/****************************************************************************** * * Module Name: nsinit - namespace initialization * $Revision: 4 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999, 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 __NSXFINIT_C__ #include "acpi.h" #include "acnamesp.h" #include "acdispat.h" #define _COMPONENT NAMESPACE MODULE_NAME ("nsinit") /******************************************************************************* * * FUNCTION: AcpiNsInitializeObjects * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Walk the entire namespace and perform any necessary * initialization on the objects found therein * ******************************************************************************/ ACPI_STATUS AcpiNsInitializeObjects ( void) { ACPI_STATUS Status; ACPI_INIT_WALK_INFO Info; FUNCTION_TRACE ("NsInitializeObjects"); DEBUG_PRINT (TRACE_DISPATCH, ("NsInitializeObjects: **** Starting initialization of namespace objects ****\n")); DEBUG_PRINT_RAW (ACPI_OK, ("Completing Region and Field initialization:")); Info.FieldCount = 0; Info.FieldInit = 0; Info.OpRegionCount = 0; Info.OpRegionInit = 0; Info.ObjectCount = 0; /* Walk entire namespace from the supplied root */ Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, AcpiNsInitOneObject, &Info, NULL); if (ACPI_FAILURE (Status)) { DEBUG_PRINT (ACPI_ERROR, ("NsInitializeObjects: WalkNamespace failed! %x\n", Status)); } DEBUG_PRINT_RAW (ACPI_OK, ("\n%d/%d Regions, %d/%d Fields initialized (%d nodes total)\n", Info.OpRegionInit, Info.OpRegionCount, Info.FieldInit, Info.FieldCount, Info.ObjectCount)); DEBUG_PRINT (TRACE_DISPATCH, ("NsInitializeObjects: %d Control Methods found\n", Info.MethodCount)); DEBUG_PRINT (TRACE_DISPATCH, ("NsInitializeObjects: %d Op Regions found\n", Info.OpRegionCount)); return_ACPI_STATUS (AE_OK); } /****************************************************************************** * * FUNCTION: AcpiNsInitializeDevices * * PARAMETERS: None * * RETURN: ACPI_STATUS * * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices. * This means running _INI on all present devices. * * Also: Install PCI config space handler for all PCI root bridges. * A PCI root bridge is found by searching for devices containing * a HID with the value EISAID("PNP0A03") * *****************************************************************************/ ACPI_STATUS AcpiNsInitializeDevices ( UINT32 Flags) { ACPI_STATUS Status; ACPI_DEVICE_WALK_INFO Info; FUNCTION_TRACE ("NsInitializeDevices"); Info.Flags = Flags; Info.DeviceCount = 0; Info.Num_STA = 0; Info.Num_INI = 0; Info.Num_HID = 0; Info.Num_PCI = 0; DEBUG_PRINT_RAW (ACPI_OK, ("Executing device _INI methods:")); Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, &Info, NULL); if (ACPI_FAILURE (Status)) { DEBUG_PRINT (ACPI_ERROR, ("NsInitializeDevices: WalkNamespace failed! %x\n", Status)); } DEBUG_PRINT_RAW (ACPI_OK, ("\n%d Devices found: %d _STA, %d _INI, %d _HID, %d PCIRoot\n", Info.DeviceCount, Info.Num_STA, Info.Num_INI, Info.Num_HID, Info.Num_PCI)); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiNsInitOneObject * * PARAMETERS: ObjHandle - Node * Level - Current nesting level * Context - Points to a init info struct * ReturnValue - Not used * * RETURN: Status * * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object * within the namespace. * * Currently, the only objects that require initialization are: * 1) Methods * 2) Op Regions * ******************************************************************************/ ACPI_STATUS AcpiNsInitOneObject ( ACPI_HANDLE ObjHandle, UINT32 Level, void *Context, void **ReturnValue) { OBJECT_TYPE_INTERNAL Type; ACPI_STATUS Status; ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; ACPI_OPERAND_OBJECT *ObjDesc; Info->ObjectCount++; /* And even then, we are only interested in a few object types */ Type = AcpiNsGetType (ObjHandle); ObjDesc = Node->Object; if (!ObjDesc) { return (AE_OK); } switch (Type) { case ACPI_TYPE_REGION: Info->OpRegionCount++; if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) { break; } Info->OpRegionInit++; Status = AcpiDsGetRegionArguments (ObjDesc); DEBUG_PRINT_RAW (ACPI_OK, (".")); break; case ACPI_TYPE_FIELD_UNIT: Info->FieldCount++; if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) { break; } Info->FieldInit++; Status = AcpiDsGetFieldUnitArguments (ObjDesc); DEBUG_PRINT_RAW (ACPI_OK, (".")); break; default: break; } /* * We ignore errors from above, and always return OK, since * we don't want to abort the walk on a single error. */ return (AE_OK); } /****************************************************************************** * * FUNCTION: AcpiNsInitOneDevice * * PARAMETERS: The usual "I'm a namespace callback" stuff * * RETURN: ACPI_STATUS * * DESCRIPTION: This is called once per device soon after ACPI is enabled * to initialize each device. It determines if the device is * present, and if so, calls _INI. * *****************************************************************************/ ACPI_STATUS AcpiNsInitOneDevice ( ACPI_HANDLE ObjHandle, UINT32 NestingLevel, void *Context, void **ReturnValue) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *RetObj = NULL; ACPI_NAMESPACE_NODE *Node; UINT32 Flags; ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; FUNCTION_TRACE ("AcpiNsInitOneDevice"); DEBUG_PRINT_RAW (ACPI_OK, (".")); Info->DeviceCount++; AcpiCmAcquireMutex (ACPI_MTX_NAMESPACE); Node = AcpiNsConvertHandleToEntry (ObjHandle); if (!Node) { AcpiCmReleaseMutex (ACPI_MTX_NAMESPACE); return (AE_BAD_PARAMETER); } AcpiCmReleaseMutex (ACPI_MTX_NAMESPACE); /* * Run _STA to determine if we can run _INI on the device. */ Status = AcpiCmExecute_STA (Node, &Flags); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Info->Num_STA++; if (!(Flags & 0x01)) { /* don't look at children of a not present device */ return_ACPI_STATUS(AE_CTRL_DEPTH); } /* * The device is present. Run _INI. */ Status = AcpiNsEvaluateRelative (ObjHandle, "_INI", NULL, NULL); if (AE_NOT_FOUND == Status) { /* No _INI means device requires no initialization */ } else if (ACPI_FAILURE (Status)) { #ifdef ACPI_DEBUG NATIVE_CHAR *ScopeName = AcpiNsGetTablePathname (ObjHandle); DEBUG_PRINT (ACPI_ERROR, ("%s._INI failed: %s\n", ScopeName, AcpiCmFormatException (Status))); AcpiCmFree (ScopeName); #endif return_ACPI_STATUS (Status); } else { Info->Num_INI++; } /* * Examine the HID of the device. _HID can be an executable * control method -- it simply has to return a string or number * containing the HID. */ if (RetObj) { AcpiCmRemoveReference (RetObj); } RetObj = NULL; Status = AcpiNsEvaluateRelative (ObjHandle, "_HID", NULL, &RetObj); if (AE_NOT_FOUND == Status) { /* No _HID --> Can't be a PCI root bridge */ return_ACPI_STATUS (AE_OK); } if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Info->Num_HID++; /* * Found an _HID object. * Check for a PCI Root Bridge. We need to install the PCI_CONFIG space * handler on all PCI Root Bridges found within the namespace * * A PCI Root Bridge has an HID with the value EISAID("PNP0A03") * The HID can be either a number or a string. */ switch (RetObj->Common.Type) { case ACPI_TYPE_NUMBER: if (RetObj->Number.Value != PCI_ROOT_HID_VALUE) { goto Cleanup; } break; case ACPI_TYPE_STRING: if (STRNCMP (RetObj->String.Pointer, PCI_ROOT_HID_STRING, sizeof (PCI_ROOT_HID_STRING))) { goto Cleanup; } break; default: goto Cleanup; } /* * We found a valid PCI_ROOT_HID. * The parent of the HID entry is the PCI device; Install the default PCI * handler for this PCI device. */ Info->Num_PCI++; if (!(Info->Flags & ACPI_NO_PCI_INIT)) { Status = AcpiInstallAddressSpaceHandler (ObjHandle, ADDRESS_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); } Cleanup: if (RetObj) { AcpiCmRemoveReference (RetObj); } return_ACPI_STATUS (AE_OK); }