/****************************************************************************** * * Module Name: utaddress - OpRegion address range check * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include "acpi.h" #include "accommon.h" #include "acnamesp.h" #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME ("utaddress") /******************************************************************************* * * FUNCTION: AcpiUtAddAddressRange * * PARAMETERS: SpaceId - Address space ID * Address - OpRegion start address * Length - OpRegion length * RegionNode - OpRegion namespace node * * RETURN: Status * * DESCRIPTION: Add the Operation Region address range to the global list. * The only supported Space IDs are Memory and I/O. Called when * the OpRegion address/length operands are fully evaluated. * * MUTEX: Locks the namespace * * NOTE: Because this interface is only called when an OpRegion argument * list is evaluated, there cannot be any duplicate RegionNodes. * Duplicate Address/Length values are allowed, however, so that multiple * address conflicts can be detected. * ******************************************************************************/ ACPI_STATUS AcpiUtAddAddressRange ( ACPI_ADR_SPACE_TYPE SpaceId, ACPI_PHYSICAL_ADDRESS Address, UINT32 Length, ACPI_NAMESPACE_NODE *RegionNode) { ACPI_ADDRESS_RANGE *RangeInfo; ACPI_FUNCTION_TRACE (UtAddAddressRange); if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) { return_ACPI_STATUS (AE_OK); } /* Allocate/init a new info block, add it to the appropriate list */ RangeInfo = ACPI_ALLOCATE (sizeof (ACPI_ADDRESS_RANGE)); if (!RangeInfo) { return_ACPI_STATUS (AE_NO_MEMORY); } RangeInfo->StartAddress = Address; RangeInfo->EndAddress = (Address + Length - 1); RangeInfo->RegionNode = RegionNode; RangeInfo->Next = AcpiGbl_AddressRangeList[SpaceId]; AcpiGbl_AddressRangeList[SpaceId] = RangeInfo; ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "\nAdded [%4.4s] address range: 0x%8.8X%8.8X-0x%8.8X%8.8X\n", AcpiUtGetNodeName (RangeInfo->RegionNode), ACPI_FORMAT_UINT64 (Address), ACPI_FORMAT_UINT64 (RangeInfo->EndAddress))); return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiUtRemoveAddressRange * * PARAMETERS: SpaceId - Address space ID * RegionNode - OpRegion namespace node * * RETURN: None * * DESCRIPTION: Remove the Operation Region from the global list. The only * supported Space IDs are Memory and I/O. Called when an * OpRegion is deleted. * * MUTEX: Assumes the namespace is locked * ******************************************************************************/ void AcpiUtRemoveAddressRange ( ACPI_ADR_SPACE_TYPE SpaceId, ACPI_NAMESPACE_NODE *RegionNode) { ACPI_ADDRESS_RANGE *RangeInfo; ACPI_ADDRESS_RANGE *Prev; ACPI_FUNCTION_TRACE (UtRemoveAddressRange); if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) { return_VOID; } /* Get the appropriate list head and check the list */ RangeInfo = Prev = AcpiGbl_AddressRangeList[SpaceId]; while (RangeInfo) { if (RangeInfo->RegionNode == RegionNode) { if (RangeInfo == Prev) /* Found at list head */ { AcpiGbl_AddressRangeList[SpaceId] = RangeInfo->Next; } else { Prev->Next = RangeInfo->Next; } ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "\nRemoved [%4.4s] address range: 0x%8.8X%8.8X-0x%8.8X%8.8X\n", AcpiUtGetNodeName (RangeInfo->RegionNode), ACPI_FORMAT_UINT64 (RangeInfo->StartAddress), ACPI_FORMAT_UINT64 (RangeInfo->EndAddress))); ACPI_FREE (RangeInfo); return_VOID; } Prev = RangeInfo; RangeInfo = RangeInfo->Next; } return_VOID; } /******************************************************************************* * * FUNCTION: AcpiUtCheckAddressRange * * PARAMETERS: SpaceId - Address space ID * Address - Start address * Length - Length of address range * Warn - TRUE if warning on overlap desired * * RETURN: Count of the number of conflicts detected. Zero is always * returned for Space IDs other than Memory or I/O. * * DESCRIPTION: Check if the input address range overlaps any of the * ASL operation region address ranges. The only supported * Space IDs are Memory and I/O. * * MUTEX: Assumes the namespace is locked. * ******************************************************************************/ UINT32 AcpiUtCheckAddressRange ( ACPI_ADR_SPACE_TYPE SpaceId, ACPI_PHYSICAL_ADDRESS Address, UINT32 Length, BOOLEAN Warn) { ACPI_ADDRESS_RANGE *RangeInfo; ACPI_PHYSICAL_ADDRESS EndAddress; char *Pathname; UINT32 OverlapCount = 0; ACPI_FUNCTION_TRACE (UtCheckAddressRange); if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) { return_UINT32 (0); } RangeInfo = AcpiGbl_AddressRangeList[SpaceId]; EndAddress = Address + Length - 1; /* Check entire list for all possible conflicts */ while (RangeInfo) { /* * Check if the requested address/length overlaps this * address range. There are four cases to consider: * * 1) Input address/length is contained completely in the * address range * 2) Input address/length overlaps range at the range start * 3) Input address/length overlaps range at the range end * 4) Input address/length completely encompasses the range */ if ((Address <= RangeInfo->EndAddress) && (EndAddress >= RangeInfo->StartAddress)) { /* Found an address range overlap */ OverlapCount++; if (Warn) /* Optional warning message */ { Pathname = AcpiNsGetNormalizedPathname (RangeInfo->RegionNode, TRUE); ACPI_WARNING ((AE_INFO, "%s range 0x%8.8X%8.8X-0x%8.8X%8.8X conflicts with OpRegion 0x%8.8X%8.8X-0x%8.8X%8.8X (%s)", AcpiUtGetRegionName (SpaceId), ACPI_FORMAT_UINT64 (Address), ACPI_FORMAT_UINT64 (EndAddress), ACPI_FORMAT_UINT64 (RangeInfo->StartAddress), ACPI_FORMAT_UINT64 (RangeInfo->EndAddress), Pathname)); ACPI_FREE (Pathname); } } RangeInfo = RangeInfo->Next; } return_UINT32 (OverlapCount); } /******************************************************************************* * * FUNCTION: AcpiUtDeleteAddressLists * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Delete all global address range lists (called during * subsystem shutdown). * ******************************************************************************/ void AcpiUtDeleteAddressLists ( void) { ACPI_ADDRESS_RANGE *Next; ACPI_ADDRESS_RANGE *RangeInfo; int i; /* Delete all elements in all address range lists */ for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) { Next = AcpiGbl_AddressRangeList[i]; while (Next) { RangeInfo = Next; Next = RangeInfo->Next; ACPI_FREE (RangeInfo); } AcpiGbl_AddressRangeList[i] = NULL; } }