diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/dispatcher/dswload.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/dispatcher/dswload.c | 565 |
1 files changed, 565 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/dispatcher/dswload.c b/sys/contrib/dev/acpica/components/dispatcher/dswload.c new file mode 100644 index 0000000..1cc8d4f --- /dev/null +++ b/sys/contrib/dev/acpica/components/dispatcher/dswload.c @@ -0,0 +1,565 @@ +/****************************************************************************** + * + * Module Name: dswload - Dispatcher first pass namespace load callbacks + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2013, 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 __DSWLOAD_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/acparser.h> +#include <contrib/dev/acpica/include/amlcode.h> +#include <contrib/dev/acpica/include/acdispat.h> +#include <contrib/dev/acpica/include/acinterp.h> +#include <contrib/dev/acpica/include/acnamesp.h> + +#ifdef ACPI_ASL_COMPILER +#include <contrib/dev/acpica/include/acdisasm.h> +#endif + +#define _COMPONENT ACPI_DISPATCHER + ACPI_MODULE_NAME ("dswload") + + +/******************************************************************************* + * + * FUNCTION: AcpiDsInitCallbacks + * + * PARAMETERS: WalkState - Current state of the parse tree walk + * PassNumber - 1, 2, or 3 + * + * RETURN: Status + * + * DESCRIPTION: Init walk state callbacks + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDsInitCallbacks ( + ACPI_WALK_STATE *WalkState, + UINT32 PassNumber) +{ + + switch (PassNumber) + { + case 1: + + WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | + ACPI_PARSE_DELETE_TREE; + WalkState->DescendingCallback = AcpiDsLoad1BeginOp; + WalkState->AscendingCallback = AcpiDsLoad1EndOp; + break; + + case 2: + + WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 | + ACPI_PARSE_DELETE_TREE; + WalkState->DescendingCallback = AcpiDsLoad2BeginOp; + WalkState->AscendingCallback = AcpiDsLoad2EndOp; + break; + + case 3: + +#ifndef ACPI_NO_METHOD_EXECUTION + WalkState->ParseFlags |= ACPI_PARSE_EXECUTE | + ACPI_PARSE_DELETE_TREE; + WalkState->DescendingCallback = AcpiDsExecBeginOp; + WalkState->AscendingCallback = AcpiDsExecEndOp; +#endif + break; + + default: + + return (AE_BAD_PARAMETER); + } + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsLoad1BeginOp + * + * PARAMETERS: WalkState - Current state of the parse tree walk + * OutOp - Where to return op if a new one is created + * + * RETURN: Status + * + * DESCRIPTION: Descending callback used during the loading of ACPI tables. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDsLoad1BeginOp ( + ACPI_WALK_STATE *WalkState, + ACPI_PARSE_OBJECT **OutOp) +{ + ACPI_PARSE_OBJECT *Op; + ACPI_NAMESPACE_NODE *Node; + ACPI_STATUS Status; + ACPI_OBJECT_TYPE ObjectType; + char *Path; + UINT32 Flags; + + + ACPI_FUNCTION_TRACE (DsLoad1BeginOp); + + + Op = WalkState->Op; + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); + + /* We are only interested in opcodes that have an associated name */ + + if (Op) + { + if (!(WalkState->OpInfo->Flags & AML_NAMED)) + { + *OutOp = Op; + return_ACPI_STATUS (AE_OK); + } + + /* Check if this object has already been installed in the namespace */ + + if (Op->Common.Node) + { + *OutOp = Op; + return_ACPI_STATUS (AE_OK); + } + } + + Path = AcpiPsGetNextNamestring (&WalkState->ParserState); + + /* Map the raw opcode into an internal object type */ + + ObjectType = WalkState->OpInfo->ObjectType; + + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, + "State=%p Op=%p [%s]\n", WalkState, Op, AcpiUtGetTypeName (ObjectType))); + + switch (WalkState->Opcode) + { + case AML_SCOPE_OP: + /* + * The target name of the Scope() operator must exist at this point so + * that we can actually open the scope to enter new names underneath it. + * Allow search-to-root for single namesegs. + */ + Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, + ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); +#ifdef ACPI_ASL_COMPILER + if (Status == AE_NOT_FOUND) + { + /* + * Table disassembly: + * Target of Scope() not found. Generate an External for it, and + * insert the name into the namespace. + */ + AcpiDmAddToExternalList (Op, Path, ACPI_TYPE_DEVICE, 0); + Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, + ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, + WalkState, &Node); + } +#endif + if (ACPI_FAILURE (Status)) + { + ACPI_ERROR_NAMESPACE (Path, Status); + return_ACPI_STATUS (Status); + } + + /* + * Check to make sure that the target is + * one of the opcodes that actually opens a scope + */ + switch (Node->Type) + { + case ACPI_TYPE_ANY: + case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ + case ACPI_TYPE_DEVICE: + case ACPI_TYPE_POWER: + case ACPI_TYPE_PROCESSOR: + case ACPI_TYPE_THERMAL: + + /* These are acceptable types */ + break; + + case ACPI_TYPE_INTEGER: + case ACPI_TYPE_STRING: + case ACPI_TYPE_BUFFER: + /* + * These types we will allow, but we will change the type. + * This enables some existing code of the form: + * + * Name (DEB, 0) + * Scope (DEB) { ... } + * + * Note: silently change the type here. On the second pass, + * we will report a warning + */ + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, + "Type override - [%4.4s] had invalid type (%s) " + "for Scope operator, changed to type ANY\n", + AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type))); + + Node->Type = ACPI_TYPE_ANY; + WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY; + break; + + case ACPI_TYPE_METHOD: + /* + * Allow scope change to root during execution of module-level + * code. Root is typed METHOD during this time. + */ + if ((Node == AcpiGbl_RootNode) && + (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) + { + break; + } + + /*lint -fallthrough */ + + default: + + /* All other types are an error */ + + ACPI_ERROR ((AE_INFO, + "Invalid type (%s) for target of " + "Scope operator [%4.4s] (Cannot override)", + AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node))); + + return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + } + break; + + default: + /* + * For all other named opcodes, we will enter the name into + * the namespace. + * + * Setup the search flags. + * Since we are entering a name into the namespace, we do not want to + * enable the search-to-root upsearch. + * + * There are only two conditions where it is acceptable that the name + * already exists: + * 1) the Scope() operator can reopen a scoping object that was + * previously defined (Scope, Method, Device, etc.) + * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer, + * BufferField, or Package), the name of the object is already + * in the namespace. + */ + if (WalkState->DeferredNode) + { + /* This name is already in the namespace, get the node */ + + Node = WalkState->DeferredNode; + Status = AE_OK; + break; + } + + /* + * If we are executing a method, do not create any namespace objects + * during the load phase, only during execution. + */ + if (WalkState->MethodNode) + { + Node = NULL; + Status = AE_OK; + break; + } + + Flags = ACPI_NS_NO_UPSEARCH; + if ((WalkState->Opcode != AML_SCOPE_OP) && + (!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP))) + { + Flags |= ACPI_NS_ERROR_IF_FOUND; + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n", + AcpiUtGetTypeName (ObjectType))); + } + else + { + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, + "[%s] Both Find or Create allowed\n", + AcpiUtGetTypeName (ObjectType))); + } + + /* + * Enter the named type into the internal namespace. We enter the name + * as we go downward in the parse tree. Any necessary subobjects that + * involve arguments to the opcode must be created as we go back up the + * parse tree later. + */ + Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, + ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node); + if (ACPI_FAILURE (Status)) + { + if (Status == AE_ALREADY_EXISTS) + { + /* The name already exists in this scope */ + + if (Node->Flags & ANOBJ_IS_EXTERNAL) + { + /* + * Allow one create on an object or segment that was + * previously declared External + */ + Node->Flags &= ~ANOBJ_IS_EXTERNAL; + Node->Type = (UINT8) ObjectType; + + /* Just retyped a node, probably will need to open a scope */ + + if (AcpiNsOpensScope (ObjectType)) + { + Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + + Status = AE_OK; + } + } + + if (ACPI_FAILURE (Status)) + { + ACPI_ERROR_NAMESPACE (Path, Status); + return_ACPI_STATUS (Status); + } + } + break; + } + + /* Common exit */ + + if (!Op) + { + /* Create a new op */ + + Op = AcpiPsAllocOp (WalkState->Opcode); + if (!Op) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + } + + /* Initialize the op */ + +#if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) + Op->Named.Path = ACPI_CAST_PTR (UINT8, Path); +#endif + + if (Node) + { + /* + * Put the Node in the "op" object that the parser uses, so we + * can get it again quickly when this scope is closed + */ + Op->Common.Node = Node; + Op->Named.Name = Node->Name.Integer; + } + + AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op); + *OutOp = Op; + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsLoad1EndOp + * + * PARAMETERS: WalkState - Current state of the parse tree walk + * + * RETURN: Status + * + * DESCRIPTION: Ascending callback used during the loading of the namespace, + * both control methods and everything else. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDsLoad1EndOp ( + ACPI_WALK_STATE *WalkState) +{ + ACPI_PARSE_OBJECT *Op; + ACPI_OBJECT_TYPE ObjectType; + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (DsLoad1EndOp); + + + Op = WalkState->Op; + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState)); + + /* We are only interested in opcodes that have an associated name */ + + if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD))) + { + return_ACPI_STATUS (AE_OK); + } + + /* Get the object type to determine if we should pop the scope */ + + ObjectType = WalkState->OpInfo->ObjectType; + +#ifndef ACPI_NO_METHOD_EXECUTION + if (WalkState->OpInfo->Flags & AML_FIELD) + { + /* + * If we are executing a method, do not create any namespace objects + * during the load phase, only during execution. + */ + if (!WalkState->MethodNode) + { + if (WalkState->Opcode == AML_FIELD_OP || + WalkState->Opcode == AML_BANK_FIELD_OP || + WalkState->Opcode == AML_INDEX_FIELD_OP) + { + Status = AcpiDsInitFieldObjects (Op, WalkState); + } + } + return_ACPI_STATUS (Status); + } + + /* + * If we are executing a method, do not create any namespace objects + * during the load phase, only during execution. + */ + if (!WalkState->MethodNode) + { + if (Op->Common.AmlOpcode == AML_REGION_OP) + { + Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, + (ACPI_ADR_SPACE_TYPE) ((Op->Common.Value.Arg)->Common.Value.Integer), + WalkState); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP) + { + Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length, + ACPI_ADR_SPACE_DATA_TABLE, WalkState); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + } +#endif + + if (Op->Common.AmlOpcode == AML_NAME_OP) + { + /* For Name opcode, get the object type from the argument */ + + if (Op->Common.Value.Arg) + { + ObjectType = (AcpiPsGetOpcodeInfo ( + (Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType; + + /* Set node type if we have a namespace node */ + + if (Op->Common.Node) + { + Op->Common.Node->Type = (UINT8) ObjectType; + } + } + } + + /* + * If we are executing a method, do not create any namespace objects + * during the load phase, only during execution. + */ + if (!WalkState->MethodNode) + { + if (Op->Common.AmlOpcode == AML_METHOD_OP) + { + /* + * MethodOp PkgLength NameString MethodFlags TermList + * + * Note: We must create the method node/object pair as soon as we + * see the method declaration. This allows later pass1 parsing + * of invocations of the method (need to know the number of + * arguments.) + */ + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, + "LOADING-Method: State=%p Op=%p NamedObj=%p\n", + WalkState, Op, Op->Named.Node)); + + if (!AcpiNsGetAttachedObject (Op->Named.Node)) + { + WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node); + WalkState->NumOperands = 1; + + Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); + if (ACPI_SUCCESS (Status)) + { + Status = AcpiExCreateMethod (Op->Named.Data, + Op->Named.Length, WalkState); + } + + WalkState->Operands[0] = NULL; + WalkState->NumOperands = 0; + + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + } + } + + /* Pop the scope stack (only if loading a table) */ + + if (!WalkState->MethodNode && + AcpiNsOpensScope (ObjectType)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n", + AcpiUtGetTypeName (ObjectType), Op)); + + Status = AcpiDsScopeStackPop (WalkState); + } + + return_ACPI_STATUS (Status); +} |
