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 - 2016, 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 #include "acpi.h" 118 #include "accommon.h" 119 #include "acparser.h" 120 #include "amlcode.h" 121 #include "acdispat.h" 122 #include "acnamesp.h" 123 124 #define _COMPONENT ACPI_DISPATCHER 125 ACPI_MODULE_NAME ("dsargs") 126 127 /* Local prototypes */ 128 129 static ACPI_STATUS 130 AcpiDsExecuteArguments ( 131 ACPI_NAMESPACE_NODE *Node, 132 ACPI_NAMESPACE_NODE *ScopeNode, 133 UINT32 AmlLength, 134 UINT8 *AmlStart); 135 136 137 /******************************************************************************* 138 * 139 * FUNCTION: AcpiDsExecuteArguments 140 * 141 * PARAMETERS: Node - Object NS node 142 * ScopeNode - Parent NS node 143 * AmlLength - Length of executable AML 144 * AmlStart - Pointer to the AML 145 * 146 * RETURN: Status. 147 * 148 * DESCRIPTION: Late (deferred) execution of region or field arguments 149 * 150 ******************************************************************************/ 151 152 static ACPI_STATUS 153 AcpiDsExecuteArguments ( 154 ACPI_NAMESPACE_NODE *Node, 155 ACPI_NAMESPACE_NODE *ScopeNode, 156 UINT32 AmlLength, 157 UINT8 *AmlStart) 158 { 159 ACPI_STATUS Status; 160 ACPI_PARSE_OBJECT *Op; 161 ACPI_WALK_STATE *WalkState; 162 163 164 ACPI_FUNCTION_TRACE (DsExecuteArguments); 165 166 167 /* Allocate a new parser op to be the root of the parsed tree */ 168 169 Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP, AmlStart); 170 if (!Op) 171 { 172 return_ACPI_STATUS (AE_NO_MEMORY); 173 } 174 175 /* Save the Node for use in AcpiPsParseAml */ 176 177 Op->Common.Node = ScopeNode; 178 179 /* Create and initialize a new parser state */ 180 181 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); 182 if (!WalkState) 183 { 184 Status = AE_NO_MEMORY; 185 goto Cleanup; 186 } 187 188 Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart, 189 AmlLength, NULL, ACPI_IMODE_LOAD_PASS1); 190 if (ACPI_FAILURE (Status)) 191 { 192 AcpiDsDeleteWalkState (WalkState); 193 goto Cleanup; 194 } 195 196 /* Mark this parse as a deferred opcode */ 197 198 WalkState->ParseFlags = ACPI_PARSE_DEFERRED_OP; 199 WalkState->DeferredNode = Node; 200 201 /* Pass1: Parse the entire declaration */ 202 203 Status = AcpiPsParseAml (WalkState); 204 if (ACPI_FAILURE (Status)) 205 { 206 goto Cleanup; 207 } 208 209 /* Get and init the Op created above */ 210 211 Op->Common.Node = Node; 212 AcpiPsDeleteParseTree (Op); 213 214 /* Evaluate the deferred arguments */ 215 216 Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP, AmlStart); 217 if (!Op) 218 { 219 return_ACPI_STATUS (AE_NO_MEMORY); 220 } 221 222 Op->Common.Node = ScopeNode; 223 224 /* Create and initialize a new parser state */ 225 226 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); 227 if (!WalkState) 228 { 229 Status = AE_NO_MEMORY; 230 goto Cleanup; 231 } 232 233 /* Execute the opcode and arguments */ 234 235 Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart, 236 AmlLength, NULL, ACPI_IMODE_EXECUTE); 237 if (ACPI_FAILURE (Status)) 238 { 239 AcpiDsDeleteWalkState (WalkState); 240 goto Cleanup; 241 } 242 243 /* Mark this execution as a deferred opcode */ 244 245 WalkState->DeferredNode = Node; 246 Status = AcpiPsParseAml (WalkState); 247 248 Cleanup: 249 AcpiPsDeleteParseTree (Op); 250 return_ACPI_STATUS (Status); 251 } 252 253 254 /******************************************************************************* 255 * 256 * FUNCTION: AcpiDsGetBufferFieldArguments 257 * 258 * PARAMETERS: ObjDesc - A valid BufferField object 259 * 260 * RETURN: Status. 261 * 262 * DESCRIPTION: Get BufferField Buffer and Index. This implements the late 263 * evaluation of these field attributes. 264 * 265 ******************************************************************************/ 266 267 ACPI_STATUS 268 AcpiDsGetBufferFieldArguments ( 269 ACPI_OPERAND_OBJECT *ObjDesc) 270 { 271 ACPI_OPERAND_OBJECT *ExtraDesc; 272 ACPI_NAMESPACE_NODE *Node; 273 ACPI_STATUS Status; 274 275 276 ACPI_FUNCTION_TRACE_PTR (DsGetBufferFieldArguments, ObjDesc); 277 278 279 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 280 { 281 return_ACPI_STATUS (AE_OK); 282 } 283 284 /* Get the AML pointer (method object) and BufferField node */ 285 286 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); 287 Node = ObjDesc->BufferField.Node; 288 289 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname ( 290 ACPI_TYPE_BUFFER_FIELD, Node, NULL)); 291 292 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", 293 AcpiUtGetNodeName (Node))); 294 295 /* Execute the AML code for the TermArg arguments */ 296 297 Status = AcpiDsExecuteArguments (Node, Node->Parent, 298 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); 299 return_ACPI_STATUS (Status); 300 } 301 302 303 /******************************************************************************* 304 * 305 * FUNCTION: AcpiDsGetBankFieldArguments 306 * 307 * PARAMETERS: ObjDesc - A valid BankField object 308 * 309 * RETURN: Status. 310 * 311 * DESCRIPTION: Get BankField BankValue. This implements the late 312 * evaluation of these field attributes. 313 * 314 ******************************************************************************/ 315 316 ACPI_STATUS 317 AcpiDsGetBankFieldArguments ( 318 ACPI_OPERAND_OBJECT *ObjDesc) 319 { 320 ACPI_OPERAND_OBJECT *ExtraDesc; 321 ACPI_NAMESPACE_NODE *Node; 322 ACPI_STATUS Status; 323 324 325 ACPI_FUNCTION_TRACE_PTR (DsGetBankFieldArguments, ObjDesc); 326 327 328 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 329 { 330 return_ACPI_STATUS (AE_OK); 331 } 332 333 /* Get the AML pointer (method object) and BankField node */ 334 335 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); 336 Node = ObjDesc->BankField.Node; 337 338 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname ( 339 ACPI_TYPE_LOCAL_BANK_FIELD, Node, NULL)); 340 341 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", 342 AcpiUtGetNodeName (Node))); 343 344 /* Execute the AML code for the TermArg arguments */ 345 346 Status = AcpiDsExecuteArguments (Node, Node->Parent, 347 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); 348 return_ACPI_STATUS (Status); 349 } 350 351 352 /******************************************************************************* 353 * 354 * FUNCTION: AcpiDsGetBufferArguments 355 * 356 * PARAMETERS: ObjDesc - A valid Buffer object 357 * 358 * RETURN: Status. 359 * 360 * DESCRIPTION: Get Buffer length and initializer byte list. This implements 361 * the late evaluation of these attributes. 362 * 363 ******************************************************************************/ 364 365 ACPI_STATUS 366 AcpiDsGetBufferArguments ( 367 ACPI_OPERAND_OBJECT *ObjDesc) 368 { 369 ACPI_NAMESPACE_NODE *Node; 370 ACPI_STATUS Status; 371 372 373 ACPI_FUNCTION_TRACE_PTR (DsGetBufferArguments, ObjDesc); 374 375 376 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 377 { 378 return_ACPI_STATUS (AE_OK); 379 } 380 381 /* Get the Buffer node */ 382 383 Node = ObjDesc->Buffer.Node; 384 if (!Node) 385 { 386 ACPI_ERROR ((AE_INFO, 387 "No pointer back to namespace node in buffer object %p", 388 ObjDesc)); 389 return_ACPI_STATUS (AE_AML_INTERNAL); 390 } 391 392 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n")); 393 394 /* Execute the AML code for the TermArg arguments */ 395 396 Status = AcpiDsExecuteArguments (Node, Node, 397 ObjDesc->Buffer.AmlLength, ObjDesc->Buffer.AmlStart); 398 return_ACPI_STATUS (Status); 399 } 400 401 402 /******************************************************************************* 403 * 404 * FUNCTION: AcpiDsGetPackageArguments 405 * 406 * PARAMETERS: ObjDesc - A valid Package object 407 * 408 * RETURN: Status. 409 * 410 * DESCRIPTION: Get Package length and initializer byte list. This implements 411 * the late evaluation of these attributes. 412 * 413 ******************************************************************************/ 414 415 ACPI_STATUS 416 AcpiDsGetPackageArguments ( 417 ACPI_OPERAND_OBJECT *ObjDesc) 418 { 419 ACPI_NAMESPACE_NODE *Node; 420 ACPI_STATUS Status; 421 422 423 ACPI_FUNCTION_TRACE_PTR (DsGetPackageArguments, ObjDesc); 424 425 426 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 427 { 428 return_ACPI_STATUS (AE_OK); 429 } 430 431 /* Get the Package node */ 432 433 Node = ObjDesc->Package.Node; 434 if (!Node) 435 { 436 ACPI_ERROR ((AE_INFO, 437 "No pointer back to namespace node in package %p", ObjDesc)); 438 return_ACPI_STATUS (AE_AML_INTERNAL); 439 } 440 441 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n")); 442 443 /* Execute the AML code for the TermArg arguments */ 444 445 Status = AcpiDsExecuteArguments (Node, Node, 446 ObjDesc->Package.AmlLength, ObjDesc->Package.AmlStart); 447 return_ACPI_STATUS (Status); 448 } 449 450 451 /******************************************************************************* 452 * 453 * FUNCTION: AcpiDsGetRegionArguments 454 * 455 * PARAMETERS: ObjDesc - A valid region object 456 * 457 * RETURN: Status. 458 * 459 * DESCRIPTION: Get region address and length. This implements the late 460 * evaluation of these region attributes. 461 * 462 ******************************************************************************/ 463 464 ACPI_STATUS 465 AcpiDsGetRegionArguments ( 466 ACPI_OPERAND_OBJECT *ObjDesc) 467 { 468 ACPI_NAMESPACE_NODE *Node; 469 ACPI_STATUS Status; 470 ACPI_OPERAND_OBJECT *ExtraDesc; 471 472 473 ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc); 474 475 476 if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID) 477 { 478 return_ACPI_STATUS (AE_OK); 479 } 480 481 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); 482 if (!ExtraDesc) 483 { 484 return_ACPI_STATUS (AE_NOT_EXIST); 485 } 486 487 /* Get the Region node */ 488 489 Node = ObjDesc->Region.Node; 490 491 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname ( 492 ACPI_TYPE_REGION, Node, NULL)); 493 494 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 495 "[%4.4s] OpRegion Arg Init at AML %p\n", 496 AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart)); 497 498 /* Execute the argument AML */ 499 500 Status = AcpiDsExecuteArguments (Node, ExtraDesc->Extra.ScopeNode, 501 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); 502 if (ACPI_FAILURE (Status)) 503 { 504 return_ACPI_STATUS (Status); 505 } 506 507 Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId, 508 ObjDesc->Region.Address, ObjDesc->Region.Length, Node); 509 return_ACPI_STATUS (Status); 510 } 511