/****************************************************************************** * * Module Name: utaddress - OpRegion address range check * *****************************************************************************/ /* * Copyright (C) 2000 - 2016, Intel Corp. * All rights reserved. * * 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. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * 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 MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. */ #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_STATUS Status; 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; Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { ACPI_FREE (RangeInfo); return_ACPI_STATUS (Status); } 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))); (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 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; } }