1 /****************************************************************************** 2 * 3 * Module Name: dsinit - Object initialization namespace walk 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2016, 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 #include "acpi.h" 117 #include "accommon.h" 118 #include "acdispat.h" 119 #include "acnamesp.h" 120 #include "actables.h" 121 122 #define _COMPONENT ACPI_DISPATCHER 123 ACPI_MODULE_NAME ("dsinit") 124 125 126 /* Local prototypes */ 127 128 static ACPI_STATUS 129 AcpiDsInitOneObject ( 130 ACPI_HANDLE ObjHandle, 131 UINT32 Level, 132 void *Context, 133 void **ReturnValue); 134 135 136 /******************************************************************************* 137 * 138 * FUNCTION: AcpiDsInitOneObject 139 * 140 * PARAMETERS: ObjHandle - Node for the object 141 * Level - Current nesting level 142 * Context - Points to a init info struct 143 * ReturnValue - Not used 144 * 145 * RETURN: Status 146 * 147 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 148 * within the namespace. 149 * 150 * Currently, the only objects that require initialization are: 151 * 1) Methods 152 * 2) Operation Regions 153 * 154 ******************************************************************************/ 155 156 static ACPI_STATUS 157 AcpiDsInitOneObject ( 158 ACPI_HANDLE ObjHandle, 159 UINT32 Level, 160 void *Context, 161 void **ReturnValue) 162 { 163 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 164 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 165 ACPI_STATUS Status; 166 ACPI_OPERAND_OBJECT *ObjDesc; 167 168 169 ACPI_FUNCTION_ENTRY (); 170 171 172 /* 173 * We are only interested in NS nodes owned by the table that 174 * was just loaded 175 */ 176 if (Node->OwnerId != Info->OwnerId) 177 { 178 return (AE_OK); 179 } 180 181 Info->ObjectCount++; 182 183 /* And even then, we are only interested in a few object types */ 184 185 switch (AcpiNsGetType (ObjHandle)) 186 { 187 case ACPI_TYPE_REGION: 188 189 Status = AcpiDsInitializeRegion (ObjHandle); 190 if (ACPI_FAILURE (Status)) 191 { 192 ACPI_EXCEPTION ((AE_INFO, Status, 193 "During Region initialization %p [%4.4s]", 194 ObjHandle, AcpiUtGetNodeName (ObjHandle))); 195 } 196 197 Info->OpRegionCount++; 198 break; 199 200 case ACPI_TYPE_METHOD: 201 /* 202 * Auto-serialization support. We will examine each method that is 203 * NotSerialized to determine if it creates any Named objects. If 204 * it does, it will be marked serialized to prevent problems if 205 * the method is entered by two or more threads and an attempt is 206 * made to create the same named object twice -- which results in 207 * an AE_ALREADY_EXISTS exception and method abort. 208 */ 209 Info->MethodCount++; 210 ObjDesc = AcpiNsGetAttachedObject (Node); 211 if (!ObjDesc) 212 { 213 break; 214 } 215 216 /* Ignore if already serialized */ 217 218 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED) 219 { 220 Info->SerialMethodCount++; 221 break; 222 } 223 224 if (AcpiGbl_AutoSerializeMethods) 225 { 226 /* Parse/scan method and serialize it if necessary */ 227 228 AcpiDsAutoSerializeMethod (Node, ObjDesc); 229 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED) 230 { 231 /* Method was just converted to Serialized */ 232 233 Info->SerialMethodCount++; 234 Info->SerializedMethodCount++; 235 break; 236 } 237 } 238 239 Info->NonSerialMethodCount++; 240 break; 241 242 case ACPI_TYPE_DEVICE: 243 244 Info->DeviceCount++; 245 break; 246 247 default: 248 249 break; 250 } 251 252 /* 253 * We ignore errors from above, and always return OK, since 254 * we don't want to abort the walk on a single error. 255 */ 256 return (AE_OK); 257 } 258 259 260 /******************************************************************************* 261 * 262 * FUNCTION: AcpiDsInitializeObjects 263 * 264 * PARAMETERS: TableDesc - Descriptor for parent ACPI table 265 * StartNode - Root of subtree to be initialized. 266 * 267 * RETURN: Status 268 * 269 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any 270 * necessary initialization on the objects found therein 271 * 272 ******************************************************************************/ 273 274 ACPI_STATUS 275 AcpiDsInitializeObjects ( 276 UINT32 TableIndex, 277 ACPI_NAMESPACE_NODE *StartNode) 278 { 279 ACPI_STATUS Status; 280 ACPI_INIT_WALK_INFO Info; 281 ACPI_TABLE_HEADER *Table; 282 ACPI_OWNER_ID OwnerId; 283 284 285 ACPI_FUNCTION_TRACE (DsInitializeObjects); 286 287 288 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); 289 if (ACPI_FAILURE (Status)) 290 { 291 return_ACPI_STATUS (Status); 292 } 293 294 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 295 "**** Starting initialization of namespace objects ****\n")); 296 297 /* Set all init info to zero */ 298 299 memset (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); 300 301 Info.OwnerId = OwnerId; 302 Info.TableIndex = TableIndex; 303 304 /* Walk entire namespace from the supplied root */ 305 306 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 307 if (ACPI_FAILURE (Status)) 308 { 309 return_ACPI_STATUS (Status); 310 } 311 312 /* 313 * We don't use AcpiWalkNamespace since we do not want to acquire 314 * the namespace reader lock. 315 */ 316 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX, 317 ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL); 318 if (ACPI_FAILURE (Status)) 319 { 320 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace")); 321 } 322 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 323 324 Status = AcpiGetTableByIndex (TableIndex, &Table); 325 if (ACPI_FAILURE (Status)) 326 { 327 return_ACPI_STATUS (Status); 328 } 329 330 /* DSDT is always the first AML table */ 331 332 if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT)) 333 { 334 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 335 "\nInitializing Namespace objects:\n")); 336 } 337 338 /* Summary of objects initialized */ 339 340 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 341 "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, " 342 "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n", 343 Table->Signature, Table->OemTableId, OwnerId, Info.ObjectCount, 344 Info.DeviceCount,Info.OpRegionCount, Info.MethodCount, 345 Info.SerialMethodCount, Info.NonSerialMethodCount, 346 Info.SerializedMethodCount)); 347 348 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n", 349 Info.MethodCount, Info.OpRegionCount)); 350 351 return_ACPI_STATUS (AE_OK); 352 } 353