+++ /dev/null
-/******************************************************************************
- *
- * Module Name: evrgnini- ACPI AddressSpace (OpRegion) init
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2017, Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions, and the following disclaimer,
- * without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- * substantially similar to the "NO WARRANTY" disclaimer below
- * ("Disclaimer") and any redistribution must be conditioned upon
- * including a substantially similar Disclaimer requirement for further
- * binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- * of any contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
-
-#include "acpi.h"
-#include "accommon.h"
-#include "acevents.h"
-#include "acnamesp.h"
-#include "acinterp.h"
-
-#define _COMPONENT ACPI_EVENTS
- ACPI_MODULE_NAME ("evrgnini")
-
-/* Local prototypes */
-
-static BOOLEAN
-AcpiEvIsPciRootBridge (
- ACPI_NAMESPACE_NODE *Node);
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiEvSystemMemoryRegionSetup
- *
- * PARAMETERS: Handle - Region we are interested in
- * Function - Start or stop
- * HandlerContext - Address space handler context
- * RegionContext - Region specific context
- *
- * RETURN: Status
- *
- * DESCRIPTION: Setup a SystemMemory operation region
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvSystemMemoryRegionSetup (
- ACPI_HANDLE Handle,
- UINT32 Function,
- void *HandlerContext,
- void **RegionContext)
-{
- ACPI_OPERAND_OBJECT *RegionDesc = (ACPI_OPERAND_OBJECT *) Handle;
- ACPI_MEM_SPACE_CONTEXT *LocalRegionContext;
-
-
- ACPI_FUNCTION_TRACE (EvSystemMemoryRegionSetup);
-
-
- if (Function == ACPI_REGION_DEACTIVATE)
- {
- if (*RegionContext)
- {
- LocalRegionContext = (ACPI_MEM_SPACE_CONTEXT *) *RegionContext;
-
- /* Delete a cached mapping if present */
-
- if (LocalRegionContext->MappedLength)
- {
- AcpiOsUnmapMemory (LocalRegionContext->MappedLogicalAddress,
- LocalRegionContext->MappedLength);
- }
- ACPI_FREE (LocalRegionContext);
- *RegionContext = NULL;
- }
- return_ACPI_STATUS (AE_OK);
- }
-
- /* Create a new context */
-
- LocalRegionContext = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_MEM_SPACE_CONTEXT));
- if (!(LocalRegionContext))
- {
- return_ACPI_STATUS (AE_NO_MEMORY);
- }
-
- /* Save the region length and address for use in the handler */
-
- LocalRegionContext->Length = RegionDesc->Region.Length;
- LocalRegionContext->Address = RegionDesc->Region.Address;
-
- *RegionContext = LocalRegionContext;
- return_ACPI_STATUS (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiEvIoSpaceRegionSetup
- *
- * PARAMETERS: Handle - Region we are interested in
- * Function - Start or stop
- * HandlerContext - Address space handler context
- * RegionContext - Region specific context
- *
- * RETURN: Status
- *
- * DESCRIPTION: Setup a IO operation region
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvIoSpaceRegionSetup (
- ACPI_HANDLE Handle,
- UINT32 Function,
- void *HandlerContext,
- void **RegionContext)
-{
- ACPI_FUNCTION_TRACE (EvIoSpaceRegionSetup);
-
-
- if (Function == ACPI_REGION_DEACTIVATE)
- {
- *RegionContext = NULL;
- }
- else
- {
- *RegionContext = HandlerContext;
- }
-
- return_ACPI_STATUS (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiEvPciConfigRegionSetup
- *
- * PARAMETERS: Handle - Region we are interested in
- * Function - Start or stop
- * HandlerContext - Address space handler context
- * RegionContext - Region specific context
- *
- * RETURN: Status
- *
- * DESCRIPTION: Setup a PCI_Config operation region
- *
- * MUTEX: Assumes namespace is not locked
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvPciConfigRegionSetup (
- ACPI_HANDLE Handle,
- UINT32 Function,
- void *HandlerContext,
- void **RegionContext)
-{
- ACPI_STATUS Status = AE_OK;
- UINT64 PciValue;
- ACPI_PCI_ID *PciId = *RegionContext;
- ACPI_OPERAND_OBJECT *HandlerObj;
- ACPI_NAMESPACE_NODE *ParentNode;
- ACPI_NAMESPACE_NODE *PciRootNode;
- ACPI_NAMESPACE_NODE *PciDeviceNode;
- ACPI_OPERAND_OBJECT *RegionObj = (ACPI_OPERAND_OBJECT *) Handle;
-
-
- ACPI_FUNCTION_TRACE (EvPciConfigRegionSetup);
-
-
- HandlerObj = RegionObj->Region.Handler;
- if (!HandlerObj)
- {
- /*
- * No installed handler. This shouldn't happen because the dispatch
- * routine checks before we get here, but we check again just in case.
- */
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "Attempting to init a region %p, with no handler\n", RegionObj));
- return_ACPI_STATUS (AE_NOT_EXIST);
- }
-
- *RegionContext = NULL;
- if (Function == ACPI_REGION_DEACTIVATE)
- {
- if (PciId)
- {
- ACPI_FREE (PciId);
- }
- return_ACPI_STATUS (Status);
- }
-
- ParentNode = RegionObj->Region.Node->Parent;
-
- /*
- * Get the _SEG and _BBN values from the device upon which the handler
- * is installed.
- *
- * We need to get the _SEG and _BBN objects relative to the PCI BUS device.
- * This is the device the handler has been registered to handle.
- */
-
- /*
- * If the AddressSpace.Node is still pointing to the root, we need
- * to scan upward for a PCI Root bridge and re-associate the OpRegion
- * handlers with that device.
- */
- if (HandlerObj->AddressSpace.Node == AcpiGbl_RootNode)
- {
- /* Start search from the parent object */
-
- PciRootNode = ParentNode;
- while (PciRootNode != AcpiGbl_RootNode)
- {
- /* Get the _HID/_CID in order to detect a RootBridge */
-
- if (AcpiEvIsPciRootBridge (PciRootNode))
- {
- /* Install a handler for this PCI root bridge */
-
- Status = AcpiInstallAddressSpaceHandler (
- (ACPI_HANDLE) PciRootNode,
- ACPI_ADR_SPACE_PCI_CONFIG,
- ACPI_DEFAULT_HANDLER, NULL, NULL);
- if (ACPI_FAILURE (Status))
- {
- if (Status == AE_SAME_HANDLER)
- {
- /*
- * It is OK if the handler is already installed on the
- * root bridge. Still need to return a context object
- * for the new PCI_Config operation region, however.
- */
- Status = AE_OK;
- }
- else
- {
- ACPI_EXCEPTION ((AE_INFO, Status,
- "Could not install PciConfig handler "
- "for Root Bridge %4.4s",
- AcpiUtGetNodeName (PciRootNode)));
- }
- }
- break;
- }
-
- PciRootNode = PciRootNode->Parent;
- }
-
- /* PCI root bridge not found, use namespace root node */
- }
- else
- {
- PciRootNode = HandlerObj->AddressSpace.Node;
- }
-
- /*
- * If this region is now initialized, we are done.
- * (InstallAddressSpaceHandler could have initialized it)
- */
- if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
- {
- return_ACPI_STATUS (AE_OK);
- }
-
- /* Region is still not initialized. Create a new context */
-
- PciId = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PCI_ID));
- if (!PciId)
- {
- return_ACPI_STATUS (AE_NO_MEMORY);
- }
-
- /*
- * For PCI_Config space access, we need the segment, bus, device and
- * function numbers. Acquire them here.
- *
- * Find the parent device object. (This allows the operation region to be
- * within a subscope under the device, such as a control method.)
- */
- PciDeviceNode = RegionObj->Region.Node;
- while (PciDeviceNode && (PciDeviceNode->Type != ACPI_TYPE_DEVICE))
- {
- PciDeviceNode = PciDeviceNode->Parent;
- }
-
- if (!PciDeviceNode)
- {
- ACPI_FREE (PciId);
- return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
- }
-
- /*
- * Get the PCI device and function numbers from the _ADR object
- * contained in the parent's scope.
- */
- Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR,
- PciDeviceNode, &PciValue);
-
- /*
- * The default is zero, and since the allocation above zeroed the data,
- * just do nothing on failure.
- */
- if (ACPI_SUCCESS (Status))
- {
- PciId->Device = ACPI_HIWORD (ACPI_LODWORD (PciValue));
- PciId->Function = ACPI_LOWORD (ACPI_LODWORD (PciValue));
- }
-
- /* The PCI segment number comes from the _SEG method */
-
- Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG,
- PciRootNode, &PciValue);
- if (ACPI_SUCCESS (Status))
- {
- PciId->Segment = ACPI_LOWORD (PciValue);
- }
-
- /* The PCI bus number comes from the _BBN method */
-
- Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN,
- PciRootNode, &PciValue);
- if (ACPI_SUCCESS (Status))
- {
- PciId->Bus = ACPI_LOWORD (PciValue);
- }
-
- /* Complete/update the PCI ID for this device */
-
- Status = AcpiHwDerivePciId (PciId, PciRootNode, RegionObj->Region.Node);
- if (ACPI_FAILURE (Status))
- {
- ACPI_FREE (PciId);
- return_ACPI_STATUS (Status);
- }
-
- *RegionContext = PciId;
- return_ACPI_STATUS (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiEvIsPciRootBridge
- *
- * PARAMETERS: Node - Device node being examined
- *
- * RETURN: TRUE if device is a PCI/PCI-Express Root Bridge
- *
- * DESCRIPTION: Determine if the input device represents a PCI Root Bridge by
- * examining the _HID and _CID for the device.
- *
- ******************************************************************************/
-
-static BOOLEAN
-AcpiEvIsPciRootBridge (
- ACPI_NAMESPACE_NODE *Node)
-{
- ACPI_STATUS Status;
- ACPI_PNP_DEVICE_ID *Hid;
- ACPI_PNP_DEVICE_ID_LIST *Cid;
- UINT32 i;
- BOOLEAN Match;
-
-
- /* Get the _HID and check for a PCI Root Bridge */
-
- Status = AcpiUtExecute_HID (Node, &Hid);
- if (ACPI_FAILURE (Status))
- {
- return (FALSE);
- }
-
- Match = AcpiUtIsPciRootBridge (Hid->String);
- ACPI_FREE (Hid);
-
- if (Match)
- {
- return (TRUE);
- }
-
- /* The _HID did not match. Get the _CID and check for a PCI Root Bridge */
-
- Status = AcpiUtExecute_CID (Node, &Cid);
- if (ACPI_FAILURE (Status))
- {
- return (FALSE);
- }
-
- /* Check all _CIDs in the returned list */
-
- for (i = 0; i < Cid->Count; i++)
- {
- if (AcpiUtIsPciRootBridge (Cid->Ids[i].String))
- {
- ACPI_FREE (Cid);
- return (TRUE);
- }
- }
-
- ACPI_FREE (Cid);
- return (FALSE);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiEvPciBarRegionSetup
- *
- * PARAMETERS: Handle - Region we are interested in
- * Function - Start or stop
- * HandlerContext - Address space handler context
- * RegionContext - Region specific context
- *
- * RETURN: Status
- *
- * DESCRIPTION: Setup a PciBAR operation region
- *
- * MUTEX: Assumes namespace is not locked
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvPciBarRegionSetup (
- ACPI_HANDLE Handle,
- UINT32 Function,
- void *HandlerContext,
- void **RegionContext)
-{
- ACPI_FUNCTION_TRACE (EvPciBarRegionSetup);
-
-
- return_ACPI_STATUS (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiEvCmosRegionSetup
- *
- * PARAMETERS: Handle - Region we are interested in
- * Function - Start or stop
- * HandlerContext - Address space handler context
- * RegionContext - Region specific context
- *
- * RETURN: Status
- *
- * DESCRIPTION: Setup a CMOS operation region
- *
- * MUTEX: Assumes namespace is not locked
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvCmosRegionSetup (
- ACPI_HANDLE Handle,
- UINT32 Function,
- void *HandlerContext,
- void **RegionContext)
-{
- ACPI_FUNCTION_TRACE (EvCmosRegionSetup);
-
-
- return_ACPI_STATUS (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiEvDefaultRegionSetup
- *
- * PARAMETERS: Handle - Region we are interested in
- * Function - Start or stop
- * HandlerContext - Address space handler context
- * RegionContext - Region specific context
- *
- * RETURN: Status
- *
- * DESCRIPTION: Default region initialization
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvDefaultRegionSetup (
- ACPI_HANDLE Handle,
- UINT32 Function,
- void *HandlerContext,
- void **RegionContext)
-{
- ACPI_FUNCTION_TRACE (EvDefaultRegionSetup);
-
-
- if (Function == ACPI_REGION_DEACTIVATE)
- {
- *RegionContext = NULL;
- }
- else
- {
- *RegionContext = HandlerContext;
- }
-
- return_ACPI_STATUS (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiEvInitializeRegion
- *
- * PARAMETERS: RegionObj - Region we are initializing
- *
- * RETURN: Status
- *
- * DESCRIPTION: Initializes the region, finds any _REG methods and saves them
- * for execution at a later time
- *
- * Get the appropriate address space handler for a newly
- * created region.
- *
- * This also performs address space specific initialization. For
- * example, PCI regions must have an _ADR object that contains
- * a PCI address in the scope of the definition. This address is
- * required to perform an access to PCI config space.
- *
- * MUTEX: Interpreter should be unlocked, because we may run the _REG
- * method for this region.
- *
- * NOTE: Possible incompliance:
- * There is a behavior conflict in automatic _REG execution:
- * 1. When the interpreter is evaluating a method, we can only
- * automatically run _REG for the following case:
- * Method(_REG, 2) {}
- * OperationRegion (OPR1, 0x80, 0x1000010, 0x4)
- * 2. When the interpreter is loading a table, we can also
- * automatically run _REG for the following case:
- * OperationRegion (OPR1, 0x80, 0x1000010, 0x4)
- * Method(_REG, 2) {}
- * Though this may not be compliant to the de-facto standard, the
- * logic is kept in order not to trigger regressions. And keeping
- * this logic should be taken care by the caller of this function.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiEvInitializeRegion (
- ACPI_OPERAND_OBJECT *RegionObj)
-{
- ACPI_OPERAND_OBJECT *HandlerObj;
- ACPI_OPERAND_OBJECT *ObjDesc;
- ACPI_ADR_SPACE_TYPE SpaceId;
- ACPI_NAMESPACE_NODE *Node;
-
-
- ACPI_FUNCTION_TRACE (EvInitializeRegion);
-
-
- if (!RegionObj)
- {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
- }
-
- if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED)
- {
- return_ACPI_STATUS (AE_OK);
- }
-
- RegionObj->Common.Flags |= AOPOBJ_OBJECT_INITIALIZED;
-
- Node = RegionObj->Region.Node->Parent;
- SpaceId = RegionObj->Region.SpaceId;
-
- /*
- * The following loop depends upon the root Node having no parent
- * ie: AcpiGbl_RootNode->Parent being set to NULL
- */
- while (Node)
- {
- /* Check to see if a handler exists */
-
- HandlerObj = NULL;
- ObjDesc = AcpiNsGetAttachedObject (Node);
- if (ObjDesc)
- {
- /* Can only be a handler if the object exists */
-
- switch (Node->Type)
- {
- case ACPI_TYPE_DEVICE:
- case ACPI_TYPE_PROCESSOR:
- case ACPI_TYPE_THERMAL:
-
- HandlerObj = ObjDesc->CommonNotify.Handler;
- break;
-
- case ACPI_TYPE_METHOD:
- /*
- * If we are executing module level code, the original
- * Node's object was replaced by this Method object and we
- * saved the handler in the method object.
- *
- * See AcpiNsExecModuleCode
- */
- if (!AcpiGbl_ParseTableAsTermList &&
- ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL)
- {
- HandlerObj = ObjDesc->Method.Dispatch.Handler;
- }
- break;
-
- default:
-
- /* Ignore other objects */
-
- break;
- }
-
- HandlerObj = AcpiEvFindRegionHandler (SpaceId, HandlerObj);
- if (HandlerObj)
- {
- /* Found correct handler */
-
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "Found handler %p for region %p in obj %p\n",
- HandlerObj, RegionObj, ObjDesc));
-
- (void) AcpiEvAttachRegion (HandlerObj, RegionObj, FALSE);
-
- /*
- * Tell all users that this region is usable by
- * running the _REG method
- */
- AcpiExExitInterpreter ();
- (void) AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_CONNECT);
- AcpiExEnterInterpreter ();
- return_ACPI_STATUS (AE_OK);
- }
- }
-
- /* This node does not have the handler we need; Pop up one level */
-
- Node = Node->Parent;
- }
-
- /*
- * If we get here, there is no handler for this region. This is not
- * fatal because many regions get created before a handler is installed
- * for said region.
- */
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "No handler for RegionType %s(%X) (RegionObj %p)\n",
- AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj));
-
- return_ACPI_STATUS (AE_OK);
-}
projects / reactos.git / blobdiff