diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/executer/exconfig.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/executer/exconfig.c | 688 |
1 files changed, 688 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/executer/exconfig.c b/sys/contrib/dev/acpica/components/executer/exconfig.c new file mode 100644 index 0000000..3bfe1ba --- /dev/null +++ b/sys/contrib/dev/acpica/components/executer/exconfig.c @@ -0,0 +1,688 @@ +/****************************************************************************** + * + * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes) + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, 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. + */ + +#define __EXCONFIG_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/acinterp.h> +#include <contrib/dev/acpica/include/acnamesp.h> +#include <contrib/dev/acpica/include/actables.h> +#include <contrib/dev/acpica/include/acdispat.h> +#include <contrib/dev/acpica/include/acevents.h> + + +#define _COMPONENT ACPI_EXECUTER + ACPI_MODULE_NAME ("exconfig") + +/* Local prototypes */ + +static ACPI_STATUS +AcpiExAddTable ( + UINT32 TableIndex, + ACPI_NAMESPACE_NODE *ParentNode, + ACPI_OPERAND_OBJECT **DdbHandle); + +static ACPI_STATUS +AcpiExRegionRead ( + ACPI_OPERAND_OBJECT *ObjDesc, + UINT32 Length, + UINT8 *Buffer); + + +/******************************************************************************* + * + * FUNCTION: AcpiExAddTable + * + * PARAMETERS: Table - Pointer to raw table + * ParentNode - Where to load the table (scope) + * DdbHandle - Where to return the table handle. + * + * RETURN: Status + * + * DESCRIPTION: Common function to Install and Load an ACPI table with a + * returned table handle. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiExAddTable ( + UINT32 TableIndex, + ACPI_NAMESPACE_NODE *ParentNode, + ACPI_OPERAND_OBJECT **DdbHandle) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_STATUS Status; + ACPI_OWNER_ID OwnerId; + + + ACPI_FUNCTION_TRACE (ExAddTable); + + + /* Create an object to be the table handle */ + + ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE); + if (!ObjDesc) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Init the table handle */ + + ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID; + ObjDesc->Reference.Class = ACPI_REFCLASS_TABLE; + *DdbHandle = ObjDesc; + + /* Install the new table into the local data structures */ + + ObjDesc->Reference.Value = TableIndex; + + /* Add the table to the namespace */ + + Status = AcpiNsLoadTable (TableIndex, ParentNode); + if (ACPI_FAILURE (Status)) + { + AcpiUtRemoveReference (ObjDesc); + *DdbHandle = NULL; + return_ACPI_STATUS (Status); + } + + /* Execute any module-level code that was found in the table */ + + AcpiExExitInterpreter (); + AcpiNsExecModuleCodeList (); + AcpiExEnterInterpreter (); + + /* + * 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); + } + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExLoadTableOp + * + * PARAMETERS: WalkState - Current state with operands + * ReturnDesc - Where to store the return object + * + * RETURN: Status + * + * DESCRIPTION: Load an ACPI table from the RSDT/XSDT + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExLoadTableOp ( + ACPI_WALK_STATE *WalkState, + ACPI_OPERAND_OBJECT **ReturnDesc) +{ + ACPI_STATUS Status; + ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; + ACPI_NAMESPACE_NODE *ParentNode; + ACPI_NAMESPACE_NODE *StartNode; + ACPI_NAMESPACE_NODE *ParameterNode = NULL; + ACPI_OPERAND_OBJECT *DdbHandle; + ACPI_TABLE_HEADER *Table; + UINT32 TableIndex; + + + ACPI_FUNCTION_TRACE (ExLoadTableOp); + + + /* Validate lengths for the SignatureString, OEMIDString, OEMTableID */ + + if ((Operand[0]->String.Length > ACPI_NAME_SIZE) || + (Operand[1]->String.Length > ACPI_OEM_ID_SIZE) || + (Operand[2]->String.Length > ACPI_OEM_TABLE_ID_SIZE)) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + /* Find the ACPI table in the RSDT/XSDT */ + + Status = AcpiTbFindTable (Operand[0]->String.Pointer, + Operand[1]->String.Pointer, + Operand[2]->String.Pointer, &TableIndex); + if (ACPI_FAILURE (Status)) + { + if (Status != AE_NOT_FOUND) + { + return_ACPI_STATUS (Status); + } + + /* Table not found, return an Integer=0 and AE_OK */ + + DdbHandle = AcpiUtCreateIntegerObject ((UINT64) 0); + if (!DdbHandle) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + *ReturnDesc = DdbHandle; + return_ACPI_STATUS (AE_OK); + } + + /* Default nodes */ + + StartNode = WalkState->ScopeInfo->Scope.Node; + ParentNode = AcpiGbl_RootNode; + + /* RootPath (optional parameter) */ + + if (Operand[3]->String.Length > 0) + { + /* + * Find the node referenced by the RootPathString. This is the + * location within the namespace where the table will be loaded. + */ + Status = AcpiNsGetNode (StartNode, Operand[3]->String.Pointer, + ACPI_NS_SEARCH_PARENT, &ParentNode); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + + /* ParameterPath (optional parameter) */ + + if (Operand[4]->String.Length > 0) + { + if ((Operand[4]->String.Pointer[0] != '\\') && + (Operand[4]->String.Pointer[0] != '^')) + { + /* + * Path is not absolute, so it will be relative to the node + * referenced by the RootPathString (or the NS root if omitted) + */ + StartNode = ParentNode; + } + + /* Find the node referenced by the ParameterPathString */ + + Status = AcpiNsGetNode (StartNode, Operand[4]->String.Pointer, + ACPI_NS_SEARCH_PARENT, &ParameterNode); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + + /* Load the table into the namespace */ + + Status = AcpiExAddTable (TableIndex, ParentNode, &DdbHandle); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Parameter Data (optional) */ + + if (ParameterNode) + { + /* Store the parameter data into the optional parameter object */ + + Status = AcpiExStore (Operand[5], + ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode), + WalkState); + if (ACPI_FAILURE (Status)) + { + (void) AcpiExUnloadTable (DdbHandle); + + AcpiUtRemoveReference (DdbHandle); + return_ACPI_STATUS (Status); + } + } + + Status = AcpiGetTableByIndex (TableIndex, &Table); + if (ACPI_SUCCESS (Status)) + { + ACPI_INFO ((AE_INFO, "Dynamic OEM Table Load:")); + AcpiTbPrintTableHeader (0, Table); + } + + /* Invoke table handler if present */ + + if (AcpiGbl_TableHandler) + { + (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, Table, + AcpiGbl_TableHandlerContext); + } + + *ReturnDesc = DdbHandle; + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExRegionRead + * + * PARAMETERS: ObjDesc - Region descriptor + * Length - Number of bytes to read + * Buffer - Pointer to where to put the data + * + * RETURN: Status + * + * DESCRIPTION: Read data from an operation region. The read starts from the + * beginning of the region. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiExRegionRead ( + ACPI_OPERAND_OBJECT *ObjDesc, + UINT32 Length, + UINT8 *Buffer) +{ + ACPI_STATUS Status; + UINT64 Value; + UINT32 RegionOffset = 0; + UINT32 i; + + + /* Bytewise reads */ + + for (i = 0; i < Length; i++) + { + Status = AcpiEvAddressSpaceDispatch (ObjDesc, NULL, ACPI_READ, + RegionOffset, 8, &Value); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + + *Buffer = (UINT8) Value; + Buffer++; + RegionOffset++; + } + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExLoadOp + * + * PARAMETERS: ObjDesc - Region or Buffer/Field where the table will be + * obtained + * Target - Where a handle to the table will be stored + * WalkState - Current state + * + * RETURN: Status + * + * DESCRIPTION: Load an ACPI table from a field or operation region + * + * NOTE: Region Fields (Field, BankField, IndexFields) are resolved to buffer + * objects before this code is reached. + * + * If source is an operation region, it must refer to SystemMemory, as + * per the ACPI specification. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExLoadOp ( + ACPI_OPERAND_OBJECT *ObjDesc, + ACPI_OPERAND_OBJECT *Target, + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT *DdbHandle; + ACPI_TABLE_HEADER *Table; + ACPI_TABLE_DESC TableDesc; + UINT32 TableIndex; + ACPI_STATUS Status; + UINT32 Length; + + + ACPI_FUNCTION_TRACE (ExLoadOp); + + + ACPI_MEMSET (&TableDesc, 0, sizeof (ACPI_TABLE_DESC)); + + /* Source Object can be either an OpRegion or a Buffer/Field */ + + switch (ObjDesc->Common.Type) + { + case ACPI_TYPE_REGION: + + ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, + "Load table from Region %p\n", ObjDesc)); + + /* Region must be SystemMemory (from ACPI spec) */ + + if (ObjDesc->Region.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) + { + return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + } + + /* + * If the Region Address and Length have not been previously evaluated, + * evaluate them now and save the results. + */ + if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)) + { + Status = AcpiDsGetRegionArguments (ObjDesc); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + + /* Get the table header first so we can get the table length */ + + Table = ACPI_ALLOCATE (sizeof (ACPI_TABLE_HEADER)); + if (!Table) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + Status = AcpiExRegionRead (ObjDesc, sizeof (ACPI_TABLE_HEADER), + ACPI_CAST_PTR (UINT8, Table)); + Length = Table->Length; + ACPI_FREE (Table); + + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Must have at least an ACPI table header */ + + if (Length < sizeof (ACPI_TABLE_HEADER)) + { + return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); + } + + /* + * The original implementation simply mapped the table, with no copy. + * However, the memory region is not guaranteed to remain stable and + * we must copy the table to a local buffer. For example, the memory + * region is corrupted after suspend on some machines. Dynamically + * loaded tables are usually small, so this overhead is minimal. + * + * The latest implementation (5/2009) does not use a mapping at all. + * We use the low-level operation region interface to read the table + * instead of the obvious optimization of using a direct mapping. + * This maintains a consistent use of operation regions across the + * entire subsystem. This is important if additional processing must + * be performed in the (possibly user-installed) operation region + * handler. For example, AcpiExec and ASLTS depend on this. + */ + + /* Allocate a buffer for the table */ + + TableDesc.Pointer = ACPI_ALLOCATE (Length); + if (!TableDesc.Pointer) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Read the entire table */ + + Status = AcpiExRegionRead (ObjDesc, Length, + ACPI_CAST_PTR (UINT8, TableDesc.Pointer)); + if (ACPI_FAILURE (Status)) + { + ACPI_FREE (TableDesc.Pointer); + return_ACPI_STATUS (Status); + } + + TableDesc.Address = ObjDesc->Region.Address; + break; + + + case ACPI_TYPE_BUFFER: /* Buffer or resolved RegionField */ + + ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, + "Load table from Buffer or Field %p\n", ObjDesc)); + + /* Must have at least an ACPI table header */ + + if (ObjDesc->Buffer.Length < sizeof (ACPI_TABLE_HEADER)) + { + return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); + } + + /* Get the actual table length from the table header */ + + Table = ACPI_CAST_PTR (ACPI_TABLE_HEADER, ObjDesc->Buffer.Pointer); + Length = Table->Length; + + /* Table cannot extend beyond the buffer */ + + if (Length > ObjDesc->Buffer.Length) + { + return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); + } + if (Length < sizeof (ACPI_TABLE_HEADER)) + { + return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); + } + + /* + * Copy the table from the buffer because the buffer could be modified + * or even deleted in the future + */ + TableDesc.Pointer = ACPI_ALLOCATE (Length); + if (!TableDesc.Pointer) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + ACPI_MEMCPY (TableDesc.Pointer, Table, Length); + TableDesc.Address = ACPI_TO_INTEGER (TableDesc.Pointer); + break; + + + default: + return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + } + + /* Validate table checksum (will not get validated in TbAddTable) */ + + Status = AcpiTbVerifyChecksum (TableDesc.Pointer, Length); + if (ACPI_FAILURE (Status)) + { + ACPI_FREE (TableDesc.Pointer); + return_ACPI_STATUS (Status); + } + + /* Complete the table descriptor */ + + TableDesc.Length = Length; + TableDesc.Flags = ACPI_TABLE_ORIGIN_ALLOCATED; + + /* Install the new table into the local data structures */ + + Status = AcpiTbAddTable (&TableDesc, &TableIndex); + if (ACPI_FAILURE (Status)) + { + /* Delete allocated table buffer */ + + AcpiTbDeleteTable (&TableDesc); + return_ACPI_STATUS (Status); + } + + /* + * Add the table to the namespace. + * + * Note: Load the table objects relative to the root of the namespace. + * This appears to go against the ACPI specification, but we do it for + * compatibility with other ACPI implementations. + */ + Status = AcpiExAddTable (TableIndex, AcpiGbl_RootNode, &DdbHandle); + if (ACPI_FAILURE (Status)) + { + /* On error, TablePtr was deallocated above */ + + return_ACPI_STATUS (Status); + } + + /* Store the DdbHandle into the Target operand */ + + Status = AcpiExStore (DdbHandle, Target, WalkState); + if (ACPI_FAILURE (Status)) + { + (void) AcpiExUnloadTable (DdbHandle); + + /* TablePtr was deallocated above */ + + AcpiUtRemoveReference (DdbHandle); + return_ACPI_STATUS (Status); + } + + ACPI_INFO ((AE_INFO, "Dynamic OEM Table Load:")); + AcpiTbPrintTableHeader (0, TableDesc.Pointer); + + /* Remove the reference by added by AcpiExStore above */ + + AcpiUtRemoveReference (DdbHandle); + + /* Invoke table handler if present */ + + if (AcpiGbl_TableHandler) + { + (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, TableDesc.Pointer, + AcpiGbl_TableHandlerContext); + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExUnloadTable + * + * PARAMETERS: DdbHandle - Handle to a previously loaded table + * + * RETURN: Status + * + * DESCRIPTION: Unload an ACPI table + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExUnloadTable ( + ACPI_OPERAND_OBJECT *DdbHandle) +{ + ACPI_STATUS Status = AE_OK; + ACPI_OPERAND_OBJECT *TableDesc = DdbHandle; + UINT32 TableIndex; + ACPI_TABLE_HEADER *Table; + + + ACPI_FUNCTION_TRACE (ExUnloadTable); + + + /* + * Validate the handle + * Although the handle is partially validated in AcpiExReconfiguration() + * when it calls AcpiExResolveOperands(), the handle is more completely + * validated here. + * + * Handle must be a valid operand object of type reference. Also, the + * DdbHandle must still be marked valid (table has not been previously + * unloaded) + */ + if ((!DdbHandle) || + (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) || + (DdbHandle->Common.Type != ACPI_TYPE_LOCAL_REFERENCE) || + (!(DdbHandle->Common.Flags & AOPOBJ_DATA_VALID))) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + /* Get the table index from the DdbHandle */ + + TableIndex = TableDesc->Reference.Value; + + /* Ensure the table is still loaded */ + + if (!AcpiTbIsTableLoaded (TableIndex)) + { + return_ACPI_STATUS (AE_NOT_EXIST); + } + + /* Invoke table handler if present */ + + if (AcpiGbl_TableHandler) + { + Status = AcpiGetTableByIndex (TableIndex, &Table); + if (ACPI_SUCCESS (Status)) + { + (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_UNLOAD, Table, + AcpiGbl_TableHandlerContext); + } + } + + /* 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); + + /* + * Invalidate the handle. We do this because the handle may be stored + * in a named object and may not be actually deleted until much later. + */ + DdbHandle->Common.Flags &= ~AOPOBJ_DATA_VALID; + return_ACPI_STATUS (AE_OK); +} + |
