/****************************************************************************** * * Module Name: tbdata - Table manager data structure functions * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2021, 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. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * 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. * * 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 MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * 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 DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include "acpi.h" #include "accommon.h" #include "acnamesp.h" #include "actables.h" #include "acevents.h" #define _COMPONENT ACPI_TABLES ACPI_MODULE_NAME ("tbdata") /* Local prototypes */ static ACPI_STATUS AcpiTbCheckDuplication ( ACPI_TABLE_DESC *TableDesc, UINT32 *TableIndex); static BOOLEAN AcpiTbCompareTables ( ACPI_TABLE_DESC *TableDesc, UINT32 TableIndex); /******************************************************************************* * * FUNCTION: AcpiTbCompareTables * * PARAMETERS: TableDesc - Table 1 descriptor to be compared * TableIndex - Index of table 2 to be compared * * RETURN: TRUE if both tables are identical. * * DESCRIPTION: This function compares a table with another table that has * already been installed in the root table list. * ******************************************************************************/ static BOOLEAN AcpiTbCompareTables ( ACPI_TABLE_DESC *TableDesc, UINT32 TableIndex) { ACPI_STATUS Status = AE_OK; BOOLEAN IsIdentical; ACPI_TABLE_HEADER *Table; UINT32 TableLength; UINT8 TableFlags; Status = AcpiTbAcquireTable (&AcpiGbl_RootTableList.Tables[TableIndex], &Table, &TableLength, &TableFlags); if (ACPI_FAILURE (Status)) { return (FALSE); } /* * Check for a table match on the entire table length, * not just the header. */ IsIdentical = (BOOLEAN)((TableDesc->Length != TableLength || memcmp (TableDesc->Pointer, Table, TableLength)) ? FALSE : TRUE); /* Release the acquired table */ AcpiTbReleaseTable (Table, TableLength, TableFlags); return (IsIdentical); } /******************************************************************************* * * FUNCTION: AcpiTbInitTableDescriptor * * PARAMETERS: TableDesc - Table descriptor * Address - Physical address of the table * Flags - Allocation flags of the table * Table - Pointer to the table * * RETURN: None * * DESCRIPTION: Initialize a new table descriptor * ******************************************************************************/ void AcpiTbInitTableDescriptor ( ACPI_TABLE_DESC *TableDesc, ACPI_PHYSICAL_ADDRESS Address, UINT8 Flags, ACPI_TABLE_HEADER *Table) { /* * Initialize the table descriptor. Set the pointer to NULL, since the * table is not fully mapped at this time. */ memset (TableDesc, 0, sizeof (ACPI_TABLE_DESC)); TableDesc->Address = Address; TableDesc->Length = Table->Length; TableDesc->Flags = Flags; ACPI_MOVE_32_TO_32 (TableDesc->Signature.Ascii, Table->Signature); } /******************************************************************************* * * FUNCTION: AcpiTbAcquireTable * * PARAMETERS: TableDesc - Table descriptor * TablePtr - Where table is returned * TableLength - Where table length is returned * TableFlags - Where table allocation flags are returned * * RETURN: Status * * DESCRIPTION: Acquire an ACPI table. It can be used for tables not * maintained in the AcpiGbl_RootTableList. * ******************************************************************************/ ACPI_STATUS AcpiTbAcquireTable ( ACPI_TABLE_DESC *TableDesc, ACPI_TABLE_HEADER **TablePtr, UINT32 *TableLength, UINT8 *TableFlags) { ACPI_TABLE_HEADER *Table = NULL; switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) { case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: Table = AcpiOsMapMemory (TableDesc->Address, TableDesc->Length); break; case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: Table = ACPI_CAST_PTR (ACPI_TABLE_HEADER, ACPI_PHYSADDR_TO_PTR (TableDesc->Address)); break; default: break; } /* Table is not valid yet */ if (!Table) { return (AE_NO_MEMORY); } /* Fill the return values */ *TablePtr = Table; *TableLength = TableDesc->Length; *TableFlags = TableDesc->Flags; return (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiTbReleaseTable * * PARAMETERS: Table - Pointer for the table * TableLength - Length for the table * TableFlags - Allocation flags for the table * * RETURN: None * * DESCRIPTION: Release a table. The inverse of AcpiTbAcquireTable(). * ******************************************************************************/ void AcpiTbReleaseTable ( ACPI_TABLE_HEADER *Table, UINT32 TableLength, UINT8 TableFlags) { switch (TableFlags & ACPI_TABLE_ORIGIN_MASK) { case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: AcpiOsUnmapMemory (Table, TableLength); break; case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: default: break; } } /******************************************************************************* * * FUNCTION: AcpiTbAcquireTempTable * * PARAMETERS: TableDesc - Table descriptor to be acquired * Address - Address of the table * Flags - Allocation flags of the table * * RETURN: Status * * DESCRIPTION: This function validates the table header to obtain the length * of a table and fills the table descriptor to make its state as * "INSTALLED". Such a table descriptor is only used for verified * installation. * ******************************************************************************/ ACPI_STATUS AcpiTbAcquireTempTable ( ACPI_TABLE_DESC *TableDesc, ACPI_PHYSICAL_ADDRESS Address, UINT8 Flags) { ACPI_TABLE_HEADER *TableHeader; switch (Flags & ACPI_TABLE_ORIGIN_MASK) { case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: /* Get the length of the full table from the header */ TableHeader = AcpiOsMapMemory (Address, sizeof (ACPI_TABLE_HEADER)); if (!TableHeader) { return (AE_NO_MEMORY); } AcpiTbInitTableDescriptor (TableDesc, Address, Flags, TableHeader); AcpiOsUnmapMemory (TableHeader, sizeof (ACPI_TABLE_HEADER)); return (AE_OK); case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: TableHeader = ACPI_CAST_PTR (ACPI_TABLE_HEADER, ACPI_PHYSADDR_TO_PTR (Address)); if (!TableHeader) { return (AE_NO_MEMORY); } AcpiTbInitTableDescriptor (TableDesc, Address, Flags, TableHeader); return (AE_OK); default: break; } /* Table is not valid yet */ return (AE_NO_MEMORY); } /******************************************************************************* * * FUNCTION: AcpiTbReleaseTempTable * * PARAMETERS: TableDesc - Table descriptor to be released * * RETURN: Status * * DESCRIPTION: The inverse of AcpiTbAcquireTempTable(). * *****************************************************************************/ void AcpiTbReleaseTempTable ( ACPI_TABLE_DESC *TableDesc) { /* * Note that the .Address is maintained by the callers of * AcpiTbAcquireTempTable(), thus do not invoke AcpiTbUninstallTable() * where .Address will be freed. */ AcpiTbInvalidateTable (TableDesc); } /****************************************************************************** * * FUNCTION: AcpiTbValidateTable * * PARAMETERS: TableDesc - Table descriptor * * RETURN: Status * * DESCRIPTION: This function is called to validate the table, the returned * table descriptor is in "VALIDATED" state. * *****************************************************************************/ ACPI_STATUS AcpiTbValidateTable ( ACPI_TABLE_DESC *TableDesc) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (TbValidateTable); /* Validate the table if necessary */ if (!TableDesc->Pointer) { Status = AcpiTbAcquireTable (TableDesc, &TableDesc->Pointer, &TableDesc->Length, &TableDesc->Flags); if (!TableDesc->Pointer) { Status = AE_NO_MEMORY; } } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbInvalidateTable * * PARAMETERS: TableDesc - Table descriptor * * RETURN: None * * DESCRIPTION: Invalidate one internal ACPI table, this is the inverse of * AcpiTbValidateTable(). * ******************************************************************************/ void AcpiTbInvalidateTable ( ACPI_TABLE_DESC *TableDesc) { ACPI_FUNCTION_TRACE (TbInvalidateTable); /* Table must be validated */ if (!TableDesc->Pointer) { return_VOID; } AcpiTbReleaseTable (TableDesc->Pointer, TableDesc->Length, TableDesc->Flags); TableDesc->Pointer = NULL; return_VOID; } /****************************************************************************** * * FUNCTION: AcpiTbValidateTempTable * * PARAMETERS: TableDesc - Table descriptor * * RETURN: Status * * DESCRIPTION: This function is called to validate the table, the returned * table descriptor is in "VALIDATED" state. * *****************************************************************************/ ACPI_STATUS AcpiTbValidateTempTable ( ACPI_TABLE_DESC *TableDesc) { if (!TableDesc->Pointer && !AcpiGbl_EnableTableValidation) { /* * Only validates the header of the table. * Note that Length contains the size of the mapping after invoking * this work around, this value is required by * AcpiTbReleaseTempTable(). * We can do this because in AcpiInitTableDescriptor(), the Length * field of the installed descriptor is filled with the actual * table length obtaining from the table header. */ TableDesc->Length = sizeof (ACPI_TABLE_HEADER); } return (AcpiTbValidateTable (TableDesc)); } /******************************************************************************* * * FUNCTION: AcpiTbCheckDuplication * * PARAMETERS: TableDesc - Table descriptor * TableIndex - Where the table index is returned * * RETURN: Status * * DESCRIPTION: Avoid installing duplicated tables. However table override and * user aided dynamic table load is allowed, thus comparing the * address of the table is not sufficient, and checking the entire * table content is required. * ******************************************************************************/ static ACPI_STATUS AcpiTbCheckDuplication ( ACPI_TABLE_DESC *TableDesc, UINT32 *TableIndex) { UINT32 i; ACPI_FUNCTION_TRACE (TbCheckDuplication); /* Check if table is already registered */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { /* Do not compare with unverified tables */ if (!(AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_VERIFIED)) { continue; } /* * Check for a table match on the entire table length, * not just the header. */ if (!AcpiTbCompareTables (TableDesc, i)) { continue; } /* * Note: the current mechanism does not unregister a table if it is * dynamically unloaded. The related namespace entries are deleted, * but the table remains in the root table list. * * The assumption here is that the number of different tables that * will be loaded is actually small, and there is minimal overhead * in just keeping the table in case it is needed again. * * If this assumption changes in the future (perhaps on large * machines with many table load/unload operations), tables will * need to be unregistered when they are unloaded, and slots in the * root table list should be reused when empty. */ if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED) { /* Table is still loaded, this is an error */ return_ACPI_STATUS (AE_ALREADY_EXISTS); } else { *TableIndex = i; return_ACPI_STATUS (AE_CTRL_TERMINATE); } } /* Indicate no duplication to the caller */ return_ACPI_STATUS (AE_OK); } /****************************************************************************** * * FUNCTION: AcpiTbVerifyTempTable * * PARAMETERS: TableDesc - Table descriptor * Signature - Table signature to verify * TableIndex - Where the table index is returned * * RETURN: Status * * DESCRIPTION: This function is called to validate and verify the table, the * returned table descriptor is in "VALIDATED" state. * Note that 'TableIndex' is required to be set to !NULL to * enable duplication check. * *****************************************************************************/ ACPI_STATUS AcpiTbVerifyTempTable ( ACPI_TABLE_DESC *TableDesc, char *Signature, UINT32 *TableIndex) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (TbVerifyTempTable); /* Validate the table */ Status = AcpiTbValidateTempTable (TableDesc); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (AE_NO_MEMORY); } /* If a particular signature is expected (DSDT/FACS), it must match */ if (Signature && !ACPI_COMPARE_NAMESEG (&TableDesc->Signature, Signature)) { ACPI_BIOS_ERROR ((AE_INFO, "Invalid signature 0x%X for ACPI table, expected [%s]", TableDesc->Signature.Integer, Signature)); Status = AE_BAD_SIGNATURE; goto InvalidateAndExit; } if (AcpiGbl_EnableTableValidation) { /* Verify the checksum */ Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY, "%4.4s 0x%8.8X%8.8X" " Attempted table install failed", AcpiUtValidNameseg (TableDesc->Signature.Ascii) ? TableDesc->Signature.Ascii : "????", ACPI_FORMAT_UINT64 (TableDesc->Address))); goto InvalidateAndExit; } /* Avoid duplications */ if (TableIndex) { Status = AcpiTbCheckDuplication (TableDesc, TableIndex); if (ACPI_FAILURE (Status)) { if (Status != AE_CTRL_TERMINATE) { ACPI_EXCEPTION ((AE_INFO, Status, "%4.4s 0x%8.8X%8.8X" " Table is already loaded", AcpiUtValidNameseg (TableDesc->Signature.Ascii) ? TableDesc->Signature.Ascii : "????", ACPI_FORMAT_UINT64 (TableDesc->Address))); } goto InvalidateAndExit; } } TableDesc->Flags |= ACPI_TABLE_IS_VERIFIED; } return_ACPI_STATUS (Status); InvalidateAndExit: AcpiTbInvalidateTable (TableDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbResizeRootTableList * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Expand the size of global table array * ******************************************************************************/ ACPI_STATUS AcpiTbResizeRootTableList ( void) { ACPI_TABLE_DESC *Tables; UINT32 TableCount; UINT32 CurrentTableCount, MaxTableCount; UINT32 i; ACPI_FUNCTION_TRACE (TbResizeRootTableList); /* AllowResize flag is a parameter to AcpiInitializeTables */ if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE)) { ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed")); return_ACPI_STATUS (AE_SUPPORT); } /* Increase the Table Array size */ if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) { TableCount = AcpiGbl_RootTableList.MaxTableCount; } else { TableCount = AcpiGbl_RootTableList.CurrentTableCount; } MaxTableCount = TableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT; Tables = ACPI_ALLOCATE_ZEROED ( ((ACPI_SIZE) MaxTableCount) * sizeof (ACPI_TABLE_DESC)); if (!Tables) { ACPI_ERROR ((AE_INFO, "Could not allocate new root table array")); return_ACPI_STATUS (AE_NO_MEMORY); } /* Copy and free the previous table array */ CurrentTableCount = 0; if (AcpiGbl_RootTableList.Tables) { for (i = 0; i < TableCount; i++) { if (AcpiGbl_RootTableList.Tables[i].Address) { memcpy (Tables + CurrentTableCount, AcpiGbl_RootTableList.Tables + i, sizeof (ACPI_TABLE_DESC)); CurrentTableCount++; } } if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) { ACPI_FREE (AcpiGbl_RootTableList.Tables); } } AcpiGbl_RootTableList.Tables = Tables; AcpiGbl_RootTableList.MaxTableCount = MaxTableCount; AcpiGbl_RootTableList.CurrentTableCount = CurrentTableCount; AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ORIGIN_ALLOCATED; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiTbGetNextTableDescriptor * * PARAMETERS: TableIndex - Where table index is returned * TableDesc - Where table descriptor is returned * * RETURN: Status and table index/descriptor. * * DESCRIPTION: Allocate a new ACPI table entry to the global table list * ******************************************************************************/ ACPI_STATUS AcpiTbGetNextTableDescriptor ( UINT32 *TableIndex, ACPI_TABLE_DESC **TableDesc) { ACPI_STATUS Status; UINT32 i; /* Ensure that there is room for the table in the Root Table List */ if (AcpiGbl_RootTableList.CurrentTableCount >= AcpiGbl_RootTableList.MaxTableCount) { Status = AcpiTbResizeRootTableList(); if (ACPI_FAILURE (Status)) { return (Status); } } i = AcpiGbl_RootTableList.CurrentTableCount; AcpiGbl_RootTableList.CurrentTableCount++; if (TableIndex) { *TableIndex = i; } if (TableDesc) { *TableDesc = &AcpiGbl_RootTableList.Tables[i]; } return (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiTbTerminate * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Delete all internal ACPI tables * ******************************************************************************/ void AcpiTbTerminate ( void) { UINT32 i; ACPI_FUNCTION_TRACE (TbTerminate); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* Delete the individual tables */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) { AcpiTbUninstallTable (&AcpiGbl_RootTableList.Tables[i]); } /* * Delete the root table array if allocated locally. Array cannot be * mapped, so we don't need to check for that flag. */ if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) { ACPI_FREE (AcpiGbl_RootTableList.Tables); } AcpiGbl_RootTableList.Tables = NULL; AcpiGbl_RootTableList.Flags = 0; AcpiGbl_RootTableList.CurrentTableCount = 0; ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n")); (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_VOID; } /******************************************************************************* * * FUNCTION: AcpiTbDeleteNamespaceByOwner * * PARAMETERS: TableIndex - Table index * * RETURN: Status * * DESCRIPTION: Delete all namespace objects created when this table was loaded. * ******************************************************************************/ ACPI_STATUS AcpiTbDeleteNamespaceByOwner ( UINT32 TableIndex) { ACPI_OWNER_ID OwnerId; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner); Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount) { /* The table index does not exist */ (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (AE_NOT_EXIST); } /* Get the owner ID for this table, used to delete namespace nodes */ OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId; (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); /* * Need to acquire the namespace writer lock to prevent interference * with any concurrent namespace walks. The interpreter must be * released during the deletion since the acquisition of the deletion * lock may block, and also since the execution of a namespace walk * must be allowed to use the interpreter. */ Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } AcpiNsDeleteNamespaceByOwner (OwnerId); AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbAllocateOwnerId * * PARAMETERS: TableIndex - Table index * * RETURN: Status * * DESCRIPTION: Allocates OwnerId in TableDesc * ******************************************************************************/ ACPI_STATUS AcpiTbAllocateOwnerId ( UINT32 TableIndex) { ACPI_STATUS Status = AE_BAD_PARAMETER; ACPI_FUNCTION_TRACE (TbAllocateOwnerId); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) { Status = AcpiUtAllocateOwnerId ( &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId)); } (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbReleaseOwnerId * * PARAMETERS: TableIndex - Table index * * RETURN: Status * * DESCRIPTION: Releases OwnerId in TableDesc * ******************************************************************************/ ACPI_STATUS AcpiTbReleaseOwnerId ( UINT32 TableIndex) { ACPI_STATUS Status = AE_BAD_PARAMETER; ACPI_FUNCTION_TRACE (TbReleaseOwnerId); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) { AcpiUtReleaseOwnerId ( &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId)); Status = AE_OK; } (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbGetOwnerId * * PARAMETERS: TableIndex - Table index * OwnerId - Where the table OwnerId is returned * * RETURN: Status * * DESCRIPTION: returns OwnerId for the ACPI table * ******************************************************************************/ ACPI_STATUS AcpiTbGetOwnerId ( UINT32 TableIndex, ACPI_OWNER_ID *OwnerId) { ACPI_STATUS Status = AE_BAD_PARAMETER; ACPI_FUNCTION_TRACE (TbGetOwnerId); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) { *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId; Status = AE_OK; } (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbIsTableLoaded * * PARAMETERS: TableIndex - Index into the root table * * RETURN: Table Loaded Flag * ******************************************************************************/ BOOLEAN AcpiTbIsTableLoaded ( UINT32 TableIndex) { BOOLEAN IsLoaded = FALSE; (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) { IsLoaded = (BOOLEAN) (AcpiGbl_RootTableList.Tables[TableIndex].Flags & ACPI_TABLE_IS_LOADED); } (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return (IsLoaded); } /******************************************************************************* * * FUNCTION: AcpiTbSetTableLoadedFlag * * PARAMETERS: TableIndex - Table index * IsLoaded - TRUE if table is loaded, FALSE otherwise * * RETURN: None * * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. * ******************************************************************************/ void AcpiTbSetTableLoadedFlag ( UINT32 TableIndex, BOOLEAN IsLoaded) { (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount) { if (IsLoaded) { AcpiGbl_RootTableList.Tables[TableIndex].Flags |= ACPI_TABLE_IS_LOADED; } else { AcpiGbl_RootTableList.Tables[TableIndex].Flags &= ~ACPI_TABLE_IS_LOADED; } } (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); } /******************************************************************************* * * FUNCTION: AcpiTbLoadTable * * PARAMETERS: TableIndex - Table index * ParentNode - Where table index is returned * * RETURN: Status * * DESCRIPTION: Load an ACPI table * ******************************************************************************/ ACPI_STATUS AcpiTbLoadTable ( UINT32 TableIndex, ACPI_NAMESPACE_NODE *ParentNode) { ACPI_TABLE_HEADER *Table; ACPI_STATUS Status; ACPI_OWNER_ID OwnerId; ACPI_FUNCTION_TRACE (TbLoadTable); /* * Note: Now table is "INSTALLED", it must be validated before * using. */ Status = AcpiGetTableByIndex (TableIndex, &Table); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiNsLoadTable (TableIndex, ParentNode); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * Update GPEs for any new _Lxx/_Exx methods. Ignore errors. The host is * responsible for discovering any new wake GPEs by running _PRW methods * that may have been loaded by this table. */ Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); if (ACPI_SUCCESS (Status)) { AcpiEvUpdateGpes (OwnerId); } /* Invoke table handler */ AcpiTbNotifyTable (ACPI_TABLE_EVENT_LOAD, Table); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbInstallAndLoadTable * * PARAMETERS: Address - Physical address of the table * Flags - Allocation flags of the table * Override - Whether override should be performed * TableIndex - Where table index is returned * * RETURN: Status * * DESCRIPTION: Install and load an ACPI table * ******************************************************************************/ ACPI_STATUS AcpiTbInstallAndLoadTable ( ACPI_PHYSICAL_ADDRESS Address, UINT8 Flags, BOOLEAN Override, UINT32 *TableIndex) { ACPI_STATUS Status; UINT32 i; ACPI_FUNCTION_TRACE (TbInstallAndLoadTable); /* Install the table and load it into the namespace */ Status = AcpiTbInstallStandardTable (Address, Flags, TRUE, Override, &i); if (ACPI_FAILURE (Status)) { goto Exit; } Status = AcpiTbLoadTable (i, AcpiGbl_RootNode); Exit: *TableIndex = i; return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbUnloadTable * * PARAMETERS: TableIndex - Table index * * RETURN: Status * * DESCRIPTION: Unload an ACPI table * ******************************************************************************/ ACPI_STATUS AcpiTbUnloadTable ( UINT32 TableIndex) { ACPI_STATUS Status = AE_OK; ACPI_TABLE_HEADER *Table; ACPI_FUNCTION_TRACE (TbUnloadTable); /* Ensure the table is still loaded */ if (!AcpiTbIsTableLoaded (TableIndex)) { return_ACPI_STATUS (AE_NOT_EXIST); } /* Invoke table handler */ Status = AcpiGetTableByIndex (TableIndex, &Table); if (ACPI_SUCCESS (Status)) { AcpiTbNotifyTable (ACPI_TABLE_EVENT_UNLOAD, Table); } /* Delete the portion of the namespace owned by this table */ Status = AcpiTbDeleteNamespaceByOwner (TableIndex); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } (void) AcpiTbReleaseOwnerId (TableIndex); AcpiTbSetTableLoadedFlag (TableIndex, FALSE); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiTbNotifyTable * * PARAMETERS: Event - Table event * Table - Validated table pointer * * RETURN: None * * DESCRIPTION: Notify a table event to the users. * ******************************************************************************/ void AcpiTbNotifyTable ( UINT32 Event, void *Table) { /* Invoke table handler if present */ if (AcpiGbl_TableHandler) { (void) AcpiGbl_TableHandler (Event, Table, AcpiGbl_TableHandlerContext); } }