1 /****************************************************************************** 2 * 3 * Module Name: dsargs - Support for execution of dynamic arguments for static 4 * objects (regions, fields, buffer fields, etc.) 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2013, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 #define __DSARGS_C__ 118 119 #include "acpi.h" 120 #include "accommon.h" 121 #include "acparser.h" 122 #include "amlcode.h" 123 #include "acdispat.h" 124 #include "acnamesp.h" 125 126 #define _COMPONENT ACPI_DISPATCHER 127 ACPI_MODULE_NAME ("dsargs") 128 129 /* Local prototypes */ 130 131 static ACPI_STATUS 132 AcpiDsExecuteArguments ( 133 ACPI_NAMESPACE_NODE *Node, 134 ACPI_NAMESPACE_NODE *ScopeNode, 135 UINT32 AmlLength, 136 UINT8 *AmlStart); 137 138 139 /******************************************************************************* 140 * 141 * FUNCTION: AcpiDsExecuteArguments 142 * 143 * PARAMETERS: Node - Object NS node 144 * ScopeNode - Parent NS node 145 * AmlLength - Length of executable AML 146 * AmlStart - Pointer to the AML 147 * 148 * RETURN: Status. 149 * 150 * DESCRIPTION: Late (deferred) execution of region or field arguments 151 * 152 ******************************************************************************/ 153 154 static ACPI_STATUS 155 AcpiDsExecuteArguments ( 156 ACPI_NAMESPACE_NODE *Node, 157 ACPI_NAMESPACE_NODE *ScopeNode, 158 UINT32 AmlLength, 159 UINT8 *AmlStart) 160 { 161 ACPI_STATUS Status; 162 ACPI_PARSE_OBJECT *Op; 163 ACPI_WALK_STATE *WalkState; 164 165 166 ACPI_FUNCTION_TRACE (DsExecuteArguments); 167 168 169 /* Allocate a new parser op to be the root of the parsed tree */ 170 171 Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP); 172 if (!Op) 173 { 174 return_ACPI_STATUS (AE_NO_MEMORY); 175 } 176 177 /* Save the Node for use in AcpiPsParseAml */ 178 179 Op->Common.Node = ScopeNode; 180 181 /* Create and initialize a new parser state */ 182 183 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); 184 if (!WalkState) 185 { 186 Status = AE_NO_MEMORY; 187 goto Cleanup; 188 } 189 190 Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart, 191 AmlLength, NULL, ACPI_IMODE_LOAD_PASS1); 192 if (ACPI_FAILURE (Status)) 193 { 194 AcpiDsDeleteWalkState (WalkState); 195 goto Cleanup; 196 } 197 198 /* Mark this parse as a deferred opcode */ 199 200 WalkState->ParseFlags = ACPI_PARSE_DEFERRED_OP; 201 WalkState->DeferredNode = Node; 202 203 /* Pass1: Parse the entire declaration */ 204 205 Status = AcpiPsParseAml (WalkState); 206 if (ACPI_FAILURE (Status)) 207 { 208 goto Cleanup; 209 } 210 211 /* Get and init the Op created above */ 212 213 Op->Common.Node = Node; 214 AcpiPsDeleteParseTree (Op); 215 216 /* Evaluate the deferred arguments */ 217 218 Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP); 219 if (!Op) 220 { 221 return_ACPI_STATUS (AE_NO_MEMORY); 222 } 223 224 Op->Common.Node = ScopeNode; 225 226 /* Create and initialize a new parser state */ 227 228 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); 229 if (!WalkState) 230 { 231 Status = AE_NO_MEMORY; 232 goto Cleanup; 233 } 234 235 /* Execute the opcode and arguments */ 236 237 Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart, 238 AmlLength, NULL, ACPI_IMODE_EXECUTE); 239 if (ACPI_FAILURE (Status)) 240 { 241 AcpiDsDeleteWalkState (WalkState); 242 goto Cleanup; 243 } 244 245 /* Mark this execution as a deferred opcode */ 246 247 WalkState->DeferredNode = Node; 248 Status = AcpiPsParseAml (WalkState); 249 250 Cleanup: 251 AcpiPsDeleteParseTree (Op); 252 return_ACPI_STATUS (Status); 253 } 254 255 256 /******************************************************************************* 257 * 258 * FUNCTION: AcpiDsGetBufferFieldArguments 259 * 260 * PARAMETERS: ObjDesc - A valid BufferField object 261 * 262 * RETURN: Status. 263 * 264 * DESCRIPTION: Get BufferField Buffer and Index. This implements the late 265 * evaluation of these field attributes. 266 * 267 ******************************************************************************/ 268 269 ACPI_STATUS 270 AcpiDsGetBufferFieldArguments ( 271 ACPI_OPERAND_OBJECT *ObjDesc) 272 { 273 ACPI_OPERAND_OBJECT *ExtraDesc; 274 ACPI_NAMESPACE_NODE *Node; 275 ACPI_STATUS Status; 276 277 278 ACPI_FUNCTION_TRACE_PTR (DsGetBufferFieldArguments, ObjDesc); 279 280 281 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 282 { 283 return_ACPI_STATUS (AE_OK); 284 } 285 286 /* Get the AML pointer (method object) and BufferField node */ 287 288 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); 289 Node = ObjDesc->BufferField.Node; 290 291 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_BUFFER_FIELD, 292 Node, NULL)); 293 294 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", 295 AcpiUtGetNodeName (Node))); 296 297 /* Execute the AML code for the TermArg arguments */ 298 299 Status = AcpiDsExecuteArguments (Node, Node->Parent, 300 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); 301 return_ACPI_STATUS (Status); 302 } 303 304 305 /******************************************************************************* 306 * 307 * FUNCTION: AcpiDsGetBankFieldArguments 308 * 309 * PARAMETERS: ObjDesc - A valid BankField object 310 * 311 * RETURN: Status. 312 * 313 * DESCRIPTION: Get BankField BankValue. This implements the late 314 * evaluation of these field attributes. 315 * 316 ******************************************************************************/ 317 318 ACPI_STATUS 319 AcpiDsGetBankFieldArguments ( 320 ACPI_OPERAND_OBJECT *ObjDesc) 321 { 322 ACPI_OPERAND_OBJECT *ExtraDesc; 323 ACPI_NAMESPACE_NODE *Node; 324 ACPI_STATUS Status; 325 326 327 ACPI_FUNCTION_TRACE_PTR (DsGetBankFieldArguments, ObjDesc); 328 329 330 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 331 { 332 return_ACPI_STATUS (AE_OK); 333 } 334 335 /* Get the AML pointer (method object) and BankField node */ 336 337 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); 338 Node = ObjDesc->BankField.Node; 339 340 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_LOCAL_BANK_FIELD, 341 Node, NULL)); 342 343 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", 344 AcpiUtGetNodeName (Node))); 345 346 /* Execute the AML code for the TermArg arguments */ 347 348 Status = AcpiDsExecuteArguments (Node, Node->Parent, 349 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); 350 return_ACPI_STATUS (Status); 351 } 352 353 354 /******************************************************************************* 355 * 356 * FUNCTION: AcpiDsGetBufferArguments 357 * 358 * PARAMETERS: ObjDesc - A valid Buffer object 359 * 360 * RETURN: Status. 361 * 362 * DESCRIPTION: Get Buffer length and initializer byte list. This implements 363 * the late evaluation of these attributes. 364 * 365 ******************************************************************************/ 366 367 ACPI_STATUS 368 AcpiDsGetBufferArguments ( 369 ACPI_OPERAND_OBJECT *ObjDesc) 370 { 371 ACPI_NAMESPACE_NODE *Node; 372 ACPI_STATUS Status; 373 374 375 ACPI_FUNCTION_TRACE_PTR (DsGetBufferArguments, ObjDesc); 376 377 378 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 379 { 380 return_ACPI_STATUS (AE_OK); 381 } 382 383 /* Get the Buffer node */ 384 385 Node = ObjDesc->Buffer.Node; 386 if (!Node) 387 { 388 ACPI_ERROR ((AE_INFO, 389 "No pointer back to namespace node in buffer object %p", ObjDesc)); 390 return_ACPI_STATUS (AE_AML_INTERNAL); 391 } 392 393 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n")); 394 395 /* Execute the AML code for the TermArg arguments */ 396 397 Status = AcpiDsExecuteArguments (Node, Node, 398 ObjDesc->Buffer.AmlLength, ObjDesc->Buffer.AmlStart); 399 return_ACPI_STATUS (Status); 400 } 401 402 403 /******************************************************************************* 404 * 405 * FUNCTION: AcpiDsGetPackageArguments 406 * 407 * PARAMETERS: ObjDesc - A valid Package object 408 * 409 * RETURN: Status. 410 * 411 * DESCRIPTION: Get Package length and initializer byte list. This implements 412 * the late evaluation of these attributes. 413 * 414 ******************************************************************************/ 415 416 ACPI_STATUS 417 AcpiDsGetPackageArguments ( 418 ACPI_OPERAND_OBJECT *ObjDesc) 419 { 420 ACPI_NAMESPACE_NODE *Node; 421 ACPI_STATUS Status; 422 423 424 ACPI_FUNCTION_TRACE_PTR (DsGetPackageArguments, ObjDesc); 425 426 427 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 428 { 429 return_ACPI_STATUS (AE_OK); 430 } 431 432 /* Get the Package node */ 433 434 Node = ObjDesc->Package.Node; 435 if (!Node) 436 { 437 ACPI_ERROR ((AE_INFO, 438 "No pointer back to namespace node in package %p", ObjDesc)); 439 return_ACPI_STATUS (AE_AML_INTERNAL); 440 } 441 442 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n")); 443 444 /* Execute the AML code for the TermArg arguments */ 445 446 Status = AcpiDsExecuteArguments (Node, Node, 447 ObjDesc->Package.AmlLength, ObjDesc->Package.AmlStart); 448 return_ACPI_STATUS (Status); 449 } 450 451 452 /******************************************************************************* 453 * 454 * FUNCTION: AcpiDsGetRegionArguments 455 * 456 * PARAMETERS: ObjDesc - A valid region object 457 * 458 * RETURN: Status. 459 * 460 * DESCRIPTION: Get region address and length. This implements the late 461 * evaluation of these region attributes. 462 * 463 ******************************************************************************/ 464 465 ACPI_STATUS 466 AcpiDsGetRegionArguments ( 467 ACPI_OPERAND_OBJECT *ObjDesc) 468 { 469 ACPI_NAMESPACE_NODE *Node; 470 ACPI_STATUS Status; 471 ACPI_OPERAND_OBJECT *ExtraDesc; 472 473 474 ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc); 475 476 477 if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID) 478 { 479 return_ACPI_STATUS (AE_OK); 480 } 481 482 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); 483 if (!ExtraDesc) 484 { 485 return_ACPI_STATUS (AE_NOT_EXIST); 486 } 487 488 /* Get the Region node */ 489 490 Node = ObjDesc->Region.Node; 491 492 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_REGION, Node, NULL)); 493 494 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", 495 AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart)); 496 497 /* Execute the argument AML */ 498 499 Status = AcpiDsExecuteArguments (Node, ExtraDesc->Extra.ScopeNode, 500 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); 501 if (ACPI_FAILURE (Status)) 502 { 503 return_ACPI_STATUS (Status); 504 } 505 506 Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId, 507 ObjDesc->Region.Address, ObjDesc->Region.Length, 508 Node); 509 return_ACPI_STATUS (Status); 510 } 511