| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: dsinit - Object initialization namespace walk |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include "acpi.h" |
| 45 | #include "accommon.h" |
| 46 | #include "acdispat.h" |
| 47 | #include "acnamesp.h" |
| 48 | #include "actables.h" |
| 49 | |
| 50 | #define _COMPONENT ACPI_DISPATCHER |
| 51 | ACPI_MODULE_NAME ("dsinit" ) |
| 52 | |
| 53 | |
| 54 | /* Local prototypes */ |
| 55 | |
| 56 | static ACPI_STATUS |
| 57 | AcpiDsInitOneObject ( |
| 58 | ACPI_HANDLE ObjHandle, |
| 59 | UINT32 Level, |
| 60 | void *Context, |
| 61 | void **ReturnValue); |
| 62 | |
| 63 | |
| 64 | /******************************************************************************* |
| 65 | * |
| 66 | * FUNCTION: AcpiDsInitOneObject |
| 67 | * |
| 68 | * PARAMETERS: ObjHandle - Node for the object |
| 69 | * Level - Current nesting level |
| 70 | * Context - Points to a init info struct |
| 71 | * ReturnValue - Not used |
| 72 | * |
| 73 | * RETURN: Status |
| 74 | * |
| 75 | * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object |
| 76 | * within the namespace. |
| 77 | * |
| 78 | * Currently, the only objects that require initialization are: |
| 79 | * 1) Methods |
| 80 | * 2) Operation Regions |
| 81 | * |
| 82 | ******************************************************************************/ |
| 83 | |
| 84 | static ACPI_STATUS |
| 85 | AcpiDsInitOneObject ( |
| 86 | ACPI_HANDLE ObjHandle, |
| 87 | UINT32 Level, |
| 88 | void *Context, |
| 89 | void **ReturnValue) |
| 90 | { |
| 91 | ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; |
| 92 | ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; |
| 93 | ACPI_STATUS Status; |
| 94 | ACPI_OPERAND_OBJECT *ObjDesc; |
| 95 | |
| 96 | |
| 97 | ACPI_FUNCTION_ENTRY (); |
| 98 | |
| 99 | |
| 100 | /* |
| 101 | * We are only interested in NS nodes owned by the table that |
| 102 | * was just loaded |
| 103 | */ |
| 104 | if (Node->OwnerId != Info->OwnerId) |
| 105 | { |
| 106 | return (AE_OK); |
| 107 | } |
| 108 | |
| 109 | Info->ObjectCount++; |
| 110 | |
| 111 | /* And even then, we are only interested in a few object types */ |
| 112 | |
| 113 | switch (AcpiNsGetType (ObjHandle)) |
| 114 | { |
| 115 | case ACPI_TYPE_REGION: |
| 116 | |
| 117 | Status = AcpiDsInitializeRegion (ObjHandle); |
| 118 | if (ACPI_FAILURE (Status)) |
| 119 | { |
| 120 | ACPI_EXCEPTION ((AE_INFO, Status, |
| 121 | "During Region initialization %p [%4.4s]" , |
| 122 | ObjHandle, AcpiUtGetNodeName (ObjHandle))); |
| 123 | } |
| 124 | |
| 125 | Info->OpRegionCount++; |
| 126 | break; |
| 127 | |
| 128 | case ACPI_TYPE_METHOD: |
| 129 | /* |
| 130 | * Auto-serialization support. We will examine each method that is |
| 131 | * NotSerialized to determine if it creates any Named objects. If |
| 132 | * it does, it will be marked serialized to prevent problems if |
| 133 | * the method is entered by two or more threads and an attempt is |
| 134 | * made to create the same named object twice -- which results in |
| 135 | * an AE_ALREADY_EXISTS exception and method abort. |
| 136 | */ |
| 137 | Info->MethodCount++; |
| 138 | ObjDesc = AcpiNsGetAttachedObject (Node); |
| 139 | if (!ObjDesc) |
| 140 | { |
| 141 | break; |
| 142 | } |
| 143 | |
| 144 | /* Ignore if already serialized */ |
| 145 | |
| 146 | if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED) |
| 147 | { |
| 148 | Info->SerialMethodCount++; |
| 149 | break; |
| 150 | } |
| 151 | |
| 152 | if (AcpiGbl_AutoSerializeMethods) |
| 153 | { |
| 154 | /* Parse/scan method and serialize it if necessary */ |
| 155 | |
| 156 | AcpiDsAutoSerializeMethod (Node, ObjDesc); |
| 157 | if (ObjDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED) |
| 158 | { |
| 159 | /* Method was just converted to Serialized */ |
| 160 | |
| 161 | Info->SerialMethodCount++; |
| 162 | Info->SerializedMethodCount++; |
| 163 | break; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | Info->NonSerialMethodCount++; |
| 168 | break; |
| 169 | |
| 170 | case ACPI_TYPE_DEVICE: |
| 171 | |
| 172 | Info->DeviceCount++; |
| 173 | break; |
| 174 | |
| 175 | default: |
| 176 | |
| 177 | break; |
| 178 | } |
| 179 | |
| 180 | /* |
| 181 | * We ignore errors from above, and always return OK, since |
| 182 | * we don't want to abort the walk on a single error. |
| 183 | */ |
| 184 | return (AE_OK); |
| 185 | } |
| 186 | |
| 187 | |
| 188 | /******************************************************************************* |
| 189 | * |
| 190 | * FUNCTION: AcpiDsInitializeObjects |
| 191 | * |
| 192 | * PARAMETERS: TableDesc - Descriptor for parent ACPI table |
| 193 | * StartNode - Root of subtree to be initialized. |
| 194 | * |
| 195 | * RETURN: Status |
| 196 | * |
| 197 | * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any |
| 198 | * necessary initialization on the objects found therein |
| 199 | * |
| 200 | ******************************************************************************/ |
| 201 | |
| 202 | ACPI_STATUS |
| 203 | AcpiDsInitializeObjects ( |
| 204 | UINT32 TableIndex, |
| 205 | ACPI_NAMESPACE_NODE *StartNode) |
| 206 | { |
| 207 | ACPI_STATUS Status; |
| 208 | ACPI_INIT_WALK_INFO Info; |
| 209 | ACPI_TABLE_HEADER *Table; |
| 210 | ACPI_OWNER_ID OwnerId; |
| 211 | |
| 212 | |
| 213 | ACPI_FUNCTION_TRACE (DsInitializeObjects); |
| 214 | |
| 215 | |
| 216 | Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); |
| 217 | if (ACPI_FAILURE (Status)) |
| 218 | { |
| 219 | return_ACPI_STATUS (Status); |
| 220 | } |
| 221 | |
| 222 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| 223 | "**** Starting initialization of namespace objects ****\n" )); |
| 224 | |
| 225 | /* Set all init info to zero */ |
| 226 | |
| 227 | memset (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); |
| 228 | |
| 229 | Info.OwnerId = OwnerId; |
| 230 | Info.TableIndex = TableIndex; |
| 231 | |
| 232 | /* Walk entire namespace from the supplied root */ |
| 233 | |
| 234 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
| 235 | if (ACPI_FAILURE (Status)) |
| 236 | { |
| 237 | return_ACPI_STATUS (Status); |
| 238 | } |
| 239 | |
| 240 | /* |
| 241 | * We don't use AcpiWalkNamespace since we do not want to acquire |
| 242 | * the namespace reader lock. |
| 243 | */ |
| 244 | Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX, |
| 245 | ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL); |
| 246 | if (ACPI_FAILURE (Status)) |
| 247 | { |
| 248 | ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace" )); |
| 249 | } |
| 250 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
| 251 | |
| 252 | Status = AcpiGetTableByIndex (TableIndex, &Table); |
| 253 | if (ACPI_FAILURE (Status)) |
| 254 | { |
| 255 | return_ACPI_STATUS (Status); |
| 256 | } |
| 257 | |
| 258 | /* DSDT is always the first AML table */ |
| 259 | |
| 260 | if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT)) |
| 261 | { |
| 262 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, |
| 263 | "\nInitializing Namespace objects:\n" )); |
| 264 | } |
| 265 | |
| 266 | /* Summary of objects initialized */ |
| 267 | |
| 268 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, |
| 269 | "Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, " |
| 270 | "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n" , |
| 271 | Table->Signature, Table->OemTableId, OwnerId, Info.ObjectCount, |
| 272 | Info.DeviceCount,Info.OpRegionCount, Info.MethodCount, |
| 273 | Info.SerialMethodCount, Info.NonSerialMethodCount, |
| 274 | Info.SerializedMethodCount)); |
| 275 | |
| 276 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n" , |
| 277 | Info.MethodCount, Info.OpRegionCount)); |
| 278 | |
| 279 | return_ACPI_STATUS (AE_OK); |
| 280 | } |
| 281 | |