diff options
author | jkim <jkim@FreeBSD.org> | 2012-02-16 22:59:29 +0000 |
---|---|---|
committer | jkim <jkim@FreeBSD.org> | 2012-02-16 22:59:29 +0000 |
commit | a561c762bacb78b14d2bf5fb20afc1566203f990 (patch) | |
tree | d4ae2db1980d2ec7b164b1a5658fd2ae62569456 /sys/contrib/dev/acpica/components/utilities/utids.c | |
parent | 2b86faa18cb89921d202e133fa6a1c39b63cfe16 (diff) | |
parent | a6dfe3119152f97e640cc135d963b9f7c95c84ef (diff) | |
download | FreeBSD-src-a561c762bacb78b14d2bf5fb20afc1566203f990.zip FreeBSD-src-a561c762bacb78b14d2bf5fb20afc1566203f990.tar.gz |
Merge ACPICA 20120215.
Diffstat (limited to 'sys/contrib/dev/acpica/components/utilities/utids.c')
-rw-r--r-- | sys/contrib/dev/acpica/components/utilities/utids.c | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/utilities/utids.c b/sys/contrib/dev/acpica/components/utilities/utids.c new file mode 100644 index 0000000..5d5c8d3 --- /dev/null +++ b/sys/contrib/dev/acpica/components/utilities/utids.c @@ -0,0 +1,380 @@ +/****************************************************************************** + * + * Module Name: utids - support for device IDs - HID, UID, CID + * + *****************************************************************************/ + +/* + * 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 __UTIDS_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/acinterp.h> + + +#define _COMPONENT ACPI_UTILITIES + ACPI_MODULE_NAME ("utids") + + +/******************************************************************************* + * + * FUNCTION: AcpiUtExecute_HID + * + * PARAMETERS: DeviceNode - Node for the device + * ReturnId - Where the string HID is returned + * + * RETURN: Status + * + * DESCRIPTION: Executes the _HID control method that returns the hardware + * ID of the device. The HID is either an 32-bit encoded EISAID + * Integer or a String. A string is always returned. An EISAID + * is converted to a string. + * + * NOTE: Internal function, no parameter validation + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtExecute_HID ( + ACPI_NAMESPACE_NODE *DeviceNode, + ACPI_DEVICE_ID **ReturnId) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_DEVICE_ID *Hid; + UINT32 Length; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (UtExecute_HID); + + + Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__HID, + ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Get the size of the String to be returned, includes null terminator */ + + if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) + { + Length = ACPI_EISAID_STRING_SIZE; + } + else + { + Length = ObjDesc->String.Length + 1; + } + + /* Allocate a buffer for the HID */ + + Hid = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_DEVICE_ID) + (ACPI_SIZE) Length); + if (!Hid) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* Area for the string starts after DEVICE_ID struct */ + + Hid->String = ACPI_ADD_PTR (char, Hid, sizeof (ACPI_DEVICE_ID)); + + /* Convert EISAID to a string or simply copy existing string */ + + if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) + { + AcpiExEisaIdToString (Hid->String, ObjDesc->Integer.Value); + } + else + { + ACPI_STRCPY (Hid->String, ObjDesc->String.Pointer); + } + + Hid->Length = Length; + *ReturnId = Hid; + + +Cleanup: + + /* On exit, we must delete the return object */ + + AcpiUtRemoveReference (ObjDesc); + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtExecute_UID + * + * PARAMETERS: DeviceNode - Node for the device + * ReturnId - Where the string UID is returned + * + * RETURN: Status + * + * DESCRIPTION: Executes the _UID control method that returns the unique + * ID of the device. The UID is either a 64-bit Integer (NOT an + * EISAID) or a string. Always returns a string. A 64-bit integer + * is converted to a decimal string. + * + * NOTE: Internal function, no parameter validation + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtExecute_UID ( + ACPI_NAMESPACE_NODE *DeviceNode, + ACPI_DEVICE_ID **ReturnId) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_DEVICE_ID *Uid; + UINT32 Length; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (UtExecute_UID); + + + Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__UID, + ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Get the size of the String to be returned, includes null terminator */ + + if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) + { + Length = ACPI_MAX64_DECIMAL_DIGITS + 1; + } + else + { + Length = ObjDesc->String.Length + 1; + } + + /* Allocate a buffer for the UID */ + + Uid = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_DEVICE_ID) + (ACPI_SIZE) Length); + if (!Uid) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* Area for the string starts after DEVICE_ID struct */ + + Uid->String = ACPI_ADD_PTR (char, Uid, sizeof (ACPI_DEVICE_ID)); + + /* Convert an Integer to string, or just copy an existing string */ + + if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) + { + AcpiExIntegerToString (Uid->String, ObjDesc->Integer.Value); + } + else + { + ACPI_STRCPY (Uid->String, ObjDesc->String.Pointer); + } + + Uid->Length = Length; + *ReturnId = Uid; + + +Cleanup: + + /* On exit, we must delete the return object */ + + AcpiUtRemoveReference (ObjDesc); + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtExecute_CID + * + * PARAMETERS: DeviceNode - Node for the device + * ReturnCidList - Where the CID list is returned + * + * RETURN: Status, list of CID strings + * + * DESCRIPTION: Executes the _CID control method that returns one or more + * compatible hardware IDs for the device. + * + * NOTE: Internal function, no parameter validation + * + * A _CID method can return either a single compatible ID or a package of + * compatible IDs. Each compatible ID can be one of the following: + * 1) Integer (32 bit compressed EISA ID) or + * 2) String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss") + * + * The Integer CIDs are converted to string format by this function. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtExecute_CID ( + ACPI_NAMESPACE_NODE *DeviceNode, + ACPI_DEVICE_ID_LIST **ReturnCidList) +{ + ACPI_OPERAND_OBJECT **CidObjects; + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_DEVICE_ID_LIST *CidList; + char *NextIdString; + UINT32 StringAreaSize; + UINT32 Length; + UINT32 CidListSize; + ACPI_STATUS Status; + UINT32 Count; + UINT32 i; + + + ACPI_FUNCTION_TRACE (UtExecute_CID); + + + /* Evaluate the _CID method for this device */ + + Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__CID, + ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_PACKAGE, + &ObjDesc); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* + * Get the count and size of the returned _CIDs. _CID can return either + * a Package of Integers/Strings or a single Integer or String. + * Note: This section also validates that all CID elements are of the + * correct type (Integer or String). + */ + if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE) + { + Count = ObjDesc->Package.Count; + CidObjects = ObjDesc->Package.Elements; + } + else /* Single Integer or String CID */ + { + Count = 1; + CidObjects = &ObjDesc; + } + + StringAreaSize = 0; + for (i = 0; i < Count; i++) + { + /* String lengths include null terminator */ + + switch (CidObjects[i]->Common.Type) + { + case ACPI_TYPE_INTEGER: + StringAreaSize += ACPI_EISAID_STRING_SIZE; + break; + + case ACPI_TYPE_STRING: + StringAreaSize += CidObjects[i]->String.Length + 1; + break; + + default: + Status = AE_TYPE; + goto Cleanup; + } + } + + /* + * Now that we know the length of the CIDs, allocate return buffer: + * 1) Size of the base structure + + * 2) Size of the CID DEVICE_ID array + + * 3) Size of the actual CID strings + */ + CidListSize = sizeof (ACPI_DEVICE_ID_LIST) + + ((Count - 1) * sizeof (ACPI_DEVICE_ID)) + + StringAreaSize; + + CidList = ACPI_ALLOCATE_ZEROED (CidListSize); + if (!CidList) + { + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* Area for CID strings starts after the CID DEVICE_ID array */ + + NextIdString = ACPI_CAST_PTR (char, CidList->Ids) + + ((ACPI_SIZE) Count * sizeof (ACPI_DEVICE_ID)); + + /* Copy/convert the CIDs to the return buffer */ + + for (i = 0; i < Count; i++) + { + if (CidObjects[i]->Common.Type == ACPI_TYPE_INTEGER) + { + /* Convert the Integer (EISAID) CID to a string */ + + AcpiExEisaIdToString (NextIdString, CidObjects[i]->Integer.Value); + Length = ACPI_EISAID_STRING_SIZE; + } + else /* ACPI_TYPE_STRING */ + { + /* Copy the String CID from the returned object */ + + ACPI_STRCPY (NextIdString, CidObjects[i]->String.Pointer); + Length = CidObjects[i]->String.Length + 1; + } + + CidList->Ids[i].String = NextIdString; + CidList->Ids[i].Length = Length; + NextIdString += Length; + } + + /* Finish the CID list */ + + CidList->Count = Count; + CidList->ListSize = CidListSize; + *ReturnCidList = CidList; + + +Cleanup: + + /* On exit, we must delete the _CID return object */ + + AcpiUtRemoveReference (ObjDesc); + return_ACPI_STATUS (Status); +} + |