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 - 2014, 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 #define __DSINIT_C__ 117 118 #include "acpi.h" 119 #include "accommon.h" 120 #include "acdispat.h" 121 #include "acnamesp.h" 122 #include "actables.h" 123 124 #define _COMPONENT ACPI_DISPATCHER 125 ACPI_MODULE_NAME ("dsinit") 126 127 128 /* Local prototypes */ 129 130 static ACPI_STATUS 131 AcpiDsInitOneObject ( 132 ACPI_HANDLE ObjHandle, 133 UINT32 Level, 134 void *Context, 135 void **ReturnValue); 136 137 138 /******************************************************************************* 139 * 140 * FUNCTION: AcpiDsInitOneObject 141 * 142 * PARAMETERS: ObjHandle - Node for the object 143 * Level - Current nesting level 144 * Context - Points to a init info struct 145 * ReturnValue - Not used 146 * 147 * RETURN: Status 148 * 149 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 150 * within the namespace. 151 * 152 * Currently, the only objects that require initialization are: 153 * 1) Methods 154 * 2) Operation Regions 155 * 156 ******************************************************************************/ 157 158 static ACPI_STATUS 159 AcpiDsInitOneObject ( 160 ACPI_HANDLE ObjHandle, 161 UINT32 Level, 162 void *Context, 163 void **ReturnValue) 164 { 165 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 166 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 167 ACPI_STATUS Status; 168 ACPI_OPERAND_OBJECT *ObjDesc; 169 170 171 ACPI_FUNCTION_ENTRY (); 172 173 174 /* 175 * We are only interested in NS nodes owned by the table that 176 * was just loaded 177 */ 178 if (Node->OwnerId != Info->OwnerId) 179 { 180 return (AE_OK); 181 } 182 183 Info->ObjectCount++; 184 185 /* And even then, we are only interested in a few object types */ 186 187 switch (AcpiNsGetType (ObjHandle)) 188 { 189 case ACPI_TYPE_REGION: 190 191 Status = AcpiDsInitializeRegion (ObjHandle); 192 if (ACPI_FAILURE (Status)) 193 { 194 ACPI_EXCEPTION ((AE_INFO, Status, 195 "During Region initialization %p [%4.4s]", 196 ObjHandle, AcpiUtGetNodeName (ObjHandle))); 197 } 198 199 Info->OpRegionCount++; 200 break; 201 202 case ACPI_TYPE_METHOD: 203 /* 204 * Auto-serialization support. We will examine each method that is 205 * NotSerialized to determine if it creates any Named objects. If 206 * it does, it will be marked serialized to prevent problems if 207 * the method is entered by two or more threads and an attempt is 208 * made to create the same named object twice -- which results in 209 * an AE_ALREADY_EXISTS exception and method abort. 210 */ 211 Info->MethodCount++; 212 ObjDesc = AcpiNsGetAttachedObject (Node); 213 if (!ObjDesc) 214 { 215 break; 216 } 217 218 /* Ignore if already serialized */ 219 220 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED) 221 { 222 Info->SerialMethodCount++; 223 break; 224 } 225 226 if (AcpiGbl_AutoSerializeMethods) 227 { 228 /* Parse/scan method and serialize it if necessary */ 229 230 AcpiDsAutoSerializeMethod (Node, ObjDesc); 231 if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED) 232 { 233 /* Method was just converted to Serialized */ 234 235 Info->SerialMethodCount++; 236 Info->SerializedMethodCount++; 237 break; 238 } 239 } 240 241 Info->NonSerialMethodCount++; 242 break; 243 244 case ACPI_TYPE_DEVICE: 245 246 Info->DeviceCount++; 247 break; 248 249 default: 250 251 break; 252 } 253 254 /* 255 * We ignore errors from above, and always return OK, since 256 * we don't want to abort the walk on a single error. 257 */ 258 return (AE_OK); 259 } 260 261 262 /******************************************************************************* 263 * 264 * FUNCTION: AcpiDsInitializeObjects 265 * 266 * PARAMETERS: TableDesc - Descriptor for parent ACPI table 267 * StartNode - Root of subtree to be initialized. 268 * 269 * RETURN: Status 270 * 271 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any 272 * necessary initialization on the objects found therein 273 * 274 ******************************************************************************/ 275 276 ACPI_STATUS 277 AcpiDsInitializeObjects ( 278 UINT32 TableIndex, 279 ACPI_NAMESPACE_NODE *StartNode) 280 { 281 ACPI_STATUS Status; 282 ACPI_INIT_WALK_INFO Info; 283 ACPI_TABLE_HEADER *Table; 284 ACPI_OWNER_ID OwnerId; 285 286 287 ACPI_FUNCTION_TRACE (DsInitializeObjects); 288 289 290 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); 291 if (ACPI_FAILURE (Status)) 292 { 293 return_ACPI_STATUS (Status); 294 } 295 296 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 297 "**** Starting initialization of namespace objects ****\n")); 298 299 /* Set all init info to zero */ 300 301 ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); 302 303 Info.OwnerId = OwnerId; 304 Info.TableIndex = TableIndex; 305 306 /* Walk entire namespace from the supplied root */ 307 308 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 309 if (ACPI_FAILURE (Status)) 310 { 311 return_ACPI_STATUS (Status); 312 } 313 314 /* 315 * We don't use AcpiWalkNamespace since we do not want to acquire 316 * the namespace reader lock. 317 */ 318 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX, 319 ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL); 320 if (ACPI_FAILURE (Status)) 321 { 322 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace")); 323 } 324 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 325 326 Status = AcpiGetTableByIndex (TableIndex, &Table); 327 if (ACPI_FAILURE (Status)) 328 { 329 return_ACPI_STATUS (Status); 330 } 331 332 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 333 "Table [%4.4s] (id %4.4X) - %4u Objects with %3u Devices, " 334 "%3u Regions, %3u Methods (%u/%u/%u Serial/Non/Cvt)\n", 335 Table->Signature, OwnerId, Info.ObjectCount, Info.DeviceCount, 336 Info.OpRegionCount, Info.MethodCount, Info.SerialMethodCount, 337 Info.NonSerialMethodCount, Info.SerializedMethodCount)); 338 339 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n", 340 Info.MethodCount, Info.OpRegionCount)); 341 342 return_ACPI_STATUS (AE_OK); 343 } 344