diff options
Diffstat (limited to 'source/tools/acpiexec/aehandlers.c')
| -rw-r--r-- | source/tools/acpiexec/aehandlers.c | 283 |
1 files changed, 231 insertions, 52 deletions
diff --git a/source/tools/acpiexec/aehandlers.c b/source/tools/acpiexec/aehandlers.c index aa6540d..b89a431 100644 --- a/source/tools/acpiexec/aehandlers.c +++ b/source/tools/acpiexec/aehandlers.c @@ -4,42 +4,114 @@ * *****************************************************************************/ -/* - * Copyright (C) 2000 - 2013, Intel Corp. +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2014, 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. - */ + * 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. + * + *****************************************************************************/ #include "aecommon.h" @@ -149,18 +221,22 @@ static AE_DEBUG_REGIONS AeRegions; BOOLEAN AcpiGbl_DisplayRegionAccess = FALSE; /* - * We will override some of the default region handlers, especially the - * SystemMemory handler, which must be implemented locally. Do not override - * the PCI_Config handler since we would like to exercise the default handler - * code. These handlers are installed "early" - before any _REG methods + * We will override some of the default region handlers, especially + * the SystemMemory handler, which must be implemented locally. + * These handlers are installed "early" - before any _REG methods * are executed - since they are special in the sense that the ACPI spec * declares that they must "always be available". Cannot override the * DataTable region handler either -- needed for test execution. + * + * NOTE: The local region handler will simulate access to these address + * spaces by creating a memory buffer behind each operation region. */ static ACPI_ADR_SPACE_TYPE DefaultSpaceIdList[] = { ACPI_ADR_SPACE_SYSTEM_MEMORY, - ACPI_ADR_SPACE_SYSTEM_IO + ACPI_ADR_SPACE_SYSTEM_IO, + ACPI_ADR_SPACE_PCI_CONFIG, + ACPI_ADR_SPACE_EC }; /* @@ -1152,13 +1228,20 @@ AeRegionHandler ( ACPI_OPERAND_OBJECT *RegionObject = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, RegionContext); UINT8 *Buffer = ACPI_CAST_PTR (UINT8, Value); + UINT8 *OldBuffer; + UINT8 *NewBuffer; ACPI_PHYSICAL_ADDRESS BaseAddress; + ACPI_PHYSICAL_ADDRESS BaseAddressEnd; + ACPI_PHYSICAL_ADDRESS RegionAddress; + ACPI_PHYSICAL_ADDRESS RegionAddressEnd; ACPI_SIZE Length; BOOLEAN BufferExists; + BOOLEAN BufferResize; AE_REGION *RegionElement; void *BufferValue; ACPI_STATUS Status; UINT32 ByteWidth; + UINT32 RegionLength; UINT32 i; UINT8 SpaceId; ACPI_CONNECTION_INFO *MyContext; @@ -1441,21 +1524,119 @@ AeRegionHandler ( * Search through the linked list for this region's buffer */ BufferExists = FALSE; + BufferResize = FALSE; RegionElement = AeRegions.RegionList; if (AeRegions.NumberOfRegions) { + BaseAddressEnd = BaseAddress + Length - 1; while (!BufferExists && RegionElement) { - if (RegionElement->Address == BaseAddress && - RegionElement->Length == Length && - RegionElement->SpaceId == SpaceId) + RegionAddress = RegionElement->Address; + RegionAddressEnd = RegionElement->Address + RegionElement->Length - 1; + RegionLength = RegionElement->Length; + + /* + * Overlapping Region Support + * + * While searching through the region buffer list, determine if an + * overlap exists between the requested buffer space and the current + * RegionElement space. If there is an overlap then replace the old + * buffer with a new buffer of increased size before continuing to + * do the read or write + */ + if (RegionElement->SpaceId != SpaceId || + BaseAddressEnd < RegionAddress || + BaseAddress > RegionAddressEnd) { - BufferExists = TRUE; + /* + * Requested buffer is outside of the current RegionElement + * bounds + */ + RegionElement = RegionElement->NextRegion; } else { - RegionElement = RegionElement->NextRegion; + /* + * Some amount of buffer space sharing exists. There are 4 cases + * to consider: + * + * 1. Right overlap + * 2. Left overlap + * 3. Left and right overlap + * 4. Fully contained - no resizing required + */ + BufferExists = TRUE; + + if ((BaseAddress >= RegionAddress) && + (BaseAddress <= RegionAddressEnd) && + (BaseAddressEnd > RegionAddressEnd)) + { + /* Right overlap */ + + RegionElement->Length = BaseAddress - + RegionAddress + Length; + BufferResize = TRUE; + } + + else if ((BaseAddressEnd >= RegionAddress) && + (BaseAddressEnd <= RegionAddressEnd) && + (BaseAddress < RegionAddress)) + { + /* Left overlap */ + + RegionElement->Address = BaseAddress; + RegionElement->Length = RegionAddress - + BaseAddress + RegionElement->Length; + BufferResize = TRUE; + } + + else if ((BaseAddress < RegionAddress) && + (BaseAddressEnd > RegionAddressEnd)) + { + /* Left and right overlap */ + + RegionElement->Address = BaseAddress; + RegionElement->Length = Length; + BufferResize = TRUE; + } + + /* + * only remaining case is fully contained for which we don't + * need to do anything + */ + if (BufferResize) + { + NewBuffer = AcpiOsAllocate (RegionElement->Length); + if (!NewBuffer) + { + return (AE_NO_MEMORY); + } + + OldBuffer = RegionElement->Buffer; + RegionElement->Buffer = NewBuffer; + NewBuffer = NULL; + + /* Initialize the region with the default fill value */ + + ACPI_MEMSET (RegionElement->Buffer, + AcpiGbl_RegionFillValue, RegionElement->Length); + + /* + * Get BufferValue to point (within the new buffer) to the + * base address of the old buffer + */ + BufferValue = (UINT8 *) RegionElement->Buffer + + (UINT64) RegionAddress - + (UINT64) RegionElement->Address; + + /* + * Copy the old buffer to its same location within the new + * buffer + */ + ACPI_MEMCPY (BufferValue, OldBuffer, RegionLength); + AcpiOsFree (OldBuffer); + } } } } @@ -1465,9 +1646,8 @@ AeRegionHandler ( */ if (!BufferExists) { - /* - * Do the memory allocations first - */ + /* Do the memory allocations first */ + RegionElement = AcpiOsAllocate (sizeof (AE_REGION)); if (!RegionElement) { @@ -1492,8 +1672,8 @@ AeRegionHandler ( /* * Increment the number of regions and put this one - * at the head of the list as it will probably get accessed - * more often anyway. + * at the head of the list as it will probably get accessed + * more often anyway. */ AeRegions.NumberOfRegions += 1; @@ -1505,9 +1685,8 @@ AeRegionHandler ( AeRegions.RegionList = RegionElement; } - /* - * Calculate the size of the memory copy - */ + /* Calculate the size of the memory copy */ + ByteWidth = (BitWidth / 8); if (BitWidth % 8) |
