aslxref.c revision 1.2.4.2
1 1.2.4.2 rmind /****************************************************************************** 2 1.2.4.2 rmind * 3 1.2.4.2 rmind * Module Name: aslxref - Namespace cross-reference 4 1.2.4.2 rmind * 5 1.2.4.2 rmind *****************************************************************************/ 6 1.2.4.2 rmind 7 1.2.4.2 rmind /* 8 1.2.4.2 rmind * Copyright (C) 2000 - 2013, Intel Corp. 9 1.2.4.2 rmind * All rights reserved. 10 1.2.4.2 rmind * 11 1.2.4.2 rmind * Redistribution and use in source and binary forms, with or without 12 1.2.4.2 rmind * modification, are permitted provided that the following conditions 13 1.2.4.2 rmind * are met: 14 1.2.4.2 rmind * 1. Redistributions of source code must retain the above copyright 15 1.2.4.2 rmind * notice, this list of conditions, and the following disclaimer, 16 1.2.4.2 rmind * without modification. 17 1.2.4.2 rmind * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.2.4.2 rmind * substantially similar to the "NO WARRANTY" disclaimer below 19 1.2.4.2 rmind * ("Disclaimer") and any redistribution must be conditioned upon 20 1.2.4.2 rmind * including a substantially similar Disclaimer requirement for further 21 1.2.4.2 rmind * binary redistribution. 22 1.2.4.2 rmind * 3. Neither the names of the above-listed copyright holders nor the names 23 1.2.4.2 rmind * of any contributors may be used to endorse or promote products derived 24 1.2.4.2 rmind * from this software without specific prior written permission. 25 1.2.4.2 rmind * 26 1.2.4.2 rmind * Alternatively, this software may be distributed under the terms of the 27 1.2.4.2 rmind * GNU General Public License ("GPL") version 2 as published by the Free 28 1.2.4.2 rmind * Software Foundation. 29 1.2.4.2 rmind * 30 1.2.4.2 rmind * NO WARRANTY 31 1.2.4.2 rmind * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.2.4.2 rmind * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.2.4.2 rmind * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.2.4.2 rmind * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.2.4.2 rmind * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.2.4.2 rmind * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.2.4.2 rmind * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.2.4.2 rmind * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.2.4.2 rmind * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.2.4.2 rmind * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.2.4.2 rmind * POSSIBILITY OF SUCH DAMAGES. 42 1.2.4.2 rmind */ 43 1.2.4.2 rmind 44 1.2.4.2 rmind 45 1.2.4.2 rmind #include "aslcompiler.h" 46 1.2.4.2 rmind #include "aslcompiler.y.h" 47 1.2.4.2 rmind #include "acparser.h" 48 1.2.4.2 rmind #include "amlcode.h" 49 1.2.4.2 rmind #include "acnamesp.h" 50 1.2.4.2 rmind #include "acdispat.h" 51 1.2.4.2 rmind 52 1.2.4.2 rmind 53 1.2.4.2 rmind #define _COMPONENT ACPI_COMPILER 54 1.2.4.2 rmind ACPI_MODULE_NAME ("aslxref") 55 1.2.4.2 rmind 56 1.2.4.2 rmind /* Local prototypes */ 57 1.2.4.2 rmind 58 1.2.4.2 rmind static ACPI_STATUS 59 1.2.4.2 rmind XfNamespaceLocateBegin ( 60 1.2.4.2 rmind ACPI_PARSE_OBJECT *Op, 61 1.2.4.2 rmind UINT32 Level, 62 1.2.4.2 rmind void *Context); 63 1.2.4.2 rmind 64 1.2.4.2 rmind static ACPI_STATUS 65 1.2.4.2 rmind XfNamespaceLocateEnd ( 66 1.2.4.2 rmind ACPI_PARSE_OBJECT *Op, 67 1.2.4.2 rmind UINT32 Level, 68 1.2.4.2 rmind void *Context); 69 1.2.4.2 rmind 70 1.2.4.2 rmind static BOOLEAN 71 1.2.4.2 rmind XfObjectExists ( 72 1.2.4.2 rmind char *Name); 73 1.2.4.2 rmind 74 1.2.4.2 rmind static ACPI_STATUS 75 1.2.4.2 rmind XfCompareOneNamespaceObject ( 76 1.2.4.2 rmind ACPI_HANDLE ObjHandle, 77 1.2.4.2 rmind UINT32 Level, 78 1.2.4.2 rmind void *Context, 79 1.2.4.2 rmind void **ReturnValue); 80 1.2.4.2 rmind 81 1.2.4.2 rmind static void 82 1.2.4.2 rmind XfCheckFieldRange ( 83 1.2.4.2 rmind ACPI_PARSE_OBJECT *Op, 84 1.2.4.2 rmind UINT32 RegionBitLength, 85 1.2.4.2 rmind UINT32 FieldBitOffset, 86 1.2.4.2 rmind UINT32 FieldBitLength, 87 1.2.4.2 rmind UINT32 AccessBitWidth); 88 1.2.4.2 rmind 89 1.2.4.2 rmind 90 1.2.4.2 rmind /******************************************************************************* 91 1.2.4.2 rmind * 92 1.2.4.2 rmind * FUNCTION: XfCrossReferenceNamespace 93 1.2.4.2 rmind * 94 1.2.4.2 rmind * PARAMETERS: None 95 1.2.4.2 rmind * 96 1.2.4.2 rmind * RETURN: Status 97 1.2.4.2 rmind * 98 1.2.4.2 rmind * DESCRIPTION: Perform a cross reference check of the parse tree against the 99 1.2.4.2 rmind * namespace. Every named referenced within the parse tree 100 1.2.4.2 rmind * should be get resolved with a namespace lookup. If not, the 101 1.2.4.2 rmind * original reference in the ASL code is invalid -- i.e., refers 102 1.2.4.2 rmind * to a non-existent object. 103 1.2.4.2 rmind * 104 1.2.4.2 rmind * NOTE: The ASL "External" operator causes the name to be inserted into the 105 1.2.4.2 rmind * namespace so that references to the external name will be resolved 106 1.2.4.2 rmind * correctly here. 107 1.2.4.2 rmind * 108 1.2.4.2 rmind ******************************************************************************/ 109 1.2.4.2 rmind 110 1.2.4.2 rmind ACPI_STATUS 111 1.2.4.2 rmind XfCrossReferenceNamespace ( 112 1.2.4.2 rmind void) 113 1.2.4.2 rmind { 114 1.2.4.2 rmind ACPI_WALK_STATE *WalkState; 115 1.2.4.2 rmind 116 1.2.4.2 rmind 117 1.2.4.2 rmind DbgPrint (ASL_DEBUG_OUTPUT, "\nCross referencing namespace\n\n"); 118 1.2.4.2 rmind 119 1.2.4.2 rmind /* 120 1.2.4.2 rmind * Create a new walk state for use when looking up names 121 1.2.4.2 rmind * within the namespace (Passed as context to the callbacks) 122 1.2.4.2 rmind */ 123 1.2.4.2 rmind WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); 124 1.2.4.2 rmind if (!WalkState) 125 1.2.4.2 rmind { 126 1.2.4.2 rmind return (AE_NO_MEMORY); 127 1.2.4.2 rmind } 128 1.2.4.2 rmind 129 1.2.4.2 rmind /* Walk the entire parse tree */ 130 1.2.4.2 rmind 131 1.2.4.2 rmind TrWalkParseTree (RootNode, ASL_WALK_VISIT_TWICE, XfNamespaceLocateBegin, 132 1.2.4.2 rmind XfNamespaceLocateEnd, WalkState); 133 1.2.4.2 rmind return (AE_OK); 134 1.2.4.2 rmind } 135 1.2.4.2 rmind 136 1.2.4.2 rmind 137 1.2.4.2 rmind /******************************************************************************* 138 1.2.4.2 rmind * 139 1.2.4.2 rmind * FUNCTION: XfObjectExists 140 1.2.4.2 rmind * 141 1.2.4.2 rmind * PARAMETERS: Name - 4 char ACPI name 142 1.2.4.2 rmind * 143 1.2.4.2 rmind * RETURN: TRUE if name exists in namespace 144 1.2.4.2 rmind * 145 1.2.4.2 rmind * DESCRIPTION: Walk the namespace to find an object 146 1.2.4.2 rmind * 147 1.2.4.2 rmind ******************************************************************************/ 148 1.2.4.2 rmind 149 1.2.4.2 rmind static BOOLEAN 150 1.2.4.2 rmind XfObjectExists ( 151 1.2.4.2 rmind char *Name) 152 1.2.4.2 rmind { 153 1.2.4.2 rmind ACPI_STATUS Status; 154 1.2.4.2 rmind 155 1.2.4.2 rmind 156 1.2.4.2 rmind /* Walk entire namespace from the supplied root */ 157 1.2.4.2 rmind 158 1.2.4.2 rmind Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 159 1.2.4.2 rmind ACPI_UINT32_MAX, FALSE, XfCompareOneNamespaceObject, NULL, 160 1.2.4.2 rmind Name, NULL); 161 1.2.4.2 rmind if (Status == AE_CTRL_TRUE) 162 1.2.4.2 rmind { 163 1.2.4.2 rmind /* At least one instance of the name was found */ 164 1.2.4.2 rmind 165 1.2.4.2 rmind return (TRUE); 166 1.2.4.2 rmind } 167 1.2.4.2 rmind 168 1.2.4.2 rmind return (FALSE); 169 1.2.4.2 rmind } 170 1.2.4.2 rmind 171 1.2.4.2 rmind 172 1.2.4.2 rmind /******************************************************************************* 173 1.2.4.2 rmind * 174 1.2.4.2 rmind * FUNCTION: XfCompareOneNamespaceObject 175 1.2.4.2 rmind * 176 1.2.4.2 rmind * PARAMETERS: ACPI_WALK_CALLBACK 177 1.2.4.2 rmind * 178 1.2.4.2 rmind * RETURN: Status 179 1.2.4.2 rmind * 180 1.2.4.2 rmind * DESCRIPTION: Compare name of one object. 181 1.2.4.2 rmind * 182 1.2.4.2 rmind ******************************************************************************/ 183 1.2.4.2 rmind 184 1.2.4.2 rmind static ACPI_STATUS 185 1.2.4.2 rmind XfCompareOneNamespaceObject ( 186 1.2.4.2 rmind ACPI_HANDLE ObjHandle, 187 1.2.4.2 rmind UINT32 Level, 188 1.2.4.2 rmind void *Context, 189 1.2.4.2 rmind void **ReturnValue) 190 1.2.4.2 rmind { 191 1.2.4.2 rmind ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 192 1.2.4.2 rmind 193 1.2.4.2 rmind 194 1.2.4.2 rmind /* Simply check the name */ 195 1.2.4.2 rmind 196 1.2.4.2 rmind if (*((UINT32 *) (Context)) == Node->Name.Integer) 197 1.2.4.2 rmind { 198 1.2.4.2 rmind /* Abort walk if we found one instance */ 199 1.2.4.2 rmind 200 1.2.4.2 rmind return (AE_CTRL_TRUE); 201 1.2.4.2 rmind } 202 1.2.4.2 rmind 203 1.2.4.2 rmind return (AE_OK); 204 1.2.4.2 rmind } 205 1.2.4.2 rmind 206 1.2.4.2 rmind 207 1.2.4.2 rmind /******************************************************************************* 208 1.2.4.2 rmind * 209 1.2.4.2 rmind * FUNCTION: XfCheckFieldRange 210 1.2.4.2 rmind * 211 1.2.4.2 rmind * PARAMETERS: RegionBitLength - Length of entire parent region 212 1.2.4.2 rmind * FieldBitOffset - Start of the field unit (within region) 213 1.2.4.2 rmind * FieldBitLength - Entire length of field unit 214 1.2.4.2 rmind * AccessBitWidth - Access width of the field unit 215 1.2.4.2 rmind * 216 1.2.4.2 rmind * RETURN: None 217 1.2.4.2 rmind * 218 1.2.4.2 rmind * DESCRIPTION: Check one field unit to make sure it fits in the parent 219 1.2.4.2 rmind * op region. 220 1.2.4.2 rmind * 221 1.2.4.2 rmind * Note: AccessBitWidth must be either 8,16,32, or 64 222 1.2.4.2 rmind * 223 1.2.4.2 rmind ******************************************************************************/ 224 1.2.4.2 rmind 225 1.2.4.2 rmind static void 226 1.2.4.2 rmind XfCheckFieldRange ( 227 1.2.4.2 rmind ACPI_PARSE_OBJECT *Op, 228 1.2.4.2 rmind UINT32 RegionBitLength, 229 1.2.4.2 rmind UINT32 FieldBitOffset, 230 1.2.4.2 rmind UINT32 FieldBitLength, 231 1.2.4.2 rmind UINT32 AccessBitWidth) 232 1.2.4.2 rmind { 233 1.2.4.2 rmind UINT32 FieldEndBitOffset; 234 1.2.4.2 rmind 235 1.2.4.2 rmind 236 1.2.4.2 rmind /* 237 1.2.4.2 rmind * Check each field unit against the region size. The entire 238 1.2.4.2 rmind * field unit (start offset plus length) must fit within the 239 1.2.4.2 rmind * region. 240 1.2.4.2 rmind */ 241 1.2.4.2 rmind FieldEndBitOffset = FieldBitOffset + FieldBitLength; 242 1.2.4.2 rmind 243 1.2.4.2 rmind if (FieldEndBitOffset > RegionBitLength) 244 1.2.4.2 rmind { 245 1.2.4.2 rmind /* Field definition itself is beyond the end-of-region */ 246 1.2.4.2 rmind 247 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_OFFSET, Op, NULL); 248 1.2.4.2 rmind return; 249 1.2.4.2 rmind } 250 1.2.4.2 rmind 251 1.2.4.2 rmind /* 252 1.2.4.2 rmind * Now check that the field plus AccessWidth doesn't go beyond 253 1.2.4.2 rmind * the end-of-region. Assumes AccessBitWidth is a power of 2 254 1.2.4.2 rmind */ 255 1.2.4.2 rmind FieldEndBitOffset = ACPI_ROUND_UP (FieldEndBitOffset, AccessBitWidth); 256 1.2.4.2 rmind 257 1.2.4.2 rmind if (FieldEndBitOffset > RegionBitLength) 258 1.2.4.2 rmind { 259 1.2.4.2 rmind /* Field definition combined with the access is beyond EOR */ 260 1.2.4.2 rmind 261 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_ACCESS_WIDTH, Op, NULL); 262 1.2.4.2 rmind } 263 1.2.4.2 rmind } 264 1.2.4.2 rmind 265 1.2.4.2 rmind /******************************************************************************* 266 1.2.4.2 rmind * 267 1.2.4.2 rmind * FUNCTION: XfNamespaceLocateBegin 268 1.2.4.2 rmind * 269 1.2.4.2 rmind * PARAMETERS: ASL_WALK_CALLBACK 270 1.2.4.2 rmind * 271 1.2.4.2 rmind * RETURN: Status 272 1.2.4.2 rmind * 273 1.2.4.2 rmind * DESCRIPTION: Descending callback used during cross-reference. For named 274 1.2.4.2 rmind * object references, attempt to locate the name in the 275 1.2.4.2 rmind * namespace. 276 1.2.4.2 rmind * 277 1.2.4.2 rmind * NOTE: ASL references to named fields within resource descriptors are 278 1.2.4.2 rmind * resolved to integer values here. Therefore, this step is an 279 1.2.4.2 rmind * important part of the code generation. We don't know that the 280 1.2.4.2 rmind * name refers to a resource descriptor until now. 281 1.2.4.2 rmind * 282 1.2.4.2 rmind ******************************************************************************/ 283 1.2.4.2 rmind 284 1.2.4.2 rmind static ACPI_STATUS 285 1.2.4.2 rmind XfNamespaceLocateBegin ( 286 1.2.4.2 rmind ACPI_PARSE_OBJECT *Op, 287 1.2.4.2 rmind UINT32 Level, 288 1.2.4.2 rmind void *Context) 289 1.2.4.2 rmind { 290 1.2.4.2 rmind ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; 291 1.2.4.2 rmind ACPI_NAMESPACE_NODE *Node; 292 1.2.4.2 rmind ACPI_STATUS Status; 293 1.2.4.2 rmind ACPI_OBJECT_TYPE ObjectType; 294 1.2.4.2 rmind char *Path; 295 1.2.4.2 rmind UINT8 PassedArgs; 296 1.2.4.2 rmind ACPI_PARSE_OBJECT *NextOp; 297 1.2.4.2 rmind ACPI_PARSE_OBJECT *OwningOp; 298 1.2.4.2 rmind ACPI_PARSE_OBJECT *SpaceIdOp; 299 1.2.4.2 rmind UINT32 MinimumLength; 300 1.2.4.2 rmind UINT32 Offset; 301 1.2.4.2 rmind UINT32 FieldBitLength; 302 1.2.4.2 rmind UINT32 TagBitLength; 303 1.2.4.2 rmind UINT8 Message = 0; 304 1.2.4.2 rmind const ACPI_OPCODE_INFO *OpInfo; 305 1.2.4.2 rmind UINT32 Flags; 306 1.2.4.2 rmind 307 1.2.4.2 rmind 308 1.2.4.2 rmind ACPI_FUNCTION_TRACE_PTR (XfNamespaceLocateBegin, Op); 309 1.2.4.2 rmind 310 1.2.4.2 rmind /* 311 1.2.4.2 rmind * If this node is the actual declaration of a name 312 1.2.4.2 rmind * [such as the XXXX name in "Method (XXXX)"], 313 1.2.4.2 rmind * we are not interested in it here. We only care about names that are 314 1.2.4.2 rmind * references to other objects within the namespace and the parent objects 315 1.2.4.2 rmind * of name declarations 316 1.2.4.2 rmind */ 317 1.2.4.2 rmind if (Op->Asl.CompileFlags & NODE_IS_NAME_DECLARATION) 318 1.2.4.2 rmind { 319 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 320 1.2.4.2 rmind } 321 1.2.4.2 rmind 322 1.2.4.2 rmind /* We are only interested in opcodes that have an associated name */ 323 1.2.4.2 rmind 324 1.2.4.2 rmind OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); 325 1.2.4.2 rmind 326 1.2.4.2 rmind if ((!(OpInfo->Flags & AML_NAMED)) && 327 1.2.4.2 rmind (!(OpInfo->Flags & AML_CREATE)) && 328 1.2.4.2 rmind (Op->Asl.ParseOpcode != PARSEOP_NAMESTRING) && 329 1.2.4.2 rmind (Op->Asl.ParseOpcode != PARSEOP_NAMESEG) && 330 1.2.4.2 rmind (Op->Asl.ParseOpcode != PARSEOP_METHODCALL)) 331 1.2.4.2 rmind { 332 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 333 1.2.4.2 rmind } 334 1.2.4.2 rmind 335 1.2.4.2 rmind /* 336 1.2.4.2 rmind * One special case: CondRefOf operator - we don't care if the name exists 337 1.2.4.2 rmind * or not at this point, just ignore it, the point of the operator is to 338 1.2.4.2 rmind * determine if the name exists at runtime. 339 1.2.4.2 rmind */ 340 1.2.4.2 rmind if ((Op->Asl.Parent) && 341 1.2.4.2 rmind (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF)) 342 1.2.4.2 rmind { 343 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 344 1.2.4.2 rmind } 345 1.2.4.2 rmind 346 1.2.4.2 rmind /* 347 1.2.4.2 rmind * We must enable the "search-to-root" for single NameSegs, but 348 1.2.4.2 rmind * we have to be very careful about opening up scopes 349 1.2.4.2 rmind */ 350 1.2.4.2 rmind Flags = ACPI_NS_SEARCH_PARENT; 351 1.2.4.2 rmind if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || 352 1.2.4.2 rmind (Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 353 1.2.4.2 rmind (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) 354 1.2.4.2 rmind { 355 1.2.4.2 rmind /* 356 1.2.4.2 rmind * These are name references, do not push the scope stack 357 1.2.4.2 rmind * for them. 358 1.2.4.2 rmind */ 359 1.2.4.2 rmind Flags |= ACPI_NS_DONT_OPEN_SCOPE; 360 1.2.4.2 rmind } 361 1.2.4.2 rmind 362 1.2.4.2 rmind /* Get the NamePath from the appropriate place */ 363 1.2.4.2 rmind 364 1.2.4.2 rmind if (OpInfo->Flags & AML_NAMED) 365 1.2.4.2 rmind { 366 1.2.4.2 rmind /* For nearly all NAMED operators, the name reference is the first child */ 367 1.2.4.2 rmind 368 1.2.4.2 rmind Path = Op->Asl.Child->Asl.Value.String; 369 1.2.4.2 rmind if (Op->Asl.AmlOpcode == AML_ALIAS_OP) 370 1.2.4.2 rmind { 371 1.2.4.2 rmind /* 372 1.2.4.2 rmind * ALIAS is the only oddball opcode, the name declaration 373 1.2.4.2 rmind * (alias name) is the second operand 374 1.2.4.2 rmind */ 375 1.2.4.2 rmind Path = Op->Asl.Child->Asl.Next->Asl.Value.String; 376 1.2.4.2 rmind } 377 1.2.4.2 rmind } 378 1.2.4.2 rmind else if (OpInfo->Flags & AML_CREATE) 379 1.2.4.2 rmind { 380 1.2.4.2 rmind /* Name must appear as the last parameter */ 381 1.2.4.2 rmind 382 1.2.4.2 rmind NextOp = Op->Asl.Child; 383 1.2.4.2 rmind while (!(NextOp->Asl.CompileFlags & NODE_IS_NAME_DECLARATION)) 384 1.2.4.2 rmind { 385 1.2.4.2 rmind NextOp = NextOp->Asl.Next; 386 1.2.4.2 rmind } 387 1.2.4.2 rmind Path = NextOp->Asl.Value.String; 388 1.2.4.2 rmind } 389 1.2.4.2 rmind else 390 1.2.4.2 rmind { 391 1.2.4.2 rmind Path = Op->Asl.Value.String; 392 1.2.4.2 rmind } 393 1.2.4.2 rmind 394 1.2.4.2 rmind ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 395 1.2.4.2 rmind ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 396 1.2.4.2 rmind "Type=%s\n", AcpiUtGetTypeName (ObjectType))); 397 1.2.4.2 rmind 398 1.2.4.2 rmind /* 399 1.2.4.2 rmind * Lookup the name in the namespace. Name must exist at this point, or it 400 1.2.4.2 rmind * is an invalid reference. 401 1.2.4.2 rmind * 402 1.2.4.2 rmind * The namespace is also used as a lookup table for references to resource 403 1.2.4.2 rmind * descriptors and the fields within them. 404 1.2.4.2 rmind */ 405 1.2.4.2 rmind Gbl_NsLookupCount++; 406 1.2.4.2 rmind 407 1.2.4.2 rmind Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 408 1.2.4.2 rmind ACPI_IMODE_EXECUTE, Flags, WalkState, &(Node)); 409 1.2.4.2 rmind if (ACPI_FAILURE (Status)) 410 1.2.4.2 rmind { 411 1.2.4.2 rmind if (Status == AE_NOT_FOUND) 412 1.2.4.2 rmind { 413 1.2.4.2 rmind /* 414 1.2.4.2 rmind * We didn't find the name reference by path -- we can qualify this 415 1.2.4.2 rmind * a little better before we print an error message 416 1.2.4.2 rmind */ 417 1.2.4.2 rmind if (strlen (Path) == ACPI_NAME_SIZE) 418 1.2.4.2 rmind { 419 1.2.4.2 rmind /* A simple, one-segment ACPI name */ 420 1.2.4.2 rmind 421 1.2.4.2 rmind if (XfObjectExists (Path)) 422 1.2.4.2 rmind { 423 1.2.4.2 rmind /* 424 1.2.4.2 rmind * There exists such a name, but we couldn't get to it 425 1.2.4.2 rmind * from this scope 426 1.2.4.2 rmind */ 427 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_NOT_REACHABLE, Op, 428 1.2.4.2 rmind Op->Asl.ExternalName); 429 1.2.4.2 rmind } 430 1.2.4.2 rmind else 431 1.2.4.2 rmind { 432 1.2.4.2 rmind /* The name doesn't exist, period */ 433 1.2.4.2 rmind 434 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_NOT_EXIST, 435 1.2.4.2 rmind Op, Op->Asl.ExternalName); 436 1.2.4.2 rmind } 437 1.2.4.2 rmind } 438 1.2.4.2 rmind else 439 1.2.4.2 rmind { 440 1.2.4.2 rmind /* Check for a fully qualified path */ 441 1.2.4.2 rmind 442 1.2.4.2 rmind if (Path[0] == AML_ROOT_PREFIX) 443 1.2.4.2 rmind { 444 1.2.4.2 rmind /* Gave full path, the object does not exist */ 445 1.2.4.2 rmind 446 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_NOT_EXIST, Op, 447 1.2.4.2 rmind Op->Asl.ExternalName); 448 1.2.4.2 rmind } 449 1.2.4.2 rmind else 450 1.2.4.2 rmind { 451 1.2.4.2 rmind /* 452 1.2.4.2 rmind * We can't tell whether it doesn't exist or just 453 1.2.4.2 rmind * can't be reached. 454 1.2.4.2 rmind */ 455 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, 456 1.2.4.2 rmind Op->Asl.ExternalName); 457 1.2.4.2 rmind } 458 1.2.4.2 rmind } 459 1.2.4.2 rmind 460 1.2.4.2 rmind Status = AE_OK; 461 1.2.4.2 rmind } 462 1.2.4.2 rmind 463 1.2.4.2 rmind return_ACPI_STATUS (Status); 464 1.2.4.2 rmind } 465 1.2.4.2 rmind 466 1.2.4.2 rmind /* Check for a reference vs. name declaration */ 467 1.2.4.2 rmind 468 1.2.4.2 rmind if (!(OpInfo->Flags & AML_NAMED) && 469 1.2.4.2 rmind !(OpInfo->Flags & AML_CREATE)) 470 1.2.4.2 rmind { 471 1.2.4.2 rmind /* This node has been referenced, mark it for reference check */ 472 1.2.4.2 rmind 473 1.2.4.2 rmind Node->Flags |= ANOBJ_IS_REFERENCED; 474 1.2.4.2 rmind } 475 1.2.4.2 rmind 476 1.2.4.2 rmind /* Attempt to optimize the NamePath */ 477 1.2.4.2 rmind 478 1.2.4.2 rmind OptOptimizeNamePath (Op, OpInfo->Flags, WalkState, Path, Node); 479 1.2.4.2 rmind 480 1.2.4.2 rmind /* 481 1.2.4.2 rmind * 1) Dereference an alias (A name reference that is an alias) 482 1.2.4.2 rmind * Aliases are not nested, the alias always points to the final object 483 1.2.4.2 rmind */ 484 1.2.4.2 rmind if ((Op->Asl.ParseOpcode != PARSEOP_ALIAS) && 485 1.2.4.2 rmind (Node->Type == ACPI_TYPE_LOCAL_ALIAS)) 486 1.2.4.2 rmind { 487 1.2.4.2 rmind /* This node points back to the original PARSEOP_ALIAS */ 488 1.2.4.2 rmind 489 1.2.4.2 rmind NextOp = Node->Op; 490 1.2.4.2 rmind 491 1.2.4.2 rmind /* The first child is the alias target op */ 492 1.2.4.2 rmind 493 1.2.4.2 rmind NextOp = NextOp->Asl.Child; 494 1.2.4.2 rmind 495 1.2.4.2 rmind /* That in turn points back to original target alias node */ 496 1.2.4.2 rmind 497 1.2.4.2 rmind if (NextOp->Asl.Node) 498 1.2.4.2 rmind { 499 1.2.4.2 rmind Node = NextOp->Asl.Node; 500 1.2.4.2 rmind } 501 1.2.4.2 rmind 502 1.2.4.2 rmind /* Else - forward reference to alias, will be resolved later */ 503 1.2.4.2 rmind } 504 1.2.4.2 rmind 505 1.2.4.2 rmind /* 2) Check for a reference to a resource descriptor */ 506 1.2.4.2 rmind 507 1.2.4.2 rmind if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE_FIELD) || 508 1.2.4.2 rmind (Node->Type == ACPI_TYPE_LOCAL_RESOURCE)) 509 1.2.4.2 rmind { 510 1.2.4.2 rmind /* 511 1.2.4.2 rmind * This was a reference to a field within a resource descriptor. 512 1.2.4.2 rmind * Extract the associated field offset (either a bit or byte 513 1.2.4.2 rmind * offset depending on the field type) and change the named 514 1.2.4.2 rmind * reference into an integer for AML code generation 515 1.2.4.2 rmind */ 516 1.2.4.2 rmind Offset = Node->Value; 517 1.2.4.2 rmind TagBitLength = Node->Length; 518 1.2.4.2 rmind 519 1.2.4.2 rmind /* 520 1.2.4.2 rmind * If a field is being created, generate the length (in bits) of 521 1.2.4.2 rmind * the field. Note: Opcodes other than CreateXxxField and Index 522 1.2.4.2 rmind * can come through here. For other opcodes, we just need to 523 1.2.4.2 rmind * convert the resource tag reference to an integer offset. 524 1.2.4.2 rmind */ 525 1.2.4.2 rmind switch (Op->Asl.Parent->Asl.AmlOpcode) 526 1.2.4.2 rmind { 527 1.2.4.2 rmind case AML_CREATE_FIELD_OP: /* Variable "Length" field, in bits */ 528 1.2.4.2 rmind /* 529 1.2.4.2 rmind * We know the length operand is an integer constant because 530 1.2.4.2 rmind * we know that it contains a reference to a resource 531 1.2.4.2 rmind * descriptor tag. 532 1.2.4.2 rmind */ 533 1.2.4.2 rmind FieldBitLength = (UINT32) Op->Asl.Next->Asl.Value.Integer; 534 1.2.4.2 rmind break; 535 1.2.4.2 rmind 536 1.2.4.2 rmind case AML_CREATE_BIT_FIELD_OP: 537 1.2.4.2 rmind 538 1.2.4.2 rmind FieldBitLength = 1; 539 1.2.4.2 rmind break; 540 1.2.4.2 rmind 541 1.2.4.2 rmind case AML_CREATE_BYTE_FIELD_OP: 542 1.2.4.2 rmind case AML_INDEX_OP: 543 1.2.4.2 rmind 544 1.2.4.2 rmind FieldBitLength = 8; 545 1.2.4.2 rmind break; 546 1.2.4.2 rmind 547 1.2.4.2 rmind case AML_CREATE_WORD_FIELD_OP: 548 1.2.4.2 rmind 549 1.2.4.2 rmind FieldBitLength = 16; 550 1.2.4.2 rmind break; 551 1.2.4.2 rmind 552 1.2.4.2 rmind case AML_CREATE_DWORD_FIELD_OP: 553 1.2.4.2 rmind 554 1.2.4.2 rmind FieldBitLength = 32; 555 1.2.4.2 rmind break; 556 1.2.4.2 rmind 557 1.2.4.2 rmind case AML_CREATE_QWORD_FIELD_OP: 558 1.2.4.2 rmind 559 1.2.4.2 rmind FieldBitLength = 64; 560 1.2.4.2 rmind break; 561 1.2.4.2 rmind 562 1.2.4.2 rmind default: 563 1.2.4.2 rmind 564 1.2.4.2 rmind FieldBitLength = 0; 565 1.2.4.2 rmind break; 566 1.2.4.2 rmind } 567 1.2.4.2 rmind 568 1.2.4.2 rmind /* Check the field length against the length of the resource tag */ 569 1.2.4.2 rmind 570 1.2.4.2 rmind if (FieldBitLength) 571 1.2.4.2 rmind { 572 1.2.4.2 rmind if (TagBitLength < FieldBitLength) 573 1.2.4.2 rmind { 574 1.2.4.2 rmind Message = ASL_MSG_TAG_SMALLER; 575 1.2.4.2 rmind } 576 1.2.4.2 rmind else if (TagBitLength > FieldBitLength) 577 1.2.4.2 rmind { 578 1.2.4.2 rmind Message = ASL_MSG_TAG_LARGER; 579 1.2.4.2 rmind } 580 1.2.4.2 rmind 581 1.2.4.2 rmind if (Message) 582 1.2.4.2 rmind { 583 1.2.4.2 rmind snprintf (MsgBuffer, sizeof(MsgBuffer), "Size mismatch, Tag: %u bit%s, Field: %u bit%s", 584 1.2.4.2 rmind TagBitLength, (TagBitLength > 1) ? "s" : "", 585 1.2.4.2 rmind FieldBitLength, (FieldBitLength > 1) ? "s" : ""); 586 1.2.4.2 rmind 587 1.2.4.2 rmind AslError (ASL_WARNING, Message, Op, MsgBuffer); 588 1.2.4.2 rmind } 589 1.2.4.2 rmind } 590 1.2.4.2 rmind 591 1.2.4.2 rmind /* Convert the BitOffset to a ByteOffset for certain opcodes */ 592 1.2.4.2 rmind 593 1.2.4.2 rmind switch (Op->Asl.Parent->Asl.AmlOpcode) 594 1.2.4.2 rmind { 595 1.2.4.2 rmind case AML_CREATE_BYTE_FIELD_OP: 596 1.2.4.2 rmind case AML_CREATE_WORD_FIELD_OP: 597 1.2.4.2 rmind case AML_CREATE_DWORD_FIELD_OP: 598 1.2.4.2 rmind case AML_CREATE_QWORD_FIELD_OP: 599 1.2.4.2 rmind case AML_INDEX_OP: 600 1.2.4.2 rmind 601 1.2.4.2 rmind Offset = ACPI_DIV_8 (Offset); 602 1.2.4.2 rmind break; 603 1.2.4.2 rmind 604 1.2.4.2 rmind default: 605 1.2.4.2 rmind 606 1.2.4.2 rmind break; 607 1.2.4.2 rmind } 608 1.2.4.2 rmind 609 1.2.4.2 rmind /* Now convert this node to an integer whose value is the field offset */ 610 1.2.4.2 rmind 611 1.2.4.2 rmind Op->Asl.AmlLength = 0; 612 1.2.4.2 rmind Op->Asl.ParseOpcode = PARSEOP_INTEGER; 613 1.2.4.2 rmind Op->Asl.Value.Integer = (UINT64) Offset; 614 1.2.4.2 rmind Op->Asl.CompileFlags |= NODE_IS_RESOURCE_FIELD; 615 1.2.4.2 rmind 616 1.2.4.2 rmind OpcGenerateAmlOpcode (Op); 617 1.2.4.2 rmind } 618 1.2.4.2 rmind 619 1.2.4.2 rmind /* 3) Check for a method invocation */ 620 1.2.4.2 rmind 621 1.2.4.2 rmind else if ((((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || (Op->Asl.ParseOpcode == PARSEOP_NAMESEG)) && 622 1.2.4.2 rmind (Node->Type == ACPI_TYPE_METHOD) && 623 1.2.4.2 rmind (Op->Asl.Parent) && 624 1.2.4.2 rmind (Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_METHOD)) || 625 1.2.4.2 rmind 626 1.2.4.2 rmind (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) 627 1.2.4.2 rmind { 628 1.2.4.2 rmind /* 629 1.2.4.2 rmind * A reference to a method within one of these opcodes is not an 630 1.2.4.2 rmind * invocation of the method, it is simply a reference to the method. 631 1.2.4.2 rmind */ 632 1.2.4.2 rmind if ((Op->Asl.Parent) && 633 1.2.4.2 rmind ((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_REFOF) || 634 1.2.4.2 rmind (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_DEREFOF) || 635 1.2.4.2 rmind (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_OBJECTTYPE))) 636 1.2.4.2 rmind { 637 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 638 1.2.4.2 rmind } 639 1.2.4.2 rmind /* 640 1.2.4.2 rmind * There are two types of method invocation: 641 1.2.4.2 rmind * 1) Invocation with arguments -- the parser recognizes this 642 1.2.4.2 rmind * as a METHODCALL. 643 1.2.4.2 rmind * 2) Invocation with no arguments --the parser cannot determine that 644 1.2.4.2 rmind * this is a method invocation, therefore we have to figure it out 645 1.2.4.2 rmind * here. 646 1.2.4.2 rmind */ 647 1.2.4.2 rmind if (Node->Type != ACPI_TYPE_METHOD) 648 1.2.4.2 rmind { 649 1.2.4.2 rmind snprintf (MsgBuffer, sizeof(MsgBuffer), "%s is a %s", 650 1.2.4.2 rmind Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type)); 651 1.2.4.2 rmind 652 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_NOT_METHOD, Op, MsgBuffer); 653 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 654 1.2.4.2 rmind } 655 1.2.4.2 rmind 656 1.2.4.2 rmind /* Save the method node in the caller's op */ 657 1.2.4.2 rmind 658 1.2.4.2 rmind Op->Asl.Node = Node; 659 1.2.4.2 rmind if (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF) 660 1.2.4.2 rmind { 661 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 662 1.2.4.2 rmind } 663 1.2.4.2 rmind 664 1.2.4.2 rmind /* 665 1.2.4.2 rmind * This is a method invocation, with or without arguments. 666 1.2.4.2 rmind * Count the number of arguments, each appears as a child 667 1.2.4.2 rmind * under the parent node 668 1.2.4.2 rmind */ 669 1.2.4.2 rmind Op->Asl.ParseOpcode = PARSEOP_METHODCALL; 670 1.2.4.2 rmind UtSetParseOpName (Op); 671 1.2.4.2 rmind 672 1.2.4.2 rmind PassedArgs = 0; 673 1.2.4.2 rmind NextOp = Op->Asl.Child; 674 1.2.4.2 rmind 675 1.2.4.2 rmind while (NextOp) 676 1.2.4.2 rmind { 677 1.2.4.2 rmind PassedArgs++; 678 1.2.4.2 rmind NextOp = NextOp->Asl.Next; 679 1.2.4.2 rmind } 680 1.2.4.2 rmind 681 1.2.4.2 rmind if (Node->Value != ASL_EXTERNAL_METHOD) 682 1.2.4.2 rmind { 683 1.2.4.2 rmind /* 684 1.2.4.2 rmind * Check the parsed arguments with the number expected by the 685 1.2.4.2 rmind * method declaration itself 686 1.2.4.2 rmind */ 687 1.2.4.2 rmind if (PassedArgs != Node->Value) 688 1.2.4.2 rmind { 689 1.2.4.2 rmind snprintf (MsgBuffer, sizeof(MsgBuffer), "%s requires %u", Op->Asl.ExternalName, 690 1.2.4.2 rmind Node->Value); 691 1.2.4.2 rmind 692 1.2.4.2 rmind if (PassedArgs < Node->Value) 693 1.2.4.2 rmind { 694 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_LO, Op, MsgBuffer); 695 1.2.4.2 rmind } 696 1.2.4.2 rmind else 697 1.2.4.2 rmind { 698 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_HI, Op, MsgBuffer); 699 1.2.4.2 rmind } 700 1.2.4.2 rmind } 701 1.2.4.2 rmind } 702 1.2.4.2 rmind } 703 1.2.4.2 rmind 704 1.2.4.2 rmind /* 4) Check for an ASL Field definition */ 705 1.2.4.2 rmind 706 1.2.4.2 rmind else if ((Op->Asl.Parent) && 707 1.2.4.2 rmind ((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_FIELD) || 708 1.2.4.2 rmind (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_BANKFIELD))) 709 1.2.4.2 rmind { 710 1.2.4.2 rmind /* 711 1.2.4.2 rmind * Offset checking for fields. If the parent operation region has a 712 1.2.4.2 rmind * constant length (known at compile time), we can check fields 713 1.2.4.2 rmind * defined in that region against the region length. This will catch 714 1.2.4.2 rmind * fields and field units that cannot possibly fit within the region. 715 1.2.4.2 rmind * 716 1.2.4.2 rmind * Note: Index fields do not directly reference an operation region, 717 1.2.4.2 rmind * thus they are not included in this check. 718 1.2.4.2 rmind */ 719 1.2.4.2 rmind if (Op == Op->Asl.Parent->Asl.Child) 720 1.2.4.2 rmind { 721 1.2.4.2 rmind /* 722 1.2.4.2 rmind * This is the first child of the field node, which is 723 1.2.4.2 rmind * the name of the region. Get the parse node for the 724 1.2.4.2 rmind * region -- which contains the length of the region. 725 1.2.4.2 rmind */ 726 1.2.4.2 rmind OwningOp = Node->Op; 727 1.2.4.2 rmind Op->Asl.Parent->Asl.ExtraValue = 728 1.2.4.2 rmind ACPI_MUL_8 ((UINT32) OwningOp->Asl.Value.Integer); 729 1.2.4.2 rmind 730 1.2.4.2 rmind /* Examine the field access width */ 731 1.2.4.2 rmind 732 1.2.4.2 rmind switch ((UINT8) Op->Asl.Parent->Asl.Value.Integer) 733 1.2.4.2 rmind { 734 1.2.4.2 rmind case AML_FIELD_ACCESS_ANY: 735 1.2.4.2 rmind case AML_FIELD_ACCESS_BYTE: 736 1.2.4.2 rmind case AML_FIELD_ACCESS_BUFFER: 737 1.2.4.2 rmind default: 738 1.2.4.2 rmind 739 1.2.4.2 rmind MinimumLength = 1; 740 1.2.4.2 rmind break; 741 1.2.4.2 rmind 742 1.2.4.2 rmind case AML_FIELD_ACCESS_WORD: 743 1.2.4.2 rmind 744 1.2.4.2 rmind MinimumLength = 2; 745 1.2.4.2 rmind break; 746 1.2.4.2 rmind 747 1.2.4.2 rmind case AML_FIELD_ACCESS_DWORD: 748 1.2.4.2 rmind 749 1.2.4.2 rmind MinimumLength = 4; 750 1.2.4.2 rmind break; 751 1.2.4.2 rmind 752 1.2.4.2 rmind case AML_FIELD_ACCESS_QWORD: 753 1.2.4.2 rmind 754 1.2.4.2 rmind MinimumLength = 8; 755 1.2.4.2 rmind break; 756 1.2.4.2 rmind } 757 1.2.4.2 rmind 758 1.2.4.2 rmind /* 759 1.2.4.2 rmind * Is the region at least as big as the access width? 760 1.2.4.2 rmind * Note: DataTableRegions have 0 length 761 1.2.4.2 rmind */ 762 1.2.4.2 rmind if (((UINT32) OwningOp->Asl.Value.Integer) && 763 1.2.4.2 rmind ((UINT32) OwningOp->Asl.Value.Integer < MinimumLength)) 764 1.2.4.2 rmind { 765 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_FIELD_ACCESS_WIDTH, Op, NULL); 766 1.2.4.2 rmind } 767 1.2.4.2 rmind 768 1.2.4.2 rmind /* 769 1.2.4.2 rmind * Check EC/CMOS/SMBUS fields to make sure that the correct 770 1.2.4.2 rmind * access type is used (BYTE for EC/CMOS, BUFFER for SMBUS) 771 1.2.4.2 rmind */ 772 1.2.4.2 rmind SpaceIdOp = OwningOp->Asl.Child->Asl.Next; 773 1.2.4.2 rmind switch ((UINT32) SpaceIdOp->Asl.Value.Integer) 774 1.2.4.2 rmind { 775 1.2.4.2 rmind case ACPI_ADR_SPACE_EC: 776 1.2.4.2 rmind case ACPI_ADR_SPACE_CMOS: 777 1.2.4.2 rmind case ACPI_ADR_SPACE_GPIO: 778 1.2.4.2 rmind 779 1.2.4.2 rmind if ((UINT8) Op->Asl.Parent->Asl.Value.Integer != AML_FIELD_ACCESS_BYTE) 780 1.2.4.2 rmind { 781 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_REGION_BYTE_ACCESS, Op, NULL); 782 1.2.4.2 rmind } 783 1.2.4.2 rmind break; 784 1.2.4.2 rmind 785 1.2.4.2 rmind case ACPI_ADR_SPACE_SMBUS: 786 1.2.4.2 rmind case ACPI_ADR_SPACE_IPMI: 787 1.2.4.2 rmind case ACPI_ADR_SPACE_GSBUS: 788 1.2.4.2 rmind 789 1.2.4.2 rmind if ((UINT8) Op->Asl.Parent->Asl.Value.Integer != AML_FIELD_ACCESS_BUFFER) 790 1.2.4.2 rmind { 791 1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_REGION_BUFFER_ACCESS, Op, NULL); 792 1.2.4.2 rmind } 793 1.2.4.2 rmind break; 794 1.2.4.2 rmind 795 1.2.4.2 rmind default: 796 1.2.4.2 rmind 797 1.2.4.2 rmind /* Nothing to do for other address spaces */ 798 1.2.4.2 rmind 799 1.2.4.2 rmind break; 800 1.2.4.2 rmind } 801 1.2.4.2 rmind } 802 1.2.4.2 rmind else 803 1.2.4.2 rmind { 804 1.2.4.2 rmind /* 805 1.2.4.2 rmind * This is one element of the field list. Check to make sure 806 1.2.4.2 rmind * that it does not go beyond the end of the parent operation region. 807 1.2.4.2 rmind * 808 1.2.4.2 rmind * In the code below: 809 1.2.4.2 rmind * Op->Asl.Parent->Asl.ExtraValue - Region Length (bits) 810 1.2.4.2 rmind * Op->Asl.ExtraValue - Field start offset (bits) 811 1.2.4.2 rmind * Op->Asl.Child->Asl.Value.Integer32 - Field length (bits) 812 1.2.4.2 rmind * Op->Asl.Child->Asl.ExtraValue - Field access width (bits) 813 1.2.4.2 rmind */ 814 1.2.4.2 rmind if (Op->Asl.Parent->Asl.ExtraValue && Op->Asl.Child) 815 1.2.4.2 rmind { 816 1.2.4.2 rmind XfCheckFieldRange (Op, 817 1.2.4.2 rmind Op->Asl.Parent->Asl.ExtraValue, 818 1.2.4.2 rmind Op->Asl.ExtraValue, 819 1.2.4.2 rmind (UINT32) Op->Asl.Child->Asl.Value.Integer, 820 1.2.4.2 rmind Op->Asl.Child->Asl.ExtraValue); 821 1.2.4.2 rmind } 822 1.2.4.2 rmind } 823 1.2.4.2 rmind } 824 1.2.4.2 rmind 825 1.2.4.2 rmind Op->Asl.Node = Node; 826 1.2.4.2 rmind return_ACPI_STATUS (Status); 827 1.2.4.2 rmind } 828 1.2.4.2 rmind 829 1.2.4.2 rmind 830 1.2.4.2 rmind /******************************************************************************* 831 1.2.4.2 rmind * 832 1.2.4.2 rmind * FUNCTION: XfNamespaceLocateEnd 833 1.2.4.2 rmind * 834 1.2.4.2 rmind * PARAMETERS: ASL_WALK_CALLBACK 835 1.2.4.2 rmind * 836 1.2.4.2 rmind * RETURN: Status 837 1.2.4.2 rmind * 838 1.2.4.2 rmind * DESCRIPTION: Ascending callback used during cross reference. We only 839 1.2.4.2 rmind * need to worry about scope management here. 840 1.2.4.2 rmind * 841 1.2.4.2 rmind ******************************************************************************/ 842 1.2.4.2 rmind 843 1.2.4.2 rmind static ACPI_STATUS 844 1.2.4.2 rmind XfNamespaceLocateEnd ( 845 1.2.4.2 rmind ACPI_PARSE_OBJECT *Op, 846 1.2.4.2 rmind UINT32 Level, 847 1.2.4.2 rmind void *Context) 848 1.2.4.2 rmind { 849 1.2.4.2 rmind ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; 850 1.2.4.2 rmind const ACPI_OPCODE_INFO *OpInfo; 851 1.2.4.2 rmind 852 1.2.4.2 rmind 853 1.2.4.2 rmind ACPI_FUNCTION_TRACE (XfNamespaceLocateEnd); 854 1.2.4.2 rmind 855 1.2.4.2 rmind 856 1.2.4.2 rmind /* We are only interested in opcodes that have an associated name */ 857 1.2.4.2 rmind 858 1.2.4.2 rmind OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); 859 1.2.4.2 rmind if (!(OpInfo->Flags & AML_NAMED)) 860 1.2.4.2 rmind { 861 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 862 1.2.4.2 rmind } 863 1.2.4.2 rmind 864 1.2.4.2 rmind /* Not interested in name references, we did not open a scope for them */ 865 1.2.4.2 rmind 866 1.2.4.2 rmind if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || 867 1.2.4.2 rmind (Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || 868 1.2.4.2 rmind (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) 869 1.2.4.2 rmind { 870 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 871 1.2.4.2 rmind } 872 1.2.4.2 rmind 873 1.2.4.2 rmind /* Pop the scope stack if necessary */ 874 1.2.4.2 rmind 875 1.2.4.2 rmind if (AcpiNsOpensScope (AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode))) 876 1.2.4.2 rmind { 877 1.2.4.2 rmind 878 1.2.4.2 rmind ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 879 1.2.4.2 rmind "%s: Popping scope for Op %p\n", 880 1.2.4.2 rmind AcpiUtGetTypeName (OpInfo->ObjectType), Op)); 881 1.2.4.2 rmind 882 1.2.4.2 rmind (void) AcpiDsScopeStackPop (WalkState); 883 1.2.4.2 rmind } 884 1.2.4.2 rmind 885 1.2.4.2 rmind return_ACPI_STATUS (AE_OK); 886 1.2.4.2 rmind } 887
Indexes created Thu Sep 25 16:09:42 GMT 2025