/******************************************************************************
*
* Module Name: aslmaputils - Utilities for the resource descriptor/device maps
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2018, 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.
*/
#include "acpi.h"
#include "accommon.h"
#include "acapps.h"
#include "aslcompiler.h"
#include "aslcompiler.y.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "amlcode.h"
/* This module used for application-level code only */
#define _COMPONENT ACPI_COMPILER
ACPI_MODULE_NAME ("aslmaputils")
/*******************************************************************************
*
* FUNCTION: MpGetHidFromParseTree
*
* PARAMETERS: HidNode - Node for a _HID object
*
* RETURN: An _HID string value. Automatically converts _HID integers
* to strings. Never NULL.
*
* DESCRIPTION: Extract a _HID value from the parse tree, not the namespace.
* Used when a fully initialized namespace is not available.
*
******************************************************************************/
char *
MpGetHidFromParseTree (
ACPI_NAMESPACE_NODE *HidNode)
{
ACPI_PARSE_OBJECT *Op;
ACPI_PARSE_OBJECT *Arg;
char *HidString;
Op = HidNode->Op;
if (!Op)
{
/* Object is not resolved, probably an External */
return ("Unresolved Symbol - referenced but not defined in this table");
}
switch (Op->Asl.ParseOpcode)
{
case PARSEOP_NAME:
Arg = Op->Asl.Child; /* Get the NameSeg/NameString node */
Arg = Arg->Asl.Next; /* First peer is the object to be associated with the name */
switch (Arg->Asl.ParseOpcode)
{
case PARSEOP_STRING_LITERAL:
return (Arg->Asl.Value.String);
case PARSEOP_INTEGER:
/* Convert EISAID to a string */
HidString = UtLocalCacheCalloc (ACPI_EISAID_STRING_SIZE);
AcpiExEisaIdToString (HidString, Arg->Asl.Value.Integer);
return (HidString);
default:
return ("UNKNOWN");
}
default:
return ("-No HID-");
}
}
/*******************************************************************************
*
* FUNCTION: MpGetHidValue
*
* PARAMETERS: DeviceNode - Node for parent device
*
* RETURN: An _HID string value. Automatically converts _HID integers
* to strings. Never NULL.
*
* DESCRIPTION: Extract _HID value from within a device scope. Does not
* actually execute a method, just gets the string or integer
* value for the _HID.
*
******************************************************************************/
char *
MpGetHidValue (
ACPI_NAMESPACE_NODE *DeviceNode)
{
ACPI_NAMESPACE_NODE *HidNode;
char *HidString;
ACPI_STATUS Status;
Status = AcpiNsGetNode (DeviceNode, METHOD_NAME__HID,
ACPI_NS_NO_UPSEARCH, &HidNode);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
/* If only partial namespace, get the _HID from the parse tree */
if (!HidNode->Object)
{
return (MpGetHidFromParseTree (HidNode));
}
/* Handle the different _HID flavors */
switch (HidNode->Type)
{
case ACPI_TYPE_STRING:
return (HidNode->Object->String.Pointer);
case ACPI_TYPE_INTEGER:
/* Convert EISAID to a string */
HidString = UtLocalCacheCalloc (ACPI_EISAID_STRING_SIZE);
AcpiExEisaIdToString (HidString, HidNode->Object->Integer.Value);
return (HidString);
case ACPI_TYPE_METHOD:
return ("-Method-");
default:
FlPrintFile (ASL_FILE_MAP_OUTPUT, "BAD HID TYPE: %u", HidNode->Type);
break;
}
ErrorExit:
return ("-No HID-");
}
/*******************************************************************************
*
* FUNCTION: MpGetHidViaNamestring
*
* PARAMETERS: DeviceName - Namepath for parent device
*
* RETURN: _HID string. Never NULL.
*
* DESCRIPTION: Get a _HID value via a device pathname (instead of just simply
* a device node.)
*
******************************************************************************/
char *
MpGetHidViaNamestring (
char *DeviceName)
{
ACPI_NAMESPACE_NODE *DeviceNode;
ACPI_STATUS Status;
Status = AcpiNsGetNode (NULL, DeviceName, ACPI_NS_NO_UPSEARCH,
&DeviceNode);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
return (MpGetHidValue (DeviceNode));
ErrorExit:
return ("-No HID-");
}
/*******************************************************************************
*
* FUNCTION: MpGetParentDeviceHid
*
* PARAMETERS: Op - Parse Op to be examined
* TargetNode - Where the field node is returned
* ParentDeviceName - Where the node path is returned
*
* RETURN: _HID string. Never NULL.
*
* DESCRIPTION: Find the parent Device or Scope Op, get the full pathname to
* the parent, and get the _HID associated with the parent.
*
******************************************************************************/
char *
MpGetParentDeviceHid (
ACPI_PARSE_OBJECT *Op,
ACPI_NAMESPACE_NODE **TargetNode,
char **ParentDeviceName)
{
ACPI_NAMESPACE_NODE *DeviceNode;
/* Find parent Device() or Scope() Op */
while (Op &&
(Op->Asl.AmlOpcode != AML_DEVICE_OP) &&
(Op->Asl.AmlOpcode != AML_SCOPE_OP))
{
Op = Op->Asl.Parent;
}
if (!Op)
{
FlPrintFile (ASL_FILE_MAP_OUTPUT, " No_Parent_Device ");
goto ErrorExit;
}
/* Get the full pathname to the device and the _HID */
DeviceNode = Op->Asl.Node;
if (!DeviceNode)
{
FlPrintFile (ASL_FILE_MAP_OUTPUT, " No_Device_Node ");
goto ErrorExit;
}
*ParentDeviceName = AcpiNsGetExternalPathname (DeviceNode);
return (MpGetHidValue (DeviceNode));
ErrorExit:
return ("-No HID-");
}
/*******************************************************************************
*
* FUNCTION: MpGetDdnValue
*
* PARAMETERS: DeviceName - Namepath for parent device
*
* RETURN: _DDN description string. NULL on failure.
*
* DESCRIPTION: Execute the _DDN method for the device.
*
******************************************************************************/
char *
MpGetDdnValue (
char *DeviceName)
{
ACPI_NAMESPACE_NODE *DeviceNode;
ACPI_NAMESPACE_NODE *DdnNode;
ACPI_STATUS Status;
Status = AcpiNsGetNode (NULL, DeviceName, ACPI_NS_NO_UPSEARCH,
&DeviceNode);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
Status = AcpiNsGetNode (DeviceNode, METHOD_NAME__DDN, ACPI_NS_NO_UPSEARCH,
&DdnNode);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
if ((DdnNode->Type != ACPI_TYPE_STRING) ||
!DdnNode->Object)
{
goto ErrorExit;
}
return (DdnNode->Object->String.Pointer);
ErrorExit:
return (NULL);
}
/*******************************************************************************
*
* FUNCTION: MpGetConnectionInfo
*
* PARAMETERS: Op - Parse Op to be examined
* PinIndex - Index into GPIO PinList
* TargetNode - Where the field node is returned
* TargetName - Where the node path is returned
*
* RETURN: A substitute _HID string, indicating that the name is actually
* a field. NULL if the Op does not refer to a Connection.
*
* DESCRIPTION: Get the Field Unit that corresponds to the PinIndex after
* a Connection() invocation.
*
******************************************************************************/
char *
MpGetConnectionInfo (
ACPI_PARSE_OBJECT *Op,
UINT32 PinIndex,
ACPI_NAMESPACE_NODE **TargetNode,
char **TargetName)
{
ACPI_PARSE_OBJECT *NextOp;
UINT32 i;
/*
* Handle Connection() here. Find the next named FieldUnit.
* Note: we look at the ParseOpcode for the compiler, look
* at the AmlOpcode for the disassembler.
*/
if ((Op->Asl.AmlOpcode == AML_INT_CONNECTION_OP) ||
(Op->Asl.ParseOpcode == PARSEOP_CONNECTION))
{
/* Find the correct field unit definition */
NextOp = Op;
for (i = 0; i <= PinIndex;)
{
NextOp = NextOp->Asl.Next;
while (NextOp &&
(NextOp->Asl.ParseOpcode != PARSEOP_NAMESEG) &&
(NextOp->Asl.AmlOpcode != AML_INT_NAMEDFIELD_OP))
{
NextOp = NextOp->Asl.Next;
}
if (!NextOp)
{
return ("UNKNOWN");
}
/* Add length of this field to the current pin index */
if (NextOp->Asl.ParseOpcode == PARSEOP_NAMESEG)
{
i += (UINT32) NextOp->Asl.Child->Asl.Value.Integer;
}
else /* AML_INT_NAMEDFIELD_OP */
{
i += (UINT32) NextOp->Asl.Value.Integer;
}
}
/* Return the node and pathname for the field unit */
*TargetNode = NextOp->Asl.Node;
*TargetName = AcpiNsGetExternalPathname (*TargetNode);
return ("-Field-");
}
return (NULL);
}