diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/utilities/uteval.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/utilities/uteval.c | 370 |
1 files changed, 370 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/utilities/uteval.c b/sys/contrib/dev/acpica/components/utilities/uteval.c new file mode 100644 index 0000000..57dbec0 --- /dev/null +++ b/sys/contrib/dev/acpica/components/utilities/uteval.c @@ -0,0 +1,370 @@ +/****************************************************************************** + * + * Module Name: uteval - Object evaluation + * + *****************************************************************************/ + +/* + * 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 __UTEVAL_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/acnamesp.h> + + +#define _COMPONENT ACPI_UTILITIES + ACPI_MODULE_NAME ("uteval") + + +/******************************************************************************* + * + * FUNCTION: AcpiUtEvaluateObject + * + * PARAMETERS: PrefixNode - Starting node + * Path - Path to object from starting node + * ExpectedReturnTypes - Bitmap of allowed return types + * ReturnDesc - Where a return value is stored + * + * RETURN: Status + * + * DESCRIPTION: Evaluates a namespace object and verifies the type of the + * return object. Common code that simplifies accessing objects + * that have required return objects of fixed types. + * + * NOTE: Internal function, no parameter validation + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtEvaluateObject ( + ACPI_NAMESPACE_NODE *PrefixNode, + char *Path, + UINT32 ExpectedReturnBtypes, + ACPI_OPERAND_OBJECT **ReturnDesc) +{ + ACPI_EVALUATE_INFO *Info; + ACPI_STATUS Status; + UINT32 ReturnBtype; + + + ACPI_FUNCTION_TRACE (UtEvaluateObject); + + + /* Allocate the evaluation information block */ + + Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); + if (!Info) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + Info->PrefixNode = PrefixNode; + Info->Pathname = Path; + + /* Evaluate the object/method */ + + Status = AcpiNsEvaluate (Info); + if (ACPI_FAILURE (Status)) + { + if (Status == AE_NOT_FOUND) + { + ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s.%s] was not found\n", + AcpiUtGetNodeName (PrefixNode), Path)); + } + else + { + ACPI_ERROR_METHOD ("Method execution failed", + PrefixNode, Path, Status); + } + + goto Cleanup; + } + + /* Did we get a return object? */ + + if (!Info->ReturnObject) + { + if (ExpectedReturnBtypes) + { + ACPI_ERROR_METHOD ("No object was returned from", + PrefixNode, Path, AE_NOT_EXIST); + + Status = AE_NOT_EXIST; + } + + goto Cleanup; + } + + /* Map the return object type to the bitmapped type */ + + switch ((Info->ReturnObject)->Common.Type) + { + case ACPI_TYPE_INTEGER: + ReturnBtype = ACPI_BTYPE_INTEGER; + break; + + case ACPI_TYPE_BUFFER: + ReturnBtype = ACPI_BTYPE_BUFFER; + break; + + case ACPI_TYPE_STRING: + ReturnBtype = ACPI_BTYPE_STRING; + break; + + case ACPI_TYPE_PACKAGE: + ReturnBtype = ACPI_BTYPE_PACKAGE; + break; + + default: + ReturnBtype = 0; + break; + } + + if ((AcpiGbl_EnableInterpreterSlack) && + (!ExpectedReturnBtypes)) + { + /* + * We received a return object, but one was not expected. This can + * happen frequently if the "implicit return" feature is enabled. + * Just delete the return object and return AE_OK. + */ + AcpiUtRemoveReference (Info->ReturnObject); + goto Cleanup; + } + + /* Is the return object one of the expected types? */ + + if (!(ExpectedReturnBtypes & ReturnBtype)) + { + ACPI_ERROR_METHOD ("Return object type is incorrect", + PrefixNode, Path, AE_TYPE); + + ACPI_ERROR ((AE_INFO, + "Type returned from %s was incorrect: %s, expected Btypes: 0x%X", + Path, AcpiUtGetObjectTypeName (Info->ReturnObject), + ExpectedReturnBtypes)); + + /* On error exit, we must delete the return object */ + + AcpiUtRemoveReference (Info->ReturnObject); + Status = AE_TYPE; + goto Cleanup; + } + + /* Object type is OK, return it */ + + *ReturnDesc = Info->ReturnObject; + +Cleanup: + ACPI_FREE (Info); + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtEvaluateNumericObject + * + * PARAMETERS: ObjectName - Object name to be evaluated + * DeviceNode - Node for the device + * Value - Where the value is returned + * + * RETURN: Status + * + * DESCRIPTION: Evaluates a numeric namespace object for a selected device + * and stores result in *Value. + * + * NOTE: Internal function, no parameter validation + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtEvaluateNumericObject ( + char *ObjectName, + ACPI_NAMESPACE_NODE *DeviceNode, + UINT64 *Value) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (UtEvaluateNumericObject); + + + Status = AcpiUtEvaluateObject (DeviceNode, ObjectName, + ACPI_BTYPE_INTEGER, &ObjDesc); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Get the returned Integer */ + + *Value = ObjDesc->Integer.Value; + + /* On exit, we must delete the return object */ + + AcpiUtRemoveReference (ObjDesc); + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtExecute_STA + * + * PARAMETERS: DeviceNode - Node for the device + * Flags - Where the status flags are returned + * + * RETURN: Status + * + * DESCRIPTION: Executes _STA for selected device and stores results in + * *Flags. + * + * NOTE: Internal function, no parameter validation + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtExecute_STA ( + ACPI_NAMESPACE_NODE *DeviceNode, + UINT32 *Flags) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (UtExecute_STA); + + + Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__STA, + ACPI_BTYPE_INTEGER, &ObjDesc); + if (ACPI_FAILURE (Status)) + { + if (AE_NOT_FOUND == Status) + { + ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, + "_STA on %4.4s was not found, assuming device is present\n", + AcpiUtGetNodeName (DeviceNode))); + + *Flags = ACPI_UINT32_MAX; + Status = AE_OK; + } + + return_ACPI_STATUS (Status); + } + + /* Extract the status flags */ + + *Flags = (UINT32) ObjDesc->Integer.Value; + + /* On exit, we must delete the return object */ + + AcpiUtRemoveReference (ObjDesc); + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtExecutePowerMethods + * + * PARAMETERS: DeviceNode - Node for the device + * MethodNames - Array of power method names + * MethodCount - Number of methods to execute + * OutValues - Where the power method values are returned + * + * RETURN: Status, OutValues + * + * DESCRIPTION: Executes the specified power methods for the device and returns + * the result(s). + * + * NOTE: Internal function, no parameter validation + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtExecutePowerMethods ( + ACPI_NAMESPACE_NODE *DeviceNode, + const char **MethodNames, + UINT8 MethodCount, + UINT8 *OutValues) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_STATUS Status; + ACPI_STATUS FinalStatus = AE_NOT_FOUND; + UINT32 i; + + + ACPI_FUNCTION_TRACE (UtExecutePowerMethods); + + + for (i = 0; i < MethodCount; i++) + { + /* + * Execute the power method (_SxD or _SxW). The only allowable + * return type is an Integer. + */ + Status = AcpiUtEvaluateObject (DeviceNode, + ACPI_CAST_PTR (char, MethodNames[i]), + ACPI_BTYPE_INTEGER, &ObjDesc); + if (ACPI_SUCCESS (Status)) + { + OutValues[i] = (UINT8) ObjDesc->Integer.Value; + + /* Delete the return object */ + + AcpiUtRemoveReference (ObjDesc); + FinalStatus = AE_OK; /* At least one value is valid */ + continue; + } + + OutValues[i] = ACPI_UINT8_MAX; + if (Status == AE_NOT_FOUND) + { + continue; /* Ignore if not found */ + } + + ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Failed %s on Device %4.4s, %s\n", + ACPI_CAST_PTR (char, MethodNames[i]), + AcpiUtGetNodeName (DeviceNode), AcpiFormatException (Status))); + } + + return_ACPI_STATUS (FinalStatus); +} |
