exconfig.c revision 85756
1/****************************************************************************** 2 * 3 * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes) 4 * $Revision: 44 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90 * PARTICULAR PURPOSE. 91 * 92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99 * LIMITED REMEDY. 100 * 101 * 4.3. Licensee shall not export, either directly or indirectly, any of this 102 * software or system incorporating such software without first obtaining any 103 * required license or other approval from the U. S. Department of Commerce or 104 * any other agency or department of the United States Government. In the 105 * event Licensee exports any such software from the United States or 106 * re-exports any such software from a foreign destination, Licensee shall 107 * ensure that the distribution and export/re-export of the software is in 108 * compliance with all laws, regulations, orders, or other restrictions of the 109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110 * any of its subsidiaries will export/re-export any technical data, process, 111 * software, or service, directly or indirectly, to any country for which the 112 * United States government or any agency thereof requires an export license, 113 * other governmental approval, or letter of assurance, without first obtaining 114 * such license, approval or letter. 115 * 116 *****************************************************************************/ 117 118#define __EXCONFIG_C__ 119 120#include "acpi.h" 121#include "acparser.h" 122#include "acinterp.h" 123#include "amlcode.h" 124#include "acnamesp.h" 125#include "acevents.h" 126#include "actables.h" 127#include "acdispat.h" 128 129 130#define _COMPONENT ACPI_EXECUTER 131 MODULE_NAME ("exconfig") 132 133 134/***************************************************************************** 135 * 136 * FUNCTION: AcpiExLoadTableOp 137 * 138 * PARAMETERS: RgnDesc - Op region where the table will be obtained 139 * DdbHandle - Where a handle to the table will be returned 140 * 141 * RETURN: Status 142 * 143 * DESCRIPTION: Load an ACPI table 144 * 145 ****************************************************************************/ 146 147ACPI_STATUS 148AcpiExLoadOp ( 149 ACPI_OPERAND_OBJECT *RgnDesc, 150 ACPI_OPERAND_OBJECT *DdbHandle) 151{ 152 ACPI_STATUS Status; 153 ACPI_OPERAND_OBJECT *TableDesc = NULL; 154 UINT8 *TablePtr; 155 UINT8 *TableDataPtr; 156 ACPI_TABLE_HEADER TableHeader; 157 ACPI_TABLE_DESC TableInfo; 158 UINT32 i; 159 160 161 FUNCTION_TRACE ("ExLoadOp"); 162 163 /* TBD: [Unhandled] Object can be either a field or an opregion */ 164 165 166 /* Get the table header */ 167 168 TableHeader.Length = 0; 169 for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++) 170 { 171 Status = AcpiEvAddressSpaceDispatch (RgnDesc, ACPI_READ_ADR_SPACE, 172 (ACPI_PHYSICAL_ADDRESS) i, 8, 173 (UINT32 *) ((UINT8 *) &TableHeader + i)); 174 if (ACPI_FAILURE (Status)) 175 { 176 return_ACPI_STATUS (Status); 177 } 178 } 179 180 /* Allocate a buffer for the entire table */ 181 182 TablePtr = ACPI_MEM_ALLOCATE (TableHeader.Length); 183 if (!TablePtr) 184 { 185 return_ACPI_STATUS (AE_NO_MEMORY); 186 } 187 188 /* Copy the header to the buffer */ 189 190 MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER)); 191 TableDataPtr = TablePtr + sizeof (ACPI_TABLE_HEADER); 192 193 194 /* Get the table from the op region */ 195 196 for (i = 0; i < TableHeader.Length; i++) 197 { 198 Status = AcpiEvAddressSpaceDispatch (RgnDesc, ACPI_READ_ADR_SPACE, 199 (ACPI_PHYSICAL_ADDRESS) i, 8, 200 (UINT32 *) (TableDataPtr + i)); 201 if (ACPI_FAILURE (Status)) 202 { 203 goto Cleanup; 204 } 205 } 206 207 208 /* Table must be either an SSDT or a PSDT */ 209 210 if ((!STRNCMP (TableHeader.Signature, 211 AcpiGbl_AcpiTableData[ACPI_TABLE_PSDT].Signature, 212 AcpiGbl_AcpiTableData[ACPI_TABLE_PSDT].SigLength)) && 213 (!STRNCMP (TableHeader.Signature, 214 AcpiGbl_AcpiTableData[ACPI_TABLE_SSDT].Signature, 215 AcpiGbl_AcpiTableData[ACPI_TABLE_SSDT].SigLength))) 216 { 217 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 218 "Table has invalid signature [%4.4s], must be SSDT or PSDT\n", 219 (char*)TableHeader.Signature)); 220 Status = AE_BAD_SIGNATURE; 221 goto Cleanup; 222 } 223 224 /* Create an object to be the table handle */ 225 226 TableDesc = AcpiUtCreateInternalObject (INTERNAL_TYPE_REFERENCE); 227 if (!TableDesc) 228 { 229 Status = AE_NO_MEMORY; 230 goto Cleanup; 231 } 232 233 234 /* Install the new table into the local data structures */ 235 236 TableInfo.Pointer = (ACPI_TABLE_HEADER *) TablePtr; 237 TableInfo.Length = TableHeader.Length; 238 TableInfo.Allocation = ACPI_MEM_ALLOCATED; 239 TableInfo.BasePointer = TablePtr; 240 241 Status = AcpiTbInstallTable (NULL, &TableInfo); 242 if (ACPI_FAILURE (Status)) 243 { 244 goto Cleanup; 245 } 246 247 /* Add the table to the namespace */ 248 249 /* TBD: [Restructure] - change to whatever new interface is appropriate */ 250/* 251 Status = AcpiLoadNamespace (); 252 if (ACPI_FAILURE (Status)) 253 { 254*/ 255 /* TBD: [Errors] Unload the table on failure ? */ 256/* 257 goto Cleanup; 258 } 259*/ 260 261 262 /* TBD: [Investigate] we need a pointer to the table desc */ 263 264 /* Init the table handle */ 265 266 TableDesc->Reference.Opcode = AML_LOAD_OP; 267 TableDesc->Reference.Object = TableInfo.InstalledDesc; 268 269 /* TBD: store the tabledesc into the DdbHandle target */ 270 /* DdbHandle = TableDesc; */ 271 272 return_ACPI_STATUS (Status); 273 274 275Cleanup: 276 277 ACPI_MEM_FREE (TableDesc); 278 ACPI_MEM_FREE (TablePtr); 279 return_ACPI_STATUS (Status); 280} 281 282 283/***************************************************************************** 284 * 285 * FUNCTION: AcpiExUnloadTable 286 * 287 * PARAMETERS: DdbHandle - Handle to a previously loaded table 288 * 289 * RETURN: Status 290 * 291 * DESCRIPTION: Unload an ACPI table 292 * 293 ****************************************************************************/ 294 295ACPI_STATUS 296AcpiExUnloadTable ( 297 ACPI_OPERAND_OBJECT *DdbHandle) 298{ 299 ACPI_STATUS Status = AE_NOT_IMPLEMENTED; 300 ACPI_OPERAND_OBJECT *TableDesc = DdbHandle; 301 ACPI_TABLE_DESC *TableInfo; 302 303 304 FUNCTION_TRACE ("ExUnloadTable"); 305 306 307 /* 308 * Validate the handle 309 * Although the handle is partially validated in AcpiExReconfiguration(), 310 * when it calls AcpiExResolveOperands(), the handle is more completely 311 * validated here. 312 */ 313 if ((!DdbHandle) || 314 (!VALID_DESCRIPTOR_TYPE (DdbHandle, ACPI_DESC_TYPE_INTERNAL)) || 315 (((ACPI_OPERAND_OBJECT *)DdbHandle)->Common.Type != 316 INTERNAL_TYPE_REFERENCE)) 317 { 318 return_ACPI_STATUS (AE_BAD_PARAMETER); 319 } 320 321 /* Get the actual table descriptor from the DdbHandle */ 322 323 TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object; 324 325 /* 326 * Delete the entire namespace under this table Node 327 * (Offset contains the TableId) 328 */ 329 Status = AcpiNsDeleteNamespaceByOwner (TableInfo->TableId); 330 if (ACPI_FAILURE (Status)) 331 { 332 return_ACPI_STATUS (Status); 333 } 334 335 /* Delete the table itself */ 336 337 AcpiTbUninstallTable (TableInfo->InstalledDesc); 338 339 /* Delete the table descriptor (DdbHandle) */ 340 341 AcpiUtRemoveReference (TableDesc); 342 343 return_ACPI_STATUS (Status); 344} 345 346