ACPI_STATUS AcpiDsGetRegionArguments ( ACPI_OPERAND_OBJECT *ObjDesc) { ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ExtraDesc; ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc); if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS (AE_OK); } ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); if (!ExtraDesc) { return_ACPI_STATUS (AE_NOT_EXIST); } /* Get the Region node */ Node = ObjDesc->Region.Node; ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname ( ACPI_TYPE_REGION, Node, NULL)); ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart)); /* Execute the argument AML */ Status = AcpiDsExecuteArguments (Node, ExtraDesc->Extra.ScopeNode, ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId, ObjDesc->Region.Address, ObjDesc->Region.Length, Node); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiDsEvalRegionOperands ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Op) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *OperandDesc; ACPI_NAMESPACE_NODE *Node; ACPI_PARSE_OBJECT *NextOp; ACPI_ADR_SPACE_TYPE SpaceId; ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op); /* * This is where we evaluate the address and length fields of the * OpRegion declaration */ Node = Op->Common.Node; /* NextOp points to the op that holds the SpaceID */ NextOp = Op->Common.Value.Arg; SpaceId = (ACPI_ADR_SPACE_TYPE) NextOp->Common.Value.Integer; /* NextOp points to address op */ NextOp = NextOp->Common.Next; /* Evaluate/create the address and length operands */ Status = AcpiDsCreateOperands (WalkState, NextOp); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Resolve the length and address operands to numbers */ Status = AcpiExResolveOperands ( Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { return_ACPI_STATUS (AE_NOT_EXIST); } /* * Get the length operand and save it * (at Top of stack) */ OperandDesc = WalkState->Operands[WalkState->NumOperands - 1]; ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value; AcpiUtRemoveReference (OperandDesc); /* A zero-length operation region is unusable. Just warn */ if (!ObjDesc->Region.Length && (SpaceId < ACPI_NUM_PREDEFINED_REGIONS)) { ACPI_WARNING ((AE_INFO, "Operation Region [%4.4s] has zero length (SpaceId %X)", Node->Name.Ascii, SpaceId)); } /* * Get the address and save it * (at top of stack - 1) */ OperandDesc = WalkState->Operands[WalkState->NumOperands - 2]; ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) OperandDesc->Integer.Value; AcpiUtRemoveReference (OperandDesc); ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n", ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address), ObjDesc->Region.Length)); Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId, ObjDesc->Region.Address, ObjDesc->Region.Length, Node); /* Now the address and length are valid for this opregion */ ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID; return_ACPI_STATUS (Status); }