diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/utilities/utaddress.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/utilities/utaddress.c | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/utilities/utaddress.c b/sys/contrib/dev/acpica/components/utilities/utaddress.c new file mode 100644 index 0000000..ca73b69 --- /dev/null +++ b/sys/contrib/dev/acpica/components/utilities/utaddress.c @@ -0,0 +1,322 @@ +/****************************************************************************** + * + * Module Name: utaddress - OpRegion address range check + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, 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. + */ + +#define __UTADDRESS_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/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%p-0x%p\n", + AcpiUtGetNodeName (RangeInfo->RegionNode), + ACPI_CAST_PTR (void, Address), + ACPI_CAST_PTR (void, 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%p-0x%p\n", + AcpiUtGetNodeName (RangeInfo->RegionNode), + ACPI_CAST_PTR (void, RangeInfo->StartAddress), + ACPI_CAST_PTR (void, 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 AddressRange. + * 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 = AcpiNsGetExternalPathname (RangeInfo->RegionNode); + + ACPI_WARNING ((AE_INFO, + "0x%p-0x%p %s conflicts with Region %s %d", + ACPI_CAST_PTR (void, Address), + ACPI_CAST_PTR (void, EndAddress), + AcpiUtGetRegionName (SpaceId), Pathname, OverlapCount)); + 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; + } +} |
