/****************************************************************************** * * Module Name: tbgetall - Get all required ACPI tables * *****************************************************************************/ /* * Copyright (C) 2000 - 2006, R. Byron Moore * 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/acpi.h> #include <acpi/actables.h> #define _COMPONENT ACPI_TABLES ACPI_MODULE_NAME("tbgetall") /* Local prototypes */ static acpi_status acpi_tb_get_primary_table(struct acpi_pointer *address, struct acpi_table_desc *table_info); static acpi_status acpi_tb_get_secondary_table(struct acpi_pointer *address, acpi_string signature, struct acpi_table_desc *table_info); /******************************************************************************* * * FUNCTION: acpi_tb_get_primary_table * * PARAMETERS: Address - Physical address of table to retrieve * *table_info - Where the table info is returned * * RETURN: Status * * DESCRIPTION: Maps the physical address of table into a logical address * ******************************************************************************/ static acpi_status acpi_tb_get_primary_table(struct acpi_pointer *address, struct acpi_table_desc *table_info) { acpi_status status; struct acpi_table_header header; ACPI_FUNCTION_TRACE("tb_get_primary_table"); /* Ignore a NULL address in the RSDT */ if (!address->pointer.value) { return_ACPI_STATUS(AE_OK); } /* Get the header in order to get signature and table size */ status = acpi_tb_get_table_header(address, &header); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Clear the table_info */ ACPI_MEMSET(table_info, 0, sizeof(struct acpi_table_desc)); /* * Check the table signature and make sure it is recognized. * Also checks the header checksum */ table_info->pointer = &header; status = acpi_tb_recognize_table(table_info, ACPI_TABLE_PRIMARY); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Get the entire table */ status = acpi_tb_get_table_body(address, &header, table_info); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Install the table */ status = acpi_tb_install_table(table_info); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_get_secondary_table * * PARAMETERS: Address - Physical address of table to retrieve * *table_info - Where the table info is returned * * RETURN: Status * * DESCRIPTION: Maps the physical address of table into a logical address * ******************************************************************************/ static acpi_status acpi_tb_get_secondary_table(struct acpi_pointer *address, acpi_string signature, struct acpi_table_desc *table_info) { acpi_status status; struct acpi_table_header header; ACPI_FUNCTION_TRACE_STR("tb_get_secondary_table", signature); /* Get the header in order to match the signature */ status = acpi_tb_get_table_header(address, &header); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Signature must match request */ if (ACPI_STRNCMP(header.signature, signature, ACPI_NAME_SIZE)) { ACPI_ERROR((AE_INFO, "Incorrect table signature - wanted [%s] found [%4.4s]", signature, header.signature)); return_ACPI_STATUS(AE_BAD_SIGNATURE); } /* * Check the table signature and make sure it is recognized. * Also checks the header checksum */ table_info->pointer = &header; status = acpi_tb_recognize_table(table_info, ACPI_TABLE_SECONDARY); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Get the entire table */ status = acpi_tb_get_table_body(address, &header, table_info); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Install the table */ status = acpi_tb_install_table(table_info); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_get_required_tables * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Load and validate tables other than the RSDT. The RSDT must * already be loaded and validated. * * Get the minimum set of ACPI tables, namely: * * 1) FADT (via RSDT in loop below) * 2) FACS (via FADT) * 3) DSDT (via FADT) * ******************************************************************************/ acpi_status acpi_tb_get_required_tables(void) { acpi_status status = AE_OK; u32 i; struct acpi_table_desc table_info; struct acpi_pointer address; ACPI_FUNCTION_TRACE("tb_get_required_tables"); ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%d ACPI tables in RSDT\n", acpi_gbl_rsdt_table_count)); address.pointer_type = acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING; /* * Loop through all table pointers found in RSDT. * This will NOT include the FACS and DSDT - we must get * them after the loop. * * The only tables we are interested in getting here is the FADT and * any SSDTs. */ for (i = 0; i < acpi_gbl_rsdt_table_count; i++) { /* Get the table address from the common internal XSDT */ address.pointer.value = acpi_gbl_XSDT->table_offset_entry[i]; /* * Get the tables needed by this subsystem (FADT and any SSDTs). * NOTE: All other tables are completely ignored at this time. */ status = acpi_tb_get_primary_table(&address, &table_info); if ((status != AE_OK) && (status != AE_TABLE_NOT_SUPPORTED)) { ACPI_WARNING((AE_INFO, "%s, while getting table at %8.8X%8.8X", acpi_format_exception(status), ACPI_FORMAT_UINT64(address.pointer. value))); } } /* We must have a FADT to continue */ if (!acpi_gbl_FADT) { ACPI_ERROR((AE_INFO, "No FADT present in RSDT/XSDT")); return_ACPI_STATUS(AE_NO_ACPI_TABLES); } /* * Convert the FADT to a common format. This allows earlier revisions of * the table to coexist with newer versions, using common access code. */ status = acpi_tb_convert_table_fadt(); if (ACPI_FAILURE(status)) { ACPI_ERROR((AE_INFO, "Could not convert FADT to internal common format")); return_ACPI_STATUS(status); } /* Get the FACS (Pointed to by the FADT) */ address.pointer.value = acpi_gbl_FADT->xfirmware_ctrl; status = acpi_tb_get_secondary_table(&address, FACS_SIG, &table_info); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Could not get/install the FACS")); return_ACPI_STATUS(status); } /* * Create the common FACS pointer table * (Contains pointers to the original table) */ status = acpi_tb_build_common_facs(&table_info); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Get/install the DSDT (Pointed to by the FADT) */ address.pointer.value = acpi_gbl_FADT->Xdsdt; status = acpi_tb_get_secondary_table(&address, DSDT_SIG, &table_info); if (ACPI_FAILURE(status)) { ACPI_ERROR((AE_INFO, "Could not get/install the DSDT")); return_ACPI_STATUS(status); } /* Set Integer Width (32/64) based upon DSDT revision */ acpi_ut_set_integer_width(acpi_gbl_DSDT->revision); /* Dump the entire DSDT */ ACPI_DEBUG_PRINT((ACPI_DB_TABLES, "Hex dump of entire DSDT, size %d (0x%X), Integer width = %d\n", acpi_gbl_DSDT->length, acpi_gbl_DSDT->length, acpi_gbl_integer_bit_width)); ACPI_DUMP_BUFFER(ACPI_CAST_PTR(u8, acpi_gbl_DSDT), acpi_gbl_DSDT->length); /* Always delete the RSDP mapping, we are done with it */ acpi_tb_delete_tables_by_type(ACPI_TABLE_RSDP); return_ACPI_STATUS(status); }