1 /****************************************************************************** 2 * 3 * Module Name: nsload - namespace loading/expanding/contracting procedures 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2020, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 ***************************************************************************** 115 * 116 * Alternatively, you may choose to be licensed under the terms of the 117 * following license: 118 * 119 * Redistribution and use in source and binary forms, with or without 120 * modification, are permitted provided that the following conditions 121 * are met: 122 * 1. Redistributions of source code must retain the above copyright 123 * notice, this list of conditions, and the following disclaimer, 124 * without modification. 125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 126 * substantially similar to the "NO WARRANTY" disclaimer below 127 * ("Disclaimer") and any redistribution must be conditioned upon 128 * including a substantially similar Disclaimer requirement for further 129 * binary redistribution. 130 * 3. Neither the names of the above-listed copyright holders nor the names 131 * of any contributors may be used to endorse or promote products derived 132 * from this software without specific prior written permission. 133 * 134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 145 * 146 * Alternatively, you may choose to be licensed under the terms of the 147 * GNU General Public License ("GPL") version 2 as published by the Free 148 * Software Foundation. 149 * 150 *****************************************************************************/ 151 152 #include <contrib/dev/acpica/include/acpi.h> 153 #include <contrib/dev/acpica/include/accommon.h> 154 #include <contrib/dev/acpica/include/acnamesp.h> 155 #include <contrib/dev/acpica/include/acdispat.h> 156 #include <contrib/dev/acpica/include/actables.h> 157 #include <contrib/dev/acpica/include/acinterp.h> 158 159 160 #define _COMPONENT ACPI_NAMESPACE 161 ACPI_MODULE_NAME ("nsload") 162 163 /* Local prototypes */ 164 165 #ifdef ACPI_FUTURE_IMPLEMENTATION 166 ACPI_STATUS 167 AcpiNsUnloadNamespace ( 168 ACPI_HANDLE Handle); 169 170 static ACPI_STATUS 171 AcpiNsDeleteSubtree ( 172 ACPI_HANDLE StartHandle); 173 #endif 174 175 176 /******************************************************************************* 177 * 178 * FUNCTION: AcpiNsLoadTable 179 * 180 * PARAMETERS: TableIndex - Index for table to be loaded 181 * Node - Owning NS node 182 * 183 * RETURN: Status 184 * 185 * DESCRIPTION: Load one ACPI table into the namespace 186 * 187 ******************************************************************************/ 188 189 ACPI_STATUS 190 AcpiNsLoadTable ( 191 UINT32 TableIndex, 192 ACPI_NAMESPACE_NODE *Node) 193 { 194 ACPI_STATUS Status; 195 196 197 ACPI_FUNCTION_TRACE (NsLoadTable); 198 199 200 /* If table already loaded into namespace, just return */ 201 202 if (AcpiTbIsTableLoaded (TableIndex)) 203 { 204 Status = AE_ALREADY_EXISTS; 205 goto Unlock; 206 } 207 208 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 209 "**** Loading table into namespace ****\n")); 210 211 Status = AcpiTbAllocateOwnerId (TableIndex); 212 if (ACPI_FAILURE (Status)) 213 { 214 goto Unlock; 215 } 216 217 /* 218 * Parse the table and load the namespace with all named 219 * objects found within. Control methods are NOT parsed 220 * at this time. In fact, the control methods cannot be 221 * parsed until the entire namespace is loaded, because 222 * if a control method makes a forward reference (call) 223 * to another control method, we can't continue parsing 224 * because we don't know how many arguments to parse next! 225 */ 226 Status = AcpiNsParseTable (TableIndex, Node); 227 if (ACPI_SUCCESS (Status)) 228 { 229 AcpiTbSetTableLoadedFlag (TableIndex, TRUE); 230 } 231 else 232 { 233 /* 234 * On error, delete any namespace objects created by this table. 235 * We cannot initialize these objects, so delete them. There are 236 * a couple of especially bad cases: 237 * AE_ALREADY_EXISTS - namespace collision. 238 * AE_NOT_FOUND - the target of a Scope operator does not 239 * exist. This target of Scope must already exist in the 240 * namespace, as per the ACPI specification. 241 */ 242 AcpiNsDeleteNamespaceByOwner ( 243 AcpiGbl_RootTableList.Tables[TableIndex].OwnerId); 244 245 AcpiTbReleaseOwnerId (TableIndex); 246 return_ACPI_STATUS (Status); 247 } 248 249 Unlock: 250 if (ACPI_FAILURE (Status)) 251 { 252 return_ACPI_STATUS (Status); 253 } 254 255 /* 256 * Now we can parse the control methods. We always parse 257 * them here for a sanity check, and if configured for 258 * just-in-time parsing, we delete the control method 259 * parse trees. 260 */ 261 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 262 "**** Begin Table Object Initialization\n")); 263 264 AcpiExEnterInterpreter (); 265 Status = AcpiDsInitializeObjects (TableIndex, Node); 266 AcpiExExitInterpreter (); 267 268 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 269 "**** Completed Table Object Initialization\n")); 270 271 return_ACPI_STATUS (Status); 272 } 273 274 275 #ifdef ACPI_OBSOLETE_FUNCTIONS 276 /******************************************************************************* 277 * 278 * FUNCTION: AcpiLoadNamespace 279 * 280 * PARAMETERS: None 281 * 282 * RETURN: Status 283 * 284 * DESCRIPTION: Load the name space from what ever is pointed to by DSDT. 285 * (DSDT points to either the BIOS or a buffer.) 286 * 287 ******************************************************************************/ 288 289 ACPI_STATUS 290 AcpiNsLoadNamespace ( 291 void) 292 { 293 ACPI_STATUS Status; 294 295 296 ACPI_FUNCTION_TRACE (AcpiLoadNameSpace); 297 298 299 /* There must be at least a DSDT installed */ 300 301 if (AcpiGbl_DSDT == NULL) 302 { 303 ACPI_ERROR ((AE_INFO, "DSDT is not in memory")); 304 return_ACPI_STATUS (AE_NO_ACPI_TABLES); 305 } 306 307 /* 308 * Load the namespace. The DSDT is required, 309 * but the SSDT and PSDT tables are optional. 310 */ 311 Status = AcpiNsLoadTableByType (ACPI_TABLE_ID_DSDT); 312 if (ACPI_FAILURE (Status)) 313 { 314 return_ACPI_STATUS (Status); 315 } 316 317 /* Ignore exceptions from these */ 318 319 (void) AcpiNsLoadTableByType (ACPI_TABLE_ID_SSDT); 320 (void) AcpiNsLoadTableByType (ACPI_TABLE_ID_PSDT); 321 322 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 323 "ACPI Namespace successfully loaded at root %p\n", 324 AcpiGbl_RootNode)); 325 326 return_ACPI_STATUS (Status); 327 } 328 #endif 329 330 #ifdef ACPI_FUTURE_IMPLEMENTATION 331 /******************************************************************************* 332 * 333 * FUNCTION: AcpiNsDeleteSubtree 334 * 335 * PARAMETERS: StartHandle - Handle in namespace where search begins 336 * 337 * RETURNS Status 338 * 339 * DESCRIPTION: Walks the namespace starting at the given handle and deletes 340 * all objects, entries, and scopes in the entire subtree. 341 * 342 * Namespace/Interpreter should be locked or the subsystem should 343 * be in shutdown before this routine is called. 344 * 345 ******************************************************************************/ 346 347 static ACPI_STATUS 348 AcpiNsDeleteSubtree ( 349 ACPI_HANDLE StartHandle) 350 { 351 ACPI_STATUS Status; 352 ACPI_HANDLE ChildHandle; 353 ACPI_HANDLE ParentHandle; 354 ACPI_HANDLE NextChildHandle; 355 ACPI_HANDLE Dummy; 356 UINT32 Level; 357 358 359 ACPI_FUNCTION_TRACE (NsDeleteSubtree); 360 361 362 ParentHandle = StartHandle; 363 ChildHandle = NULL; 364 Level = 1; 365 366 /* 367 * Traverse the tree of objects until we bubble back up 368 * to where we started. 369 */ 370 while (Level > 0) 371 { 372 /* Attempt to get the next object in this scope */ 373 374 Status = AcpiGetNextObject (ACPI_TYPE_ANY, ParentHandle, 375 ChildHandle, &NextChildHandle); 376 377 ChildHandle = NextChildHandle; 378 379 /* Did we get a new object? */ 380 381 if (ACPI_SUCCESS (Status)) 382 { 383 /* Check if this object has any children */ 384 385 if (ACPI_SUCCESS (AcpiGetNextObject (ACPI_TYPE_ANY, ChildHandle, 386 NULL, &Dummy))) 387 { 388 /* 389 * There is at least one child of this object, 390 * visit the object 391 */ 392 Level++; 393 ParentHandle = ChildHandle; 394 ChildHandle = NULL; 395 } 396 } 397 else 398 { 399 /* 400 * No more children in this object, go back up to 401 * the object's parent 402 */ 403 Level--; 404 405 /* Delete all children now */ 406 407 AcpiNsDeleteChildren (ChildHandle); 408 409 ChildHandle = ParentHandle; 410 Status = AcpiGetParent (ParentHandle, &ParentHandle); 411 if (ACPI_FAILURE (Status)) 412 { 413 return_ACPI_STATUS (Status); 414 } 415 } 416 } 417 418 /* Now delete the starting object, and we are done */ 419 420 AcpiNsRemoveNode (ChildHandle); 421 return_ACPI_STATUS (AE_OK); 422 } 423 424 425 /******************************************************************************* 426 * 427 * FUNCTION: AcpiNsUnloadNameSpace 428 * 429 * PARAMETERS: Handle - Root of namespace subtree to be deleted 430 * 431 * RETURN: Status 432 * 433 * DESCRIPTION: Shrinks the namespace, typically in response to an undocking 434 * event. Deletes an entire subtree starting from (and 435 * including) the given handle. 436 * 437 ******************************************************************************/ 438 439 ACPI_STATUS 440 AcpiNsUnloadNamespace ( 441 ACPI_HANDLE Handle) 442 { 443 ACPI_STATUS Status; 444 445 446 ACPI_FUNCTION_TRACE (NsUnloadNameSpace); 447 448 449 /* Parameter validation */ 450 451 if (!AcpiGbl_RootNode) 452 { 453 return_ACPI_STATUS (AE_NO_NAMESPACE); 454 } 455 456 if (!Handle) 457 { 458 return_ACPI_STATUS (AE_BAD_PARAMETER); 459 } 460 461 /* This function does the real work */ 462 463 Status = AcpiNsDeleteSubtree (Handle); 464 return_ACPI_STATUS (Status); 465 } 466 #endif 467