| /****************************************************************************** |
| * |
| * 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; |
| } |
| } |
