/****************************************************************************** * * Module Name: oswintbl - Windows OSL for obtaining ACPI tables * *****************************************************************************/ /* * 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 "acutils.h" #include #ifdef WIN32 #pragma warning(disable:4115) /* warning C4115: (caused by rpcasync.h) */ #include #elif WIN64 #include #endif #define _COMPONENT ACPI_OS_SERVICES ACPI_MODULE_NAME ("oswintbl") /* Local prototypes */ static char * WindowsFormatException ( LONG WinStatus); /* Globals */ #define LOCAL_BUFFER_SIZE 64 static char KeyBuffer[LOCAL_BUFFER_SIZE]; static char ErrorBuffer[LOCAL_BUFFER_SIZE]; /* * Tables supported in the Windows registry. SSDTs are not placed into * the registry, a limitation. */ static char *SupportedTables[] = { "DSDT", "RSDT", "FACS", "FACP" }; /* Max index for table above */ #define ACPI_OS_MAX_TABLE_INDEX 3 /****************************************************************************** * * FUNCTION: WindowsFormatException * * PARAMETERS: WinStatus - Status from a Windows system call * * RETURN: Formatted (ascii) exception code. Front-end to Windows * FormatMessage interface. * * DESCRIPTION: Decode a windows exception * *****************************************************************************/ static char * WindowsFormatException ( LONG WinStatus) { ErrorBuffer[0] = 0; FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, WinStatus, 0, ErrorBuffer, LOCAL_BUFFER_SIZE, NULL); return (ErrorBuffer); } /****************************************************************************** * * FUNCTION: AcpiOsGetTableByAddress * * PARAMETERS: Address - Physical address of the ACPI table * Table - Where a pointer to the table is returned * * RETURN: Status; Table buffer is returned if AE_OK. * AE_NOT_FOUND: A valid table was not found at the address * * DESCRIPTION: Get an ACPI table via a physical memory address. * * NOTE: Cannot be implemented without a Windows device driver. * *****************************************************************************/ ACPI_STATUS AcpiOsGetTableByAddress ( ACPI_PHYSICAL_ADDRESS Address, ACPI_TABLE_HEADER **Table) { fprintf (stderr, "Get table by address is not supported on Windows\n"); return (AE_SUPPORT); } /****************************************************************************** * * FUNCTION: AcpiOsGetTableByIndex * * PARAMETERS: Index - Which table to get * Table - Where a pointer to the table is returned * Instance - Where a pointer to the table instance no. is * returned * Address - Where the table physical address is returned * * RETURN: Status; Table buffer and physical address returned if AE_OK. * AE_LIMIT: Index is beyond valid limit * * DESCRIPTION: Get an ACPI table via an index value (0 through n). Returns * AE_LIMIT when an invalid index is reached. Index is not * necessarily an index into the RSDT/XSDT. * Table is obtained from the Windows registry. * * NOTE: Cannot get the physical address from the windows registry; * zero is returned instead. * *****************************************************************************/ ACPI_STATUS AcpiOsGetTableByIndex ( UINT32 Index, ACPI_TABLE_HEADER **Table, UINT32 *Instance, ACPI_PHYSICAL_ADDRESS *Address) { ACPI_STATUS Status; if (Index > ACPI_OS_MAX_TABLE_INDEX) { return (AE_LIMIT); } Status = AcpiOsGetTableByName (SupportedTables[Index], 0, Table, Address); return (Status); } /****************************************************************************** * * FUNCTION: AcpiOsGetTableByName * * PARAMETERS: Signature - ACPI Signature for desired table. Must be * a null terminated 4-character string. * Instance - For SSDTs (0...n). Use 0 otherwise. * Table - Where a pointer to the table is returned * Address - Where the table physical address is returned * * RETURN: Status; Table buffer and physical address returned if AE_OK. * AE_LIMIT: Instance is beyond valid limit * AE_NOT_FOUND: A table with the signature was not found * * DESCRIPTION: Get an ACPI table via a table signature (4 ASCII characters). * Returns AE_LIMIT when an invalid instance is reached. * Table is obtained from the Windows registry. * * NOTE: Assumes the input signature is uppercase. * Cannot get the physical address from the windows registry; * zero is returned instead. * *****************************************************************************/ ACPI_STATUS AcpiOsGetTableByName ( char *Signature, UINT32 Instance, ACPI_TABLE_HEADER **Table, ACPI_PHYSICAL_ADDRESS *Address) { HKEY Handle = NULL; LONG WinStatus; ULONG Type; ULONG NameSize; ULONG DataSize; HKEY SubKey; ULONG i; ACPI_TABLE_HEADER *ReturnTable; ACPI_STATUS Status = AE_OK; /* * Windows has no SSDTs in the registry, so multiple instances are * not supported. */ if (Instance > 0) { return (AE_LIMIT); } /* Get a handle to the table key */ while (1) { strcpy (KeyBuffer, "HARDWARE\\ACPI\\"); if (AcpiUtSafeStrcat (KeyBuffer, sizeof (KeyBuffer), Signature)) { return (AE_BUFFER_OVERFLOW); } WinStatus = RegOpenKeyEx (HKEY_LOCAL_MACHINE, KeyBuffer, 0L, KEY_READ, &Handle); if (WinStatus != ERROR_SUCCESS) { /* * Somewhere along the way, MS changed the registry entry for * the FADT from * HARDWARE/ACPI/FACP to * HARDWARE/ACPI/FADT. * * This code allows for both. */ if (ACPI_COMPARE_NAME (Signature, "FACP")) { Signature = "FADT"; } else if (ACPI_COMPARE_NAME (Signature, "XSDT")) { Signature = "RSDT"; } else { fprintf (stderr, "Could not find %s in registry at %s: %s (WinStatus=0x%X)\n", Signature, KeyBuffer, WindowsFormatException (WinStatus), WinStatus); return (AE_NOT_FOUND); } } else { break; } } /* Actual data for the table is down a couple levels */ for (i = 0; ;) { WinStatus = RegEnumKey (Handle, i, KeyBuffer, sizeof (KeyBuffer)); i++; if (WinStatus == ERROR_NO_MORE_ITEMS) { break; } WinStatus = RegOpenKey (Handle, KeyBuffer, &SubKey); if (WinStatus != ERROR_SUCCESS) { fprintf (stderr, "Could not open %s entry: %s\n", Signature, WindowsFormatException (WinStatus)); Status = AE_ERROR; goto Cleanup; } RegCloseKey (Handle); Handle = SubKey; i = 0; } /* Find the (binary) table entry */ for (i = 0; ; i++) { NameSize = sizeof (KeyBuffer); WinStatus = RegEnumValue (Handle, i, KeyBuffer, &NameSize, NULL, &Type, NULL, 0); if (WinStatus != ERROR_SUCCESS) { fprintf (stderr, "Could not get %s registry entry: %s\n", Signature, WindowsFormatException (WinStatus)); Status = AE_ERROR; goto Cleanup; } if (Type == REG_BINARY) { break; } } /* Get the size of the table */ WinStatus = RegQueryValueEx (Handle, KeyBuffer, NULL, NULL, NULL, &DataSize); if (WinStatus != ERROR_SUCCESS) { fprintf (stderr, "Could not read the %s table size: %s\n", Signature, WindowsFormatException (WinStatus)); Status = AE_ERROR; goto Cleanup; } /* Allocate a new buffer for the table */ ReturnTable = malloc (DataSize); if (!ReturnTable) { Status = AE_NO_MEMORY; goto Cleanup; } /* Get the actual table from the registry */ WinStatus = RegQueryValueEx (Handle, KeyBuffer, NULL, NULL, (UCHAR *) ReturnTable, &DataSize); if (WinStatus != ERROR_SUCCESS) { fprintf (stderr, "Could not read %s data: %s\n", Signature, WindowsFormatException (WinStatus)); free (ReturnTable); Status = AE_ERROR; goto Cleanup; } *Table = ReturnTable; *Address = 0; Cleanup: RegCloseKey (Handle); return (Status); } /* These are here for acpidump only, so we don't need to link oswinxf */ #ifdef ACPI_DUMP_APP /****************************************************************************** * * FUNCTION: AcpiOsMapMemory * * PARAMETERS: Where - Physical address of memory to be mapped * Length - How much memory to map * * RETURN: Pointer to mapped memory. Null on error. * * DESCRIPTION: Map physical memory into caller's address space * *****************************************************************************/ void * AcpiOsMapMemory ( ACPI_PHYSICAL_ADDRESS Where, ACPI_SIZE Length) { return (ACPI_TO_POINTER ((ACPI_SIZE) Where)); } /****************************************************************************** * * FUNCTION: AcpiOsUnmapMemory * * PARAMETERS: Where - Logical address of memory to be unmapped * Length - How much memory to unmap * * RETURN: None. * * DESCRIPTION: Delete a previously created mapping. Where and Length must * correspond to a previous mapping exactly. * *****************************************************************************/ void AcpiOsUnmapMemory ( void *Where, ACPI_SIZE Length) { return; } #endif