1 /****************************************************************************** 2 * 3 * Module Name: dsinit - Object initialization namespace walk 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2012, 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 #define __DSINIT_C__ 45 46 #include <contrib/dev/acpica/include/acpi.h> 47 #include <contrib/dev/acpica/include/accommon.h> 48 #include <contrib/dev/acpica/include/acdispat.h> 49 #include <contrib/dev/acpica/include/acnamesp.h> 50 #include <contrib/dev/acpica/include/actables.h> 51 52 #define _COMPONENT ACPI_DISPATCHER 53 ACPI_MODULE_NAME ("dsinit") 54 55 /* Local prototypes */ 56 57 static ACPI_STATUS 58 AcpiDsInitOneObject ( 59 ACPI_HANDLE ObjHandle, 60 UINT32 Level, 61 void *Context, 62 void **ReturnValue); 63 64 65 /******************************************************************************* 66 * 67 * FUNCTION: AcpiDsInitOneObject 68 * 69 * PARAMETERS: ObjHandle - Node for the object 70 * Level - Current nesting level 71 * Context - Points to a init info struct 72 * ReturnValue - Not used 73 * 74 * RETURN: Status 75 * 76 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 77 * within the namespace. 78 * 79 * Currently, the only objects that require initialization are: 80 * 1) Methods 81 * 2) Operation Regions 82 * 83 ******************************************************************************/ 84 85 static ACPI_STATUS 86 AcpiDsInitOneObject ( 87 ACPI_HANDLE ObjHandle, 88 UINT32 Level, 89 void *Context, 90 void **ReturnValue) 91 { 92 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 93 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 94 ACPI_OBJECT_TYPE Type; 95 ACPI_STATUS Status; 96 97 98 ACPI_FUNCTION_ENTRY (); 99 100 101 /* 102 * We are only interested in NS nodes owned by the table that 103 * was just loaded 104 */ 105 if (Node->OwnerId != Info->OwnerId) 106 { 107 return (AE_OK); 108 } 109 110 Info->ObjectCount++; 111 112 /* And even then, we are only interested in a few object types */ 113 114 Type = AcpiNsGetType (ObjHandle); 115 116 switch (Type) 117 { 118 case ACPI_TYPE_REGION: 119 120 Status = AcpiDsInitializeRegion (ObjHandle); 121 if (ACPI_FAILURE (Status)) 122 { 123 ACPI_EXCEPTION ((AE_INFO, Status, 124 "During Region initialization %p [%4.4s]", 125 ObjHandle, AcpiUtGetNodeName (ObjHandle))); 126 } 127 128 Info->OpRegionCount++; 129 break; 130 131 132 case ACPI_TYPE_METHOD: 133 134 Info->MethodCount++; 135 break; 136 137 138 case ACPI_TYPE_DEVICE: 139 140 Info->DeviceCount++; 141 break; 142 143 144 default: 145 break; 146 } 147 148 /* 149 * We ignore errors from above, and always return OK, since 150 * we don't want to abort the walk on a single error. 151 */ 152 return (AE_OK); 153 } 154 155 156 /******************************************************************************* 157 * 158 * FUNCTION: AcpiDsInitializeObjects 159 * 160 * PARAMETERS: TableDesc - Descriptor for parent ACPI table 161 * StartNode - Root of subtree to be initialized. 162 * 163 * RETURN: Status 164 * 165 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any 166 * necessary initialization on the objects found therein 167 * 168 ******************************************************************************/ 169 170 ACPI_STATUS 171 AcpiDsInitializeObjects ( 172 UINT32 TableIndex, 173 ACPI_NAMESPACE_NODE *StartNode) 174 { 175 ACPI_STATUS Status; 176 ACPI_INIT_WALK_INFO Info; 177 ACPI_TABLE_HEADER *Table; 178 ACPI_OWNER_ID OwnerId; 179 180 181 ACPI_FUNCTION_TRACE (DsInitializeObjects); 182 183 184 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId); 185 if (ACPI_FAILURE (Status)) 186 { 187 return_ACPI_STATUS (Status); 188 } 189 190 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 191 "**** Starting initialization of namespace objects ****\n")); 192 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:")); 193 194 /* Set all init info to zero */ 195 196 ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); 197 198 Info.OwnerId = OwnerId; 199 Info.TableIndex = TableIndex; 200 201 /* Walk entire namespace from the supplied root */ 202 203 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 204 if (ACPI_FAILURE (Status)) 205 { 206 return_ACPI_STATUS (Status); 207 } 208 209 /* 210 * We don't use AcpiWalkNamespace since we do not want to acquire 211 * the namespace reader lock. 212 */ 213 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, StartNode, ACPI_UINT32_MAX, 214 ACPI_NS_WALK_UNLOCK, AcpiDsInitOneObject, NULL, &Info, NULL); 215 if (ACPI_FAILURE (Status)) 216 { 217 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace")); 218 } 219 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 220 221 Status = AcpiGetTableByIndex (TableIndex, &Table); 222 if (ACPI_FAILURE (Status)) 223 { 224 return_ACPI_STATUS (Status); 225 } 226 227 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 228 "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n", 229 Table->Signature, OwnerId, Info.ObjectCount, 230 Info.DeviceCount, Info.MethodCount, Info.OpRegionCount)); 231 232 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 233 "%u Methods, %u Regions\n", Info.MethodCount, Info.OpRegionCount)); 234 235 return_ACPI_STATUS (AE_OK); 236 } 237