14 * All rights reserved. 15 * 16 * 2. License 17 * 18 * 2.1. This is your license from Intel Corp. under its intellectual property 19 * rights. You may have additional license terms from the party that provided 20 * you this software, covering your right to use that party's intellectual 21 * property rights. 22 * 23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 24 * copy of the source code appearing in this file ("Covered Code") an 25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 26 * base code distributed originally by Intel ("Original Intel Code") to copy, 27 * make derivatives, distribute, use and display any portion of the Covered 28 * Code in any form, with the right to sublicense such rights; and 29 * 30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 31 * license (with the right to sublicense), under only those claims of Intel 32 * patents that are infringed by the Original Intel Code, to make, use, sell, 33 * offer to sell, and import the Covered Code and derivative works thereof 34 * solely to the minimum extent necessary to exercise the above copyright 35 * license, and in no event shall the patent license extend to any additions 36 * to or modifications of the Original Intel Code. No other license or right 37 * is granted directly or by implication, estoppel or otherwise; 38 * 39 * The above copyright and patent license is granted only if the following 40 * conditions are met: 41 * 42 * 3. Conditions 43 * 44 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45 * Redistribution of source code of any substantial portion of the Covered 46 * Code or modification with rights to further distribute source must include 47 * the above Copyright Notice, the above License, this list of Conditions, 48 * and the following Disclaimer and Export Compliance provision. In addition, 49 * Licensee must cause all Covered Code to which Licensee contributes to 50 * contain a file documenting the changes Licensee made to create that Covered 51 * Code and the date of any change. Licensee must include in that file the 52 * documentation of any changes made by any predecessor Licensee. Licensee 53 * must include a prominent statement that the modification is derived, 54 * directly or indirectly, from Original Intel Code. 55 * 56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57 * Redistribution of source code of any substantial portion of the Covered 58 * Code or modification without rights to further distribute source must 59 * include the following Disclaimer and Export Compliance provision in the 60 * documentation and/or other materials provided with distribution. In 61 * addition, Licensee may not authorize further sublicense of source of any 62 * portion of the Covered Code, and must include terms to the effect that the 63 * license from Licensee to its licensee is limited to the intellectual 64 * property embodied in the software Licensee provides to its licensee, and 65 * not to intellectual property embodied in modifications its licensee may 66 * make. 67 * 68 * 3.3. Redistribution of Executable. Redistribution in executable form of any 69 * substantial portion of the Covered Code or modification must reproduce the 70 * above Copyright Notice, and the following Disclaimer and Export Compliance 71 * provision in the documentation and/or other materials provided with the 72 * distribution. 73 * 74 * 3.4. Intel retains all right, title, and interest in and to the Original 75 * Intel Code. 76 * 77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78 * Intel shall be used in advertising or otherwise to promote the sale, use or 79 * other dealings in products derived from or relating to the Covered Code 80 * without prior written authorization from Intel. 81 * 82 * 4. Disclaimer and Export Compliance 83 * 84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 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 __TBXFACE_C__ 119 120#include "acpi.h" 121#include "acnamesp.h" 122#include "actables.h" 123 124 125#define _COMPONENT ACPI_TABLES 126 ACPI_MODULE_NAME ("tbxface") 127 128 129/******************************************************************************* 130 * 131 * FUNCTION: AcpiLoadTables 132 * 133 * PARAMETERS: None 134 * 135 * RETURN: Status 136 * 137 * DESCRIPTION: This function is called to load the ACPI tables from the 138 * provided RSDT 139 * 140 ******************************************************************************/ 141 142ACPI_STATUS 143AcpiLoadTables (void) 144{ 145 ACPI_POINTER RsdpAddress; 146 ACPI_STATUS Status; 147 148 149 ACPI_FUNCTION_TRACE ("AcpiLoadTables"); 150 151 152 /* Get the RSDP */ 153 154 Status = AcpiOsGetRootPointer (ACPI_LOGICAL_ADDRESSING, 155 &RsdpAddress); 156 if (ACPI_FAILURE (Status)) 157 { 158 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not get RSDP, %s\n", 159 AcpiFormatException (Status))); 160 goto ErrorExit; 161 } 162 163 /* Map and validate the RSDP */ 164 165 AcpiGbl_TableFlags = RsdpAddress.PointerType; 166 167 Status = AcpiTbVerifyRsdp (&RsdpAddress); 168 if (ACPI_FAILURE (Status)) 169 { 170 ACPI_REPORT_ERROR (("AcpiLoadTables: RSDP Failed validation: %s\n", 171 AcpiFormatException (Status))); 172 goto ErrorExit; 173 } 174 175 /* Get the RSDT via the RSDP */ 176 177 Status = AcpiTbGetTableRsdt (); 178 if (ACPI_FAILURE (Status)) 179 { 180 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load RSDT: %s\n", 181 AcpiFormatException (Status))); 182 goto ErrorExit; 183 } 184 185 /* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */ 186 187 Status = AcpiTbGetRequiredTables (); 188 if (ACPI_FAILURE (Status)) 189 { 190 ACPI_REPORT_ERROR (("AcpiLoadTables: Error getting required tables (DSDT/FADT/FACS): %s\n", 191 AcpiFormatException (Status))); 192 goto ErrorExit; 193 } 194 195 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n")); 196 197 198 /* Load the namespace from the tables */ 199 200 Status = AcpiNsLoadNamespace (); 201 if (ACPI_FAILURE (Status)) 202 { 203 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load namespace: %s\n", 204 AcpiFormatException (Status))); 205 goto ErrorExit; 206 } 207 208 return_ACPI_STATUS (AE_OK); 209 210 211ErrorExit: 212 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load tables: %s\n", 213 AcpiFormatException (Status))); 214 215 return_ACPI_STATUS (Status); 216} 217 218 219/******************************************************************************* 220 * 221 * FUNCTION: AcpiLoadTable 222 * 223 * PARAMETERS: TablePtr - pointer to a buffer containing the entire 224 * table to be loaded 225 * 226 * RETURN: Status 227 * 228 * DESCRIPTION: This function is called to load a table from the caller's 229 * buffer. The buffer must contain an entire ACPI Table including 230 * a valid header. The header fields will be verified, and if it 231 * is determined that the table is invalid, the call will fail. 232 * 233 ******************************************************************************/ 234 235ACPI_STATUS 236AcpiLoadTable ( 237 ACPI_TABLE_HEADER *TablePtr) 238{ 239 ACPI_STATUS Status; 240 ACPI_TABLE_DESC TableInfo; 241 ACPI_POINTER Address; 242 243 244 ACPI_FUNCTION_TRACE ("AcpiLoadTable"); 245 246 247 if (!TablePtr) 248 { 249 return_ACPI_STATUS (AE_BAD_PARAMETER); 250 } 251 252 /* Copy the table to a local buffer */ 253 254 Address.PointerType = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING; 255 Address.Pointer.Logical = TablePtr; 256 257 Status = AcpiTbGetTableBody (&Address, TablePtr, &TableInfo); 258 if (ACPI_FAILURE (Status)) 259 { 260 return_ACPI_STATUS (Status); 261 } 262 263 /* Install the new table into the local data structures */ 264 265 Status = AcpiTbInstallTable (&TableInfo); 266 if (ACPI_FAILURE (Status)) 267 { 268 /* Free table allocated by AcpiTbGetTableBody */ 269 270 AcpiTbDeleteSingleTable (&TableInfo); 271 return_ACPI_STATUS (Status); 272 } 273 274 /* Convert the table to common format if necessary */ 275 276 switch (TableInfo.Type) 277 { 278 case ACPI_TABLE_FADT: 279 280 Status = AcpiTbConvertTableFadt (); 281 break; 282 283 case ACPI_TABLE_FACS: 284 285 Status = AcpiTbBuildCommonFacs (&TableInfo); 286 break; 287 288 default: 289 /* Load table into namespace if it contains executable AML */ 290 291 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode); 292 break; 293 } 294 295 if (ACPI_FAILURE (Status)) 296 { 297 /* Uninstall table and free the buffer */ 298 299 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc); 300 } 301 302 return_ACPI_STATUS (Status); 303} 304 305 306/******************************************************************************* 307 * 308 * FUNCTION: AcpiUnloadTable 309 * 310 * PARAMETERS: TableType - Type of table to be unloaded 311 * 312 * RETURN: Status 313 * 314 * DESCRIPTION: This routine is used to force the unload of a table 315 * 316 ******************************************************************************/ 317 318ACPI_STATUS 319AcpiUnloadTable ( 320 ACPI_TABLE_TYPE TableType) 321{ 322 ACPI_TABLE_DESC *TableDesc; 323 324 325 ACPI_FUNCTION_TRACE ("AcpiUnloadTable"); 326 327 328 /* Parameter validation */ 329 330 if (TableType > ACPI_TABLE_MAX) 331 { 332 return_ACPI_STATUS (AE_BAD_PARAMETER); 333 } 334 335 336 /* Find all tables of the requested type */ 337 338 TableDesc = AcpiGbl_TableLists[TableType].Next; 339 while (TableDesc) 340 { 341 /* 342 * Delete all namespace entries owned by this table. Note that these 343 * entries can appear anywhere in the namespace by virtue of the AML 344 * "Scope" operator. Thus, we need to track ownership by an ID, not 345 * simply a position within the hierarchy 346 */ 347 AcpiNsDeleteNamespaceByOwner (TableDesc->TableId); 348 349 TableDesc = TableDesc->Next; 350 } 351 352 /* Delete (or unmap) all tables of this type */ 353 354 AcpiTbDeleteTablesByType (TableType); 355 return_ACPI_STATUS (AE_OK); 356} 357 358 359/******************************************************************************* 360 * 361 * FUNCTION: AcpiGetTableHeader 362 * 363 * PARAMETERS: TableType - one of the defined table types 364 * Instance - the non zero instance of the table, allows 365 * support for multiple tables of the same type 366 * see AcpiGbl_AcpiTableFlag 367 * OutTableHeader - pointer to the ACPI_TABLE_HEADER if successful 368 * 369 * DESCRIPTION: This function is called to get an ACPI table header. The caller 370 * supplies an pointer to a data area sufficient to contain an ACPI 371 * ACPI_TABLE_HEADER structure. 372 * 373 * The header contains a length field that can be used to determine 374 * the size of the buffer needed to contain the entire table. This 375 * function is not valid for the RSD PTR table since it does not 376 * have a standard header and is fixed length. 377 * 378 ******************************************************************************/ 379 380ACPI_STATUS 381AcpiGetTableHeader ( 382 ACPI_TABLE_TYPE TableType, 383 UINT32 Instance, 384 ACPI_TABLE_HEADER *OutTableHeader) 385{ 386 ACPI_TABLE_HEADER *TblPtr; 387 ACPI_STATUS Status; 388 389 390 ACPI_FUNCTION_TRACE ("AcpiGetTableHeader"); 391 392 393 if ((Instance == 0) || 394 (TableType == ACPI_TABLE_RSDP) || 395 (!OutTableHeader)) 396 { 397 return_ACPI_STATUS (AE_BAD_PARAMETER); 398 } 399 400 /* Check the table type and instance */ 401 402 if ((TableType > ACPI_TABLE_MAX) || 403 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) && 404 Instance > 1)) 405 { 406 return_ACPI_STATUS (AE_BAD_PARAMETER); 407 } 408 409 410 /* Get a pointer to the entire table */ 411 412 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr); 413 if (ACPI_FAILURE (Status)) 414 { 415 return_ACPI_STATUS (Status); 416 } 417 418 /* 419 * The function will return a NULL pointer if the table is not loaded 420 */ 421 if (TblPtr == NULL) 422 { 423 return_ACPI_STATUS (AE_NOT_EXIST); 424 } 425 426 /* 427 * Copy the header to the caller's buffer 428 */ 429 ACPI_MEMCPY ((void *) OutTableHeader, (void *) TblPtr, 430 sizeof (ACPI_TABLE_HEADER)); 431 432 return_ACPI_STATUS (Status); 433} 434 435 436/******************************************************************************* 437 * 438 * FUNCTION: AcpiGetTable 439 * 440 * PARAMETERS: TableType - one of the defined table types 441 * Instance - the non zero instance of the table, allows 442 * support for multiple tables of the same type 443 * see AcpiGbl_AcpiTableFlag 444 * RetBuffer - pointer to a structure containing a buffer to 445 * receive the table 446 * 447 * RETURN: Status 448 * 449 * DESCRIPTION: This function is called to get an ACPI table. The caller 450 * supplies an OutBuffer large enough to contain the entire ACPI 451 * table. The caller should call the AcpiGetTableHeader function 452 * first to determine the buffer size needed. Upon completion 453 * the OutBuffer->Length field will indicate the number of bytes 454 * copied into the OutBuffer->BufPtr buffer. This table will be 455 * a complete table including the header. 456 * 457 ******************************************************************************/ 458 459ACPI_STATUS 460AcpiGetTable ( 461 ACPI_TABLE_TYPE TableType, 462 UINT32 Instance, 463 ACPI_BUFFER *RetBuffer) 464{ 465 ACPI_TABLE_HEADER *TblPtr; 466 ACPI_STATUS Status; 467 ACPI_SIZE TableLength; 468 469 470 ACPI_FUNCTION_TRACE ("AcpiGetTable"); 471 472 473 /* Parameter validation */ 474 475 if (Instance == 0) 476 { 477 return_ACPI_STATUS (AE_BAD_PARAMETER); 478 } 479 480 Status = AcpiUtValidateBuffer (RetBuffer); 481 if (ACPI_FAILURE (Status)) 482 { 483 return_ACPI_STATUS (Status); 484 } 485 486 /* Check the table type and instance */ 487 488 if ((TableType > ACPI_TABLE_MAX) || 489 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) && 490 Instance > 1)) 491 { 492 return_ACPI_STATUS (AE_BAD_PARAMETER); 493 } 494 495 496 /* Get a pointer to the entire table */ 497 498 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr); 499 if (ACPI_FAILURE (Status)) 500 { 501 return_ACPI_STATUS (Status); 502 } 503 504 /* 505 * AcpiTbGetTablePtr will return a NULL pointer if the 506 * table is not loaded. 507 */ 508 if (TblPtr == NULL) 509 { 510 return_ACPI_STATUS (AE_NOT_EXIST); 511 } 512 513 /* Get the table length */ 514 515 if (TableType == ACPI_TABLE_RSDP) 516 { 517 /* 518 * RSD PTR is the only "table" without a header 519 */ 520 TableLength = sizeof (RSDP_DESCRIPTOR); 521 } 522 else 523 { 524 TableLength = (ACPI_SIZE) TblPtr->Length; 525 } 526 527 /* Validate/Allocate/Clear caller buffer */ 528 529 Status = AcpiUtInitializeBuffer (RetBuffer, TableLength); 530 if (ACPI_FAILURE (Status)) 531 { 532 return_ACPI_STATUS (Status); 533 } 534 535 /* Copy the table to the buffer */ 536 537 ACPI_MEMCPY ((void *) RetBuffer->Pointer, (void *) TblPtr, TableLength); 538 return_ACPI_STATUS (AE_OK); 539} 540 541
| 14 * All rights reserved. 15 * 16 * 2. License 17 * 18 * 2.1. This is your license from Intel Corp. under its intellectual property 19 * rights. You may have additional license terms from the party that provided 20 * you this software, covering your right to use that party's intellectual 21 * property rights. 22 * 23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 24 * copy of the source code appearing in this file ("Covered Code") an 25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 26 * base code distributed originally by Intel ("Original Intel Code") to copy, 27 * make derivatives, distribute, use and display any portion of the Covered 28 * Code in any form, with the right to sublicense such rights; and 29 * 30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 31 * license (with the right to sublicense), under only those claims of Intel 32 * patents that are infringed by the Original Intel Code, to make, use, sell, 33 * offer to sell, and import the Covered Code and derivative works thereof 34 * solely to the minimum extent necessary to exercise the above copyright 35 * license, and in no event shall the patent license extend to any additions 36 * to or modifications of the Original Intel Code. No other license or right 37 * is granted directly or by implication, estoppel or otherwise; 38 * 39 * The above copyright and patent license is granted only if the following 40 * conditions are met: 41 * 42 * 3. Conditions 43 * 44 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45 * Redistribution of source code of any substantial portion of the Covered 46 * Code or modification with rights to further distribute source must include 47 * the above Copyright Notice, the above License, this list of Conditions, 48 * and the following Disclaimer and Export Compliance provision. In addition, 49 * Licensee must cause all Covered Code to which Licensee contributes to 50 * contain a file documenting the changes Licensee made to create that Covered 51 * Code and the date of any change. Licensee must include in that file the 52 * documentation of any changes made by any predecessor Licensee. Licensee 53 * must include a prominent statement that the modification is derived, 54 * directly or indirectly, from Original Intel Code. 55 * 56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57 * Redistribution of source code of any substantial portion of the Covered 58 * Code or modification without rights to further distribute source must 59 * include the following Disclaimer and Export Compliance provision in the 60 * documentation and/or other materials provided with distribution. In 61 * addition, Licensee may not authorize further sublicense of source of any 62 * portion of the Covered Code, and must include terms to the effect that the 63 * license from Licensee to its licensee is limited to the intellectual 64 * property embodied in the software Licensee provides to its licensee, and 65 * not to intellectual property embodied in modifications its licensee may 66 * make. 67 * 68 * 3.3. Redistribution of Executable. Redistribution in executable form of any 69 * substantial portion of the Covered Code or modification must reproduce the 70 * above Copyright Notice, and the following Disclaimer and Export Compliance 71 * provision in the documentation and/or other materials provided with the 72 * distribution. 73 * 74 * 3.4. Intel retains all right, title, and interest in and to the Original 75 * Intel Code. 76 * 77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78 * Intel shall be used in advertising or otherwise to promote the sale, use or 79 * other dealings in products derived from or relating to the Covered Code 80 * without prior written authorization from Intel. 81 * 82 * 4. Disclaimer and Export Compliance 83 * 84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 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 __TBXFACE_C__ 119 120#include "acpi.h" 121#include "acnamesp.h" 122#include "actables.h" 123 124 125#define _COMPONENT ACPI_TABLES 126 ACPI_MODULE_NAME ("tbxface") 127 128 129/******************************************************************************* 130 * 131 * FUNCTION: AcpiLoadTables 132 * 133 * PARAMETERS: None 134 * 135 * RETURN: Status 136 * 137 * DESCRIPTION: This function is called to load the ACPI tables from the 138 * provided RSDT 139 * 140 ******************************************************************************/ 141 142ACPI_STATUS 143AcpiLoadTables (void) 144{ 145 ACPI_POINTER RsdpAddress; 146 ACPI_STATUS Status; 147 148 149 ACPI_FUNCTION_TRACE ("AcpiLoadTables"); 150 151 152 /* Get the RSDP */ 153 154 Status = AcpiOsGetRootPointer (ACPI_LOGICAL_ADDRESSING, 155 &RsdpAddress); 156 if (ACPI_FAILURE (Status)) 157 { 158 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not get RSDP, %s\n", 159 AcpiFormatException (Status))); 160 goto ErrorExit; 161 } 162 163 /* Map and validate the RSDP */ 164 165 AcpiGbl_TableFlags = RsdpAddress.PointerType; 166 167 Status = AcpiTbVerifyRsdp (&RsdpAddress); 168 if (ACPI_FAILURE (Status)) 169 { 170 ACPI_REPORT_ERROR (("AcpiLoadTables: RSDP Failed validation: %s\n", 171 AcpiFormatException (Status))); 172 goto ErrorExit; 173 } 174 175 /* Get the RSDT via the RSDP */ 176 177 Status = AcpiTbGetTableRsdt (); 178 if (ACPI_FAILURE (Status)) 179 { 180 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load RSDT: %s\n", 181 AcpiFormatException (Status))); 182 goto ErrorExit; 183 } 184 185 /* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */ 186 187 Status = AcpiTbGetRequiredTables (); 188 if (ACPI_FAILURE (Status)) 189 { 190 ACPI_REPORT_ERROR (("AcpiLoadTables: Error getting required tables (DSDT/FADT/FACS): %s\n", 191 AcpiFormatException (Status))); 192 goto ErrorExit; 193 } 194 195 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n")); 196 197 198 /* Load the namespace from the tables */ 199 200 Status = AcpiNsLoadNamespace (); 201 if (ACPI_FAILURE (Status)) 202 { 203 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load namespace: %s\n", 204 AcpiFormatException (Status))); 205 goto ErrorExit; 206 } 207 208 return_ACPI_STATUS (AE_OK); 209 210 211ErrorExit: 212 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load tables: %s\n", 213 AcpiFormatException (Status))); 214 215 return_ACPI_STATUS (Status); 216} 217 218 219/******************************************************************************* 220 * 221 * FUNCTION: AcpiLoadTable 222 * 223 * PARAMETERS: TablePtr - pointer to a buffer containing the entire 224 * table to be loaded 225 * 226 * RETURN: Status 227 * 228 * DESCRIPTION: This function is called to load a table from the caller's 229 * buffer. The buffer must contain an entire ACPI Table including 230 * a valid header. The header fields will be verified, and if it 231 * is determined that the table is invalid, the call will fail. 232 * 233 ******************************************************************************/ 234 235ACPI_STATUS 236AcpiLoadTable ( 237 ACPI_TABLE_HEADER *TablePtr) 238{ 239 ACPI_STATUS Status; 240 ACPI_TABLE_DESC TableInfo; 241 ACPI_POINTER Address; 242 243 244 ACPI_FUNCTION_TRACE ("AcpiLoadTable"); 245 246 247 if (!TablePtr) 248 { 249 return_ACPI_STATUS (AE_BAD_PARAMETER); 250 } 251 252 /* Copy the table to a local buffer */ 253 254 Address.PointerType = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING; 255 Address.Pointer.Logical = TablePtr; 256 257 Status = AcpiTbGetTableBody (&Address, TablePtr, &TableInfo); 258 if (ACPI_FAILURE (Status)) 259 { 260 return_ACPI_STATUS (Status); 261 } 262 263 /* Install the new table into the local data structures */ 264 265 Status = AcpiTbInstallTable (&TableInfo); 266 if (ACPI_FAILURE (Status)) 267 { 268 /* Free table allocated by AcpiTbGetTableBody */ 269 270 AcpiTbDeleteSingleTable (&TableInfo); 271 return_ACPI_STATUS (Status); 272 } 273 274 /* Convert the table to common format if necessary */ 275 276 switch (TableInfo.Type) 277 { 278 case ACPI_TABLE_FADT: 279 280 Status = AcpiTbConvertTableFadt (); 281 break; 282 283 case ACPI_TABLE_FACS: 284 285 Status = AcpiTbBuildCommonFacs (&TableInfo); 286 break; 287 288 default: 289 /* Load table into namespace if it contains executable AML */ 290 291 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode); 292 break; 293 } 294 295 if (ACPI_FAILURE (Status)) 296 { 297 /* Uninstall table and free the buffer */ 298 299 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc); 300 } 301 302 return_ACPI_STATUS (Status); 303} 304 305 306/******************************************************************************* 307 * 308 * FUNCTION: AcpiUnloadTable 309 * 310 * PARAMETERS: TableType - Type of table to be unloaded 311 * 312 * RETURN: Status 313 * 314 * DESCRIPTION: This routine is used to force the unload of a table 315 * 316 ******************************************************************************/ 317 318ACPI_STATUS 319AcpiUnloadTable ( 320 ACPI_TABLE_TYPE TableType) 321{ 322 ACPI_TABLE_DESC *TableDesc; 323 324 325 ACPI_FUNCTION_TRACE ("AcpiUnloadTable"); 326 327 328 /* Parameter validation */ 329 330 if (TableType > ACPI_TABLE_MAX) 331 { 332 return_ACPI_STATUS (AE_BAD_PARAMETER); 333 } 334 335 336 /* Find all tables of the requested type */ 337 338 TableDesc = AcpiGbl_TableLists[TableType].Next; 339 while (TableDesc) 340 { 341 /* 342 * Delete all namespace entries owned by this table. Note that these 343 * entries can appear anywhere in the namespace by virtue of the AML 344 * "Scope" operator. Thus, we need to track ownership by an ID, not 345 * simply a position within the hierarchy 346 */ 347 AcpiNsDeleteNamespaceByOwner (TableDesc->TableId); 348 349 TableDesc = TableDesc->Next; 350 } 351 352 /* Delete (or unmap) all tables of this type */ 353 354 AcpiTbDeleteTablesByType (TableType); 355 return_ACPI_STATUS (AE_OK); 356} 357 358 359/******************************************************************************* 360 * 361 * FUNCTION: AcpiGetTableHeader 362 * 363 * PARAMETERS: TableType - one of the defined table types 364 * Instance - the non zero instance of the table, allows 365 * support for multiple tables of the same type 366 * see AcpiGbl_AcpiTableFlag 367 * OutTableHeader - pointer to the ACPI_TABLE_HEADER if successful 368 * 369 * DESCRIPTION: This function is called to get an ACPI table header. The caller 370 * supplies an pointer to a data area sufficient to contain an ACPI 371 * ACPI_TABLE_HEADER structure. 372 * 373 * The header contains a length field that can be used to determine 374 * the size of the buffer needed to contain the entire table. This 375 * function is not valid for the RSD PTR table since it does not 376 * have a standard header and is fixed length. 377 * 378 ******************************************************************************/ 379 380ACPI_STATUS 381AcpiGetTableHeader ( 382 ACPI_TABLE_TYPE TableType, 383 UINT32 Instance, 384 ACPI_TABLE_HEADER *OutTableHeader) 385{ 386 ACPI_TABLE_HEADER *TblPtr; 387 ACPI_STATUS Status; 388 389 390 ACPI_FUNCTION_TRACE ("AcpiGetTableHeader"); 391 392 393 if ((Instance == 0) || 394 (TableType == ACPI_TABLE_RSDP) || 395 (!OutTableHeader)) 396 { 397 return_ACPI_STATUS (AE_BAD_PARAMETER); 398 } 399 400 /* Check the table type and instance */ 401 402 if ((TableType > ACPI_TABLE_MAX) || 403 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) && 404 Instance > 1)) 405 { 406 return_ACPI_STATUS (AE_BAD_PARAMETER); 407 } 408 409 410 /* Get a pointer to the entire table */ 411 412 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr); 413 if (ACPI_FAILURE (Status)) 414 { 415 return_ACPI_STATUS (Status); 416 } 417 418 /* 419 * The function will return a NULL pointer if the table is not loaded 420 */ 421 if (TblPtr == NULL) 422 { 423 return_ACPI_STATUS (AE_NOT_EXIST); 424 } 425 426 /* 427 * Copy the header to the caller's buffer 428 */ 429 ACPI_MEMCPY ((void *) OutTableHeader, (void *) TblPtr, 430 sizeof (ACPI_TABLE_HEADER)); 431 432 return_ACPI_STATUS (Status); 433} 434 435 436/******************************************************************************* 437 * 438 * FUNCTION: AcpiGetTable 439 * 440 * PARAMETERS: TableType - one of the defined table types 441 * Instance - the non zero instance of the table, allows 442 * support for multiple tables of the same type 443 * see AcpiGbl_AcpiTableFlag 444 * RetBuffer - pointer to a structure containing a buffer to 445 * receive the table 446 * 447 * RETURN: Status 448 * 449 * DESCRIPTION: This function is called to get an ACPI table. The caller 450 * supplies an OutBuffer large enough to contain the entire ACPI 451 * table. The caller should call the AcpiGetTableHeader function 452 * first to determine the buffer size needed. Upon completion 453 * the OutBuffer->Length field will indicate the number of bytes 454 * copied into the OutBuffer->BufPtr buffer. This table will be 455 * a complete table including the header. 456 * 457 ******************************************************************************/ 458 459ACPI_STATUS 460AcpiGetTable ( 461 ACPI_TABLE_TYPE TableType, 462 UINT32 Instance, 463 ACPI_BUFFER *RetBuffer) 464{ 465 ACPI_TABLE_HEADER *TblPtr; 466 ACPI_STATUS Status; 467 ACPI_SIZE TableLength; 468 469 470 ACPI_FUNCTION_TRACE ("AcpiGetTable"); 471 472 473 /* Parameter validation */ 474 475 if (Instance == 0) 476 { 477 return_ACPI_STATUS (AE_BAD_PARAMETER); 478 } 479 480 Status = AcpiUtValidateBuffer (RetBuffer); 481 if (ACPI_FAILURE (Status)) 482 { 483 return_ACPI_STATUS (Status); 484 } 485 486 /* Check the table type and instance */ 487 488 if ((TableType > ACPI_TABLE_MAX) || 489 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) && 490 Instance > 1)) 491 { 492 return_ACPI_STATUS (AE_BAD_PARAMETER); 493 } 494 495 496 /* Get a pointer to the entire table */ 497 498 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr); 499 if (ACPI_FAILURE (Status)) 500 { 501 return_ACPI_STATUS (Status); 502 } 503 504 /* 505 * AcpiTbGetTablePtr will return a NULL pointer if the 506 * table is not loaded. 507 */ 508 if (TblPtr == NULL) 509 { 510 return_ACPI_STATUS (AE_NOT_EXIST); 511 } 512 513 /* Get the table length */ 514 515 if (TableType == ACPI_TABLE_RSDP) 516 { 517 /* 518 * RSD PTR is the only "table" without a header 519 */ 520 TableLength = sizeof (RSDP_DESCRIPTOR); 521 } 522 else 523 { 524 TableLength = (ACPI_SIZE) TblPtr->Length; 525 } 526 527 /* Validate/Allocate/Clear caller buffer */ 528 529 Status = AcpiUtInitializeBuffer (RetBuffer, TableLength); 530 if (ACPI_FAILURE (Status)) 531 { 532 return_ACPI_STATUS (Status); 533 } 534 535 /* Copy the table to the buffer */ 536 537 ACPI_MEMCPY ((void *) RetBuffer->Pointer, (void *) TblPtr, TableLength); 538 return_ACPI_STATUS (AE_OK); 539} 540 541
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