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Diffstat (limited to 'sys/contrib/dev/acpica/evregion.c')
| -rw-r--r-- | sys/contrib/dev/acpica/evregion.c | 1232 |
1 files changed, 0 insertions, 1232 deletions
diff --git a/sys/contrib/dev/acpica/evregion.c b/sys/contrib/dev/acpica/evregion.c deleted file mode 100644 index f7071b1..0000000 --- a/sys/contrib/dev/acpica/evregion.c +++ /dev/null @@ -1,1232 +0,0 @@ -/****************************************************************************** - * - * Module Name: evregion - ACPI AddressSpace (OpRegion) handler dispatch - * $Revision: 1.168 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp. - * All rights reserved. - * - * 2. License - * - * 2.1. This is your license from Intel Corp. under its intellectual property - * rights. You may have additional license terms from the party that provided - * you this software, covering your right to use that party's intellectual - * property rights. - * - * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a - * copy of the source code appearing in this file ("Covered Code") an - * irrevocable, perpetual, worldwide license under Intel's copyrights in the - * base code distributed originally by Intel ("Original Intel Code") to copy, - * make derivatives, distribute, use and display any portion of the Covered - * Code in any form, with the right to sublicense such rights; and - * - * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent - * license (with the right to sublicense), under only those claims of Intel - * patents that are infringed by the Original Intel Code, to make, use, sell, - * offer to sell, and import the Covered Code and derivative works thereof - * solely to the minimum extent necessary to exercise the above copyright - * license, and in no event shall the patent license extend to any additions - * to or modifications of the Original Intel Code. No other license or right - * is granted directly or by implication, estoppel or otherwise; - * - * The above copyright and patent license is granted only if the following - * conditions are met: - * - * 3. Conditions - * - * 3.1. Redistribution of Source with Rights to Further Distribute Source. - * Redistribution of source code of any substantial portion of the Covered - * Code or modification with rights to further distribute source must include - * the above Copyright Notice, the above License, this list of Conditions, - * and the following Disclaimer and Export Compliance provision. In addition, - * Licensee must cause all Covered Code to which Licensee contributes to - * contain a file documenting the changes Licensee made to create that Covered - * Code and the date of any change. Licensee must include in that file the - * documentation of any changes made by any predecessor Licensee. Licensee - * must include a prominent statement that the modification is derived, - * directly or indirectly, from Original Intel Code. - * - * 3.2. Redistribution of Source with no Rights to Further Distribute Source. - * Redistribution of source code of any substantial portion of the Covered - * Code or modification without rights to further distribute source must - * include the following Disclaimer and Export Compliance provision in the - * documentation and/or other materials provided with distribution. In - * addition, Licensee may not authorize further sublicense of source of any - * portion of the Covered Code, and must include terms to the effect that the - * license from Licensee to its licensee is limited to the intellectual - * property embodied in the software Licensee provides to its licensee, and - * not to intellectual property embodied in modifications its licensee may - * make. - * - * 3.3. Redistribution of Executable. Redistribution in executable form of any - * substantial portion of the Covered Code or modification must reproduce the - * above Copyright Notice, and the following Disclaimer and Export Compliance - * provision in the documentation and/or other materials provided with the - * distribution. - * - * 3.4. Intel retains all right, title, and interest in and to the Original - * Intel Code. - * - * 3.5. Neither the name Intel nor any other trademark owned or controlled by - * Intel shall be used in advertising or otherwise to promote the sale, use or - * other dealings in products derived from or relating to the Covered Code - * without prior written authorization from Intel. - * - * 4. Disclaimer and Export Compliance - * - * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED - * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE - * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, - * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY - * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY - * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A - * PARTICULAR PURPOSE. - * - * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES - * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR - * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, - * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY - * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL - * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS - * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY - * LIMITED REMEDY. - * - * 4.3. Licensee shall not export, either directly or indirectly, any of this - * software or system incorporating such software without first obtaining any - * required license or other approval from the U. S. Department of Commerce or - * any other agency or department of the United States Government. In the - * event Licensee exports any such software from the United States or - * re-exports any such software from a foreign destination, Licensee shall - * ensure that the distribution and export/re-export of the software is in - * compliance with all laws, regulations, orders, or other restrictions of the - * U.S. Export Administration Regulations. Licensee agrees that neither it nor - * any of its subsidiaries will export/re-export any technical data, process, - * software, or service, directly or indirectly, to any country for which the - * United States government or any agency thereof requires an export license, - * other governmental approval, or letter of assurance, without first obtaining - * such license, approval or letter. - * - *****************************************************************************/ - - -#define __EVREGION_C__ - -#include <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acevents.h> -#include <contrib/dev/acpica/acnamesp.h> -#include <contrib/dev/acpica/acinterp.h> - -#define _COMPONENT ACPI_EVENTS - ACPI_MODULE_NAME ("evregion") - -#define ACPI_NUM_DEFAULT_SPACES 4 - -static UINT8 AcpiGbl_DefaultAddressSpaces[ACPI_NUM_DEFAULT_SPACES] = -{ - ACPI_ADR_SPACE_SYSTEM_MEMORY, - ACPI_ADR_SPACE_SYSTEM_IO, - ACPI_ADR_SPACE_PCI_CONFIG, - ACPI_ADR_SPACE_DATA_TABLE -}; - -/* Local prototypes */ - -static ACPI_STATUS -AcpiEvRegRun ( - ACPI_HANDLE ObjHandle, - UINT32 Level, - void *Context, - void **ReturnValue); - -static ACPI_STATUS -AcpiEvInstallHandler ( - ACPI_HANDLE ObjHandle, - UINT32 Level, - void *Context, - void **ReturnValue); - - -/******************************************************************************* - * - * FUNCTION: AcpiEvInstallRegionHandlers - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Installs the core subsystem default address space handlers. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvInstallRegionHandlers ( - void) -{ - ACPI_STATUS Status; - ACPI_NATIVE_UINT i; - - - ACPI_FUNCTION_TRACE (EvInstallRegionHandlers); - - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* - * All address spaces (PCI Config, EC, SMBus) are scope dependent - * and registration must occur for a specific device. - * - * In the case of the system memory and IO address spaces there is currently - * no device associated with the address space. For these we use the root. - * - * We install the default PCI config space handler at the root so - * that this space is immediately available even though the we have - * not enumerated all the PCI Root Buses yet. This is to conform - * to the ACPI specification which states that the PCI config - * space must be always available -- even though we are nowhere - * near ready to find the PCI root buses at this point. - * - * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler - * has already been installed (via AcpiInstallAddressSpaceHandler). - * Similar for AE_SAME_HANDLER. - */ - for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) - { - Status = AcpiEvInstallSpaceHandler (AcpiGbl_RootNode, - AcpiGbl_DefaultAddressSpaces[i], - ACPI_DEFAULT_HANDLER, NULL, NULL); - switch (Status) - { - case AE_OK: - case AE_SAME_HANDLER: - case AE_ALREADY_EXISTS: - - /* These exceptions are all OK */ - - Status = AE_OK; - break; - - default: - - goto UnlockAndExit; - } - } - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvInitializeOpRegions - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Execute _REG methods for all Operation Regions that have - * an installed default region handler. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvInitializeOpRegions ( - void) -{ - ACPI_STATUS Status; - ACPI_NATIVE_UINT i; - - - ACPI_FUNCTION_TRACE (EvInitializeOpRegions); - - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* - * Run the _REG methods for OpRegions in each default address space - */ - for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) - { - /* TBD: Make sure handler is the DEFAULT handler, otherwise - * _REG will have already been run. - */ - Status = AcpiEvExecuteRegMethods (AcpiGbl_RootNode, - AcpiGbl_DefaultAddressSpaces[i]); - } - - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvExecuteRegMethod - * - * PARAMETERS: RegionObj - Region object - * Function - Passed to _REG: On (1) or Off (0) - * - * RETURN: Status - * - * DESCRIPTION: Execute _REG method for a region - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvExecuteRegMethod ( - ACPI_OPERAND_OBJECT *RegionObj, - UINT32 Function) -{ - ACPI_EVALUATE_INFO *Info; - ACPI_OPERAND_OBJECT *Args[3]; - ACPI_OPERAND_OBJECT *RegionObj2; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (EvExecuteRegMethod); - - - RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); - if (!RegionObj2) - { - return_ACPI_STATUS (AE_NOT_EXIST); - } - - if (RegionObj2->Extra.Method_REG == NULL) - { - return_ACPI_STATUS (AE_OK); - } - - /* Allocate and initialize the evaluation information block */ - - Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); - if (!Info) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - Info->PrefixNode = RegionObj2->Extra.Method_REG; - Info->Pathname = NULL; - Info->Parameters = Args; - Info->ParameterType = ACPI_PARAM_ARGS; - Info->Flags = ACPI_IGNORE_RETURN_VALUE; - - /* - * The _REG method has two arguments: - * - * Arg0 - Integer: - * Operation region space ID Same value as RegionObj->Region.SpaceId - * - * Arg1 - Integer: - * connection status 1 for connecting the handler, 0 for disconnecting - * the handler (Passed as a parameter) - */ - Args[0] = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); - if (!Args[0]) - { - Status = AE_NO_MEMORY; - goto Cleanup1; - } - - Args[1] = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); - if (!Args[1]) - { - Status = AE_NO_MEMORY; - goto Cleanup2; - } - - /* Setup the parameter objects */ - - Args[0]->Integer.Value = RegionObj->Region.SpaceId; - Args[1]->Integer.Value = Function; - Args[2] = NULL; - - /* Execute the method, no return value */ - - ACPI_DEBUG_EXEC ( - AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Info->PrefixNode, NULL)); - - Status = AcpiNsEvaluate (Info); - AcpiUtRemoveReference (Args[1]); - -Cleanup2: - AcpiUtRemoveReference (Args[0]); - -Cleanup1: - ACPI_FREE (Info); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvAddressSpaceDispatch - * - * PARAMETERS: RegionObj - Internal region object - * Function - Read or Write operation - * Address - Where in the space to read or write - * BitWidth - Field width in bits (8, 16, 32, or 64) - * Value - Pointer to in or out value, must be - * full 64-bit ACPI_INTEGER - * - * RETURN: Status - * - * DESCRIPTION: Dispatch an address space or operation region access to - * a previously installed handler. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvAddressSpaceDispatch ( - ACPI_OPERAND_OBJECT *RegionObj, - UINT32 Function, - ACPI_PHYSICAL_ADDRESS Address, - UINT32 BitWidth, - ACPI_INTEGER *Value) -{ - ACPI_STATUS Status; - ACPI_ADR_SPACE_HANDLER Handler; - ACPI_ADR_SPACE_SETUP RegionSetup; - ACPI_OPERAND_OBJECT *HandlerDesc; - ACPI_OPERAND_OBJECT *RegionObj2; - void *RegionContext = NULL; - - - ACPI_FUNCTION_TRACE (EvAddressSpaceDispatch); - - - RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); - if (!RegionObj2) - { - return_ACPI_STATUS (AE_NOT_EXIST); - } - - /* Ensure that there is a handler associated with this region */ - - HandlerDesc = RegionObj->Region.Handler; - if (!HandlerDesc) - { - ACPI_ERROR ((AE_INFO, - "No handler for Region [%4.4s] (%p) [%s]", - AcpiUtGetNodeName (RegionObj->Region.Node), - RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId))); - - return_ACPI_STATUS (AE_NOT_EXIST); - } - - /* - * It may be the case that the region has never been initialized - * Some types of regions require special init code - */ - if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)) - { - /* - * This region has not been initialized yet, do it - */ - 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) - */ - AcpiExRelinquishInterpreter (); - - Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE, - HandlerDesc->AddressSpace.Context, &RegionContext); - - /* Re-enter the interpreter */ - - AcpiExReacquireInterpreter (); - - /* 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_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.HandlerFlags & - 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. - */ - AcpiExRelinquishInterpreter(); - } - - /* 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.HandlerFlags & - ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) - { - /* - * We just returned from a non-default handler, we must re-enter the - * interpreter - */ - AcpiExReacquireInterpreter (); - } - - 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; - } - } - - /* - * If the region has been activated, call the setup handler - * with the deactivate notification - */ - if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE) - { - 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 handler - deactivate, [%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 must 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; - UINT8 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.HandlerFlags = 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); -} - |
