403 lines
11 KiB
C
403 lines
11 KiB
C
/******************************************************************************
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*
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* Module Name: aslmaputils - Utilities for the resource descriptor/device maps
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2015, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "acpi.h"
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#include "accommon.h"
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#include "acapps.h"
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#include "aslcompiler.h"
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#include "aslcompiler.y.h"
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#include "acinterp.h"
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#include "acnamesp.h"
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#include "amlcode.h"
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/* This module used for application-level code only */
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslmaputils")
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/*******************************************************************************
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*
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* FUNCTION: MpGetHidFromParseTree
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*
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* PARAMETERS: HidNode - Node for a _HID object
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*
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* RETURN: An _HID string value. Automatically converts _HID integers
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* to strings. Never NULL.
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*
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* DESCRIPTION: Extract a _HID value from the parse tree, not the namespace.
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* Used when a fully initialized namespace is not available.
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*
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******************************************************************************/
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char *
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MpGetHidFromParseTree (
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ACPI_NAMESPACE_NODE *HidNode)
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{
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ACPI_PARSE_OBJECT *Op;
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ACPI_PARSE_OBJECT *Arg;
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char *HidString;
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Op = HidNode->Op;
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switch (Op->Asl.ParseOpcode)
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{
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case PARSEOP_NAME:
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Arg = Op->Asl.Child; /* Get the NameSeg/NameString node */
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Arg = Arg->Asl.Next; /* First peer is the object to be associated with the name */
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switch (Arg->Asl.ParseOpcode)
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{
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case PARSEOP_STRING_LITERAL:
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return (Arg->Asl.Value.String);
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case PARSEOP_INTEGER:
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/* Convert EISAID to a string */
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HidString = UtStringCacheCalloc (ACPI_EISAID_STRING_SIZE);
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AcpiExEisaIdToString (HidString, Arg->Asl.Value.Integer);
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return (HidString);
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default:
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return ("UNKNOWN");
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}
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default:
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return ("-No HID-");
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: MpGetHidValue
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*
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* PARAMETERS: DeviceNode - Node for parent device
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*
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* RETURN: An _HID string value. Automatically converts _HID integers
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* to strings. Never NULL.
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*
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* DESCRIPTION: Extract _HID value from within a device scope. Does not
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* actually execute a method, just gets the string or integer
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* value for the _HID.
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*
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******************************************************************************/
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char *
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MpGetHidValue (
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ACPI_NAMESPACE_NODE *DeviceNode)
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{
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ACPI_NAMESPACE_NODE *HidNode;
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char *HidString;
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ACPI_STATUS Status;
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Status = AcpiNsGetNode (DeviceNode, METHOD_NAME__HID,
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ACPI_NS_NO_UPSEARCH, &HidNode);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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/* If only partial namespace, get the _HID from the parse tree */
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if (!HidNode->Object)
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{
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return (MpGetHidFromParseTree (HidNode));
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}
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/* Handle the different _HID flavors */
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switch (HidNode->Type)
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{
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case ACPI_TYPE_STRING:
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return (HidNode->Object->String.Pointer);
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case ACPI_TYPE_INTEGER:
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/* Convert EISAID to a string */
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HidString = UtStringCacheCalloc (ACPI_EISAID_STRING_SIZE);
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AcpiExEisaIdToString (HidString, HidNode->Object->Integer.Value);
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return (HidString);
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case ACPI_TYPE_METHOD:
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return ("-Method-");
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default:
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FlPrintFile (ASL_FILE_MAP_OUTPUT, "BAD HID TYPE: %u", HidNode->Type);
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break;
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}
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ErrorExit:
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return ("-No HID-");
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}
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/*******************************************************************************
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*
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* FUNCTION: MpGetHidViaNamestring
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*
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* PARAMETERS: DeviceName - Namepath for parent device
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*
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* RETURN: _HID string. Never NULL.
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*
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* DESCRIPTION: Get a _HID value via a device pathname (instead of just simply
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* a device node.)
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*
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******************************************************************************/
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char *
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MpGetHidViaNamestring (
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char *DeviceName)
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{
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ACPI_NAMESPACE_NODE *DeviceNode;
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ACPI_STATUS Status;
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Status = AcpiNsGetNode (NULL, DeviceName, ACPI_NS_NO_UPSEARCH,
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&DeviceNode);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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return (MpGetHidValue (DeviceNode));
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ErrorExit:
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return ("-No HID-");
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}
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/*******************************************************************************
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*
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* FUNCTION: MpGetParentDeviceHid
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*
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* PARAMETERS: Op - Parse Op to be examined
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* TargetNode - Where the field node is returned
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* ParentDeviceName - Where the node path is returned
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*
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* RETURN: _HID string. Never NULL.
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*
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* DESCRIPTION: Find the parent Device or Scope Op, get the full pathname to
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* the parent, and get the _HID associated with the parent.
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*
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******************************************************************************/
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char *
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MpGetParentDeviceHid (
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ACPI_PARSE_OBJECT *Op,
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ACPI_NAMESPACE_NODE **TargetNode,
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char **ParentDeviceName)
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{
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ACPI_NAMESPACE_NODE *DeviceNode;
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/* Find parent Device() or Scope() Op */
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while (Op &&
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(Op->Asl.AmlOpcode != AML_DEVICE_OP) &&
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(Op->Asl.AmlOpcode != AML_SCOPE_OP))
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{
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Op = Op->Asl.Parent;
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}
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if (!Op)
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{
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FlPrintFile (ASL_FILE_MAP_OUTPUT, " No_Parent_Device ");
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goto ErrorExit;
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}
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/* Get the full pathname to the device and the _HID */
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DeviceNode = Op->Asl.Node;
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if (!DeviceNode)
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{
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FlPrintFile (ASL_FILE_MAP_OUTPUT, " No_Device_Node ");
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goto ErrorExit;
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}
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*ParentDeviceName = AcpiNsGetExternalPathname (DeviceNode);
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return (MpGetHidValue (DeviceNode));
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ErrorExit:
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return ("-No HID-");
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}
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/*******************************************************************************
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*
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* FUNCTION: MpGetDdnValue
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*
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* PARAMETERS: DeviceName - Namepath for parent device
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*
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* RETURN: _DDN description string. NULL on failure.
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*
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* DESCRIPTION: Execute the _DDN method for the device.
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*
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******************************************************************************/
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char *
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MpGetDdnValue (
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char *DeviceName)
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{
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ACPI_NAMESPACE_NODE *DeviceNode;
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ACPI_NAMESPACE_NODE *DdnNode;
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ACPI_STATUS Status;
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Status = AcpiNsGetNode (NULL, DeviceName, ACPI_NS_NO_UPSEARCH,
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&DeviceNode);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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Status = AcpiNsGetNode (DeviceNode, METHOD_NAME__DDN, ACPI_NS_NO_UPSEARCH,
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&DdnNode);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorExit;
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}
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if ((DdnNode->Type != ACPI_TYPE_STRING) ||
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!DdnNode->Object)
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{
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goto ErrorExit;
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}
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return (DdnNode->Object->String.Pointer);
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ErrorExit:
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return (NULL);
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}
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/*******************************************************************************
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*
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* FUNCTION: MpGetConnectionInfo
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*
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* PARAMETERS: Op - Parse Op to be examined
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* PinIndex - Index into GPIO PinList
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* TargetNode - Where the field node is returned
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* TargetName - Where the node path is returned
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*
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* RETURN: A substitute _HID string, indicating that the name is actually
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* a field. NULL if the Op does not refer to a Connection.
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*
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* DESCRIPTION: Get the Field Unit that corresponds to the PinIndex after
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* a Connection() invocation.
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*
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******************************************************************************/
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char *
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MpGetConnectionInfo (
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ACPI_PARSE_OBJECT *Op,
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UINT32 PinIndex,
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ACPI_NAMESPACE_NODE **TargetNode,
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char **TargetName)
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{
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ACPI_PARSE_OBJECT *NextOp;
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UINT32 i;
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/*
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* Handle Connection() here. Find the next named FieldUnit.
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* Note: we look at the ParseOpcode for the compiler, look
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* at the AmlOpcode for the disassembler.
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*/
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if ((Op->Asl.AmlOpcode == AML_INT_CONNECTION_OP) ||
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(Op->Asl.ParseOpcode == PARSEOP_CONNECTION))
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{
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/* Find the correct field unit definition */
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NextOp = Op;
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for (i = 0; i <= PinIndex;)
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{
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NextOp = NextOp->Asl.Next;
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while (NextOp &&
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(NextOp->Asl.ParseOpcode != PARSEOP_NAMESEG) &&
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(NextOp->Asl.AmlOpcode != AML_INT_NAMEDFIELD_OP))
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{
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NextOp = NextOp->Asl.Next;
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}
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if (!NextOp)
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{
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return ("UNKNOWN");
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}
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/* Add length of this field to the current pin index */
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if (NextOp->Asl.ParseOpcode == PARSEOP_NAMESEG)
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{
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i += (UINT32) NextOp->Asl.Child->Asl.Value.Integer;
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}
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else /* AML_INT_NAMEDFIELD_OP */
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{
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i += (UINT32) NextOp->Asl.Value.Integer;
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}
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}
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/* Return the node and pathname for the field unit */
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*TargetNode = NextOp->Asl.Node;
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*TargetName = AcpiNsGetExternalPathname (*TargetNode);
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return ("-Field-");
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}
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return (NULL);
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}
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