| /****************************************************************************** |
| * |
| * Module Name: osbsdtbl - BSD 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 "acpidump.h" |
| |
| #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| #include <kenv.h> |
| #endif |
| #include <unistd.h> |
| #include <sys/param.h> |
| #include <sys/sysctl.h> |
| |
| |
| #define _COMPONENT ACPI_OS_SERVICES |
| ACPI_MODULE_NAME ("osbsdtbl") |
| |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| OslTableInitialize ( |
| void); |
| |
| static ACPI_STATUS |
| OslMapTable ( |
| ACPI_SIZE Address, |
| char *Signature, |
| ACPI_TABLE_HEADER **Table); |
| |
| static ACPI_STATUS |
| OslAddTablesToList ( |
| void); |
| |
| static ACPI_STATUS |
| OslGetTableViaRoot ( |
| char *Signature, |
| UINT32 Instance, |
| ACPI_TABLE_HEADER **Table, |
| ACPI_PHYSICAL_ADDRESS *Address); |
| |
| |
| /* Hints for RSDP */ |
| #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) |
| #define SYSTEM_KENV "hint.acpi.0.rsdp" |
| #define SYSTEM_SYSCTL "machdep.acpi_root" |
| #elif defined(__NetBSD__) |
| #define SYSTEM_SYSCTL "hw.acpi.root" |
| #endif |
| |
| /* Initialization flags */ |
| |
| UINT8 Gbl_TableListInitialized = FALSE; |
| UINT8 Gbl_MainTableObtained = FALSE; |
| |
| /* Local copies of main ACPI tables */ |
| |
| ACPI_TABLE_RSDP Gbl_Rsdp; |
| ACPI_TABLE_FADT *Gbl_Fadt; |
| ACPI_TABLE_RSDT *Gbl_Rsdt; |
| ACPI_TABLE_XSDT *Gbl_Xsdt; |
| |
| /* Fadt address */ |
| |
| ACPI_PHYSICAL_ADDRESS Gbl_FadtAddress; |
| |
| /* Revision of RSD PTR */ |
| |
| UINT8 Gbl_Revision; |
| |
| /* List of information about obtained ACPI tables */ |
| |
| typedef struct table_info |
| { |
| struct table_info *Next; |
| char Signature[4]; |
| UINT32 Instance; |
| ACPI_PHYSICAL_ADDRESS Address; |
| |
| } OSL_TABLE_INFO; |
| |
| OSL_TABLE_INFO *Gbl_TableListHead = NULL; |
| |
| |
| /****************************************************************************** |
| * |
| * 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. |
| * |
| *****************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiOsGetTableByAddress ( |
| ACPI_PHYSICAL_ADDRESS Address, |
| ACPI_TABLE_HEADER **Table) |
| { |
| ACPI_TABLE_HEADER *MappedTable; |
| ACPI_TABLE_HEADER *LocalTable; |
| ACPI_STATUS Status; |
| |
| |
| /* Validate the input physical address to avoid program crash */ |
| |
| if (Address < ACPI_HI_RSDP_WINDOW_BASE) |
| { |
| fprintf (stderr, "Invalid table address: 0x%8.8X%8.8X\n", |
| ACPI_FORMAT_UINT64 (Address)); |
| return (AE_BAD_ADDRESS); |
| } |
| |
| /* Map the table and validate it */ |
| |
| Status = OslMapTable (Address, NULL, &MappedTable); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* Copy table to local buffer and return it */ |
| |
| LocalTable = calloc (1, MappedTable->Length); |
| if (!LocalTable) |
| { |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| return (AE_NO_MEMORY); |
| } |
| |
| memcpy (LocalTable, MappedTable, MappedTable->Length); |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| |
| *Table = LocalTable; |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsGetTableByName |
| * |
| * PARAMETERS: Signature - ACPI Signature for desired table. Must be |
| * a null terminated 4-character string. |
| * Instance - Multiple table support for SSDT/UEFI (0...n) |
| * Must be 0 for other tables. |
| * 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 |
| * |
| * NOTE: Assumes the input signature is uppercase. |
| * |
| *****************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiOsGetTableByName ( |
| char *Signature, |
| UINT32 Instance, |
| ACPI_TABLE_HEADER **Table, |
| ACPI_PHYSICAL_ADDRESS *Address) |
| { |
| ACPI_STATUS Status; |
| |
| |
| /* Instance is only valid for SSDT/UEFI tables */ |
| |
| if (Instance && |
| !ACPI_COMPARE_NAME (Signature, ACPI_SIG_SSDT) && |
| !ACPI_COMPARE_NAME (Signature, ACPI_SIG_UEFI)) |
| { |
| return (AE_LIMIT); |
| } |
| |
| /* Initialize main tables */ |
| |
| Status = OslTableInitialize (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* |
| * If one of the main ACPI tables was requested (RSDT/XSDT/FADT), |
| * simply return it immediately. |
| */ |
| if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_XSDT)) |
| { |
| if (!Gbl_Revision) |
| { |
| return (AE_NOT_FOUND); |
| } |
| |
| *Address = Gbl_Rsdp.XsdtPhysicalAddress; |
| *Table = (ACPI_TABLE_HEADER *) Gbl_Xsdt; |
| return (AE_OK); |
| } |
| |
| if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_RSDT)) |
| { |
| if (!Gbl_Rsdp.RsdtPhysicalAddress) |
| { |
| return (AE_NOT_FOUND); |
| } |
| |
| *Address = Gbl_Rsdp.RsdtPhysicalAddress; |
| *Table = (ACPI_TABLE_HEADER *) Gbl_Rsdt; |
| return (AE_OK); |
| } |
| |
| if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_FADT)) |
| { |
| *Address = Gbl_FadtAddress; |
| *Table = (ACPI_TABLE_HEADER *) Gbl_Fadt; |
| return (AE_OK); |
| } |
| |
| /* Not a main ACPI table, attempt to extract it from the RSDT/XSDT */ |
| |
| Status = OslGetTableViaRoot (Signature, Instance, Table, Address); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * 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. |
| * |
| *****************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiOsGetTableByIndex ( |
| UINT32 Index, |
| ACPI_TABLE_HEADER **Table, |
| UINT32 *Instance, |
| ACPI_PHYSICAL_ADDRESS *Address) |
| { |
| OSL_TABLE_INFO *Info; |
| ACPI_STATUS Status; |
| UINT32 i; |
| |
| |
| /* Initialize main tables */ |
| |
| Status = OslTableInitialize (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* Add all tables to list */ |
| |
| Status = OslAddTablesToList (); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* Validate Index */ |
| |
| if (Index >= Gbl_TableListHead->Instance) |
| { |
| return (AE_LIMIT); |
| } |
| |
| /* Point to the table list entry specified by the Index argument */ |
| |
| Info = Gbl_TableListHead; |
| for (i = 0; i <= Index; i++) |
| { |
| Info = Info->Next; |
| } |
| |
| /* Now we can just get the table via the address or name */ |
| |
| if (Info->Address) |
| { |
| Status = AcpiOsGetTableByAddress (Info->Address, Table); |
| if (ACPI_SUCCESS (Status)) |
| { |
| *Address = Info->Address; |
| } |
| } |
| else |
| { |
| Status = AcpiOsGetTableByName (Info->Signature, Info->Instance, |
| Table, Address); |
| } |
| |
| if (ACPI_SUCCESS (Status)) |
| { |
| *Instance = Info->Instance; |
| } |
| return (Status); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: OslTableInitialize |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Initialize ACPI table data. Get and store main ACPI tables to |
| * local variables. Main ACPI tables include RSDP, FADT, RSDT, |
| * and/or XSDT. |
| * |
| *****************************************************************************/ |
| |
| static ACPI_STATUS |
| OslTableInitialize ( |
| void) |
| { |
| #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| char Buffer[32]; |
| #endif |
| ACPI_TABLE_HEADER *MappedTable; |
| UINT8 *TableAddress; |
| UINT8 *RsdpAddress; |
| ACPI_PHYSICAL_ADDRESS RsdpBase; |
| ACPI_SIZE RsdpSize; |
| ACPI_STATUS Status; |
| u_long Address = 0; |
| size_t Length = sizeof (Address); |
| |
| |
| /* Get main ACPI tables from memory on first invocation of this function */ |
| |
| if (Gbl_MainTableObtained) |
| { |
| return (AE_OK); |
| } |
| |
| /* Attempt to use kenv or sysctl to find RSD PTR record. */ |
| |
| if (Gbl_RsdpBase) |
| { |
| Address = Gbl_RsdpBase; |
| } |
| #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| else if (kenv (KENV_GET, SYSTEM_KENV, Buffer, sizeof (Buffer)) > 0) |
| { |
| Address = strtoul (Buffer, NULL, 0); |
| } |
| #endif |
| if (!Address) |
| { |
| if (sysctlbyname (SYSTEM_SYSCTL, &Address, &Length, NULL, 0) != 0) |
| { |
| Address = 0; |
| } |
| } |
| if (Address) |
| { |
| RsdpBase = Address; |
| RsdpSize = sizeof (Gbl_Rsdp); |
| } |
| else |
| { |
| RsdpBase = ACPI_HI_RSDP_WINDOW_BASE; |
| RsdpSize = ACPI_HI_RSDP_WINDOW_SIZE; |
| } |
| |
| /* Get RSDP from memory */ |
| |
| RsdpAddress = AcpiOsMapMemory (RsdpBase, RsdpSize); |
| if (!RsdpAddress) |
| { |
| return (AE_BAD_ADDRESS); |
| } |
| |
| /* Search low memory for the RSDP */ |
| |
| TableAddress = AcpiTbScanMemoryForRsdp (RsdpAddress, RsdpSize); |
| if (!TableAddress) |
| { |
| AcpiOsUnmapMemory (RsdpAddress, RsdpSize); |
| return (AE_ERROR); |
| } |
| |
| memcpy (&Gbl_Rsdp, TableAddress, sizeof (Gbl_Rsdp)); |
| AcpiOsUnmapMemory (RsdpAddress, RsdpSize); |
| |
| /* Get XSDT from memory */ |
| |
| if (Gbl_Rsdp.Revision) |
| { |
| Status = OslMapTable (Gbl_Rsdp.XsdtPhysicalAddress, |
| ACPI_SIG_XSDT, &MappedTable); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| Gbl_Revision = 2; |
| Gbl_Xsdt = calloc (1, MappedTable->Length); |
| if (!Gbl_Xsdt) |
| { |
| fprintf (stderr, |
| "XSDT: Could not allocate buffer for table of length %X\n", |
| MappedTable->Length); |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| return (AE_NO_MEMORY); |
| } |
| |
| memcpy (Gbl_Xsdt, MappedTable, MappedTable->Length); |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| } |
| |
| /* Get RSDT from memory */ |
| |
| if (Gbl_Rsdp.RsdtPhysicalAddress) |
| { |
| Status = OslMapTable (Gbl_Rsdp.RsdtPhysicalAddress, |
| ACPI_SIG_RSDT, &MappedTable); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| Gbl_Rsdt = calloc (1, MappedTable->Length); |
| if (!Gbl_Rsdt) |
| { |
| fprintf (stderr, |
| "RSDT: Could not allocate buffer for table of length %X\n", |
| MappedTable->Length); |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| return (AE_NO_MEMORY); |
| } |
| |
| memcpy (Gbl_Rsdt, MappedTable, MappedTable->Length); |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| } |
| |
| /* Get FADT from memory */ |
| |
| if (Gbl_Revision) |
| { |
| Gbl_FadtAddress = Gbl_Xsdt->TableOffsetEntry[0]; |
| } |
| else |
| { |
| Gbl_FadtAddress = Gbl_Rsdt->TableOffsetEntry[0]; |
| } |
| |
| if (!Gbl_FadtAddress) |
| { |
| fprintf(stderr, "FADT: Table could not be found\n"); |
| return (AE_ERROR); |
| } |
| |
| Status = OslMapTable (Gbl_FadtAddress, ACPI_SIG_FADT, &MappedTable); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| Gbl_Fadt = calloc (1, MappedTable->Length); |
| if (!Gbl_Fadt) |
| { |
| fprintf (stderr, |
| "FADT: Could not allocate buffer for table of length %X\n", |
| MappedTable->Length); |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| return (AE_NO_MEMORY); |
| } |
| |
| memcpy (Gbl_Fadt, MappedTable, MappedTable->Length); |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| Gbl_MainTableObtained = TRUE; |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: OslGetTableViaRoot |
| * |
| * PARAMETERS: Signature - ACPI Signature for common table. Must be |
| * a null terminated 4-character string. |
| * Instance - Multiple table support for SSDT/UEFI (0...n) |
| * Must be 0 for other tables. |
| * 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 the root table (RSDT/XSDT) |
| * |
| * NOTE: Assumes the input signature is uppercase. |
| * |
| *****************************************************************************/ |
| |
| static ACPI_STATUS |
| OslGetTableViaRoot ( |
| char *Signature, |
| UINT32 Instance, |
| ACPI_TABLE_HEADER **Table, |
| ACPI_PHYSICAL_ADDRESS *Address) |
| { |
| ACPI_TABLE_HEADER *LocalTable = NULL; |
| ACPI_TABLE_HEADER *MappedTable = NULL; |
| UINT8 NumberOfTables; |
| UINT32 CurrentInstance = 0; |
| ACPI_PHYSICAL_ADDRESS TableAddress = 0; |
| ACPI_STATUS Status; |
| UINT32 i; |
| |
| |
| /* DSDT and FACS address must be extracted from the FADT */ |
| |
| if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_DSDT) || |
| ACPI_COMPARE_NAME (Signature, ACPI_SIG_FACS)) |
| { |
| /* |
| * Get the appropriate address, either 32-bit or 64-bit. Be very |
| * careful about the FADT length and validate table addresses. |
| * Note: The 64-bit addresses have priority. |
| */ |
| if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_DSDT)) |
| { |
| if ((Gbl_Fadt->Header.Length >= MIN_FADT_FOR_XDSDT) && |
| Gbl_Fadt->XDsdt) |
| { |
| TableAddress = (ACPI_PHYSICAL_ADDRESS) Gbl_Fadt->XDsdt; |
| } |
| else if ((Gbl_Fadt->Header.Length >= MIN_FADT_FOR_DSDT) && |
| Gbl_Fadt->Dsdt) |
| { |
| TableAddress = (ACPI_PHYSICAL_ADDRESS) Gbl_Fadt->Dsdt; |
| } |
| } |
| else /* FACS */ |
| { |
| if ((Gbl_Fadt->Header.Length >= MIN_FADT_FOR_XFACS) && |
| Gbl_Fadt->XFacs) |
| { |
| TableAddress = (ACPI_PHYSICAL_ADDRESS) Gbl_Fadt->XFacs; |
| } |
| else if ((Gbl_Fadt->Header.Length >= MIN_FADT_FOR_FACS) && |
| Gbl_Fadt->Facs) |
| { |
| TableAddress = (ACPI_PHYSICAL_ADDRESS) Gbl_Fadt->Facs; |
| } |
| } |
| } |
| else /* Case for a normal ACPI table */ |
| { |
| if (Gbl_Revision) |
| { |
| NumberOfTables = |
| (Gbl_Xsdt->Header.Length - sizeof (Gbl_Xsdt->Header)) |
| / sizeof (Gbl_Xsdt->TableOffsetEntry[0]); |
| } |
| else /* Use RSDT if XSDT is not available */ |
| { |
| NumberOfTables = |
| (Gbl_Rsdt->Header.Length - sizeof (Gbl_Rsdt->Header)) |
| / sizeof (Gbl_Rsdt->TableOffsetEntry[0]); |
| } |
| |
| /* Search RSDT/XSDT for the requested table */ |
| |
| for (i = 0; i < NumberOfTables; i++) |
| { |
| if (Gbl_Revision) |
| { |
| TableAddress = Gbl_Xsdt->TableOffsetEntry[i]; |
| } |
| else |
| { |
| TableAddress = Gbl_Rsdt->TableOffsetEntry[i]; |
| } |
| |
| MappedTable = AcpiOsMapMemory (TableAddress, sizeof (*MappedTable)); |
| if (!MappedTable) |
| { |
| return (AE_BAD_ADDRESS); |
| } |
| |
| /* Does this table match the requested signature? */ |
| |
| if (ACPI_COMPARE_NAME (MappedTable->Signature, Signature)) |
| { |
| |
| /* Match table instance (for SSDT/UEFI tables) */ |
| |
| if (CurrentInstance == Instance) |
| { |
| AcpiOsUnmapMemory (MappedTable, sizeof (*MappedTable)); |
| break; |
| } |
| |
| CurrentInstance++; |
| } |
| |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| TableAddress = 0; |
| } |
| } |
| |
| if (!TableAddress) |
| { |
| if (CurrentInstance) |
| { |
| return (AE_LIMIT); |
| } |
| return (AE_NOT_FOUND); |
| } |
| |
| /* Now we can get the requested table */ |
| |
| Status = OslMapTable (TableAddress, Signature, &MappedTable); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* Copy table to local buffer and return it */ |
| |
| LocalTable = calloc (1, MappedTable->Length); |
| if (!LocalTable) |
| { |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| return (AE_NO_MEMORY); |
| } |
| |
| memcpy (LocalTable, MappedTable, MappedTable->Length); |
| AcpiOsUnmapMemory (MappedTable, MappedTable->Length); |
| *Table = LocalTable; |
| *Address = TableAddress; |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: OslAddTablesToList |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status; Table list is initialized if AE_OK. |
| * |
| * DESCRIPTION: Add ACPI tables to the table list. |
| * |
| *****************************************************************************/ |
| |
| static ACPI_STATUS |
| OslAddTablesToList( |
| void) |
| { |
| ACPI_PHYSICAL_ADDRESS TableAddress; |
| OSL_TABLE_INFO *Info = NULL; |
| OSL_TABLE_INFO *NewInfo; |
| ACPI_TABLE_HEADER *Table; |
| UINT8 Instance; |
| UINT8 NumberOfTables; |
| int i; |
| |
| |
| /* Initialize the table list on first invocation */ |
| |
| if (Gbl_TableListInitialized) |
| { |
| return (AE_OK); |
| } |
| |
| /* Add mandatory tables to global table list first */ |
| |
| for (i = 0; i < 4; i++) |
| { |
| NewInfo = calloc (1, sizeof (*NewInfo)); |
| if (!NewInfo) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| switch (i) { |
| case 0: |
| |
| Gbl_TableListHead = Info = NewInfo; |
| continue; |
| |
| case 1: |
| |
| ACPI_MOVE_NAME (NewInfo->Signature, |
| Gbl_Revision ? ACPI_SIG_XSDT : ACPI_SIG_RSDT); |
| break; |
| |
| case 2: |
| |
| ACPI_MOVE_NAME (NewInfo->Signature, ACPI_SIG_FACS); |
| break; |
| |
| default: |
| |
| ACPI_MOVE_NAME (NewInfo->Signature, ACPI_SIG_DSDT); |
| |
| } |
| |
| Info->Next = NewInfo; |
| Info = NewInfo; |
| Gbl_TableListHead->Instance++; |
| } |
| |
| /* Add normal tables from RSDT/XSDT to global list */ |
| |
| if (Gbl_Revision) |
| { |
| NumberOfTables = |
| (Gbl_Xsdt->Header.Length - sizeof (Gbl_Xsdt->Header)) |
| / sizeof (Gbl_Xsdt->TableOffsetEntry[0]); |
| } |
| else |
| { |
| NumberOfTables = |
| (Gbl_Rsdt->Header.Length - sizeof (Gbl_Rsdt->Header)) |
| / sizeof (Gbl_Rsdt->TableOffsetEntry[0]); |
| } |
| |
| for (i = 0; i < NumberOfTables; i++) |
| { |
| if (Gbl_Revision) |
| { |
| TableAddress = Gbl_Xsdt->TableOffsetEntry[i]; |
| } |
| else |
| { |
| TableAddress = Gbl_Rsdt->TableOffsetEntry[i]; |
| } |
| |
| Table = AcpiOsMapMemory (TableAddress, sizeof (*Table)); |
| if (!Table) |
| { |
| return (AE_BAD_ADDRESS); |
| } |
| |
| Instance = 0; |
| NewInfo = Gbl_TableListHead; |
| while (NewInfo->Next != NULL) |
| { |
| NewInfo = NewInfo->Next; |
| if (ACPI_COMPARE_NAME (Table->Signature, NewInfo->Signature)) |
| { |
| Instance++; |
| } |
| } |
| |
| NewInfo = calloc (1, sizeof (*NewInfo)); |
| if (!NewInfo) |
| { |
| AcpiOsUnmapMemory (Table, sizeof (*Table)); |
| return (AE_NO_MEMORY); |
| } |
| |
| ACPI_MOVE_NAME (NewInfo->Signature, Table->Signature); |
| |
| AcpiOsUnmapMemory (Table, sizeof (*Table)); |
| |
| NewInfo->Instance = Instance; |
| NewInfo->Address = TableAddress; |
| Info->Next = NewInfo; |
| Info = NewInfo; |
| Gbl_TableListHead->Instance++; |
| } |
| |
| Gbl_TableListInitialized = TRUE; |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: OslMapTable |
| * |
| * PARAMETERS: Address - Address of the table in memory |
| * Signature - Optional ACPI Signature for desired table. |
| * Null terminated 4-character string. |
| * Table - Where a pointer to the mapped table is |
| * returned |
| * |
| * RETURN: Status; Mapped table is returned if AE_OK. |
| * |
| * DESCRIPTION: Map entire ACPI table into caller's address space. Also |
| * validates the table and checksum. |
| * |
| *****************************************************************************/ |
| |
| static ACPI_STATUS |
| OslMapTable ( |
| ACPI_SIZE Address, |
| char *Signature, |
| ACPI_TABLE_HEADER **Table) |
| { |
| ACPI_TABLE_HEADER *MappedTable; |
| UINT32 Length; |
| |
| |
| /* Map the header so we can get the table length */ |
| |
| MappedTable = AcpiOsMapMemory (Address, sizeof (*MappedTable)); |
| if (!MappedTable) |
| { |
| return (AE_BAD_ADDRESS); |
| } |
| |
| /* Check if table is valid */ |
| |
| if (!ApIsValidHeader (MappedTable)) |
| { |
| AcpiOsUnmapMemory (MappedTable, sizeof (*MappedTable)); |
| return (AE_BAD_HEADER); |
| } |
| |
| /* If specified, signature must match */ |
| |
| if (Signature && |
| !ACPI_COMPARE_NAME (Signature, MappedTable->Signature)) |
| { |
| AcpiOsUnmapMemory (MappedTable, sizeof (*MappedTable)); |
| return (AE_NOT_EXIST); |
| } |
| |
| /* Map the entire table */ |
| |
| Length = MappedTable->Length; |
| AcpiOsUnmapMemory (MappedTable, sizeof (*MappedTable)); |
| |
| MappedTable = AcpiOsMapMemory (Address, Length); |
| if (!MappedTable) |
| { |
| return (AE_BAD_ADDRESS); |
| } |
| |
| (void) ApIsValidChecksum (MappedTable); |
| |
| *Table = MappedTable; |
| |
| return (AE_OK); |
| } |
