314 lines
9.2 KiB
C
314 lines
9.2 KiB
C
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/******************************************************************************
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*
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* Module Name: tbgetall - Get all required ACPI tables
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2005, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/actables.h>
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#define _COMPONENT ACPI_TABLES
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ACPI_MODULE_NAME ("tbgetall")
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_get_primary_table
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*
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* PARAMETERS: Address - Physical address of table to retrieve
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* *table_info - Where the table info is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Maps the physical address of table into a logical address
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_primary_table (
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struct acpi_pointer *address,
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struct acpi_table_desc *table_info)
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{
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acpi_status status;
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struct acpi_table_header header;
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ACPI_FUNCTION_TRACE ("tb_get_primary_table");
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/* Ignore a NULL address in the RSDT */
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if (!address->pointer.value) {
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return_ACPI_STATUS (AE_OK);
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}
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/*
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* Get the header in order to get signature and table size
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*/
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status = acpi_tb_get_table_header (address, &header);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/* Clear the table_info */
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ACPI_MEMSET (table_info, 0, sizeof (struct acpi_table_desc));
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/*
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* Check the table signature and make sure it is recognized.
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* Also checks the header checksum
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*/
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table_info->pointer = &header;
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status = acpi_tb_recognize_table (table_info, ACPI_TABLE_PRIMARY);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/* Get the entire table */
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status = acpi_tb_get_table_body (address, &header, table_info);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/* Install the table */
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status = acpi_tb_install_table (table_info);
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return_ACPI_STATUS (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_get_secondary_table
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*
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* PARAMETERS: Address - Physical address of table to retrieve
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* *table_info - Where the table info is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Maps the physical address of table into a logical address
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_secondary_table (
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struct acpi_pointer *address,
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acpi_string signature,
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struct acpi_table_desc *table_info)
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{
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acpi_status status;
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struct acpi_table_header header;
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ACPI_FUNCTION_TRACE_STR ("tb_get_secondary_table", signature);
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/* Get the header in order to match the signature */
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status = acpi_tb_get_table_header (address, &header);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/* Signature must match request */
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if (ACPI_STRNCMP (header.signature, signature, ACPI_NAME_SIZE)) {
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ACPI_REPORT_ERROR (("Incorrect table signature - wanted [%s] found [%4.4s]\n",
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signature, header.signature));
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return_ACPI_STATUS (AE_BAD_SIGNATURE);
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}
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/*
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* Check the table signature and make sure it is recognized.
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* Also checks the header checksum
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*/
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table_info->pointer = &header;
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status = acpi_tb_recognize_table (table_info, ACPI_TABLE_SECONDARY);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/* Get the entire table */
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status = acpi_tb_get_table_body (address, &header, table_info);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/* Install the table */
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status = acpi_tb_install_table (table_info);
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return_ACPI_STATUS (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_get_required_tables
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Load and validate tables other than the RSDT. The RSDT must
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* already be loaded and validated.
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*
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* Get the minimum set of ACPI tables, namely:
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*
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* 1) FADT (via RSDT in loop below)
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* 2) FACS (via FADT)
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* 3) DSDT (via FADT)
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_required_tables (
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void)
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{
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acpi_status status = AE_OK;
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u32 i;
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struct acpi_table_desc table_info;
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struct acpi_pointer address;
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ACPI_FUNCTION_TRACE ("tb_get_required_tables");
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%d ACPI tables in RSDT\n",
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acpi_gbl_rsdt_table_count));
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address.pointer_type = acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING;
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/*
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* Loop through all table pointers found in RSDT.
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* This will NOT include the FACS and DSDT - we must get
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* them after the loop.
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*
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* The only tables we are interested in getting here is the FADT and
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* any SSDTs.
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*/
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for (i = 0; i < acpi_gbl_rsdt_table_count; i++) {
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/* Get the table address from the common internal XSDT */
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address.pointer.value = acpi_gbl_XSDT->table_offset_entry[i];
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/*
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* Get the tables needed by this subsystem (FADT and any SSDTs).
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* NOTE: All other tables are completely ignored at this time.
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*/
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status = acpi_tb_get_primary_table (&address, &table_info);
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if ((status != AE_OK) && (status != AE_TABLE_NOT_SUPPORTED)) {
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ACPI_REPORT_WARNING (("%s, while getting table at %8.8X%8.8X\n",
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acpi_format_exception (status),
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ACPI_FORMAT_UINT64 (address.pointer.value)));
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}
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}
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/* We must have a FADT to continue */
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if (!acpi_gbl_FADT) {
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ACPI_REPORT_ERROR (("No FADT present in RSDT/XSDT\n"));
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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/*
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* Convert the FADT to a common format. This allows earlier revisions of the
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* table to coexist with newer versions, using common access code.
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*/
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status = acpi_tb_convert_table_fadt ();
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if (ACPI_FAILURE (status)) {
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ACPI_REPORT_ERROR (("Could not convert FADT to internal common format\n"));
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return_ACPI_STATUS (status);
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}
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/*
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* Get the FACS (Pointed to by the FADT)
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*/
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address.pointer.value = acpi_gbl_FADT->xfirmware_ctrl;
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status = acpi_tb_get_secondary_table (&address, FACS_SIG, &table_info);
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if (ACPI_FAILURE (status)) {
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ACPI_REPORT_ERROR (("Could not get/install the FACS, %s\n",
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acpi_format_exception (status)));
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return_ACPI_STATUS (status);
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}
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/*
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* Create the common FACS pointer table
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* (Contains pointers to the original table)
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*/
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status = acpi_tb_build_common_facs (&table_info);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/*
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* Get/install the DSDT (Pointed to by the FADT)
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*/
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address.pointer.value = acpi_gbl_FADT->Xdsdt;
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status = acpi_tb_get_secondary_table (&address, DSDT_SIG, &table_info);
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if (ACPI_FAILURE (status)) {
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ACPI_REPORT_ERROR (("Could not get/install the DSDT\n"));
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return_ACPI_STATUS (status);
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}
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/* Set Integer Width (32/64) based upon DSDT revision */
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acpi_ut_set_integer_width (acpi_gbl_DSDT->revision);
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/* Dump the entire DSDT */
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ACPI_DEBUG_PRINT ((ACPI_DB_TABLES,
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"Hex dump of entire DSDT, size %d (0x%X), Integer width = %d\n",
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acpi_gbl_DSDT->length, acpi_gbl_DSDT->length, acpi_gbl_integer_bit_width));
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ACPI_DUMP_BUFFER ((u8 *) acpi_gbl_DSDT, acpi_gbl_DSDT->length);
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/* Always delete the RSDP mapping, we are done with it */
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acpi_tb_delete_tables_by_type (ACPI_TABLE_RSDP);
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return_ACPI_STATUS (status);
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}
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