/******************************************************************************
*
* Module Name: utaddress - OpRegion address range check
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2018, 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_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;
}
}