ACPI_STATUS AcpiGetTableByIndex ( UINT32 TableIndex, ACPI_TABLE_HEADER **Table) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiGetTableByIndex); /* Parameter validation */ if (!Table) { return_ACPI_STATUS (AE_BAD_PARAMETER); } (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* Validate index */ if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount) { (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (AE_BAD_PARAMETER); } if (!AcpiGbl_RootTableList.Tables[TableIndex].Pointer) { /* Table is not mapped, map it */ Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[TableIndex]); if (ACPI_FAILURE (Status)) { (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); } } *Table = AcpiGbl_RootTableList.Tables[TableIndex].Pointer; (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (AE_OK); }
ACPI_STATUS AcpiGetTable ( char *Signature, UINT32 Instance, ACPI_TABLE_HEADER **OutTable) { UINT32 i; UINT32 j; ACPI_STATUS Status; /* Parameter validation */ if (!Signature || !OutTable) { return (AE_BAD_PARAMETER); } /* Walk the root table list */ for (i = 0, j = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) { if (!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), Signature)) { continue; } if (++j < Instance) { continue; } Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); if (ACPI_SUCCESS (Status)) { *OutTable = AcpiGbl_RootTableList.Tables[i].Pointer; } return (Status); } return (AE_NOT_FOUND); }
void AcpiDbDisplayTableInfo ( char *TableArg) { UINT32 i; ACPI_TABLE_DESC *TableDesc; ACPI_STATUS Status; /* Walk the entire root table list */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) { TableDesc = &AcpiGbl_RootTableList.Tables[i]; AcpiOsPrintf ("%u ", i); /* Make sure that the table is mapped */ Status = AcpiTbVerifyTable (TableDesc); if (ACPI_FAILURE (Status)) { return; } /* Dump the table header */ if (TableDesc->Pointer) { AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer); } else { /* If the pointer is null, the table has been unloaded */ ACPI_INFO ((AE_INFO, "%4.4s - Table has been unloaded", TableDesc->Signature.Ascii)); } } }
static ACPI_STATUS AcpiTbLoadNamespace ( void) { ACPI_STATUS Status; UINT32 i; ACPI_TABLE_HEADER *NewDsdt; ACPI_FUNCTION_TRACE (TbLoadNamespace); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* * Load the namespace. The DSDT is required, but any SSDT and * PSDT tables are optional. Verify the DSDT. */ if (!AcpiGbl_RootTableList.CurrentTableCount || !ACPI_COMPARE_NAME ( &(AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Signature), ACPI_SIG_DSDT) || ACPI_FAILURE (AcpiTbVerifyTable ( &AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT]))) { Status = AE_NO_ACPI_TABLES; goto UnlockAndExit; } /* * Save the DSDT pointer for simple access. This is the mapped memory * address. We must take care here because the address of the .Tables * array can change dynamically as tables are loaded at run-time. Note: * .Pointer field is not validated until after call to AcpiTbVerifyTable. */ AcpiGbl_DSDT = AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Pointer; /* * Optionally copy the entire DSDT to local memory (instead of simply * mapping it.) There are some BIOSs that corrupt or replace the original * DSDT, creating the need for this option. Default is FALSE, do not copy * the DSDT. */ if (AcpiGbl_CopyDsdtLocally) { NewDsdt = AcpiTbCopyDsdt (ACPI_TABLE_INDEX_DSDT); if (NewDsdt) { AcpiGbl_DSDT = NewDsdt; } } /* * Save the original DSDT header for detection of table corruption * and/or replacement of the DSDT from outside the OS. */ ACPI_MEMCPY (&AcpiGbl_OriginalDsdtHeader, AcpiGbl_DSDT, sizeof (ACPI_TABLE_HEADER)); (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); /* Load and parse tables */ Status = AcpiNsLoadTable (ACPI_TABLE_INDEX_DSDT, AcpiGbl_RootNode); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */ (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); for (i = 2; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { if ((!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), ACPI_SIG_SSDT) && !ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), ACPI_SIG_PSDT)) || ACPI_FAILURE (AcpiTbVerifyTable ( &AcpiGbl_RootTableList.Tables[i]))) { continue; } /* Skip SSDT when it is overriden with DSDT */ if (ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), ACPI_SIG_SSDT) && (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_ORIGIN_OVERRIDE)) { continue; } /* Ignore errors while loading tables, get as many as possible */ (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); (void) AcpiNsLoadTable (i, AcpiGbl_RootNode); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); } ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n")); UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiTbAddTable ( ACPI_TABLE_DESC *TableDesc, UINT32 *TableIndex) { UINT32 i; ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (TbAddTable); if (!TableDesc->Pointer) { Status = AcpiTbVerifyTable (TableDesc); if (ACPI_FAILURE (Status) || !TableDesc->Pointer) { return_ACPI_STATUS (Status); } } /* * Validate the incoming table signature. * * 1) Originally, we checked the table signature for "SSDT" or "PSDT". * 2) We added support for OEMx tables, signature "OEM". * 3) Valid tables were encountered with a null signature, so we just * gave up on validating the signature, (05/2008). * 4) We encountered non-AML tables such as the MADT, which caused * interpreter errors and kernel faults. So now, we once again allow * only "SSDT", "OEMx", and now, also a null signature. (05/2011). */ if ((TableDesc->Pointer->Signature[0] != 0x00) && (!ACPI_COMPARE_NAME (TableDesc->Pointer->Signature, ACPI_SIG_SSDT)) && (ACPI_STRNCMP (TableDesc->Pointer->Signature, "OEM", 3))) { ACPI_BIOS_ERROR ((AE_INFO, "Table has invalid signature [%4.4s] (0x%8.8X), " "must be SSDT or OEMx", AcpiUtValidAcpiName (TableDesc->Pointer->Signature) ? TableDesc->Pointer->Signature : "????", *(UINT32 *) TableDesc->Pointer->Signature)); return_ACPI_STATUS (AE_BAD_SIGNATURE); } (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* Check if table is already registered */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { if (!AcpiGbl_RootTableList.Tables[i].Pointer) { Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); if (ACPI_FAILURE (Status) || !AcpiGbl_RootTableList.Tables[i].Pointer) { continue; } } /* * Check for a table match on the entire table length, * not just the header. */ if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length) { continue; } if (ACPI_MEMCMP (TableDesc->Pointer, AcpiGbl_RootTableList.Tables[i].Pointer, AcpiGbl_RootTableList.Tables[i].Length)) { continue; } /* * Note: the current mechanism does not unregister a table if it is * dynamically unloaded. The related namespace entries are deleted, * but the table remains in the root table list. * * The assumption here is that the number of different tables that * will be loaded is actually small, and there is minimal overhead * in just keeping the table in case it is needed again. * * If this assumption changes in the future (perhaps on large * machines with many table load/unload operations), tables will * need to be unregistered when they are unloaded, and slots in the * root table list should be reused when empty. */ /* * Table is already registered. * We can delete the table that was passed as a parameter. */ AcpiTbDeleteTable (TableDesc); *TableIndex = i; if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED) { /* Table is still loaded, this is an error */ Status = AE_ALREADY_EXISTS; goto Release; } else { /* Table was unloaded, allow it to be reloaded */ TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer; TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address; Status = AE_OK; goto PrintHeader; } } /* * ACPI Table Override: * Allow the host to override dynamically loaded tables. * NOTE: the table is fully mapped at this point, and the mapping will * be deleted by TbTableOverride if the table is actually overridden. */ (void) AcpiTbTableOverride (TableDesc->Pointer, TableDesc); /* Add the table to the global root table list */ Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer, TableDesc->Length, TableDesc->Flags, TableIndex); if (ACPI_FAILURE (Status)) { goto Release; } PrintHeader: AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer); Release: (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiTbFindTable ( char *Signature, char *OemId, char *OemTableId, UINT32 *TableIndex) { UINT32 i; ACPI_STATUS Status; ACPI_TABLE_HEADER Header; ACPI_FUNCTION_TRACE (TbFindTable); /* Normalize the input strings */ ACPI_MEMSET (&Header, 0, sizeof (ACPI_TABLE_HEADER)); ACPI_MOVE_NAME (Header.Signature, Signature); ACPI_STRNCPY (Header.OemId, OemId, ACPI_OEM_ID_SIZE); ACPI_STRNCPY (Header.OemTableId, OemTableId, ACPI_OEM_TABLE_ID_SIZE); /* Search for the table */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { if (ACPI_MEMCMP (&(AcpiGbl_RootTableList.Tables[i].Signature), Header.Signature, ACPI_NAME_SIZE)) { /* Not the requested table */ continue; } /* Table with matching signature has been found */ if (!AcpiGbl_RootTableList.Tables[i].Pointer) { /* Table is not currently mapped, map it */ Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (!AcpiGbl_RootTableList.Tables[i].Pointer) { continue; } } /* Check for table match on all IDs */ if (!ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->Signature, Header.Signature, ACPI_NAME_SIZE) && (!OemId[0] || !ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->OemId, Header.OemId, ACPI_OEM_ID_SIZE)) && (!OemTableId[0] || !ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->OemTableId, Header.OemTableId, ACPI_OEM_TABLE_ID_SIZE))) { *TableIndex = i; ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n", Header.Signature)); return_ACPI_STATUS (AE_OK); } } return_ACPI_STATUS (AE_NOT_FOUND); }
void AcpiDbDisplayTableInfo ( char *TableArg) { UINT32 i; ACPI_TABLE_DESC *TableDesc; ACPI_STATUS Status; /* Header */ AcpiOsPrintf ("Idx ID Status Type Sig Address Len Header\n"); /* Walk the entire root table list */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) { TableDesc = &AcpiGbl_RootTableList.Tables[i]; /* Index and Table ID */ AcpiOsPrintf ("%3u %.2u ", i, TableDesc->OwnerId); /* Decode the table flags */ if (!(TableDesc->Flags & ACPI_TABLE_IS_LOADED)) { AcpiOsPrintf ("NotLoaded "); } else { AcpiOsPrintf (" Loaded "); } switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) { case ACPI_TABLE_ORIGIN_UNKNOWN: AcpiOsPrintf ("Unknown "); break; case ACPI_TABLE_ORIGIN_MAPPED: AcpiOsPrintf ("Mapped "); break; case ACPI_TABLE_ORIGIN_ALLOCATED: AcpiOsPrintf ("Allocated "); break; case ACPI_TABLE_ORIGIN_OVERRIDE: AcpiOsPrintf ("Override "); break; default: AcpiOsPrintf ("INVALID "); break; } /* Make sure that the table is mapped */ Status = AcpiTbVerifyTable (TableDesc); if (ACPI_FAILURE (Status)) { return; } /* Dump the table header */ if (TableDesc->Pointer) { AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer); } else { /* If the pointer is null, the table has been unloaded */ ACPI_INFO ((AE_INFO, "%4.4s - Table has been unloaded", TableDesc->Signature.Ascii)); } } }
static ACPI_STATUS AcpiTbLoadNamespace ( void) { ACPI_STATUS Status; UINT32 i; ACPI_FUNCTION_TRACE (TbLoadNamespace); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* * Load the namespace. The DSDT is required, but any SSDT and PSDT tables * are optional. */ if (!AcpiGbl_RootTableList.Count || !ACPI_COMPARE_NAME ( &(AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Signature), ACPI_SIG_DSDT) || ACPI_FAILURE (AcpiTbVerifyTable ( &AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT]))) { Status = AE_NO_ACPI_TABLES; goto UnlockAndExit; } /* A valid DSDT is required */ Status = AcpiTbVerifyTable ( &AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT]); if (ACPI_FAILURE (Status)) { Status = AE_NO_ACPI_TABLES; goto UnlockAndExit; } (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); /* Load and parse tables */ Status = AcpiNsLoadTable (ACPI_TABLE_INDEX_DSDT, AcpiGbl_RootNode); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */ (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); for (i = 0; i < AcpiGbl_RootTableList.Count; ++i) { if ((!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), ACPI_SIG_SSDT) && !ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), ACPI_SIG_PSDT)) || ACPI_FAILURE (AcpiTbVerifyTable ( &AcpiGbl_RootTableList.Tables[i]))) { continue; } /* Ignore errors while loading tables, get as many as possible */ (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); (void) AcpiNsLoadTable (i, AcpiGbl_RootNode); (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); } ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n")); UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiTbFindTable ( char *Signature, char *OemId, char *OemTableId, ACPI_NATIVE_UINT *TableIndex) { ACPI_NATIVE_UINT i; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (TbFindTable); for (i = 0; i < AcpiGbl_RootTableList.Count; ++i) { if (ACPI_MEMCMP (&(AcpiGbl_RootTableList.Tables[i].Signature), Signature, ACPI_NAME_SIZE)) { /* Not the requested table */ continue; } /* Table with matching signature has been found */ if (!AcpiGbl_RootTableList.Tables[i].Pointer) { /* Table is not currently mapped, map it */ Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (!AcpiGbl_RootTableList.Tables[i].Pointer) { continue; } } /* Check for table match on all IDs */ if (!ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->Signature, Signature, ACPI_NAME_SIZE) && (!OemId[0] || !ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->OemId, OemId, ACPI_OEM_ID_SIZE)) && (!OemTableId[0] || !ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->OemTableId, OemTableId, ACPI_OEM_TABLE_ID_SIZE))) { *TableIndex = i; ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n", Signature)); return_ACPI_STATUS (AE_OK); } } return_ACPI_STATUS (AE_NOT_FOUND); }
ACPI_STATUS AcpiTbAddTable ( ACPI_TABLE_DESC *TableDesc, UINT32 *TableIndex) { UINT32 i; ACPI_STATUS Status = AE_OK; ACPI_TABLE_HEADER *OverrideTable = NULL; ACPI_FUNCTION_TRACE (TbAddTable); if (!TableDesc->Pointer) { Status = AcpiTbVerifyTable (TableDesc); if (ACPI_FAILURE (Status) || !TableDesc->Pointer) { return_ACPI_STATUS (Status); } } /* * Originally, we checked the table signature for "SSDT" or "PSDT" here. * Next, we added support for OEMx tables, signature "OEM". * Valid tables were encountered with a null signature, so we've just * given up on validating the signature, since it seems to be a waste * of code. The original code was removed (05/2008). */ (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); /* Check if table is already registered */ for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { if (!AcpiGbl_RootTableList.Tables[i].Pointer) { Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); if (ACPI_FAILURE (Status) || !AcpiGbl_RootTableList.Tables[i].Pointer) { continue; } } /* * Check for a table match on the entire table length, * not just the header. */ if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length) { continue; } if (ACPI_MEMCMP (TableDesc->Pointer, AcpiGbl_RootTableList.Tables[i].Pointer, AcpiGbl_RootTableList.Tables[i].Length)) { continue; } /* * Note: the current mechanism does not unregister a table if it is * dynamically unloaded. The related namespace entries are deleted, * but the table remains in the root table list. * * The assumption here is that the number of different tables that * will be loaded is actually small, and there is minimal overhead * in just keeping the table in case it is needed again. * * If this assumption changes in the future (perhaps on large * machines with many table load/unload operations), tables will * need to be unregistered when they are unloaded, and slots in the * root table list should be reused when empty. */ /* * Table is already registered. * We can delete the table that was passed as a parameter. */ AcpiTbDeleteTable (TableDesc); *TableIndex = i; if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED) { /* Table is still loaded, this is an error */ Status = AE_ALREADY_EXISTS; goto Release; } else { /* Table was unloaded, allow it to be reloaded */ TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer; TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address; Status = AE_OK; goto PrintHeader; } } /* * ACPI Table Override: * Allow the host to override dynamically loaded tables. */ Status = AcpiOsTableOverride (TableDesc->Pointer, &OverrideTable); if (ACPI_SUCCESS (Status) && OverrideTable) { ACPI_INFO ((AE_INFO, "%4.4s @ 0x%p Table override, replaced with:", TableDesc->Pointer->Signature, ACPI_CAST_PTR (void, TableDesc->Address))); /* We can delete the table that was passed as a parameter */ AcpiTbDeleteTable (TableDesc); /* Setup descriptor for the new table */ TableDesc->Address = ACPI_PTR_TO_PHYSADDR (OverrideTable); TableDesc->Pointer = OverrideTable; TableDesc->Length = OverrideTable->Length; TableDesc->Flags = ACPI_TABLE_ORIGIN_OVERRIDE; }