dsfield.c revision 77424
1/****************************************************************************** 2 * 3 * Module Name: dsfield - Dispatcher field routines 4 * $Revision: 41 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __DSFIELD_C__ 118 119#include "acpi.h" 120#include "amlcode.h" 121#include "acdispat.h" 122#include "acinterp.h" 123#include "acnamesp.h" 124 125 126#define _COMPONENT ACPI_DISPATCHER 127 MODULE_NAME ("dsfield") 128 129 130/* 131 * Field flags: Bits 00 - 03 : AccessType (AnyAcc, ByteAcc, etc.) 132 * 04 : LockRule (1 == Lock) 133 * 05 - 06 : UpdateRule 134 */ 135 136#define FIELD_ACCESS_TYPE_MASK 0x0F 137#define FIELD_LOCK_RULE_MASK 0x10 138#define FIELD_UPDATE_RULE_MASK 0x60 139 140 141/******************************************************************************* 142 * 143 * FUNCTION: AcpiDsCreateField 144 * 145 * PARAMETERS: Op - Op containing the Field definition and args 146 * RegionNode - Object for the containing Operation Region 147 * ` WalkState - Current method state 148 * 149 * RETURN: Status 150 * 151 * DESCRIPTION: Create a new field in the specified operation region 152 * 153 ******************************************************************************/ 154 155ACPI_STATUS 156AcpiDsCreateField ( 157 ACPI_PARSE_OBJECT *Op, 158 ACPI_NAMESPACE_NODE *RegionNode, 159 ACPI_WALK_STATE *WalkState) 160{ 161 ACPI_STATUS Status = AE_AML_ERROR; 162 ACPI_PARSE_OBJECT *Arg; 163 ACPI_NAMESPACE_NODE *Node; 164 UINT8 FieldFlags; 165 UINT32 FieldBitPosition = 0; 166 167 168 FUNCTION_TRACE_PTR ("DsCreateField", Op); 169 170 171 /* First arg is the name of the parent OpRegion */ 172 173 Arg = Op->Value.Arg; 174 if (!RegionNode) 175 { 176 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Value.Name, 177 ACPI_TYPE_REGION, IMODE_EXECUTE, 178 NS_SEARCH_PARENT, WalkState, &RegionNode); 179 if (ACPI_FAILURE (Status)) 180 { 181 return_ACPI_STATUS (Status); 182 } 183 } 184 185 /* Second arg is the field flags */ 186 187 Arg = Arg->Next; 188 FieldFlags = (UINT8) Arg->Value.Integer; 189 190 /* Each remaining arg is a Named Field */ 191 192 Arg = Arg->Next; 193 while (Arg) 194 { 195 switch (Arg->Opcode) 196 { 197 case AML_INT_RESERVEDFIELD_OP: 198 199 FieldBitPosition += Arg->Value.Size; 200 break; 201 202 203 case AML_INT_ACCESSFIELD_OP: 204 205 /* 206 * Get a new AccessType and AccessAttribute for all 207 * entries (until end or another AccessAs keyword) 208 */ 209 FieldFlags = (UINT8) ((FieldFlags & FIELD_ACCESS_TYPE_MASK) || 210 ((UINT8) (Arg->Value.Integer >> 8))); 211 break; 212 213 214 case AML_INT_NAMEDFIELD_OP: 215 216 Status = AcpiNsLookup (WalkState->ScopeInfo, 217 (NATIVE_CHAR *) &((ACPI_PARSE2_OBJECT *)Arg)->Name, 218 INTERNAL_TYPE_REGION_FIELD, IMODE_LOAD_PASS1, 219 NS_NO_UPSEARCH | NS_DONT_OPEN_SCOPE, 220 NULL, &Node); 221 if (ACPI_FAILURE (Status)) 222 { 223 return_ACPI_STATUS (Status); 224 } 225 226 /* 227 * Initialize an object for the new Node that is on 228 * the object stack 229 */ 230 231 Status = AcpiExPrepRegionFieldValue (Node, RegionNode, FieldFlags, 232 FieldBitPosition, Arg->Value.Size); 233 if (ACPI_FAILURE (Status)) 234 { 235 return_ACPI_STATUS (Status); 236 } 237 238 /* Keep track of bit position for *next* field */ 239 240 FieldBitPosition += Arg->Value.Size; 241 break; 242 } 243 244 Arg = Arg->Next; 245 } 246 247 return_ACPI_STATUS (Status); 248} 249 250 251/******************************************************************************* 252 * 253 * FUNCTION: AcpiDsCreateBankField 254 * 255 * PARAMETERS: Op - Op containing the Field definition and args 256 * RegionNode - Object for the containing Operation Region 257 * ` WalkState - Current method state 258 * 259 * RETURN: Status 260 * 261 * DESCRIPTION: Create a new bank field in the specified operation region 262 * 263 ******************************************************************************/ 264 265ACPI_STATUS 266AcpiDsCreateBankField ( 267 ACPI_PARSE_OBJECT *Op, 268 ACPI_NAMESPACE_NODE *RegionNode, 269 ACPI_WALK_STATE *WalkState) 270{ 271 ACPI_STATUS Status = AE_AML_ERROR; 272 ACPI_PARSE_OBJECT *Arg; 273 ACPI_NAMESPACE_NODE *RegisterNode; 274 ACPI_NAMESPACE_NODE *Node; 275 UINT32 BankValue; 276 UINT8 FieldFlags; 277 UINT32 FieldBitPosition = 0; 278 279 280 FUNCTION_TRACE_PTR ("DsCreateBankField", Op); 281 282 283 /* First arg is the name of the parent OpRegion */ 284 285 Arg = Op->Value.Arg; 286 if (!RegionNode) 287 { 288 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Value.Name, 289 ACPI_TYPE_REGION, IMODE_EXECUTE, 290 NS_SEARCH_PARENT, WalkState, &RegionNode); 291 if (ACPI_FAILURE (Status)) 292 { 293 return_ACPI_STATUS (Status); 294 } 295 } 296 297 /* Second arg is the Bank Register */ 298 299 Arg = Arg->Next; 300 301 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Value.String, 302 INTERNAL_TYPE_BANK_FIELD_DEFN, IMODE_LOAD_PASS1, 303 NS_NO_UPSEARCH | NS_DONT_OPEN_SCOPE, 304 NULL, &RegisterNode); 305 if (ACPI_FAILURE (Status)) 306 { 307 return_ACPI_STATUS (Status); 308 } 309 310 /* Third arg is the BankValue */ 311 312 Arg = Arg->Next; 313 BankValue = Arg->Value.Integer; 314 315 316 /* Next arg is the field flags */ 317 318 Arg = Arg->Next; 319 FieldFlags = (UINT8) Arg->Value.Integer; 320 321 /* Each remaining arg is a Named Field */ 322 323 Arg = Arg->Next; 324 while (Arg) 325 { 326 switch (Arg->Opcode) 327 { 328 case AML_INT_RESERVEDFIELD_OP: 329 330 FieldBitPosition += Arg->Value.Size; 331 break; 332 333 334 case AML_INT_ACCESSFIELD_OP: 335 336 /* 337 * Get a new AccessType and AccessAttribute for 338 * all entries (until end or another AccessAs keyword) 339 */ 340 FieldFlags = (UINT8) ((FieldFlags & FIELD_ACCESS_TYPE_MASK) || 341 ((UINT8) (Arg->Value.Integer >> 8))); 342 break; 343 344 345 case AML_INT_NAMEDFIELD_OP: 346 347 Status = AcpiNsLookup (WalkState->ScopeInfo, 348 (NATIVE_CHAR *) &((ACPI_PARSE2_OBJECT *)Arg)->Name, 349 INTERNAL_TYPE_REGION_FIELD, IMODE_LOAD_PASS1, 350 NS_NO_UPSEARCH | NS_DONT_OPEN_SCOPE, 351 NULL, &Node); 352 if (ACPI_FAILURE (Status)) 353 { 354 return_ACPI_STATUS (Status); 355 } 356 357 /* 358 * Initialize an object for the new Node that is on 359 * the object stack 360 */ 361 362 Status = AcpiExPrepBankFieldValue (Node, RegionNode, RegisterNode, 363 BankValue, FieldFlags, FieldBitPosition, 364 Arg->Value.Size); 365 if (ACPI_FAILURE (Status)) 366 { 367 return_ACPI_STATUS (Status); 368 } 369 370 /* Keep track of bit position for the *next* field */ 371 372 FieldBitPosition += Arg->Value.Size; 373 break; 374 375 } 376 377 Arg = Arg->Next; 378 } 379 380 return_ACPI_STATUS (Status); 381} 382 383 384/******************************************************************************* 385 * 386 * FUNCTION: AcpiDsCreateIndexField 387 * 388 * PARAMETERS: Op - Op containing the Field definition and args 389 * RegionNode - Object for the containing Operation Region 390 * ` WalkState - Current method state 391 * 392 * RETURN: Status 393 * 394 * DESCRIPTION: Create a new index field in the specified operation region 395 * 396 ******************************************************************************/ 397 398ACPI_STATUS 399AcpiDsCreateIndexField ( 400 ACPI_PARSE_OBJECT *Op, 401 ACPI_NAMESPACE_NODE *RegionNode, 402 ACPI_WALK_STATE *WalkState) 403{ 404 ACPI_STATUS Status; 405 ACPI_PARSE_OBJECT *Arg; 406 ACPI_NAMESPACE_NODE *Node; 407 ACPI_NAMESPACE_NODE *IndexRegisterNode; 408 ACPI_NAMESPACE_NODE *DataRegisterNode; 409 UINT8 FieldFlags; 410 UINT32 FieldBitPosition = 0; 411 412 413 FUNCTION_TRACE_PTR ("DsCreateIndexField", Op); 414 415 416 Arg = Op->Value.Arg; 417 418 /* First arg is the name of the Index register */ 419 420 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Value.String, 421 ACPI_TYPE_ANY, IMODE_LOAD_PASS1, 422 NS_NO_UPSEARCH | NS_DONT_OPEN_SCOPE, 423 NULL, &IndexRegisterNode); 424 if (ACPI_FAILURE (Status)) 425 { 426 return_ACPI_STATUS (Status); 427 } 428 429 /* Second arg is the data register */ 430 431 Arg = Arg->Next; 432 433 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Value.String, 434 INTERNAL_TYPE_INDEX_FIELD_DEFN, IMODE_LOAD_PASS1, 435 NS_NO_UPSEARCH | NS_DONT_OPEN_SCOPE, 436 NULL, &DataRegisterNode); 437 if (ACPI_FAILURE (Status)) 438 { 439 return_ACPI_STATUS (Status); 440 } 441 442 443 /* Next arg is the field flags */ 444 445 Arg = Arg->Next; 446 FieldFlags = (UINT8) Arg->Value.Integer; 447 448 449 /* Each remaining arg is a Named Field */ 450 451 Arg = Arg->Next; 452 while (Arg) 453 { 454 switch (Arg->Opcode) 455 { 456 case AML_INT_RESERVEDFIELD_OP: 457 458 FieldBitPosition += Arg->Value.Size; 459 break; 460 461 462 case AML_INT_ACCESSFIELD_OP: 463 464 /* 465 * Get a new AccessType and AccessAttribute for all 466 * entries (until end or another AccessAs keyword) 467 */ 468 FieldFlags = (UINT8) ((FieldFlags & FIELD_ACCESS_TYPE_MASK) || 469 ((UINT8) (Arg->Value.Integer >> 8))); 470 break; 471 472 473 case AML_INT_NAMEDFIELD_OP: 474 475 Status = AcpiNsLookup (WalkState->ScopeInfo, 476 (NATIVE_CHAR *) &((ACPI_PARSE2_OBJECT *)Arg)->Name, 477 INTERNAL_TYPE_INDEX_FIELD, IMODE_LOAD_PASS1, 478 NS_NO_UPSEARCH | NS_DONT_OPEN_SCOPE, 479 NULL, &Node); 480 if (ACPI_FAILURE (Status)) 481 { 482 return_ACPI_STATUS (Status); 483 } 484 485 /* 486 * Initialize an object for the new Node that is on 487 * the object stack 488 */ 489 490 Status = AcpiExPrepIndexFieldValue (Node, IndexRegisterNode, 491 DataRegisterNode, FieldFlags, 492 FieldBitPosition, Arg->Value.Size); 493 if (ACPI_FAILURE (Status)) 494 { 495 return_ACPI_STATUS (Status); 496 } 497 498 /* Keep track of bit position for the *next* field */ 499 500 FieldBitPosition += Arg->Value.Size; 501 break; 502 503 504 default: 505 506 DEBUG_PRINTP (ACPI_ERROR, ("Invalid opcode in field list: %X\n", 507 Arg->Opcode)); 508 Status = AE_AML_ERROR; 509 break; 510 } 511 512 Arg = Arg->Next; 513 } 514 515 return_ACPI_STATUS (Status); 516} 517 518 519