AcpiEvDetachRegion (ObjDesc, FALSE);
|
|
|
|
/* Connect the region to the new handler */
|
|
|
|
Status = AcpiEvAttachRegion (HandlerObj, ObjDesc, FALSE);
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInstallSpaceHandler
|
|
*
|
|
* PARAMETERS: Node - Namespace node for the device
|
|
* SpaceId - The address space ID
|
|
* Handler - Address of the handler
|
|
* Setup - Address of the setup function
|
|
* Context - Value passed to the handler on each access
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install a handler for all OpRegions of a given SpaceId.
|
|
* Assumes namespace is locked
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvInstallSpaceHandler (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_ADR_SPACE_TYPE SpaceId,
|
|
ACPI_ADR_SPACE_HANDLER Handler,
|
|
ACPI_ADR_SPACE_SETUP Setup,
|
|
void *Context)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_OPERAND_OBJECT *HandlerObj;
|
|
ACPI_STATUS Status;
|
|
ACPI_OBJECT_TYPE Type;
|
|
UINT16 Flags = 0;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvInstallSpaceHandler");
|
|
|
|
|
|
/*
|
|
* This registration is valid for only the types below
|
|
* and the root. This is where the default handlers
|
|
* get placed.
|
|
*/
|
|
if ((Node->Type != ACPI_TYPE_DEVICE) &&
|
|
(Node->Type != ACPI_TYPE_PROCESSOR) &&
|
|
(Node->Type != ACPI_TYPE_THERMAL) &&
|
|
(Node != AcpiGbl_RootNode))
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
if (Handler == ACPI_DEFAULT_HANDLER)
|
|
{
|
|
Flags = ACPI_ADDR_HANDLER_DEFAULT_INSTALLED;
|
|
|
|
switch (SpaceId)
|
|
{
|
|
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
|
Handler = AcpiExSystemMemorySpaceHandler;
|
|
Setup = AcpiEvSystemMemoryRegionSetup;
|
|
break;
|
|
|
|
case ACPI_ADR_SPACE_SYSTEM_IO:
|
|
Handler = AcpiExSystemIoSpaceHandler;
|
|
Setup = AcpiEvIoSpaceRegionSetup;
|
|
break;
|
|
|
|
case ACPI_ADR_SPACE_PCI_CONFIG:
|
|
Handler = AcpiExPciConfigSpaceHandler;
|
|
Setup = AcpiEvPciConfigRegionSetup;
|
|
break;
|
|
|
|
case ACPI_ADR_SPACE_CMOS:
|
|
Handler = AcpiExCmosSpaceHandler;
|
|
Setup = AcpiEvCmosRegionSetup;
|
|
break;
|
|
|
|
case ACPI_ADR_SPACE_PCI_BAR_TARGET:
|
|
Handler = AcpiExPciBarSpaceHandler;
|
|
Setup = AcpiEvPciBarRegionSetup;
|
|
break;
|
|
|
|
case ACPI_ADR_SPACE_DATA_TABLE:
|
|
Handler = AcpiExDataTableSpaceHandler;
|
|
Setup = NULL;
|
|
break;
|
|
|
|
default:
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
}
|
|
|
|
/* If the caller hasn't specified a setup routine, use the default */
|
|
|
|
if (!Setup)
|
|
{
|
|
Setup = AcpiEvDefaultRegionSetup;
|
|
}
|
|
|
|
/* Check for an existing internal object */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (ObjDesc)
|
|
{
|
|
/*
|
|
* The attached device object already exists.
|
|
* Make sure the handler is not already installed.
|
|
*/
|
|
HandlerObj = ObjDesc->Device.Handler;
|
|
|
|
/* Walk the handler list for this device */
|
|
|
|
while (HandlerObj)
|
|
{
|
|
/* Same SpaceId indicates a handler already installed */
|
|
|
|
if (HandlerObj->AddressSpace.SpaceId == SpaceId)
|
|
{
|
|
if (HandlerObj->AddressSpace.Handler == Handler)
|
|
{
|
|
/*
|
|
* It is (relatively) OK to attempt to install the SAME
|
|
* handler twice. This can easily happen
|
|
* with PCI_Config space.
|
|
*/
|
|
Status = AE_SAME_HANDLER;
|
|
goto UnlockAndExit;
|
|
}
|
|
else
|
|
{
|
|
/* A handler is already installed */
|
|
|
|
Status = AE_ALREADY_EXISTS;
|
|
}
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Walk the linked list of handlers */
|
|
|
|
HandlerObj = HandlerObj->AddressSpace.Next;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Creating object on Device %p while installing handler\n", Node));
|
|
|
|
/* ObjDesc does not exist, create one */
|
|
|
|
if (Node->Type == ACPI_TYPE_ANY)
|
|
{
|
|
Type = ACPI_TYPE_DEVICE;
|
|
}
|
|
else
|
|
{
|
|
Type = Node->Type;
|
|
}
|
|
|
|
ObjDesc = AcpiUtCreateInternalObject (Type);
|
|
if (!ObjDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Init new descriptor */
|
|
|
|
ObjDesc->Common.Type = (UINT8) Type;
|
|
|
|
/* Attach the new object to the Node */
|
|
|
|
Status = AcpiNsAttachObject (Node, ObjDesc, Type);
|
|
|
|
/* Remove local reference to the object */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Installing address handler for region %s(%X) on Device %4.4s %p(%p)\n",
|
|
AcpiUtGetRegionName (SpaceId), SpaceId,
|
|
AcpiUtGetNodeName (Node), Node, ObjDesc));
|
|
|
|
/*
|
|
* Install the handler
|
|
*
|
|
* At this point there is no existing handler.
|
|
* Just allocate the object for the handler and link it
|
|
* into the list.
|
|
*/
|
|
HandlerObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_ADDRESS_HANDLER);
|
|
if (!HandlerObj)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Init handler obj */
|
|
|
|
HandlerObj->AddressSpace.SpaceId = (UINT8) SpaceId;
|
|
HandlerObj->AddressSpace.Hflags = Flags;
|
|
HandlerObj->AddressSpace.RegionList = NULL;
|
|
HandlerObj->AddressSpace.Node = Node;
|
|
HandlerObj->AddressSpace.Handler = Handler;
|
|
HandlerObj->AddressSpace.Context = Context;
|
|
HandlerObj->AddressSpace.Setup = Setup;
|
|
|
|
/* Install at head of Device.AddressSpace list */
|
|
|
|
HandlerObj->AddressSpace.Next = ObjDesc->Device.Handler;
|
|
|
|
/*
|
|
* The Device object is the first reference on the HandlerObj.
|
|
* Each region that uses the handler adds a reference.
|
|
*/
|
|
ObjDesc->Device.Handler = HandlerObj;
|
|
|
|
/*
|
|
* Walk the namespace finding all of the regions this
|
|
* handler will manage.
|
|
*
|
|
* Start at the device and search the branch toward
|
|
* the leaf nodes until either the leaf is encountered or
|
|
* a device is detected that has an address handler of the
|
|
* same type.
|
|
*
|
|
* In either case, back up and search down the remainder
|
|
* of the branch
|
|
*/
|
|
Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, Node, ACPI_UINT32_MAX,
|
|
ACPI_NS_WALK_UNLOCK, AcpiEvInstallHandler,
|
|
HandlerObj, NULL);
|
|
|
|
UnlockAndExit:
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvExecuteRegMethods
|
|
*
|
|
* PARAMETERS: Node - Namespace node for the device
|
|
* SpaceId - The address space ID
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Run all _REG methods for the input Space ID;
|
|
* Note: assumes namespace is locked, or system init time.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvExecuteRegMethods (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_ADR_SPACE_TYPE SpaceId)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvExecuteRegMethods");
|
|
|
|
|
|
/*
|
|
* Run all _REG methods for all Operation Regions for this
|
|
* space ID. This is a separate walk in order to handle any
|
|
* interdependencies between regions and _REG methods. (i.e. handlers
|
|
* must be installed for all regions of this Space ID before we
|
|
* can run any _REG methods)
|
|
*/
|
|
Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, Node, ACPI_UINT32_MAX,
|
|
ACPI_NS_WALK_UNLOCK, AcpiEvRegRun,
|
|
&SpaceId, NULL);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvRegRun
|
|
*
|
|
* PARAMETERS: WalkNamespace callback
|
|
*
|
|
* DESCRIPTION: Run _REG method for region objects of the requested spaceID
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiEvRegRun (
|
|
ACPI_HANDLE ObjHandle,
|
|
UINT32 Level,
|
|
void *Context,
|
|
void **ReturnValue)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_ADR_SPACE_TYPE SpaceId;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
SpaceId = *ACPI_CAST_PTR (ACPI_ADR_SPACE_TYPE, Context);
|
|
|
|
/* Convert and validate the device handle */
|
|
|
|
Node = AcpiNsMapHandleToNode (ObjHandle);
|
|
if (!Node)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* We only care about regions.and objects
|
|
* that are allowed to have address space handlers
|
|
*/
|
|
if ((Node->Type != ACPI_TYPE_REGION) &&
|
|
(Node != AcpiGbl_RootNode))
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Check for an existing internal object */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
/* No object, just exit */
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Object is a Region */
|
|
|
|
if (ObjDesc->Region.SpaceId != SpaceId)
|
|
{
|
|
/*
|
|
* This region is for a different address space
|
|
* -- just ignore it
|
|
*/
|
|
return (AE_OK);
|
|
}
|
|
|
|
Status = AcpiEvExecuteRegMethod (ObjDesc, 1);
|
|
return (Status);
|
|
}
|
|
|