/****************************************************************************** * * Module Name: tbinstal - ACPI table installation and removal * $Revision: 33 $ * *****************************************************************************/ /****************************************************************************** * * 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 __TBINSTAL_C__ #include "acpi.h" #include "achware.h" #include "actables.h" #define _COMPONENT TABLE_MANAGER MODULE_NAME ("tbinstal") /******************************************************************************* * * FUNCTION: AcpiTbInstallTable * * PARAMETERS: TablePtr - Input buffer pointer, optional * TableInfo - Return value from AcpiTbGetTable * * RETURN: Status * * DESCRIPTION: Load and validate all tables other than the RSDT. The RSDT must * already be loaded and validated. * Install the table into the global data structs. * ******************************************************************************/ ACPI_STATUS AcpiTbInstallTable ( ACPI_TABLE_HEADER *TablePtr, ACPI_TABLE_DESC *TableInfo) { ACPI_STATUS Status; FUNCTION_TRACE ("TbInstallTable"); /* * Check the table signature and make sure it is recognized * Also checks the header checksum */ Status = AcpiTbRecognizeTable (TablePtr, TableInfo); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Lock tables while installing */ AcpiCmAcquireMutex (ACPI_MTX_TABLES); /* Install the table into the global data structure */ Status = AcpiTbInitTableDescriptor (TableInfo->Type, TableInfo); DEBUG_PRINT (ACPI_INFO, ("%s located at %p\n", AcpiGbl_AcpiTableData[TableInfo->Type].Name, TableInfo->Pointer)); AcpiCmReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbRecognizeTable * * PARAMETERS: TablePtr - Input buffer pointer, optional * TableInfo - Return value from AcpiTbGetTable * * RETURN: Status * * DESCRIPTION: Check a table signature for a match against known table types * * NOTE: All table pointers are validated as follows: * 1) Table pointer must point to valid physical memory * 2) Signature must be 4 ASCII chars, even if we don't recognize the * name * 3) Table must be readable for length specified in the header * 4) Table checksum must be valid (with the exception of the FACS * which has no checksum for some odd reason) * ******************************************************************************/ ACPI_STATUS AcpiTbRecognizeTable ( ACPI_TABLE_HEADER *TablePtr, ACPI_TABLE_DESC *TableInfo) { ACPI_TABLE_HEADER *TableHeader; ACPI_STATUS Status; ACPI_TABLE_TYPE TableType = 0; UINT32 i; FUNCTION_TRACE ("TbRecognizeTable"); /* Ensure that we have a valid table pointer */ TableHeader = (ACPI_TABLE_HEADER *) TableInfo->Pointer; if (!TableHeader) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* * Search for a signature match among the known table types * Start at index one -> Skip the RSDP */ Status = AE_SUPPORT; for (i = 1; i < NUM_ACPI_TABLES; i++) { if (!STRNCMP (TableHeader->Signature, AcpiGbl_AcpiTableData[i].Signature, AcpiGbl_AcpiTableData[i].SigLength)) { /* * Found a signature match, get the pertinent info from the * TableData structure */ TableType = i; Status = AcpiGbl_AcpiTableData[i].Status; DEBUG_PRINT (ACPI_INFO, ("TbRecognizeTable: Found %4.4s\n", AcpiGbl_AcpiTableData[i].Signature)); break; } } /* Return the table type and length via the info struct */ TableInfo->Type = (UINT8) TableType; TableInfo->Length = TableHeader->Length; /* * Validate checksum for _most_ tables, * even the ones whose signature we don't recognize */ if (TableType != ACPI_TABLE_FACS) { /* But don't abort if the checksum is wrong */ /* TBD: [Future] make this a configuration option? */ AcpiTbVerifyTableChecksum (TableHeader); } /* * An AE_SUPPORT means that the table was not recognized. * We basically ignore this; just print a debug message */ if (Status == AE_SUPPORT) { DEBUG_PRINT (ACPI_INFO, ("Unsupported table %s (Type %d) was found and discarded\n", AcpiGbl_AcpiTableData[TableType].Name, TableType)); } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbInitTableDescriptor * * PARAMETERS: TableType - The type of the table * TableInfo - A table info struct * * RETURN: None. * * DESCRIPTION: Install a table into the global data structs. * ******************************************************************************/ ACPI_STATUS AcpiTbInitTableDescriptor ( ACPI_TABLE_TYPE TableType, ACPI_TABLE_DESC *TableInfo) { ACPI_TABLE_DESC *ListHead; ACPI_TABLE_DESC *TableDesc; FUNCTION_TRACE_U32 ("TbInitTableDescriptor", TableType); /* * Install the table into the global data structure */ ListHead = &AcpiGbl_AcpiTables[TableType]; TableDesc = ListHead; /* * Two major types of tables: 1) Only one instance is allowed. This * includes most ACPI tables such as the DSDT. 2) Multiple instances of * the table are allowed. This includes SSDT and PSDTs. */ if (IS_SINGLE_TABLE (AcpiGbl_AcpiTableData[TableType].Flags)) { /* * Only one table allowed, and a table has alread been installed * at this location, so return an error. */ if (ListHead->Pointer) { return_ACPI_STATUS (AE_EXIST); } TableDesc->Count = 1; } else { /* * Multiple tables allowed for this table type, we must link * the new table in to the list of tables of this type. */ if (ListHead->Pointer) { TableDesc = AcpiCmCallocate (sizeof (ACPI_TABLE_DESC)); if (!TableDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } ListHead->Count++; /* Update the original previous */ ListHead->Prev->Next = TableDesc; /* Update new entry */ TableDesc->Prev = ListHead->Prev; TableDesc->Next = ListHead; /* Update list head */ ListHead->Prev = TableDesc; } else { TableDesc->Count = 1; } } /* Common initialization of the table descriptor */ TableDesc->Pointer = TableInfo->Pointer; TableDesc->BasePointer = TableInfo->BasePointer; TableDesc->Length = TableInfo->Length; TableDesc->Allocation = TableInfo->Allocation; TableDesc->AmlPointer = (UINT8 *) (TableDesc->Pointer + 1), TableDesc->AmlLength = (UINT32) (TableDesc->Length - (UINT32) sizeof (ACPI_TABLE_HEADER)); TableDesc->TableId = AcpiCmAllocateOwnerId (OWNER_TYPE_TABLE); TableDesc->LoadedIntoNamespace = FALSE; /* * Set the appropriate global pointer (if there is one) to point to the * newly installed table */ if (AcpiGbl_AcpiTableData[TableType].GlobalPtr) { *(AcpiGbl_AcpiTableData[TableType].GlobalPtr) = TableInfo->Pointer; } /* Return Data */ TableInfo->TableId = TableDesc->TableId; TableInfo->InstalledDesc = TableDesc; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiTbDeleteAcpiTables * * PARAMETERS: None. * * RETURN: None. * * DESCRIPTION: Delete all internal ACPI tables * ******************************************************************************/ void AcpiTbDeleteAcpiTables (void) { ACPI_TABLE_TYPE Type; /* * Free memory allocated for ACPI tables * Memory can either be mapped or allocated */ for (Type = 0; Type < NUM_ACPI_TABLES; Type++) { AcpiTbDeleteAcpiTable (Type); } } /******************************************************************************* * * FUNCTION: AcpiTbDeleteAcpiTable * * PARAMETERS: Type - The table type to be deleted * * RETURN: None. * * DESCRIPTION: Delete an internal ACPI table * Locks the ACPI table mutex * ******************************************************************************/ void AcpiTbDeleteAcpiTable ( ACPI_TABLE_TYPE Type) { FUNCTION_TRACE_U32 ("TbDeleteAcpiTable", Type); if (Type > ACPI_TABLE_MAX) { return_VOID; } AcpiCmAcquireMutex (ACPI_MTX_TABLES); /* Free the table */ AcpiTbFreeAcpiTablesOfType (&AcpiGbl_AcpiTables[Type]); /* Clear the appropriate "typed" global table pointer */ switch (Type) { case ACPI_TABLE_RSDP: AcpiGbl_RSDP = NULL; break; case ACPI_TABLE_DSDT: AcpiGbl_DSDT = NULL; break; case ACPI_TABLE_FADT: AcpiGbl_FADT = NULL; break; case ACPI_TABLE_FACS: AcpiGbl_FACS = NULL; break; case ACPI_TABLE_XSDT: AcpiGbl_XSDT = NULL; break; case ACPI_TABLE_SSDT: case ACPI_TABLE_PSDT: default: break; } AcpiCmReleaseMutex (ACPI_MTX_TABLES); return_VOID; } /******************************************************************************* * * FUNCTION: AcpiTbFreeAcpiTablesOfType * * PARAMETERS: TableInfo - A table info struct * * RETURN: None. * * DESCRIPTION: Free the memory associated with an internal ACPI table * Table mutex should be locked. * ******************************************************************************/ void AcpiTbFreeAcpiTablesOfType ( ACPI_TABLE_DESC *ListHead) { ACPI_TABLE_DESC *TableDesc; UINT32 Count; UINT32 i; FUNCTION_TRACE_PTR ("TbFreeAcpiTablesOfType", ListHead); /* Get the head of the list */ TableDesc = ListHead; Count = ListHead->Count; /* * Walk the entire list, deleting both the allocated tables * and the table descriptors */ for (i = 0; i < Count; i++) { TableDesc = AcpiTbUninstallTable (TableDesc); } return_VOID; } /******************************************************************************* * * FUNCTION: AcpiTbDeleteSingleTable * * PARAMETERS: TableInfo - A table info struct * * RETURN: None. * * DESCRIPTION: Low-level free for a single ACPI table. Handles cases where * the table was allocated a buffer or was mapped. * ******************************************************************************/ void AcpiTbDeleteSingleTable ( ACPI_TABLE_DESC *TableDesc) { if (!TableDesc) { return; } if (TableDesc->Pointer) { /* Valid table, determine type of memory allocation */ switch (TableDesc->Allocation) { case ACPI_MEM_NOT_ALLOCATED: break; case ACPI_MEM_ALLOCATED: AcpiCmFree (TableDesc->BasePointer); break; case ACPI_MEM_MAPPED: AcpiOsUnmapMemory (TableDesc->BasePointer, TableDesc->Length); break; } } } /******************************************************************************* * * FUNCTION: AcpiTbUninstallTable * * PARAMETERS: TableInfo - A table info struct * * RETURN: None. * * DESCRIPTION: Free the memory associated with an internal ACPI table that * is either installed or has never been installed. * Table mutex should be locked. * ******************************************************************************/ ACPI_TABLE_DESC * AcpiTbUninstallTable ( ACPI_TABLE_DESC *TableDesc) { ACPI_TABLE_DESC *NextDesc; FUNCTION_TRACE_PTR ("TbDeleteSingleTable", TableDesc); if (!TableDesc) { return_PTR (NULL); } /* Unlink the descriptor */ if (TableDesc->Prev) { TableDesc->Prev->Next = TableDesc->Next; } if (TableDesc->Next) { TableDesc->Next->Prev = TableDesc->Prev; } /* Free the memory allocated for the table itself */ AcpiTbDeleteSingleTable (TableDesc); /* Free the table descriptor (Don't delete the list head, tho) */ if ((TableDesc->Prev) == (TableDesc->Next)) { NextDesc = NULL; /* Clear the list head */ TableDesc->Pointer = NULL; TableDesc->Length = 0; TableDesc->Count = 0; } else { /* Free the table descriptor */ NextDesc = TableDesc->Next; AcpiCmFree (TableDesc); } return_PTR (NextDesc); }