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Diffstat (limited to 'sys/contrib/dev/acpica/tbxfroot.c')
| -rw-r--r-- | sys/contrib/dev/acpica/tbxfroot.c | 611 |
1 files changed, 611 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/tbxfroot.c b/sys/contrib/dev/acpica/tbxfroot.c new file mode 100644 index 0000000..f6ba0ea --- /dev/null +++ b/sys/contrib/dev/acpica/tbxfroot.c @@ -0,0 +1,611 @@ +/****************************************************************************** + * + * Module Name: tbxfroot - Find the root ACPI table (RSDT) + * $Revision: 65 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp. + * All rights reserved. + * + * 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. + * + *****************************************************************************/ + +#define __TBXFROOT_C__ + +#include "acpi.h" +#include "actables.h" + + +#define _COMPONENT ACPI_TABLES + ACPI_MODULE_NAME ("tbxfroot") + + +/******************************************************************************* + * + * FUNCTION: AcpiTbFindTable + * + * PARAMETERS: Signature - String with ACPI table signature + * OemId - String with the table OEM ID + * OemTableId - String with the OEM Table ID. + * + * RETURN: Status + * + * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the + * Signature, OEM ID and OEM Table ID. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiTbFindTable ( + NATIVE_CHAR *Signature, + NATIVE_CHAR *OemId, + NATIVE_CHAR *OemTableId, + ACPI_TABLE_HEADER **TablePtr) +{ + ACPI_STATUS Status; + ACPI_TABLE_HEADER *Table; + + + ACPI_FUNCTION_TRACE ("TbFindTable"); + + + /* Validate string lengths */ + + if ((ACPI_STRLEN (Signature) > ACPI_NAME_SIZE) || + (ACPI_STRLEN (OemId) > sizeof (Table->OemId)) || + (ACPI_STRLEN (OemTableId) > sizeof (Table->OemTableId))) + { + return_ACPI_STATUS (AE_AML_STRING_LIMIT); + } + + /* Find the table */ + + Status = AcpiGetFirmwareTable (Signature, 1, + ACPI_LOGICAL_ADDRESSING, &Table); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Check OemId and OemTableId */ + + if ((OemId[0] && ACPI_STRCMP (OemId, Table->OemId)) || + (OemTableId[0] && ACPI_STRCMP (OemTableId, Table->OemTableId))) + { + return_ACPI_STATUS (AE_AML_NAME_NOT_FOUND); + } + + *TablePtr = Table; + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiGetFirmwareTable + * + * PARAMETERS: Signature - Any ACPI table signature + * Instance - the non zero instance of the table, allows + * support for multiple tables of the same type + * Flags - Physical/Virtual support + * RetBuffer - pointer to a structure containing a buffer to + * receive the table + * + * RETURN: Status + * + * DESCRIPTION: This function is called to get an ACPI table. The caller + * supplies an OutBuffer large enough to contain the entire ACPI + * table. Upon completion + * the OutBuffer->Length field will indicate the number of bytes + * copied into the OutBuffer->BufPtr buffer. This table will be + * a complete table including the header. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiGetFirmwareTable ( + ACPI_STRING Signature, + UINT32 Instance, + UINT32 Flags, + ACPI_TABLE_HEADER **TablePointer) +{ + ACPI_POINTER RsdpAddress; + ACPI_POINTER Address; + ACPI_STATUS Status; + ACPI_TABLE_HEADER Header; + ACPI_TABLE_DESC TableInfo; + ACPI_TABLE_DESC RsdtInfo; + UINT32 TableCount; + UINT32 i; + UINT32 j; + + + ACPI_FUNCTION_TRACE ("AcpiGetFirmwareTable"); + + + /* + * Ensure that at least the table manager is initialized. We don't + * require that the entire ACPI subsystem is up for this interface + */ + + /* + * If we have a buffer, we must have a length too + */ + if ((Instance == 0) || + (!Signature) || + (!TablePointer)) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + RsdtInfo.Pointer = NULL; + + if (!AcpiGbl_RSDP) + { + /* Get the RSDP */ + + Status = AcpiOsGetRootPointer (Flags, &RsdpAddress); + if (ACPI_FAILURE (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "RSDP not found\n")); + return_ACPI_STATUS (AE_NO_ACPI_TABLES); + } + + /* Map and validate the RSDP */ + + if ((Flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) + { + Status = AcpiOsMapMemory (RsdpAddress.Pointer.Physical, sizeof (RSDP_DESCRIPTOR), + (void **) &AcpiGbl_RSDP); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + else + { + AcpiGbl_RSDP = RsdpAddress.Pointer.Logical; + } + + /* + * The signature and checksum must both be correct + */ + if (ACPI_STRNCMP ((NATIVE_CHAR *) AcpiGbl_RSDP, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) + { + /* Nope, BAD Signature */ + + return_ACPI_STATUS (AE_BAD_SIGNATURE); + } + + if (AcpiTbChecksum (AcpiGbl_RSDP, ACPI_RSDP_CHECKSUM_LENGTH) != 0) + { + /* Nope, BAD Checksum */ + + return_ACPI_STATUS (AE_BAD_CHECKSUM); + } + } + + /* Get the RSDT and validate it */ + + AcpiTbGetRsdtAddress (&Address); + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, + "RSDP located at %p, RSDT physical=%8.8X%8.8X \n", + AcpiGbl_RSDP, + ACPI_HIDWORD (Address.Pointer.Value), + ACPI_LODWORD (Address.Pointer.Value))); + + /* Insert ProcessorMode flags */ + + Address.PointerType |= Flags; + + Status = AcpiTbGetTable (&Address, &RsdtInfo); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + Status = AcpiTbValidateRsdt (RsdtInfo.Pointer); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* Get the number of table pointers within the RSDT */ + + TableCount = AcpiTbGetTableCount (AcpiGbl_RSDP, RsdtInfo.Pointer); + + Address.PointerType = AcpiGbl_TableFlags | Flags; + + /* + * Search the RSDT/XSDT for the correct instance of the + * requested table + */ + for (i = 0, j = 0; i < TableCount; i++) + { + /* Get the next table pointer, handle RSDT vs. XSDT */ + + if (AcpiGbl_RSDP->Revision < 2) + { + Address.Pointer.Value = ((RSDT_DESCRIPTOR *) RsdtInfo.Pointer)->TableOffsetEntry[i]; + } + else + { + Address.Pointer.Value = ACPI_GET_ADDRESS ( + ((XSDT_DESCRIPTOR *) RsdtInfo.Pointer)->TableOffsetEntry[i]); + } + + /* Get the table header */ + + Status = AcpiTbGetTableHeader (&Address, &Header); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* Compare table signatures and table instance */ + + if (!ACPI_STRNCMP (Header.Signature, Signature, ACPI_NAME_SIZE)) + { + /* An instance of the table was found */ + + j++; + if (j >= Instance) + { + /* Found the correct instance, get the entire table */ + + Status = AcpiTbGetTableBody (&Address, &Header, &TableInfo); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + *TablePointer = TableInfo.Pointer; + goto Cleanup; + } + } + } + + /* Did not find the table */ + + Status = AE_NOT_EXIST; + + +Cleanup: + AcpiOsUnmapMemory (RsdtInfo.Pointer, (ACPI_SIZE) RsdtInfo.Pointer->Length); + return_ACPI_STATUS (Status); +} + + +/* TBD: Move to a new file */ + +#if ACPI_MACHINE_WIDTH != 16 + +/******************************************************************************* + * + * FUNCTION: AcpiFindRootPointer + * + * PARAMETERS: **RsdpAddress - Where to place the RSDP address + * Flags - Logical/Physical addressing + * + * RETURN: Status, Physical address of the RSDP + * + * DESCRIPTION: Find the RSDP + * + ******************************************************************************/ + +ACPI_STATUS +AcpiFindRootPointer ( + UINT32 Flags, + ACPI_POINTER *RsdpAddress) +{ + ACPI_TABLE_DESC TableInfo; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE ("AcpiFindRootPointer"); + + + /* Get the RSDP */ + + Status = AcpiTbFindRsdp (&TableInfo, Flags); + if (ACPI_FAILURE (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "RSDP structure not found, %s Flags=%X\n", + AcpiFormatException (Status), Flags)); + return_ACPI_STATUS (AE_NO_ACPI_TABLES); + } + + RsdpAddress->PointerType = ACPI_PHYSICAL_POINTER; + RsdpAddress->Pointer.Physical = TableInfo.PhysicalAddress; + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiTbScanMemoryForRsdp + * + * PARAMETERS: StartAddress - Starting pointer for search + * Length - Maximum length to search + * + * RETURN: Pointer to the RSDP if found, otherwise NULL. + * + * DESCRIPTION: Search a block of memory for the RSDP signature + * + ******************************************************************************/ + +UINT8 * +AcpiTbScanMemoryForRsdp ( + UINT8 *StartAddress, + UINT32 Length) +{ + UINT32 Offset; + UINT8 *MemRover; + + + ACPI_FUNCTION_TRACE ("TbScanMemoryForRsdp"); + + + /* Search from given start addr for the requested length */ + + for (Offset = 0, MemRover = StartAddress; + Offset < Length; + Offset += RSDP_SCAN_STEP, MemRover += RSDP_SCAN_STEP) + { + + /* The signature and checksum must both be correct */ + + if (ACPI_STRNCMP ((NATIVE_CHAR *) MemRover, + RSDP_SIG, sizeof (RSDP_SIG)-1) == 0 && + AcpiTbChecksum (MemRover, ACPI_RSDP_CHECKSUM_LENGTH) == 0) + { + /* If so, we have found the RSDP */ + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, + "RSDP located at physical address %p\n",MemRover)); + return_PTR (MemRover); + } + } + + /* Searched entire block, no RSDP was found */ + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO,"Searched entire block, no RSDP was found.\n")); + return_PTR (NULL); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiTbFindRsdp + * + * PARAMETERS: *TableInfo - Where the table info is returned + * Flags - Current memory mode (logical vs. + * physical addressing) + * + * RETURN: Status + * + * DESCRIPTION: Search lower 1Mbyte of memory for the root system descriptor + * pointer structure. If it is found, set *RSDP to point to it. + * + * NOTE: The RSDP must be either in the first 1K of the Extended + * BIOS Data Area or between E0000 and FFFFF (ACPI 1.0 section + * 5.2.2; assertion #421). + * + ******************************************************************************/ + +ACPI_STATUS +AcpiTbFindRsdp ( + ACPI_TABLE_DESC *TableInfo, + UINT32 Flags) +{ + UINT8 *TablePtr; + UINT8 *MemRover; + UINT64 PhysAddr; + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE ("TbFindRsdp"); + + + /* + * Scan supports either 1) Logical addressing or 2) Physical addressing + */ + if ((Flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) + { + /* + * 1) Search EBDA (low memory) paragraphs + */ + Status = AcpiOsMapMemory ((UINT64) LO_RSDP_WINDOW_BASE, LO_RSDP_WINDOW_SIZE, + (void **) &TablePtr); + if (ACPI_FAILURE (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %X for length %X\n", + LO_RSDP_WINDOW_BASE, LO_RSDP_WINDOW_SIZE)); + return_ACPI_STATUS (Status); + } + + MemRover = AcpiTbScanMemoryForRsdp (TablePtr, LO_RSDP_WINDOW_SIZE); + AcpiOsUnmapMemory (TablePtr, LO_RSDP_WINDOW_SIZE); + + if (MemRover) + { + /* Found it, return the physical address */ + + PhysAddr = LO_RSDP_WINDOW_BASE; + PhysAddr += ACPI_PTR_DIFF (MemRover,TablePtr); + + TableInfo->PhysicalAddress = PhysAddr; + return_ACPI_STATUS (AE_OK); + } + + /* + * 2) Search upper memory: 16-byte boundaries in E0000h-F0000h + */ + Status = AcpiOsMapMemory ((UINT64) HI_RSDP_WINDOW_BASE, HI_RSDP_WINDOW_SIZE, + (void **) &TablePtr); + if (ACPI_FAILURE (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %X for length %X\n", + HI_RSDP_WINDOW_BASE, HI_RSDP_WINDOW_SIZE)); + return_ACPI_STATUS (Status); + } + + MemRover = AcpiTbScanMemoryForRsdp (TablePtr, HI_RSDP_WINDOW_SIZE); + AcpiOsUnmapMemory (TablePtr, HI_RSDP_WINDOW_SIZE); + + if (MemRover) + { + /* Found it, return the physical address */ + + PhysAddr = HI_RSDP_WINDOW_BASE; + PhysAddr += ACPI_PTR_DIFF (MemRover, TablePtr); + + TableInfo->PhysicalAddress = PhysAddr; + return_ACPI_STATUS (AE_OK); + } + } + + /* + * Physical addressing + */ + else + { + /* + * 1) Search EBDA (low memory) paragraphs + */ + MemRover = AcpiTbScanMemoryForRsdp (ACPI_PHYSADDR_TO_PTR (LO_RSDP_WINDOW_BASE), + LO_RSDP_WINDOW_SIZE); + if (MemRover) + { + /* Found it, return the physical address */ + + TableInfo->PhysicalAddress = ACPI_TO_INTEGER (MemRover); + return_ACPI_STATUS (AE_OK); + } + + /* + * 2) Search upper memory: 16-byte boundaries in E0000h-F0000h + */ + MemRover = AcpiTbScanMemoryForRsdp (ACPI_PHYSADDR_TO_PTR (HI_RSDP_WINDOW_BASE), + HI_RSDP_WINDOW_SIZE); + if (MemRover) + { + /* Found it, return the physical address */ + + TableInfo->PhysicalAddress = ACPI_TO_INTEGER (MemRover); + return_ACPI_STATUS (AE_OK); + } + } + + /* RSDP signature was not found */ + + return_ACPI_STATUS (AE_NOT_FOUND); +} + +#endif + |
