10d02842fSSascha Wildner /****************************************************************************** 20d02842fSSascha Wildner * 30d02842fSSascha Wildner * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes) 40d02842fSSascha Wildner * 50d02842fSSascha Wildner *****************************************************************************/ 60d02842fSSascha Wildner 7*b4315fc7SSascha Wildner /****************************************************************************** 8*b4315fc7SSascha Wildner * 9*b4315fc7SSascha Wildner * 1. Copyright Notice 10*b4315fc7SSascha Wildner * 11*b4315fc7SSascha Wildner * Some or all of this work - Copyright (c) 1999 - 2017, Intel Corp. 120d02842fSSascha Wildner * All rights reserved. 130d02842fSSascha Wildner * 14*b4315fc7SSascha Wildner * 2. License 15*b4315fc7SSascha Wildner * 16*b4315fc7SSascha Wildner * 2.1. This is your license from Intel Corp. under its intellectual property 17*b4315fc7SSascha Wildner * rights. You may have additional license terms from the party that provided 18*b4315fc7SSascha Wildner * you this software, covering your right to use that party's intellectual 19*b4315fc7SSascha Wildner * property rights. 20*b4315fc7SSascha Wildner * 21*b4315fc7SSascha Wildner * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22*b4315fc7SSascha Wildner * copy of the source code appearing in this file ("Covered Code") an 23*b4315fc7SSascha Wildner * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24*b4315fc7SSascha Wildner * base code distributed originally by Intel ("Original Intel Code") to copy, 25*b4315fc7SSascha Wildner * make derivatives, distribute, use and display any portion of the Covered 26*b4315fc7SSascha Wildner * Code in any form, with the right to sublicense such rights; and 27*b4315fc7SSascha Wildner * 28*b4315fc7SSascha Wildner * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29*b4315fc7SSascha Wildner * license (with the right to sublicense), under only those claims of Intel 30*b4315fc7SSascha Wildner * patents that are infringed by the Original Intel Code, to make, use, sell, 31*b4315fc7SSascha Wildner * offer to sell, and import the Covered Code and derivative works thereof 32*b4315fc7SSascha Wildner * solely to the minimum extent necessary to exercise the above copyright 33*b4315fc7SSascha Wildner * license, and in no event shall the patent license extend to any additions 34*b4315fc7SSascha Wildner * to or modifications of the Original Intel Code. No other license or right 35*b4315fc7SSascha Wildner * is granted directly or by implication, estoppel or otherwise; 36*b4315fc7SSascha Wildner * 37*b4315fc7SSascha Wildner * The above copyright and patent license is granted only if the following 38*b4315fc7SSascha Wildner * conditions are met: 39*b4315fc7SSascha Wildner * 40*b4315fc7SSascha Wildner * 3. Conditions 41*b4315fc7SSascha Wildner * 42*b4315fc7SSascha Wildner * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43*b4315fc7SSascha Wildner * Redistribution of source code of any substantial portion of the Covered 44*b4315fc7SSascha Wildner * Code or modification with rights to further distribute source must include 45*b4315fc7SSascha Wildner * the above Copyright Notice, the above License, this list of Conditions, 46*b4315fc7SSascha Wildner * and the following Disclaimer and Export Compliance provision. In addition, 47*b4315fc7SSascha Wildner * Licensee must cause all Covered Code to which Licensee contributes to 48*b4315fc7SSascha Wildner * contain a file documenting the changes Licensee made to create that Covered 49*b4315fc7SSascha Wildner * Code and the date of any change. Licensee must include in that file the 50*b4315fc7SSascha Wildner * documentation of any changes made by any predecessor Licensee. Licensee 51*b4315fc7SSascha Wildner * must include a prominent statement that the modification is derived, 52*b4315fc7SSascha Wildner * directly or indirectly, from Original Intel Code. 53*b4315fc7SSascha Wildner * 54*b4315fc7SSascha Wildner * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55*b4315fc7SSascha Wildner * Redistribution of source code of any substantial portion of the Covered 56*b4315fc7SSascha Wildner * Code or modification without rights to further distribute source must 57*b4315fc7SSascha Wildner * include the following Disclaimer and Export Compliance provision in the 58*b4315fc7SSascha Wildner * documentation and/or other materials provided with distribution. In 59*b4315fc7SSascha Wildner * addition, Licensee may not authorize further sublicense of source of any 60*b4315fc7SSascha Wildner * portion of the Covered Code, and must include terms to the effect that the 61*b4315fc7SSascha Wildner * license from Licensee to its licensee is limited to the intellectual 62*b4315fc7SSascha Wildner * property embodied in the software Licensee provides to its licensee, and 63*b4315fc7SSascha Wildner * not to intellectual property embodied in modifications its licensee may 64*b4315fc7SSascha Wildner * make. 65*b4315fc7SSascha Wildner * 66*b4315fc7SSascha Wildner * 3.3. Redistribution of Executable. Redistribution in executable form of any 67*b4315fc7SSascha Wildner * substantial portion of the Covered Code or modification must reproduce the 68*b4315fc7SSascha Wildner * above Copyright Notice, and the following Disclaimer and Export Compliance 69*b4315fc7SSascha Wildner * provision in the documentation and/or other materials provided with the 70*b4315fc7SSascha Wildner * distribution. 71*b4315fc7SSascha Wildner * 72*b4315fc7SSascha Wildner * 3.4. Intel retains all right, title, and interest in and to the Original 73*b4315fc7SSascha Wildner * Intel Code. 74*b4315fc7SSascha Wildner * 75*b4315fc7SSascha Wildner * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76*b4315fc7SSascha Wildner * Intel shall be used in advertising or otherwise to promote the sale, use or 77*b4315fc7SSascha Wildner * other dealings in products derived from or relating to the Covered Code 78*b4315fc7SSascha Wildner * without prior written authorization from Intel. 79*b4315fc7SSascha Wildner * 80*b4315fc7SSascha Wildner * 4. Disclaimer and Export Compliance 81*b4315fc7SSascha Wildner * 82*b4315fc7SSascha Wildner * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83*b4315fc7SSascha Wildner * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84*b4315fc7SSascha Wildner * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85*b4315fc7SSascha Wildner * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86*b4315fc7SSascha Wildner 87*b4315fc7SSascha Wildner * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88*b4315fc7SSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89*b4315fc7SSascha Wildner * PARTICULAR PURPOSE. 90*b4315fc7SSascha Wildner * 91*b4315fc7SSascha Wildner * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92*b4315fc7SSascha Wildner * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93*b4315fc7SSascha Wildner * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94*b4315fc7SSascha Wildner * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95*b4315fc7SSascha Wildner * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96*b4315fc7SSascha Wildner * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97*b4315fc7SSascha Wildner * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98*b4315fc7SSascha Wildner * LIMITED REMEDY. 99*b4315fc7SSascha Wildner * 100*b4315fc7SSascha Wildner * 4.3. Licensee shall not export, either directly or indirectly, any of this 101*b4315fc7SSascha Wildner * software or system incorporating such software without first obtaining any 102*b4315fc7SSascha Wildner * required license or other approval from the U. S. Department of Commerce or 103*b4315fc7SSascha Wildner * any other agency or department of the United States Government. In the 104*b4315fc7SSascha Wildner * event Licensee exports any such software from the United States or 105*b4315fc7SSascha Wildner * re-exports any such software from a foreign destination, Licensee shall 106*b4315fc7SSascha Wildner * ensure that the distribution and export/re-export of the software is in 107*b4315fc7SSascha Wildner * compliance with all laws, regulations, orders, or other restrictions of the 108*b4315fc7SSascha Wildner * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109*b4315fc7SSascha Wildner * any of its subsidiaries will export/re-export any technical data, process, 110*b4315fc7SSascha Wildner * software, or service, directly or indirectly, to any country for which the 111*b4315fc7SSascha Wildner * United States government or any agency thereof requires an export license, 112*b4315fc7SSascha Wildner * other governmental approval, or letter of assurance, without first obtaining 113*b4315fc7SSascha Wildner * such license, approval or letter. 114*b4315fc7SSascha Wildner * 115*b4315fc7SSascha Wildner ***************************************************************************** 116*b4315fc7SSascha Wildner * 117*b4315fc7SSascha Wildner * Alternatively, you may choose to be licensed under the terms of the 118*b4315fc7SSascha Wildner * following license: 119*b4315fc7SSascha Wildner * 1200d02842fSSascha Wildner * Redistribution and use in source and binary forms, with or without 1210d02842fSSascha Wildner * modification, are permitted provided that the following conditions 1220d02842fSSascha Wildner * are met: 1230d02842fSSascha Wildner * 1. Redistributions of source code must retain the above copyright 1240d02842fSSascha Wildner * notice, this list of conditions, and the following disclaimer, 1250d02842fSSascha Wildner * without modification. 1260d02842fSSascha Wildner * 2. Redistributions in binary form must reproduce at minimum a disclaimer 1270d02842fSSascha Wildner * substantially similar to the "NO WARRANTY" disclaimer below 1280d02842fSSascha Wildner * ("Disclaimer") and any redistribution must be conditioned upon 1290d02842fSSascha Wildner * including a substantially similar Disclaimer requirement for further 1300d02842fSSascha Wildner * binary redistribution. 1310d02842fSSascha Wildner * 3. Neither the names of the above-listed copyright holders nor the names 1320d02842fSSascha Wildner * of any contributors may be used to endorse or promote products derived 1330d02842fSSascha Wildner * from this software without specific prior written permission. 1340d02842fSSascha Wildner * 135*b4315fc7SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 136*b4315fc7SSascha Wildner * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 137*b4315fc7SSascha Wildner * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 138*b4315fc7SSascha Wildner * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 139*b4315fc7SSascha Wildner * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 140*b4315fc7SSascha Wildner * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 141*b4315fc7SSascha Wildner * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 142*b4315fc7SSascha Wildner * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 143*b4315fc7SSascha Wildner * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 144*b4315fc7SSascha Wildner * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 145*b4315fc7SSascha Wildner * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 146*b4315fc7SSascha Wildner * 147*b4315fc7SSascha Wildner * Alternatively, you may choose to be licensed under the terms of the 1480d02842fSSascha Wildner * GNU General Public License ("GPL") version 2 as published by the Free 1490d02842fSSascha Wildner * Software Foundation. 1500d02842fSSascha Wildner * 151*b4315fc7SSascha Wildner *****************************************************************************/ 1520d02842fSSascha Wildner 1530d02842fSSascha Wildner #include "acpi.h" 1540d02842fSSascha Wildner #include "accommon.h" 1550d02842fSSascha Wildner #include "acinterp.h" 1560d02842fSSascha Wildner #include "acnamesp.h" 1570d02842fSSascha Wildner #include "actables.h" 1580d02842fSSascha Wildner #include "acdispat.h" 1590d02842fSSascha Wildner #include "acevents.h" 1600d02842fSSascha Wildner #include "amlcode.h" 1610d02842fSSascha Wildner 1620d02842fSSascha Wildner 1630d02842fSSascha Wildner #define _COMPONENT ACPI_EXECUTER 1640d02842fSSascha Wildner ACPI_MODULE_NAME ("exconfig") 1650d02842fSSascha Wildner 1660d02842fSSascha Wildner /* Local prototypes */ 1670d02842fSSascha Wildner 1680d02842fSSascha Wildner static ACPI_STATUS 1690d02842fSSascha Wildner AcpiExAddTable ( 1700d02842fSSascha Wildner UINT32 TableIndex, 1710d02842fSSascha Wildner ACPI_OPERAND_OBJECT **DdbHandle); 1720d02842fSSascha Wildner 1730d02842fSSascha Wildner static ACPI_STATUS 1740d02842fSSascha Wildner AcpiExRegionRead ( 1750d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc, 1760d02842fSSascha Wildner UINT32 Length, 1770d02842fSSascha Wildner UINT8 *Buffer); 1780d02842fSSascha Wildner 1790d02842fSSascha Wildner 1800d02842fSSascha Wildner /******************************************************************************* 1810d02842fSSascha Wildner * 1820d02842fSSascha Wildner * FUNCTION: AcpiExAddTable 1830d02842fSSascha Wildner * 1840d02842fSSascha Wildner * PARAMETERS: Table - Pointer to raw table 1850d02842fSSascha Wildner * ParentNode - Where to load the table (scope) 1860d02842fSSascha Wildner * DdbHandle - Where to return the table handle. 1870d02842fSSascha Wildner * 1880d02842fSSascha Wildner * RETURN: Status 1890d02842fSSascha Wildner * 1900d02842fSSascha Wildner * DESCRIPTION: Common function to Install and Load an ACPI table with a 1910d02842fSSascha Wildner * returned table handle. 1920d02842fSSascha Wildner * 1930d02842fSSascha Wildner ******************************************************************************/ 1940d02842fSSascha Wildner 1950d02842fSSascha Wildner static ACPI_STATUS 1960d02842fSSascha Wildner AcpiExAddTable ( 1970d02842fSSascha Wildner UINT32 TableIndex, 1980d02842fSSascha Wildner ACPI_OPERAND_OBJECT **DdbHandle) 1990d02842fSSascha Wildner { 2000d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc; 2010d02842fSSascha Wildner 2020d02842fSSascha Wildner 2030d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExAddTable); 2040d02842fSSascha Wildner 2050d02842fSSascha Wildner 2060d02842fSSascha Wildner /* Create an object to be the table handle */ 2070d02842fSSascha Wildner 2080d02842fSSascha Wildner ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE); 2090d02842fSSascha Wildner if (!ObjDesc) 2100d02842fSSascha Wildner { 2110d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY); 2120d02842fSSascha Wildner } 2130d02842fSSascha Wildner 2140d02842fSSascha Wildner /* Init the table handle */ 2150d02842fSSascha Wildner 2160d02842fSSascha Wildner ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID; 2170d02842fSSascha Wildner ObjDesc->Reference.Class = ACPI_REFCLASS_TABLE; 2180d02842fSSascha Wildner ObjDesc->Reference.Value = TableIndex; 219e5e174adSSascha Wildner *DdbHandle = ObjDesc; 2200d02842fSSascha Wildner return_ACPI_STATUS (AE_OK); 2210d02842fSSascha Wildner } 2220d02842fSSascha Wildner 2230d02842fSSascha Wildner 2240d02842fSSascha Wildner /******************************************************************************* 2250d02842fSSascha Wildner * 2260d02842fSSascha Wildner * FUNCTION: AcpiExLoadTableOp 2270d02842fSSascha Wildner * 2280d02842fSSascha Wildner * PARAMETERS: WalkState - Current state with operands 2290d02842fSSascha Wildner * ReturnDesc - Where to store the return object 2300d02842fSSascha Wildner * 2310d02842fSSascha Wildner * RETURN: Status 2320d02842fSSascha Wildner * 2330d02842fSSascha Wildner * DESCRIPTION: Load an ACPI table from the RSDT/XSDT 2340d02842fSSascha Wildner * 2350d02842fSSascha Wildner ******************************************************************************/ 2360d02842fSSascha Wildner 2370d02842fSSascha Wildner ACPI_STATUS 2380d02842fSSascha Wildner AcpiExLoadTableOp ( 2390d02842fSSascha Wildner ACPI_WALK_STATE *WalkState, 2400d02842fSSascha Wildner ACPI_OPERAND_OBJECT **ReturnDesc) 2410d02842fSSascha Wildner { 2420d02842fSSascha Wildner ACPI_STATUS Status; 2430d02842fSSascha Wildner ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 2440d02842fSSascha Wildner ACPI_NAMESPACE_NODE *ParentNode; 2450d02842fSSascha Wildner ACPI_NAMESPACE_NODE *StartNode; 2460d02842fSSascha Wildner ACPI_NAMESPACE_NODE *ParameterNode = NULL; 2470d02842fSSascha Wildner ACPI_OPERAND_OBJECT *DdbHandle; 2480d02842fSSascha Wildner UINT32 TableIndex; 2490d02842fSSascha Wildner 2500d02842fSSascha Wildner 2510d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExLoadTableOp); 2520d02842fSSascha Wildner 2530d02842fSSascha Wildner 2540d02842fSSascha Wildner /* Find the ACPI table in the RSDT/XSDT */ 2550d02842fSSascha Wildner 256e5e174adSSascha Wildner AcpiExExitInterpreter (); 2570d02842fSSascha Wildner Status = AcpiTbFindTable ( 2580d02842fSSascha Wildner Operand[0]->String.Pointer, 2590d02842fSSascha Wildner Operand[1]->String.Pointer, 2600d02842fSSascha Wildner Operand[2]->String.Pointer, &TableIndex); 261e5e174adSSascha Wildner AcpiExEnterInterpreter (); 2620d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 2630d02842fSSascha Wildner { 2640d02842fSSascha Wildner if (Status != AE_NOT_FOUND) 2650d02842fSSascha Wildner { 2660d02842fSSascha Wildner return_ACPI_STATUS (Status); 2670d02842fSSascha Wildner } 2680d02842fSSascha Wildner 2690d02842fSSascha Wildner /* Table not found, return an Integer=0 and AE_OK */ 2700d02842fSSascha Wildner 2710d02842fSSascha Wildner DdbHandle = AcpiUtCreateIntegerObject ((UINT64) 0); 2720d02842fSSascha Wildner if (!DdbHandle) 2730d02842fSSascha Wildner { 2740d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY); 2750d02842fSSascha Wildner } 2760d02842fSSascha Wildner 2770d02842fSSascha Wildner *ReturnDesc = DdbHandle; 2780d02842fSSascha Wildner return_ACPI_STATUS (AE_OK); 2790d02842fSSascha Wildner } 2800d02842fSSascha Wildner 2810d02842fSSascha Wildner /* Default nodes */ 2820d02842fSSascha Wildner 2830d02842fSSascha Wildner StartNode = WalkState->ScopeInfo->Scope.Node; 2840d02842fSSascha Wildner ParentNode = AcpiGbl_RootNode; 2850d02842fSSascha Wildner 2860d02842fSSascha Wildner /* RootPath (optional parameter) */ 2870d02842fSSascha Wildner 2880d02842fSSascha Wildner if (Operand[3]->String.Length > 0) 2890d02842fSSascha Wildner { 2900d02842fSSascha Wildner /* 2910d02842fSSascha Wildner * Find the node referenced by the RootPathString. This is the 2920d02842fSSascha Wildner * location within the namespace where the table will be loaded. 2930d02842fSSascha Wildner */ 294e5e174adSSascha Wildner Status = AcpiNsGetNodeUnlocked (StartNode, 295e5e174adSSascha Wildner Operand[3]->String.Pointer, ACPI_NS_SEARCH_PARENT, 296e5e174adSSascha Wildner &ParentNode); 2970d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 2980d02842fSSascha Wildner { 2990d02842fSSascha Wildner return_ACPI_STATUS (Status); 3000d02842fSSascha Wildner } 3010d02842fSSascha Wildner } 3020d02842fSSascha Wildner 3030d02842fSSascha Wildner /* ParameterPath (optional parameter) */ 3040d02842fSSascha Wildner 3050d02842fSSascha Wildner if (Operand[4]->String.Length > 0) 3060d02842fSSascha Wildner { 3070d02842fSSascha Wildner if ((Operand[4]->String.Pointer[0] != AML_ROOT_PREFIX) && 3080d02842fSSascha Wildner (Operand[4]->String.Pointer[0] != AML_PARENT_PREFIX)) 3090d02842fSSascha Wildner { 3100d02842fSSascha Wildner /* 3110d02842fSSascha Wildner * Path is not absolute, so it will be relative to the node 3120d02842fSSascha Wildner * referenced by the RootPathString (or the NS root if omitted) 3130d02842fSSascha Wildner */ 3140d02842fSSascha Wildner StartNode = ParentNode; 3150d02842fSSascha Wildner } 3160d02842fSSascha Wildner 3170d02842fSSascha Wildner /* Find the node referenced by the ParameterPathString */ 3180d02842fSSascha Wildner 319e5e174adSSascha Wildner Status = AcpiNsGetNodeUnlocked (StartNode, 320e5e174adSSascha Wildner Operand[4]->String.Pointer, ACPI_NS_SEARCH_PARENT, 321e5e174adSSascha Wildner &ParameterNode); 3220d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 3230d02842fSSascha Wildner { 3240d02842fSSascha Wildner return_ACPI_STATUS (Status); 3250d02842fSSascha Wildner } 3260d02842fSSascha Wildner } 3270d02842fSSascha Wildner 3280d02842fSSascha Wildner /* Load the table into the namespace */ 3290d02842fSSascha Wildner 330e5e174adSSascha Wildner ACPI_INFO (("Dynamic OEM Table Load:")); 331e5e174adSSascha Wildner AcpiExExitInterpreter (); 332e5e174adSSascha Wildner Status = AcpiTbLoadTable (TableIndex, ParentNode); 333e5e174adSSascha Wildner AcpiExEnterInterpreter (); 334e5e174adSSascha Wildner if (ACPI_FAILURE (Status)) 335e5e174adSSascha Wildner { 336e5e174adSSascha Wildner return_ACPI_STATUS (Status); 337e5e174adSSascha Wildner } 338e5e174adSSascha Wildner 339e5e174adSSascha Wildner Status = AcpiExAddTable (TableIndex, &DdbHandle); 3400d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 3410d02842fSSascha Wildner { 3420d02842fSSascha Wildner return_ACPI_STATUS (Status); 3430d02842fSSascha Wildner } 3440d02842fSSascha Wildner 3450d02842fSSascha Wildner /* Parameter Data (optional) */ 3460d02842fSSascha Wildner 3470d02842fSSascha Wildner if (ParameterNode) 3480d02842fSSascha Wildner { 3490d02842fSSascha Wildner /* Store the parameter data into the optional parameter object */ 3500d02842fSSascha Wildner 3510d02842fSSascha Wildner Status = AcpiExStore (Operand[5], 352820c5b08SSascha Wildner ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode), WalkState); 3530d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 3540d02842fSSascha Wildner { 3550d02842fSSascha Wildner (void) AcpiExUnloadTable (DdbHandle); 3560d02842fSSascha Wildner 3570d02842fSSascha Wildner AcpiUtRemoveReference (DdbHandle); 3580d02842fSSascha Wildner return_ACPI_STATUS (Status); 3590d02842fSSascha Wildner } 3600d02842fSSascha Wildner } 3610d02842fSSascha Wildner 3620d02842fSSascha Wildner *ReturnDesc = DdbHandle; 3630d02842fSSascha Wildner return_ACPI_STATUS (Status); 3640d02842fSSascha Wildner } 3650d02842fSSascha Wildner 3660d02842fSSascha Wildner 3670d02842fSSascha Wildner /******************************************************************************* 3680d02842fSSascha Wildner * 3690d02842fSSascha Wildner * FUNCTION: AcpiExRegionRead 3700d02842fSSascha Wildner * 3710d02842fSSascha Wildner * PARAMETERS: ObjDesc - Region descriptor 3720d02842fSSascha Wildner * Length - Number of bytes to read 3730d02842fSSascha Wildner * Buffer - Pointer to where to put the data 3740d02842fSSascha Wildner * 3750d02842fSSascha Wildner * RETURN: Status 3760d02842fSSascha Wildner * 3770d02842fSSascha Wildner * DESCRIPTION: Read data from an operation region. The read starts from the 3780d02842fSSascha Wildner * beginning of the region. 3790d02842fSSascha Wildner * 3800d02842fSSascha Wildner ******************************************************************************/ 3810d02842fSSascha Wildner 3820d02842fSSascha Wildner static ACPI_STATUS 3830d02842fSSascha Wildner AcpiExRegionRead ( 3840d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc, 3850d02842fSSascha Wildner UINT32 Length, 3860d02842fSSascha Wildner UINT8 *Buffer) 3870d02842fSSascha Wildner { 3880d02842fSSascha Wildner ACPI_STATUS Status; 3890d02842fSSascha Wildner UINT64 Value; 3900d02842fSSascha Wildner UINT32 RegionOffset = 0; 3910d02842fSSascha Wildner UINT32 i; 3920d02842fSSascha Wildner 3930d02842fSSascha Wildner 3940d02842fSSascha Wildner /* Bytewise reads */ 3950d02842fSSascha Wildner 3960d02842fSSascha Wildner for (i = 0; i < Length; i++) 3970d02842fSSascha Wildner { 3980d02842fSSascha Wildner Status = AcpiEvAddressSpaceDispatch (ObjDesc, NULL, ACPI_READ, 3990d02842fSSascha Wildner RegionOffset, 8, &Value); 4000d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 4010d02842fSSascha Wildner { 4020d02842fSSascha Wildner return (Status); 4030d02842fSSascha Wildner } 4040d02842fSSascha Wildner 4050d02842fSSascha Wildner *Buffer = (UINT8) Value; 4060d02842fSSascha Wildner Buffer++; 4070d02842fSSascha Wildner RegionOffset++; 4080d02842fSSascha Wildner } 4090d02842fSSascha Wildner 4100d02842fSSascha Wildner return (AE_OK); 4110d02842fSSascha Wildner } 4120d02842fSSascha Wildner 4130d02842fSSascha Wildner 4140d02842fSSascha Wildner /******************************************************************************* 4150d02842fSSascha Wildner * 4160d02842fSSascha Wildner * FUNCTION: AcpiExLoadOp 4170d02842fSSascha Wildner * 4180d02842fSSascha Wildner * PARAMETERS: ObjDesc - Region or Buffer/Field where the table will be 4190d02842fSSascha Wildner * obtained 4200d02842fSSascha Wildner * Target - Where a handle to the table will be stored 4210d02842fSSascha Wildner * WalkState - Current state 4220d02842fSSascha Wildner * 4230d02842fSSascha Wildner * RETURN: Status 4240d02842fSSascha Wildner * 4250d02842fSSascha Wildner * DESCRIPTION: Load an ACPI table from a field or operation region 4260d02842fSSascha Wildner * 4270d02842fSSascha Wildner * NOTE: Region Fields (Field, BankField, IndexFields) are resolved to buffer 4280d02842fSSascha Wildner * objects before this code is reached. 4290d02842fSSascha Wildner * 4300d02842fSSascha Wildner * If source is an operation region, it must refer to SystemMemory, as 4310d02842fSSascha Wildner * per the ACPI specification. 4320d02842fSSascha Wildner * 4330d02842fSSascha Wildner ******************************************************************************/ 4340d02842fSSascha Wildner 4350d02842fSSascha Wildner ACPI_STATUS 4360d02842fSSascha Wildner AcpiExLoadOp ( 4370d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc, 4380d02842fSSascha Wildner ACPI_OPERAND_OBJECT *Target, 4390d02842fSSascha Wildner ACPI_WALK_STATE *WalkState) 4400d02842fSSascha Wildner { 4410d02842fSSascha Wildner ACPI_OPERAND_OBJECT *DdbHandle; 442d4972a9cSSascha Wildner ACPI_TABLE_HEADER *TableHeader; 4430d02842fSSascha Wildner ACPI_TABLE_HEADER *Table; 4440d02842fSSascha Wildner UINT32 TableIndex; 4450d02842fSSascha Wildner ACPI_STATUS Status; 4460d02842fSSascha Wildner UINT32 Length; 4470d02842fSSascha Wildner 4480d02842fSSascha Wildner 4490d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExLoadOp); 4500d02842fSSascha Wildner 4510d02842fSSascha Wildner 4520d02842fSSascha Wildner /* Source Object can be either an OpRegion or a Buffer/Field */ 4530d02842fSSascha Wildner 4540d02842fSSascha Wildner switch (ObjDesc->Common.Type) 4550d02842fSSascha Wildner { 4560d02842fSSascha Wildner case ACPI_TYPE_REGION: 4570d02842fSSascha Wildner 4580d02842fSSascha Wildner ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 4590d02842fSSascha Wildner "Load table from Region %p\n", ObjDesc)); 4600d02842fSSascha Wildner 4610d02842fSSascha Wildner /* Region must be SystemMemory (from ACPI spec) */ 4620d02842fSSascha Wildner 4630d02842fSSascha Wildner if (ObjDesc->Region.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) 4640d02842fSSascha Wildner { 4650d02842fSSascha Wildner return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 4660d02842fSSascha Wildner } 4670d02842fSSascha Wildner 4680d02842fSSascha Wildner /* 469820c5b08SSascha Wildner * If the Region Address and Length have not been previously 470820c5b08SSascha Wildner * evaluated, evaluate them now and save the results. 4710d02842fSSascha Wildner */ 4720d02842fSSascha Wildner if (!(ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)) 4730d02842fSSascha Wildner { 4740d02842fSSascha Wildner Status = AcpiDsGetRegionArguments (ObjDesc); 4750d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 4760d02842fSSascha Wildner { 4770d02842fSSascha Wildner return_ACPI_STATUS (Status); 4780d02842fSSascha Wildner } 4790d02842fSSascha Wildner } 4800d02842fSSascha Wildner 4810d02842fSSascha Wildner /* Get the table header first so we can get the table length */ 4820d02842fSSascha Wildner 483d4972a9cSSascha Wildner TableHeader = ACPI_ALLOCATE (sizeof (ACPI_TABLE_HEADER)); 484d4972a9cSSascha Wildner if (!TableHeader) 4850d02842fSSascha Wildner { 4860d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY); 4870d02842fSSascha Wildner } 4880d02842fSSascha Wildner 4890d02842fSSascha Wildner Status = AcpiExRegionRead (ObjDesc, sizeof (ACPI_TABLE_HEADER), 490d4972a9cSSascha Wildner ACPI_CAST_PTR (UINT8, TableHeader)); 491d4972a9cSSascha Wildner Length = TableHeader->Length; 492d4972a9cSSascha Wildner ACPI_FREE (TableHeader); 4930d02842fSSascha Wildner 4940d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 4950d02842fSSascha Wildner { 4960d02842fSSascha Wildner return_ACPI_STATUS (Status); 4970d02842fSSascha Wildner } 4980d02842fSSascha Wildner 4990d02842fSSascha Wildner /* Must have at least an ACPI table header */ 5000d02842fSSascha Wildner 5010d02842fSSascha Wildner if (Length < sizeof (ACPI_TABLE_HEADER)) 5020d02842fSSascha Wildner { 5030d02842fSSascha Wildner return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); 5040d02842fSSascha Wildner } 5050d02842fSSascha Wildner 5060d02842fSSascha Wildner /* 5070d02842fSSascha Wildner * The original implementation simply mapped the table, with no copy. 5080d02842fSSascha Wildner * However, the memory region is not guaranteed to remain stable and 5090d02842fSSascha Wildner * we must copy the table to a local buffer. For example, the memory 5100d02842fSSascha Wildner * region is corrupted after suspend on some machines. Dynamically 5110d02842fSSascha Wildner * loaded tables are usually small, so this overhead is minimal. 5120d02842fSSascha Wildner * 5130d02842fSSascha Wildner * The latest implementation (5/2009) does not use a mapping at all. 5140d02842fSSascha Wildner * We use the low-level operation region interface to read the table 5150d02842fSSascha Wildner * instead of the obvious optimization of using a direct mapping. 5160d02842fSSascha Wildner * This maintains a consistent use of operation regions across the 5170d02842fSSascha Wildner * entire subsystem. This is important if additional processing must 5180d02842fSSascha Wildner * be performed in the (possibly user-installed) operation region 5190d02842fSSascha Wildner * handler. For example, AcpiExec and ASLTS depend on this. 5200d02842fSSascha Wildner */ 5210d02842fSSascha Wildner 5220d02842fSSascha Wildner /* Allocate a buffer for the table */ 5230d02842fSSascha Wildner 524d4972a9cSSascha Wildner Table = ACPI_ALLOCATE (Length); 525d4972a9cSSascha Wildner if (!Table) 5260d02842fSSascha Wildner { 5270d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY); 5280d02842fSSascha Wildner } 5290d02842fSSascha Wildner 5300d02842fSSascha Wildner /* Read the entire table */ 5310d02842fSSascha Wildner 5320d02842fSSascha Wildner Status = AcpiExRegionRead (ObjDesc, Length, 533d4972a9cSSascha Wildner ACPI_CAST_PTR (UINT8, Table)); 5340d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 5350d02842fSSascha Wildner { 536d4972a9cSSascha Wildner ACPI_FREE (Table); 5370d02842fSSascha Wildner return_ACPI_STATUS (Status); 5380d02842fSSascha Wildner } 5390d02842fSSascha Wildner break; 5400d02842fSSascha Wildner 5410d02842fSSascha Wildner case ACPI_TYPE_BUFFER: /* Buffer or resolved RegionField */ 5420d02842fSSascha Wildner 5430d02842fSSascha Wildner ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 5440d02842fSSascha Wildner "Load table from Buffer or Field %p\n", ObjDesc)); 5450d02842fSSascha Wildner 5460d02842fSSascha Wildner /* Must have at least an ACPI table header */ 5470d02842fSSascha Wildner 5480d02842fSSascha Wildner if (ObjDesc->Buffer.Length < sizeof (ACPI_TABLE_HEADER)) 5490d02842fSSascha Wildner { 5500d02842fSSascha Wildner return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); 5510d02842fSSascha Wildner } 5520d02842fSSascha Wildner 5530d02842fSSascha Wildner /* Get the actual table length from the table header */ 5540d02842fSSascha Wildner 555820c5b08SSascha Wildner TableHeader = ACPI_CAST_PTR ( 556820c5b08SSascha Wildner ACPI_TABLE_HEADER, ObjDesc->Buffer.Pointer); 557d4972a9cSSascha Wildner Length = TableHeader->Length; 5580d02842fSSascha Wildner 5590d02842fSSascha Wildner /* Table cannot extend beyond the buffer */ 5600d02842fSSascha Wildner 5610d02842fSSascha Wildner if (Length > ObjDesc->Buffer.Length) 5620d02842fSSascha Wildner { 5630d02842fSSascha Wildner return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); 5640d02842fSSascha Wildner } 5650d02842fSSascha Wildner if (Length < sizeof (ACPI_TABLE_HEADER)) 5660d02842fSSascha Wildner { 5670d02842fSSascha Wildner return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH); 5680d02842fSSascha Wildner } 5690d02842fSSascha Wildner 5700d02842fSSascha Wildner /* 571820c5b08SSascha Wildner * Copy the table from the buffer because the buffer could be 572820c5b08SSascha Wildner * modified or even deleted in the future 5730d02842fSSascha Wildner */ 574d4972a9cSSascha Wildner Table = ACPI_ALLOCATE (Length); 575d4972a9cSSascha Wildner if (!Table) 5760d02842fSSascha Wildner { 5770d02842fSSascha Wildner return_ACPI_STATUS (AE_NO_MEMORY); 5780d02842fSSascha Wildner } 5790d02842fSSascha Wildner 58025ca8c79SSascha Wildner memcpy (Table, TableHeader, Length); 5810d02842fSSascha Wildner break; 5820d02842fSSascha Wildner 5830d02842fSSascha Wildner default: 5840d02842fSSascha Wildner 5850d02842fSSascha Wildner return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 5860d02842fSSascha Wildner } 5870d02842fSSascha Wildner 5880d02842fSSascha Wildner /* Install the new table into the local data structures */ 5890d02842fSSascha Wildner 5907c9678bcSSascha Wildner ACPI_INFO (("Dynamic OEM Table Load:")); 591e5e174adSSascha Wildner AcpiExExitInterpreter (); 592a96e04f2SSascha Wildner Status = AcpiTbInstallAndLoadTable (ACPI_PTR_TO_PHYSADDR (Table), 593e5e174adSSascha Wildner ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL, TRUE, &TableIndex); 594e5e174adSSascha Wildner AcpiExEnterInterpreter (); 5950d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 5960d02842fSSascha Wildner { 5970d02842fSSascha Wildner /* Delete allocated table buffer */ 5980d02842fSSascha Wildner 599d4972a9cSSascha Wildner ACPI_FREE (Table); 600d4972a9cSSascha Wildner return_ACPI_STATUS (Status); 601d4972a9cSSascha Wildner } 602d4972a9cSSascha Wildner 603d4972a9cSSascha Wildner /* 6040d02842fSSascha Wildner * Add the table to the namespace. 6050d02842fSSascha Wildner * 6060d02842fSSascha Wildner * Note: Load the table objects relative to the root of the namespace. 6070d02842fSSascha Wildner * This appears to go against the ACPI specification, but we do it for 6080d02842fSSascha Wildner * compatibility with other ACPI implementations. 6090d02842fSSascha Wildner */ 610e5e174adSSascha Wildner Status = AcpiExAddTable (TableIndex, &DdbHandle); 6110d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 6120d02842fSSascha Wildner { 6130d02842fSSascha Wildner /* On error, TablePtr was deallocated above */ 6140d02842fSSascha Wildner 6150d02842fSSascha Wildner return_ACPI_STATUS (Status); 6160d02842fSSascha Wildner } 6170d02842fSSascha Wildner 6180d02842fSSascha Wildner /* Store the DdbHandle into the Target operand */ 6190d02842fSSascha Wildner 6200d02842fSSascha Wildner Status = AcpiExStore (DdbHandle, Target, WalkState); 6210d02842fSSascha Wildner if (ACPI_FAILURE (Status)) 6220d02842fSSascha Wildner { 6230d02842fSSascha Wildner (void) AcpiExUnloadTable (DdbHandle); 6240d02842fSSascha Wildner 6250d02842fSSascha Wildner /* TablePtr was deallocated above */ 6260d02842fSSascha Wildner 6270d02842fSSascha Wildner AcpiUtRemoveReference (DdbHandle); 6280d02842fSSascha Wildner return_ACPI_STATUS (Status); 6290d02842fSSascha Wildner } 6300d02842fSSascha Wildner 6310d02842fSSascha Wildner /* Remove the reference by added by AcpiExStore above */ 6320d02842fSSascha Wildner 6330d02842fSSascha Wildner AcpiUtRemoveReference (DdbHandle); 6340d02842fSSascha Wildner return_ACPI_STATUS (Status); 6350d02842fSSascha Wildner } 6360d02842fSSascha Wildner 6370d02842fSSascha Wildner 6380d02842fSSascha Wildner /******************************************************************************* 6390d02842fSSascha Wildner * 6400d02842fSSascha Wildner * FUNCTION: AcpiExUnloadTable 6410d02842fSSascha Wildner * 6420d02842fSSascha Wildner * PARAMETERS: DdbHandle - Handle to a previously loaded table 6430d02842fSSascha Wildner * 6440d02842fSSascha Wildner * RETURN: Status 6450d02842fSSascha Wildner * 6460d02842fSSascha Wildner * DESCRIPTION: Unload an ACPI table 6470d02842fSSascha Wildner * 6480d02842fSSascha Wildner ******************************************************************************/ 6490d02842fSSascha Wildner 6500d02842fSSascha Wildner ACPI_STATUS 6510d02842fSSascha Wildner AcpiExUnloadTable ( 6520d02842fSSascha Wildner ACPI_OPERAND_OBJECT *DdbHandle) 6530d02842fSSascha Wildner { 6540d02842fSSascha Wildner ACPI_STATUS Status = AE_OK; 6550d02842fSSascha Wildner ACPI_OPERAND_OBJECT *TableDesc = DdbHandle; 6560d02842fSSascha Wildner UINT32 TableIndex; 6570d02842fSSascha Wildner 6580d02842fSSascha Wildner 6590d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExUnloadTable); 6600d02842fSSascha Wildner 6610d02842fSSascha Wildner 6620d02842fSSascha Wildner /* 663d4972a9cSSascha Wildner * Temporarily emit a warning so that the ASL for the machine can be 664d4972a9cSSascha Wildner * hopefully obtained. This is to say that the Unload() operator is 665d4972a9cSSascha Wildner * extremely rare if not completely unused. 666d4972a9cSSascha Wildner */ 667d4972a9cSSascha Wildner ACPI_WARNING ((AE_INFO, 668d4972a9cSSascha Wildner "Received request to unload an ACPI table")); 669d4972a9cSSascha Wildner 670d4972a9cSSascha Wildner /* 6710d02842fSSascha Wildner * Validate the handle 6720d02842fSSascha Wildner * Although the handle is partially validated in AcpiExReconfiguration() 6730d02842fSSascha Wildner * when it calls AcpiExResolveOperands(), the handle is more completely 6740d02842fSSascha Wildner * validated here. 6750d02842fSSascha Wildner * 6760d02842fSSascha Wildner * Handle must be a valid operand object of type reference. Also, the 6770d02842fSSascha Wildner * DdbHandle must still be marked valid (table has not been previously 6780d02842fSSascha Wildner * unloaded) 6790d02842fSSascha Wildner */ 6800d02842fSSascha Wildner if ((!DdbHandle) || 6810d02842fSSascha Wildner (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) || 6820d02842fSSascha Wildner (DdbHandle->Common.Type != ACPI_TYPE_LOCAL_REFERENCE) || 6830d02842fSSascha Wildner (!(DdbHandle->Common.Flags & AOPOBJ_DATA_VALID))) 6840d02842fSSascha Wildner { 6850d02842fSSascha Wildner return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 6860d02842fSSascha Wildner } 6870d02842fSSascha Wildner 6880d02842fSSascha Wildner /* Get the table index from the DdbHandle */ 6890d02842fSSascha Wildner 6900d02842fSSascha Wildner TableIndex = TableDesc->Reference.Value; 6910d02842fSSascha Wildner 69296f24602SSascha Wildner /* 69396f24602SSascha Wildner * Release the interpreter lock so that the table lock won't have 69496f24602SSascha Wildner * strict order requirement against it. 69596f24602SSascha Wildner */ 69696f24602SSascha Wildner AcpiExExitInterpreter (); 697a96e04f2SSascha Wildner Status = AcpiTbUnloadTable (TableIndex); 69896f24602SSascha Wildner AcpiExEnterInterpreter (); 69996f24602SSascha Wildner 7000d02842fSSascha Wildner /* 7010d02842fSSascha Wildner * Invalidate the handle. We do this because the handle may be stored 7020d02842fSSascha Wildner * in a named object and may not be actually deleted until much later. 7030d02842fSSascha Wildner */ 70496f24602SSascha Wildner if (ACPI_SUCCESS (Status)) 70596f24602SSascha Wildner { 7060d02842fSSascha Wildner DdbHandle->Common.Flags &= ~AOPOBJ_DATA_VALID; 70796f24602SSascha Wildner } 70896f24602SSascha Wildner return_ACPI_STATUS (Status); 7090d02842fSSascha Wildner } 710