diff options
Diffstat (limited to 'sys/contrib/dev/acpica/tbrsdt.c')
| -rw-r--r-- | sys/contrib/dev/acpica/tbrsdt.c | 407 |
1 files changed, 407 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/tbrsdt.c b/sys/contrib/dev/acpica/tbrsdt.c new file mode 100644 index 0000000..06204f4 --- /dev/null +++ b/sys/contrib/dev/acpica/tbrsdt.c @@ -0,0 +1,407 @@ +/****************************************************************************** + * + * Module Name: tbrsdt - ACPI RSDT table utilities + * $Revision: 2 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 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 __TBRSDT_C__ + +#include "acpi.h" +#include "actables.h" + + +#define _COMPONENT ACPI_TABLES + ACPI_MODULE_NAME ("tbrsdt") + + +/******************************************************************************* + * + * FUNCTION: AcpiTbVerifyRsdp + * + * PARAMETERS: Address - RSDP (Pointer to RSDT) + * + * RETURN: Status + * + * DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table) + * + ******************************************************************************/ + +ACPI_STATUS +AcpiTbVerifyRsdp ( + ACPI_POINTER *Address) +{ + ACPI_TABLE_DESC TableInfo; + ACPI_STATUS Status; + RSDP_DESCRIPTOR *Rsdp; + + + ACPI_FUNCTION_TRACE ("TbVerifyRsdp"); + + + switch (Address->PointerType) + { + case ACPI_LOGICAL_POINTER: + + Rsdp = Address->Pointer.Logical; + break; + + case ACPI_PHYSICAL_POINTER: + /* + * Obtain access to the RSDP structure + */ + Status = AcpiOsMapMemory (Address->Pointer.Physical, sizeof (RSDP_DESCRIPTOR), + (void **) &Rsdp); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + break; + + default: + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + /* + * The signature and checksum must both be correct + */ + if (ACPI_STRNCMP ((NATIVE_CHAR *) Rsdp, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) + { + /* Nope, BAD Signature */ + + Status = AE_BAD_SIGNATURE; + goto Cleanup; + } + + /* Check the standard checksum */ + + if (AcpiTbChecksum (Rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) + { + Status = AE_BAD_CHECKSUM; + goto Cleanup; + } + + /* Check extended checksum if table version >= 2 */ + + if (Rsdp->Revision >= 2) + { + if (AcpiTbChecksum (Rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0) + { + Status = AE_BAD_CHECKSUM; + goto Cleanup; + } + } + + /* The RSDP supplied is OK */ + + TableInfo.Pointer = ACPI_CAST_PTR (ACPI_TABLE_HEADER, Rsdp); + TableInfo.Length = sizeof (RSDP_DESCRIPTOR); + TableInfo.Allocation = ACPI_MEM_MAPPED; + TableInfo.BasePointer = Rsdp; + + /* Save the table pointers and allocation info */ + + Status = AcpiTbInitTableDescriptor (ACPI_TABLE_RSDP, &TableInfo); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* Save the RSDP in a global for easy access */ + + AcpiGbl_RSDP = ACPI_CAST_PTR (RSDP_DESCRIPTOR, TableInfo.Pointer); + return_ACPI_STATUS (Status); + + + /* Error exit */ +Cleanup: + + if (AcpiGbl_TableFlags & ACPI_PHYSICAL_POINTER) + { + AcpiOsUnmapMemory (Rsdp, sizeof (RSDP_DESCRIPTOR)); + } + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiTbGetRsdtAddress + * + * PARAMETERS: None + * + * RETURN: RSDT physical address + * + * DESCRIPTION: Extract the address of the RSDT or XSDT, depending on the + * version of the RSDP + * + ******************************************************************************/ + +void +AcpiTbGetRsdtAddress ( + ACPI_POINTER *OutAddress) +{ + + ACPI_FUNCTION_ENTRY (); + + + OutAddress->PointerType = AcpiGbl_TableFlags | ACPI_LOGICAL_ADDRESSING; + + /* + * For RSDP revision 0 or 1, we use the RSDT. + * For RSDP revision 2 (and above), we use the XSDT + */ + if (AcpiGbl_RSDP->Revision < 2) + { + OutAddress->Pointer.Value = AcpiGbl_RSDP->RsdtPhysicalAddress; + } + else + { + OutAddress->Pointer.Value = ACPI_GET_ADDRESS (AcpiGbl_RSDP->XsdtPhysicalAddress); + } +} + + +/******************************************************************************* + * + * FUNCTION: AcpiTbValidateRsdt + * + * PARAMETERS: TablePtr - Addressable pointer to the RSDT. + * + * RETURN: Status + * + * DESCRIPTION: Validate signature for the RSDT or XSDT + * + ******************************************************************************/ + +ACPI_STATUS +AcpiTbValidateRsdt ( + ACPI_TABLE_HEADER *TablePtr) +{ + int NoMatch; + + + ACPI_FUNCTION_NAME ("TbValidateRsdt"); + + + /* + * For RSDP revision 0 or 1, we use the RSDT. + * For RSDP revision 2 and above, we use the XSDT + */ + if (AcpiGbl_RSDP->Revision < 2) + { + NoMatch = ACPI_STRNCMP ((char *) TablePtr, RSDT_SIG, + sizeof (RSDT_SIG) -1); + } + else + { + NoMatch = ACPI_STRNCMP ((char *) TablePtr, XSDT_SIG, + sizeof (XSDT_SIG) -1); + } + + if (NoMatch) + { + /* Invalid RSDT or XSDT signature */ + + ACPI_REPORT_ERROR (("Invalid signature where RSDP indicates RSDT/XSDT should be located\n")); + + ACPI_DUMP_BUFFER (AcpiGbl_RSDP, 20); + + ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, + "RSDT/XSDT signature at %X (%p) is invalid\n", + AcpiGbl_RSDP->RsdtPhysicalAddress, + (void *) (NATIVE_UINT) AcpiGbl_RSDP->RsdtPhysicalAddress)); + + return (AE_BAD_SIGNATURE); + } + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiTbGetTableRsdt + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table) + * + ******************************************************************************/ + +ACPI_STATUS +AcpiTbGetTableRsdt ( + void) +{ + ACPI_TABLE_DESC TableInfo; + ACPI_STATUS Status; + ACPI_POINTER Address; + + + ACPI_FUNCTION_TRACE ("TbGetTableRsdt"); + + + /* Get the RSDT/XSDT via the RSDP */ + + AcpiTbGetRsdtAddress (&Address); + + Status = AcpiTbGetTable (&Address, &TableInfo); + if (ACPI_FAILURE (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not get the RSDT/XSDT, %s\n", + AcpiFormatException (Status))); + return_ACPI_STATUS (Status); + } + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, + "RSDP located at %p, points to RSDT physical=%8.8X%8.8X \n", + AcpiGbl_RSDP, + ACPI_HIDWORD (Address.Pointer.Value), + ACPI_LODWORD (Address.Pointer.Value))); + + /* Check the RSDT or XSDT signature */ + + Status = AcpiTbValidateRsdt (TableInfo.Pointer); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Get the number of tables defined in the RSDT or XSDT */ + + AcpiGbl_RsdtTableCount = AcpiTbGetTableCount (AcpiGbl_RSDP, TableInfo.Pointer); + + /* Convert and/or copy to an XSDT structure */ + + Status = AcpiTbConvertToXsdt (&TableInfo); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Save the table pointers and allocation info */ + + Status = AcpiTbInitTableDescriptor (ACPI_TABLE_XSDT, &TableInfo); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + AcpiGbl_XSDT = (XSDT_DESCRIPTOR *) TableInfo.Pointer; + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "XSDT located at %p\n", AcpiGbl_XSDT)); + return_ACPI_STATUS (Status); +} + + |
