nsparse.c revision 1.1.1.2.4.2
1 1.1.1.2.4.2 rmind /****************************************************************************** 2 1.1.1.2.4.2 rmind * 3 1.1.1.2.4.2 rmind * Module Name: nsparse - namespace interface to AML parser 4 1.1.1.2.4.2 rmind * 5 1.1.1.2.4.2 rmind *****************************************************************************/ 6 1.1.1.2.4.2 rmind 7 1.1.1.2.4.2 rmind /* 8 1.1.1.2.4.2 rmind * Copyright (C) 2000 - 2011, Intel Corp. 9 1.1.1.2.4.2 rmind * All rights reserved. 10 1.1.1.2.4.2 rmind * 11 1.1.1.2.4.2 rmind * Redistribution and use in source and binary forms, with or without 12 1.1.1.2.4.2 rmind * modification, are permitted provided that the following conditions 13 1.1.1.2.4.2 rmind * are met: 14 1.1.1.2.4.2 rmind * 1. Redistributions of source code must retain the above copyright 15 1.1.1.2.4.2 rmind * notice, this list of conditions, and the following disclaimer, 16 1.1.1.2.4.2 rmind * without modification. 17 1.1.1.2.4.2 rmind * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.1.1.2.4.2 rmind * substantially similar to the "NO WARRANTY" disclaimer below 19 1.1.1.2.4.2 rmind * ("Disclaimer") and any redistribution must be conditioned upon 20 1.1.1.2.4.2 rmind * including a substantially similar Disclaimer requirement for further 21 1.1.1.2.4.2 rmind * binary redistribution. 22 1.1.1.2.4.2 rmind * 3. Neither the names of the above-listed copyright holders nor the names 23 1.1.1.2.4.2 rmind * of any contributors may be used to endorse or promote products derived 24 1.1.1.2.4.2 rmind * from this software without specific prior written permission. 25 1.1.1.2.4.2 rmind * 26 1.1.1.2.4.2 rmind * Alternatively, this software may be distributed under the terms of the 27 1.1.1.2.4.2 rmind * GNU General Public License ("GPL") version 2 as published by the Free 28 1.1.1.2.4.2 rmind * Software Foundation. 29 1.1.1.2.4.2 rmind * 30 1.1.1.2.4.2 rmind * NO WARRANTY 31 1.1.1.2.4.2 rmind * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.1.1.2.4.2 rmind * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.1.1.2.4.2 rmind * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.1.1.2.4.2 rmind * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.1.1.2.4.2 rmind * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.1.1.2.4.2 rmind * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.1.1.2.4.2 rmind * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.1.1.2.4.2 rmind * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.1.1.2.4.2 rmind * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.1.1.2.4.2 rmind * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.1.1.2.4.2 rmind * POSSIBILITY OF SUCH DAMAGES. 42 1.1.1.2.4.2 rmind */ 43 1.1.1.2.4.2 rmind 44 1.1.1.2.4.2 rmind #define __NSPARSE_C__ 45 1.1.1.2.4.2 rmind 46 1.1.1.2.4.2 rmind #include "acpi.h" 47 1.1.1.2.4.2 rmind #include "accommon.h" 48 1.1.1.2.4.2 rmind #include "acnamesp.h" 49 1.1.1.2.4.2 rmind #include "acparser.h" 50 1.1.1.2.4.2 rmind #include "acdispat.h" 51 1.1.1.2.4.2 rmind #include "actables.h" 52 1.1.1.2.4.2 rmind 53 1.1.1.2.4.2 rmind 54 1.1.1.2.4.2 rmind #define _COMPONENT ACPI_NAMESPACE 55 1.1.1.2.4.2 rmind ACPI_MODULE_NAME ("nsparse") 56 1.1.1.2.4.2 rmind 57 1.1.1.2.4.2 rmind 58 1.1.1.2.4.2 rmind /******************************************************************************* 59 1.1.1.2.4.2 rmind * 60 1.1.1.2.4.2 rmind * FUNCTION: NsOneCompleteParse 61 1.1.1.2.4.2 rmind * 62 1.1.1.2.4.2 rmind * PARAMETERS: PassNumber - 1 or 2 63 1.1.1.2.4.2 rmind * TableDesc - The table to be parsed. 64 1.1.1.2.4.2 rmind * 65 1.1.1.2.4.2 rmind * RETURN: Status 66 1.1.1.2.4.2 rmind * 67 1.1.1.2.4.2 rmind * DESCRIPTION: Perform one complete parse of an ACPI/AML table. 68 1.1.1.2.4.2 rmind * 69 1.1.1.2.4.2 rmind ******************************************************************************/ 70 1.1.1.2.4.2 rmind 71 1.1.1.2.4.2 rmind ACPI_STATUS 72 1.1.1.2.4.2 rmind AcpiNsOneCompleteParse ( 73 1.1.1.2.4.2 rmind UINT32 PassNumber, 74 1.1.1.2.4.2 rmind UINT32 TableIndex, 75 1.1.1.2.4.2 rmind ACPI_NAMESPACE_NODE *StartNode) 76 1.1.1.2.4.2 rmind { 77 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *ParseRoot; 78 1.1.1.2.4.2 rmind ACPI_STATUS Status; 79 1.1.1.2.4.2 rmind UINT32 AmlLength; 80 1.1.1.2.4.2 rmind UINT8 *AmlStart; 81 1.1.1.2.4.2 rmind ACPI_WALK_STATE *WalkState; 82 1.1.1.2.4.2 rmind ACPI_TABLE_HEADER *Table; 83 1.1.1.2.4.2 rmind ACPI_OWNER_ID OwnerId; 84 1.1.1.2.4.2 rmind 85 1.1.1.2.4.2 rmind 86 1.1.1.2.4.2 rmind ACPI_FUNCTION_TRACE (NsOneCompleteParse); 87 1.1.1.2.4.2 rmind 88 1.1.1.2.4.2 rmind 89 1.1.1.2.4.2 rmind Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); 90 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 91 1.1.1.2.4.2 rmind { 92 1.1.1.2.4.2 rmind return_ACPI_STATUS (Status); 93 1.1.1.2.4.2 rmind } 94 1.1.1.2.4.2 rmind 95 1.1.1.2.4.2 rmind /* Create and init a Root Node */ 96 1.1.1.2.4.2 rmind 97 1.1.1.2.4.2 rmind ParseRoot = AcpiPsCreateScopeOp (); 98 1.1.1.2.4.2 rmind if (!ParseRoot) 99 1.1.1.2.4.2 rmind { 100 1.1.1.2.4.2 rmind return_ACPI_STATUS (AE_NO_MEMORY); 101 1.1.1.2.4.2 rmind } 102 1.1.1.2.4.2 rmind 103 1.1.1.2.4.2 rmind /* Create and initialize a new walk state */ 104 1.1.1.2.4.2 rmind 105 1.1.1.2.4.2 rmind WalkState = AcpiDsCreateWalkState (OwnerId, NULL, NULL, NULL); 106 1.1.1.2.4.2 rmind if (!WalkState) 107 1.1.1.2.4.2 rmind { 108 1.1.1.2.4.2 rmind AcpiPsFreeOp (ParseRoot); 109 1.1.1.2.4.2 rmind return_ACPI_STATUS (AE_NO_MEMORY); 110 1.1.1.2.4.2 rmind } 111 1.1.1.2.4.2 rmind 112 1.1.1.2.4.2 rmind Status = AcpiGetTableByIndex (TableIndex, &Table); 113 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 114 1.1.1.2.4.2 rmind { 115 1.1.1.2.4.2 rmind AcpiDsDeleteWalkState (WalkState); 116 1.1.1.2.4.2 rmind AcpiPsFreeOp (ParseRoot); 117 1.1.1.2.4.2 rmind return_ACPI_STATUS (Status); 118 1.1.1.2.4.2 rmind } 119 1.1.1.2.4.2 rmind 120 1.1.1.2.4.2 rmind /* Table must consist of at least a complete header */ 121 1.1.1.2.4.2 rmind 122 1.1.1.2.4.2 rmind if (Table->Length < sizeof (ACPI_TABLE_HEADER)) 123 1.1.1.2.4.2 rmind { 124 1.1.1.2.4.2 rmind Status = AE_BAD_HEADER; 125 1.1.1.2.4.2 rmind } 126 1.1.1.2.4.2 rmind else 127 1.1.1.2.4.2 rmind { 128 1.1.1.2.4.2 rmind AmlStart = (UINT8 *) Table + sizeof (ACPI_TABLE_HEADER); 129 1.1.1.2.4.2 rmind AmlLength = Table->Length - sizeof (ACPI_TABLE_HEADER); 130 1.1.1.2.4.2 rmind Status = AcpiDsInitAmlWalk (WalkState, ParseRoot, NULL, 131 1.1.1.2.4.2 rmind AmlStart, AmlLength, NULL, (UINT8) PassNumber); 132 1.1.1.2.4.2 rmind } 133 1.1.1.2.4.2 rmind 134 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 135 1.1.1.2.4.2 rmind { 136 1.1.1.2.4.2 rmind AcpiDsDeleteWalkState (WalkState); 137 1.1.1.2.4.2 rmind goto Cleanup; 138 1.1.1.2.4.2 rmind } 139 1.1.1.2.4.2 rmind 140 1.1.1.2.4.2 rmind /* StartNode is the default location to load the table */ 141 1.1.1.2.4.2 rmind 142 1.1.1.2.4.2 rmind if (StartNode && StartNode != AcpiGbl_RootNode) 143 1.1.1.2.4.2 rmind { 144 1.1.1.2.4.2 rmind Status = AcpiDsScopeStackPush (StartNode, ACPI_TYPE_METHOD, WalkState); 145 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 146 1.1.1.2.4.2 rmind { 147 1.1.1.2.4.2 rmind AcpiDsDeleteWalkState (WalkState); 148 1.1.1.2.4.2 rmind goto Cleanup; 149 1.1.1.2.4.2 rmind } 150 1.1.1.2.4.2 rmind } 151 1.1.1.2.4.2 rmind 152 1.1.1.2.4.2 rmind /* Parse the AML */ 153 1.1.1.2.4.2 rmind 154 1.1.1.2.4.2 rmind ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %u parse\n", PassNumber)); 155 1.1.1.2.4.2 rmind Status = AcpiPsParseAml (WalkState); 156 1.1.1.2.4.2 rmind 157 1.1.1.2.4.2 rmind Cleanup: 158 1.1.1.2.4.2 rmind AcpiPsDeleteParseTree (ParseRoot); 159 1.1.1.2.4.2 rmind return_ACPI_STATUS (Status); 160 1.1.1.2.4.2 rmind } 161 1.1.1.2.4.2 rmind 162 1.1.1.2.4.2 rmind 163 1.1.1.2.4.2 rmind /******************************************************************************* 164 1.1.1.2.4.2 rmind * 165 1.1.1.2.4.2 rmind * FUNCTION: AcpiNsParseTable 166 1.1.1.2.4.2 rmind * 167 1.1.1.2.4.2 rmind * PARAMETERS: TableDesc - An ACPI table descriptor for table to parse 168 1.1.1.2.4.2 rmind * StartNode - Where to enter the table into the namespace 169 1.1.1.2.4.2 rmind * 170 1.1.1.2.4.2 rmind * RETURN: Status 171 1.1.1.2.4.2 rmind * 172 1.1.1.2.4.2 rmind * DESCRIPTION: Parse AML within an ACPI table and return a tree of ops 173 1.1.1.2.4.2 rmind * 174 1.1.1.2.4.2 rmind ******************************************************************************/ 175 1.1.1.2.4.2 rmind 176 1.1.1.2.4.2 rmind ACPI_STATUS 177 1.1.1.2.4.2 rmind AcpiNsParseTable ( 178 1.1.1.2.4.2 rmind UINT32 TableIndex, 179 1.1.1.2.4.2 rmind ACPI_NAMESPACE_NODE *StartNode) 180 1.1.1.2.4.2 rmind { 181 1.1.1.2.4.2 rmind ACPI_STATUS Status; 182 1.1.1.2.4.2 rmind 183 1.1.1.2.4.2 rmind 184 1.1.1.2.4.2 rmind ACPI_FUNCTION_TRACE (NsParseTable); 185 1.1.1.2.4.2 rmind 186 1.1.1.2.4.2 rmind 187 1.1.1.2.4.2 rmind /* 188 1.1.1.2.4.2 rmind * AML Parse, pass 1 189 1.1.1.2.4.2 rmind * 190 1.1.1.2.4.2 rmind * In this pass, we load most of the namespace. Control methods 191 1.1.1.2.4.2 rmind * are not parsed until later. A parse tree is not created. Instead, 192 1.1.1.2.4.2 rmind * each Parser Op subtree is deleted when it is finished. This saves 193 1.1.1.2.4.2 rmind * a great deal of memory, and allows a small cache of parse objects 194 1.1.1.2.4.2 rmind * to service the entire parse. The second pass of the parse then 195 1.1.1.2.4.2 rmind * performs another complete parse of the AML. 196 1.1.1.2.4.2 rmind */ 197 1.1.1.2.4.2 rmind ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Start pass 1\n")); 198 1.1.1.2.4.2 rmind Status = AcpiNsOneCompleteParse (ACPI_IMODE_LOAD_PASS1, 199 1.1.1.2.4.2 rmind TableIndex, StartNode); 200 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 201 1.1.1.2.4.2 rmind { 202 1.1.1.2.4.2 rmind return_ACPI_STATUS (Status); 203 1.1.1.2.4.2 rmind } 204 1.1.1.2.4.2 rmind 205 1.1.1.2.4.2 rmind /* 206 1.1.1.2.4.2 rmind * AML Parse, pass 2 207 1.1.1.2.4.2 rmind * 208 1.1.1.2.4.2 rmind * In this pass, we resolve forward references and other things 209 1.1.1.2.4.2 rmind * that could not be completed during the first pass. 210 1.1.1.2.4.2 rmind * Another complete parse of the AML is performed, but the 211 1.1.1.2.4.2 rmind * overhead of this is compensated for by the fact that the 212 1.1.1.2.4.2 rmind * parse objects are all cached. 213 1.1.1.2.4.2 rmind */ 214 1.1.1.2.4.2 rmind ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Start pass 2\n")); 215 1.1.1.2.4.2 rmind Status = AcpiNsOneCompleteParse (ACPI_IMODE_LOAD_PASS2, 216 1.1.1.2.4.2 rmind TableIndex, StartNode); 217 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 218 1.1.1.2.4.2 rmind { 219 1.1.1.2.4.2 rmind return_ACPI_STATUS (Status); 220 1.1.1.2.4.2 rmind } 221 1.1.1.2.4.2 rmind 222 1.1.1.2.4.2 rmind return_ACPI_STATUS (Status); 223 1.1.1.2.4.2 rmind } 224 1.1.1.2.4.2 rmind 225 1.1.1.2.4.2 rmind 226
Indexes created Wed Oct 01 18:09:54 GMT 2025