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 88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90 * PARTICULAR PURPOSE. 91 * 92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99 * LIMITED REMEDY. 100 * 101 * 4.3. Licensee shall not export, either directly or indirectly, any of this 102 * software or system incorporating such software without first obtaining any 103 * required license or other approval from the U. S. Department of Commerce or 104 * any other agency or department of the United States Government. In the 105 * event Licensee exports any such software from the United States or 106 * re-exports any such software from a foreign destination, Licensee shall 107 * ensure that the distribution and export/re-export of the software is in 108 * compliance with all laws, regulations, orders, or other restrictions of the 109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110 * any of its subsidiaries will export/re-export any technical data, process, 111 * software, or service, directly or indirectly, to any country for which the 112 * United States government or any agency thereof requires an export license, 113 * other governmental approval, or letter of assurance, without first obtaining 114 * such license, approval or letter. 115 * 116 *****************************************************************************/ 117 118#define __EXCONFIG_C__ 119 120#include "acpi.h" 121#include "acinterp.h" 122#include "amlcode.h" 123#include "acnamesp.h" 124#include "acevents.h" 125#include "actables.h" 126 127 128#define _COMPONENT ACPI_EXECUTER 129 ACPI_MODULE_NAME ("exconfig") 130 131 132/******************************************************************************* 133 * 134 * FUNCTION: AcpiExAddTable 135 * 136 * PARAMETERS: Table - Pointer to raw table 137 * ParentNode - Where to load the table (scope) 138 * DdbHandle - Where to return the table handle. 139 * 140 * RETURN: Status 141 * 142 * DESCRIPTION: Common function to Install and Load an ACPI table with a 143 * returned table handle. 144 * 145 ******************************************************************************/ 146 147ACPI_STATUS 148AcpiExAddTable ( 149 ACPI_TABLE_HEADER *Table, 150 ACPI_NAMESPACE_NODE *ParentNode, 151 ACPI_OPERAND_OBJECT **DdbHandle) 152{ 153 ACPI_STATUS Status; 154 ACPI_TABLE_DESC TableInfo; 155 ACPI_OPERAND_OBJECT *ObjDesc; 156 157 158 ACPI_FUNCTION_TRACE ("ExAddTable"); 159 160 161 /* Create an object to be the table handle */ 162 163 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE); 164 if (!ObjDesc) 165 { 166 return_ACPI_STATUS (AE_NO_MEMORY); 167 } 168 169 /* Install the new table into the local data structures */ 170 171 ACPI_MEMSET (&TableInfo, 0, sizeof (ACPI_TABLE_DESC)); 172 173 TableInfo.Type = 5; 174 TableInfo.Pointer = Table; 175 TableInfo.Length = (ACPI_SIZE) Table->Length; 176 TableInfo.Allocation = ACPI_MEM_ALLOCATED; 177 178 Status = AcpiTbInstallTable (&TableInfo); 179 if (ACPI_FAILURE (Status)) 180 { 181 goto Cleanup; 182 } 183 184 /* Add the table to the namespace */ 185 186 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, ParentNode); 187 if (ACPI_FAILURE (Status)) 188 { 189 /* Uninstall table on error */ 190 191 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc); 192 goto Cleanup; 193 } 194 195 /* Init the table handle */ 196 197 ObjDesc->Reference.Opcode = AML_LOAD_OP; 198 ObjDesc->Reference.Object = TableInfo.InstalledDesc; 199 *DdbHandle = ObjDesc; 200 return_ACPI_STATUS (AE_OK); 201 202 203Cleanup: 204 AcpiUtRemoveReference (ObjDesc); 205 return_ACPI_STATUS (Status); 206} 207 208 209/******************************************************************************* 210 * 211 * FUNCTION: AcpiExLoadTableOp 212 * 213 * PARAMETERS: WalkState - Current state with operands 214 * ReturnDesc - Where to store the return object 215 * 216 * RETURN: Status 217 * 218 * DESCRIPTION: Load an ACPI table 219 * 220 ******************************************************************************/ 221 222ACPI_STATUS 223AcpiExLoadTableOp ( 224 ACPI_WALK_STATE *WalkState, 225 ACPI_OPERAND_OBJECT **ReturnDesc) 226{ 227 ACPI_STATUS Status; 228 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 229 ACPI_TABLE_HEADER *Table; 230 ACPI_NAMESPACE_NODE *ParentNode; 231 ACPI_NAMESPACE_NODE *StartNode; 232 ACPI_NAMESPACE_NODE *ParameterNode = NULL; 233 ACPI_OPERAND_OBJECT *DdbHandle; 234 235 236 ACPI_FUNCTION_TRACE ("ExLoadTableOp"); 237 238 239#if 0 240 /* 241 * Make sure that the signature does not match one of the tables that 242 * is already loaded. 243 */ 244 Status = AcpiTbMatchSignature (Operand[0]->String.Pointer, NULL); 245 if (Status == AE_OK) 246 { 247 /* Signature matched -- don't allow override */ 248 249 return_ACPI_STATUS (AE_ALREADY_EXISTS); 250 } 251#endif 252 253 /* Find the ACPI table */ 254 255 Status = AcpiTbFindTable (Operand[0]->String.Pointer, 256 Operand[1]->String.Pointer, 257 Operand[2]->String.Pointer, &Table); 258 if (ACPI_FAILURE (Status)) 259 { 260 if (Status != AE_NOT_FOUND) 261 { 262 return_ACPI_STATUS (Status); 263 } 264 265 /* Table not found, return an Integer=0 and AE_OK */ 266 267 DdbHandle = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); 268 if (!DdbHandle) 269 { 270 return_ACPI_STATUS (AE_NO_MEMORY); 271 } 272 273 DdbHandle->Integer.Value = 0; 274 *ReturnDesc = DdbHandle; 275 276 return_ACPI_STATUS (AE_OK); 277 } 278 279 /* Default nodes */ 280 281 StartNode = WalkState->ScopeInfo->Scope.Node; 282 ParentNode = AcpiGbl_RootNode; 283 284 /* RootPath (optional parameter) */ 285 286 if (Operand[3]->String.Length > 0) 287 { 288 /* 289 * Find the node referenced by the RootPathString. This is the 290 * location within the namespace where the table will be loaded. 291 */ 292 Status = AcpiNsGetNodeByPath (Operand[3]->String.Pointer, StartNode, 293 ACPI_NS_SEARCH_PARENT, &ParentNode); 294 if (ACPI_FAILURE (Status)) 295 { 296 return_ACPI_STATUS (Status); 297 } 298 } 299 300 /* ParameterPath (optional parameter) */ 301 302 if (Operand[4]->String.Length > 0) 303 { 304 if ((Operand[4]->String.Pointer[0] != '\\') && 305 (Operand[4]->String.Pointer[0] != '^')) 306 { 307 /* 308 * Path is not absolute, so it will be relative to the node 309 * referenced by the RootPathString (or the NS root if omitted) 310 */ 311 StartNode = ParentNode; 312 } 313 314 /* 315 * Find the node referenced by the ParameterPathString 316 */ 317 Status = AcpiNsGetNodeByPath (Operand[4]->String.Pointer, StartNode, 318 ACPI_NS_SEARCH_PARENT, &ParameterNode); 319 if (ACPI_FAILURE (Status)) 320 { 321 return_ACPI_STATUS (Status); 322 } 323 } 324 325 /* Load the table into the namespace */ 326 327 Status = AcpiExAddTable (Table, ParentNode, &DdbHandle); 328 if (ACPI_FAILURE (Status)) 329 { 330 return_ACPI_STATUS (Status); 331 } 332 333 /* Parameter Data (optional) */ 334 335 if (ParameterNode) 336 { 337 /* Store the parameter data into the optional parameter object */ 338 339 Status = AcpiExStore (Operand[5], ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode), 340 WalkState); 341 if (ACPI_FAILURE (Status)) 342 { 343 (void) AcpiExUnloadTable (DdbHandle); 344 return_ACPI_STATUS (Status); 345 } 346 } 347 348 *ReturnDesc = DdbHandle; 349 return_ACPI_STATUS (Status); 350} 351 352 353/******************************************************************************* 354 * 355 * FUNCTION: AcpiExLoadOp 356 * 357 * PARAMETERS: ObjDesc - Region or Field where the table will be 358 * obtained 359 * Target - Where a handle to the table will be stored 360 * WalkState - Current state 361 * 362 * RETURN: Status 363 * 364 * DESCRIPTION: Load an ACPI table from a field or operation region 365 * 366 ******************************************************************************/ 367 368ACPI_STATUS 369AcpiExLoadOp ( 370 ACPI_OPERAND_OBJECT *ObjDesc, 371 ACPI_OPERAND_OBJECT *Target, 372 ACPI_WALK_STATE *WalkState) 373{ 374 ACPI_STATUS Status; 375 ACPI_OPERAND_OBJECT *DdbHandle; 376 ACPI_OPERAND_OBJECT *BufferDesc = NULL; 377 ACPI_TABLE_HEADER *TablePtr = NULL; 378 UINT8 *TableDataPtr; 379 ACPI_TABLE_HEADER TableHeader; 380 UINT32 i; 381 382 ACPI_FUNCTION_TRACE ("ExLoadOp"); 383 384 385 /* Object can be either an OpRegion or a Field */ 386 387 switch (ACPI_GET_OBJECT_TYPE (ObjDesc)) 388 { 389 case ACPI_TYPE_REGION: 390 391 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n", 392 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc))); 393 394 /* Get the table header */ 395 396 TableHeader.Length = 0; 397 for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++) 398 { 399 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ, 400 (ACPI_PHYSICAL_ADDRESS) i, 8, 401 ((UINT8 *) &TableHeader) + i); 402 if (ACPI_FAILURE (Status)) 403 { 404 return_ACPI_STATUS (Status); 405 } 406 } 407 408 /* Allocate a buffer for the entire table */ 409 410 TablePtr = ACPI_MEM_ALLOCATE (TableHeader.Length); 411 if (!TablePtr) 412 { 413 return_ACPI_STATUS (AE_NO_MEMORY); 414 } 415 416 /* Copy the header to the buffer */ 417 418 ACPI_MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER)); 419 TableDataPtr = ACPI_PTR_ADD (UINT8, TablePtr, sizeof (ACPI_TABLE_HEADER)); 420 421 /* Get the table from the op region */ 422 423 for (i = 0; i < TableHeader.Length; i++) 424 { 425 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ, 426 (ACPI_PHYSICAL_ADDRESS) i, 8, 427 ((UINT8 *) TableDataPtr + i)); 428 if (ACPI_FAILURE (Status)) 429 { 430 goto Cleanup; 431 } 432 } 433 break; 434 435 436 case ACPI_TYPE_LOCAL_REGION_FIELD: 437 case ACPI_TYPE_LOCAL_BANK_FIELD: 438 case ACPI_TYPE_LOCAL_INDEX_FIELD: 439 440 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n", 441 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc))); 442 443 /* 444 * The length of the field must be at least as large as the table. 445 * Read the entire field and thus the entire table. Buffer is 446 * allocated during the read. 447 */ 448 Status = AcpiExReadDataFromField (WalkState, ObjDesc, &BufferDesc); 449 if (ACPI_FAILURE (Status)) 450 { 451 goto Cleanup; 452 } 453 454 TablePtr = ACPI_CAST_PTR (ACPI_TABLE_HEADER, BufferDesc->Buffer.Pointer); 455 break; 456 457 458 default: 459 return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 460 } 461 462 /* The table must be either an SSDT or a PSDT */ 463 464 if ((!ACPI_STRNCMP (TablePtr->Signature, 465 AcpiGbl_TableData[ACPI_TABLE_PSDT].Signature, 466 AcpiGbl_TableData[ACPI_TABLE_PSDT].SigLength)) && 467 (!ACPI_STRNCMP (TablePtr->Signature, 468 AcpiGbl_TableData[ACPI_TABLE_SSDT].Signature, 469 AcpiGbl_TableData[ACPI_TABLE_SSDT].SigLength))) 470 { 471 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 472 "Table has invalid signature [%4.4s], must be SSDT or PSDT\n", 473 TablePtr->Signature)); 474 Status = AE_BAD_SIGNATURE; 475 goto Cleanup; 476 } 477 478 /* Install the new table into the local data structures */ 479 480 Status = AcpiExAddTable (TablePtr, AcpiGbl_RootNode, &DdbHandle); 481 if (ACPI_FAILURE (Status)) 482 { 483 goto Cleanup; 484 } 485 486 /* Store the DdbHandle into the Target operand */ 487 488 Status = AcpiExStore (DdbHandle, Target, WalkState); 489 if (ACPI_FAILURE (Status)) 490 { 491 (void) AcpiExUnloadTable (DdbHandle); 492 } 493 494 return_ACPI_STATUS (Status); 495 496 497Cleanup: 498 499 if (BufferDesc) 500 { 501 AcpiUtRemoveReference (BufferDesc); 502 } 503 else 504 { 505 ACPI_MEM_FREE (TablePtr); 506 } 507 return_ACPI_STATUS (Status); 508} 509 510 511/******************************************************************************* 512 * 513 * FUNCTION: AcpiExUnloadTable 514 * 515 * PARAMETERS: DdbHandle - Handle to a previously loaded table 516 * 517 * RETURN: Status 518 * 519 * DESCRIPTION: Unload an ACPI table 520 * 521 ******************************************************************************/ 522 523ACPI_STATUS 524AcpiExUnloadTable ( 525 ACPI_OPERAND_OBJECT *DdbHandle) 526{ 527 ACPI_STATUS Status = AE_OK; 528 ACPI_OPERAND_OBJECT *TableDesc = DdbHandle; 529 ACPI_TABLE_DESC *TableInfo; 530 531 532 ACPI_FUNCTION_TRACE ("ExUnloadTable"); 533 534 535 /* 536 * Validate the handle 537 * Although the handle is partially validated in AcpiExReconfiguration(), 538 * when it calls AcpiExResolveOperands(), the handle is more completely 539 * validated here. 540 */ 541 if ((!DdbHandle) || 542 (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) || 543 (ACPI_GET_OBJECT_TYPE (DdbHandle) != ACPI_TYPE_LOCAL_REFERENCE)) 544 { 545 return_ACPI_STATUS (AE_BAD_PARAMETER); 546 } 547 548 /* Get the actual table descriptor from the DdbHandle */ 549 550 TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object; 551 552 /* 553 * Delete the entire namespace under this table Node 554 * (Offset contains the TableId) 555 */ 556 AcpiNsDeleteNamespaceByOwner (TableInfo->TableId); 557 558 /* Delete the table itself */ 559 560 (void) AcpiTbUninstallTable (TableInfo->InstalledDesc); 561 562 /* Delete the table descriptor (DdbHandle) */ 563 564 AcpiUtRemoveReference (TableDesc); 565 return_ACPI_STATUS (Status); 566} 567
| 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 88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90 * PARTICULAR PURPOSE. 91 * 92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99 * LIMITED REMEDY. 100 * 101 * 4.3. Licensee shall not export, either directly or indirectly, any of this 102 * software or system incorporating such software without first obtaining any 103 * required license or other approval from the U. S. Department of Commerce or 104 * any other agency or department of the United States Government. In the 105 * event Licensee exports any such software from the United States or 106 * re-exports any such software from a foreign destination, Licensee shall 107 * ensure that the distribution and export/re-export of the software is in 108 * compliance with all laws, regulations, orders, or other restrictions of the 109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110 * any of its subsidiaries will export/re-export any technical data, process, 111 * software, or service, directly or indirectly, to any country for which the 112 * United States government or any agency thereof requires an export license, 113 * other governmental approval, or letter of assurance, without first obtaining 114 * such license, approval or letter. 115 * 116 *****************************************************************************/ 117 118#define __EXCONFIG_C__ 119 120#include "acpi.h" 121#include "acinterp.h" 122#include "amlcode.h" 123#include "acnamesp.h" 124#include "acevents.h" 125#include "actables.h" 126 127 128#define _COMPONENT ACPI_EXECUTER 129 ACPI_MODULE_NAME ("exconfig") 130 131 132/******************************************************************************* 133 * 134 * FUNCTION: AcpiExAddTable 135 * 136 * PARAMETERS: Table - Pointer to raw table 137 * ParentNode - Where to load the table (scope) 138 * DdbHandle - Where to return the table handle. 139 * 140 * RETURN: Status 141 * 142 * DESCRIPTION: Common function to Install and Load an ACPI table with a 143 * returned table handle. 144 * 145 ******************************************************************************/ 146 147ACPI_STATUS 148AcpiExAddTable ( 149 ACPI_TABLE_HEADER *Table, 150 ACPI_NAMESPACE_NODE *ParentNode, 151 ACPI_OPERAND_OBJECT **DdbHandle) 152{ 153 ACPI_STATUS Status; 154 ACPI_TABLE_DESC TableInfo; 155 ACPI_OPERAND_OBJECT *ObjDesc; 156 157 158 ACPI_FUNCTION_TRACE ("ExAddTable"); 159 160 161 /* Create an object to be the table handle */ 162 163 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE); 164 if (!ObjDesc) 165 { 166 return_ACPI_STATUS (AE_NO_MEMORY); 167 } 168 169 /* Install the new table into the local data structures */ 170 171 ACPI_MEMSET (&TableInfo, 0, sizeof (ACPI_TABLE_DESC)); 172 173 TableInfo.Type = 5; 174 TableInfo.Pointer = Table; 175 TableInfo.Length = (ACPI_SIZE) Table->Length; 176 TableInfo.Allocation = ACPI_MEM_ALLOCATED; 177 178 Status = AcpiTbInstallTable (&TableInfo); 179 if (ACPI_FAILURE (Status)) 180 { 181 goto Cleanup; 182 } 183 184 /* Add the table to the namespace */ 185 186 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, ParentNode); 187 if (ACPI_FAILURE (Status)) 188 { 189 /* Uninstall table on error */ 190 191 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc); 192 goto Cleanup; 193 } 194 195 /* Init the table handle */ 196 197 ObjDesc->Reference.Opcode = AML_LOAD_OP; 198 ObjDesc->Reference.Object = TableInfo.InstalledDesc; 199 *DdbHandle = ObjDesc; 200 return_ACPI_STATUS (AE_OK); 201 202 203Cleanup: 204 AcpiUtRemoveReference (ObjDesc); 205 return_ACPI_STATUS (Status); 206} 207 208 209/******************************************************************************* 210 * 211 * FUNCTION: AcpiExLoadTableOp 212 * 213 * PARAMETERS: WalkState - Current state with operands 214 * ReturnDesc - Where to store the return object 215 * 216 * RETURN: Status 217 * 218 * DESCRIPTION: Load an ACPI table 219 * 220 ******************************************************************************/ 221 222ACPI_STATUS 223AcpiExLoadTableOp ( 224 ACPI_WALK_STATE *WalkState, 225 ACPI_OPERAND_OBJECT **ReturnDesc) 226{ 227 ACPI_STATUS Status; 228 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 229 ACPI_TABLE_HEADER *Table; 230 ACPI_NAMESPACE_NODE *ParentNode; 231 ACPI_NAMESPACE_NODE *StartNode; 232 ACPI_NAMESPACE_NODE *ParameterNode = NULL; 233 ACPI_OPERAND_OBJECT *DdbHandle; 234 235 236 ACPI_FUNCTION_TRACE ("ExLoadTableOp"); 237 238 239#if 0 240 /* 241 * Make sure that the signature does not match one of the tables that 242 * is already loaded. 243 */ 244 Status = AcpiTbMatchSignature (Operand[0]->String.Pointer, NULL); 245 if (Status == AE_OK) 246 { 247 /* Signature matched -- don't allow override */ 248 249 return_ACPI_STATUS (AE_ALREADY_EXISTS); 250 } 251#endif 252 253 /* Find the ACPI table */ 254 255 Status = AcpiTbFindTable (Operand[0]->String.Pointer, 256 Operand[1]->String.Pointer, 257 Operand[2]->String.Pointer, &Table); 258 if (ACPI_FAILURE (Status)) 259 { 260 if (Status != AE_NOT_FOUND) 261 { 262 return_ACPI_STATUS (Status); 263 } 264 265 /* Table not found, return an Integer=0 and AE_OK */ 266 267 DdbHandle = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); 268 if (!DdbHandle) 269 { 270 return_ACPI_STATUS (AE_NO_MEMORY); 271 } 272 273 DdbHandle->Integer.Value = 0; 274 *ReturnDesc = DdbHandle; 275 276 return_ACPI_STATUS (AE_OK); 277 } 278 279 /* Default nodes */ 280 281 StartNode = WalkState->ScopeInfo->Scope.Node; 282 ParentNode = AcpiGbl_RootNode; 283 284 /* RootPath (optional parameter) */ 285 286 if (Operand[3]->String.Length > 0) 287 { 288 /* 289 * Find the node referenced by the RootPathString. This is the 290 * location within the namespace where the table will be loaded. 291 */ 292 Status = AcpiNsGetNodeByPath (Operand[3]->String.Pointer, StartNode, 293 ACPI_NS_SEARCH_PARENT, &ParentNode); 294 if (ACPI_FAILURE (Status)) 295 { 296 return_ACPI_STATUS (Status); 297 } 298 } 299 300 /* ParameterPath (optional parameter) */ 301 302 if (Operand[4]->String.Length > 0) 303 { 304 if ((Operand[4]->String.Pointer[0] != '\\') && 305 (Operand[4]->String.Pointer[0] != '^')) 306 { 307 /* 308 * Path is not absolute, so it will be relative to the node 309 * referenced by the RootPathString (or the NS root if omitted) 310 */ 311 StartNode = ParentNode; 312 } 313 314 /* 315 * Find the node referenced by the ParameterPathString 316 */ 317 Status = AcpiNsGetNodeByPath (Operand[4]->String.Pointer, StartNode, 318 ACPI_NS_SEARCH_PARENT, &ParameterNode); 319 if (ACPI_FAILURE (Status)) 320 { 321 return_ACPI_STATUS (Status); 322 } 323 } 324 325 /* Load the table into the namespace */ 326 327 Status = AcpiExAddTable (Table, ParentNode, &DdbHandle); 328 if (ACPI_FAILURE (Status)) 329 { 330 return_ACPI_STATUS (Status); 331 } 332 333 /* Parameter Data (optional) */ 334 335 if (ParameterNode) 336 { 337 /* Store the parameter data into the optional parameter object */ 338 339 Status = AcpiExStore (Operand[5], ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode), 340 WalkState); 341 if (ACPI_FAILURE (Status)) 342 { 343 (void) AcpiExUnloadTable (DdbHandle); 344 return_ACPI_STATUS (Status); 345 } 346 } 347 348 *ReturnDesc = DdbHandle; 349 return_ACPI_STATUS (Status); 350} 351 352 353/******************************************************************************* 354 * 355 * FUNCTION: AcpiExLoadOp 356 * 357 * PARAMETERS: ObjDesc - Region or Field where the table will be 358 * obtained 359 * Target - Where a handle to the table will be stored 360 * WalkState - Current state 361 * 362 * RETURN: Status 363 * 364 * DESCRIPTION: Load an ACPI table from a field or operation region 365 * 366 ******************************************************************************/ 367 368ACPI_STATUS 369AcpiExLoadOp ( 370 ACPI_OPERAND_OBJECT *ObjDesc, 371 ACPI_OPERAND_OBJECT *Target, 372 ACPI_WALK_STATE *WalkState) 373{ 374 ACPI_STATUS Status; 375 ACPI_OPERAND_OBJECT *DdbHandle; 376 ACPI_OPERAND_OBJECT *BufferDesc = NULL; 377 ACPI_TABLE_HEADER *TablePtr = NULL; 378 UINT8 *TableDataPtr; 379 ACPI_TABLE_HEADER TableHeader; 380 UINT32 i; 381 382 ACPI_FUNCTION_TRACE ("ExLoadOp"); 383 384 385 /* Object can be either an OpRegion or a Field */ 386 387 switch (ACPI_GET_OBJECT_TYPE (ObjDesc)) 388 { 389 case ACPI_TYPE_REGION: 390 391 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n", 392 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc))); 393 394 /* Get the table header */ 395 396 TableHeader.Length = 0; 397 for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++) 398 { 399 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ, 400 (ACPI_PHYSICAL_ADDRESS) i, 8, 401 ((UINT8 *) &TableHeader) + i); 402 if (ACPI_FAILURE (Status)) 403 { 404 return_ACPI_STATUS (Status); 405 } 406 } 407 408 /* Allocate a buffer for the entire table */ 409 410 TablePtr = ACPI_MEM_ALLOCATE (TableHeader.Length); 411 if (!TablePtr) 412 { 413 return_ACPI_STATUS (AE_NO_MEMORY); 414 } 415 416 /* Copy the header to the buffer */ 417 418 ACPI_MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER)); 419 TableDataPtr = ACPI_PTR_ADD (UINT8, TablePtr, sizeof (ACPI_TABLE_HEADER)); 420 421 /* Get the table from the op region */ 422 423 for (i = 0; i < TableHeader.Length; i++) 424 { 425 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ, 426 (ACPI_PHYSICAL_ADDRESS) i, 8, 427 ((UINT8 *) TableDataPtr + i)); 428 if (ACPI_FAILURE (Status)) 429 { 430 goto Cleanup; 431 } 432 } 433 break; 434 435 436 case ACPI_TYPE_LOCAL_REGION_FIELD: 437 case ACPI_TYPE_LOCAL_BANK_FIELD: 438 case ACPI_TYPE_LOCAL_INDEX_FIELD: 439 440 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n", 441 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc))); 442 443 /* 444 * The length of the field must be at least as large as the table. 445 * Read the entire field and thus the entire table. Buffer is 446 * allocated during the read. 447 */ 448 Status = AcpiExReadDataFromField (WalkState, ObjDesc, &BufferDesc); 449 if (ACPI_FAILURE (Status)) 450 { 451 goto Cleanup; 452 } 453 454 TablePtr = ACPI_CAST_PTR (ACPI_TABLE_HEADER, BufferDesc->Buffer.Pointer); 455 break; 456 457 458 default: 459 return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 460 } 461 462 /* The table must be either an SSDT or a PSDT */ 463 464 if ((!ACPI_STRNCMP (TablePtr->Signature, 465 AcpiGbl_TableData[ACPI_TABLE_PSDT].Signature, 466 AcpiGbl_TableData[ACPI_TABLE_PSDT].SigLength)) && 467 (!ACPI_STRNCMP (TablePtr->Signature, 468 AcpiGbl_TableData[ACPI_TABLE_SSDT].Signature, 469 AcpiGbl_TableData[ACPI_TABLE_SSDT].SigLength))) 470 { 471 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 472 "Table has invalid signature [%4.4s], must be SSDT or PSDT\n", 473 TablePtr->Signature)); 474 Status = AE_BAD_SIGNATURE; 475 goto Cleanup; 476 } 477 478 /* Install the new table into the local data structures */ 479 480 Status = AcpiExAddTable (TablePtr, AcpiGbl_RootNode, &DdbHandle); 481 if (ACPI_FAILURE (Status)) 482 { 483 goto Cleanup; 484 } 485 486 /* Store the DdbHandle into the Target operand */ 487 488 Status = AcpiExStore (DdbHandle, Target, WalkState); 489 if (ACPI_FAILURE (Status)) 490 { 491 (void) AcpiExUnloadTable (DdbHandle); 492 } 493 494 return_ACPI_STATUS (Status); 495 496 497Cleanup: 498 499 if (BufferDesc) 500 { 501 AcpiUtRemoveReference (BufferDesc); 502 } 503 else 504 { 505 ACPI_MEM_FREE (TablePtr); 506 } 507 return_ACPI_STATUS (Status); 508} 509 510 511/******************************************************************************* 512 * 513 * FUNCTION: AcpiExUnloadTable 514 * 515 * PARAMETERS: DdbHandle - Handle to a previously loaded table 516 * 517 * RETURN: Status 518 * 519 * DESCRIPTION: Unload an ACPI table 520 * 521 ******************************************************************************/ 522 523ACPI_STATUS 524AcpiExUnloadTable ( 525 ACPI_OPERAND_OBJECT *DdbHandle) 526{ 527 ACPI_STATUS Status = AE_OK; 528 ACPI_OPERAND_OBJECT *TableDesc = DdbHandle; 529 ACPI_TABLE_DESC *TableInfo; 530 531 532 ACPI_FUNCTION_TRACE ("ExUnloadTable"); 533 534 535 /* 536 * Validate the handle 537 * Although the handle is partially validated in AcpiExReconfiguration(), 538 * when it calls AcpiExResolveOperands(), the handle is more completely 539 * validated here. 540 */ 541 if ((!DdbHandle) || 542 (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) || 543 (ACPI_GET_OBJECT_TYPE (DdbHandle) != ACPI_TYPE_LOCAL_REFERENCE)) 544 { 545 return_ACPI_STATUS (AE_BAD_PARAMETER); 546 } 547 548 /* Get the actual table descriptor from the DdbHandle */ 549 550 TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object; 551 552 /* 553 * Delete the entire namespace under this table Node 554 * (Offset contains the TableId) 555 */ 556 AcpiNsDeleteNamespaceByOwner (TableInfo->TableId); 557 558 /* Delete the table itself */ 559 560 (void) AcpiTbUninstallTable (TableInfo->InstalledDesc); 561 562 /* Delete the table descriptor (DdbHandle) */ 563 564 AcpiUtRemoveReference (TableDesc); 565 return_ACPI_STATUS (Status); 566} 567
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