2005-04-16 22:20:36 +00:00
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/******************************************************************************
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*
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* Module Name: tbxface - Public interfaces to the ACPI subsystem
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* ACPI table oriented interfaces
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*
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*****************************************************************************/
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/*
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2011-01-17 03:05:40 +00:00
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* Copyright (C) 2000 - 2011, Intel Corp.
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2005-04-16 22:20:36 +00:00
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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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2009-01-09 05:30:03 +00:00
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#include "accommon.h"
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#include "acnamesp.h"
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#include "actables.h"
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2005-04-16 22:20:36 +00:00
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#define _COMPONENT ACPI_TABLES
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2005-08-05 04:44:28 +00:00
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ACPI_MODULE_NAME("tbxface")
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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/* Local prototypes */
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static acpi_status acpi_tb_load_namespace(void);
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2007-07-26 04:50:06 +00:00
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static int no_auto_ssdt;
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2007-02-02 16:48:20 +00:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_allocate_root_table
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*
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* PARAMETERS: initial_table_count - Size of initial_table_array, in number of
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* struct acpi_table_desc structures
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*
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* RETURN: Status
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*
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* DESCRIPTION: Allocate a root table array. Used by i_aSL compiler and
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* acpi_initialize_tables.
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*
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******************************************************************************/
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acpi_status acpi_allocate_root_table(u32 initial_table_count)
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{
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2010-04-27 03:16:14 +00:00
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acpi_gbl_root_table_list.max_table_count = initial_table_count;
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2007-02-02 16:48:20 +00:00
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acpi_gbl_root_table_list.flags = ACPI_ROOT_ALLOW_RESIZE;
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return (acpi_tb_resize_root_table_list());
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}
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2005-04-16 22:20:36 +00:00
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/*******************************************************************************
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*
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2007-02-02 16:48:18 +00:00
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* FUNCTION: acpi_initialize_tables
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2005-04-16 22:20:36 +00:00
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*
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2007-02-02 16:48:18 +00:00
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* PARAMETERS: initial_table_array - Pointer to an array of pre-allocated
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* struct acpi_table_desc structures. If NULL, the
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* array is dynamically allocated.
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* initial_table_count - Size of initial_table_array, in number of
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* struct acpi_table_desc structures
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* allow_realloc - Flag to tell Table Manager if resize of
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* pre-allocated array is allowed. Ignored
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* if initial_table_array is NULL.
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2005-04-16 22:20:36 +00:00
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*
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* RETURN: Status
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*
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2007-02-02 16:48:18 +00:00
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* DESCRIPTION: Initialize the table manager, get the RSDP and RSDT/XSDT.
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*
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* NOTE: Allows static allocation of the initial table array in order
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* to avoid the use of dynamic memory in confined environments
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* such as the kernel boot sequence where it may not be available.
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*
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* If the host OS memory managers are initialized, use NULL for
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* initial_table_array, and the table will be dynamically allocated.
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2005-04-16 22:20:36 +00:00
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*
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******************************************************************************/
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2007-02-02 16:48:18 +00:00
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2007-02-02 16:48:19 +00:00
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acpi_status __init
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2007-02-02 16:48:20 +00:00
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acpi_initialize_tables(struct acpi_table_desc * initial_table_array,
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2007-02-02 16:48:18 +00:00
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u32 initial_table_count, u8 allow_resize)
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2005-04-16 22:20:36 +00:00
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{
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2007-02-02 16:48:19 +00:00
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acpi_physical_address rsdp_address;
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2005-08-05 04:44:28 +00:00
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acpi_status status;
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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ACPI_FUNCTION_TRACE(acpi_initialize_tables);
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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/*
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* Set up the Root Table Array
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* Allocate the table array if requested
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*/
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if (!initial_table_array) {
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2007-02-02 16:48:20 +00:00
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status = acpi_allocate_root_table(initial_table_count);
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2007-02-02 16:48:18 +00:00
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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} else {
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/* Root Table Array has been statically allocated by the host */
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2007-02-02 16:48:19 +00:00
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ACPI_MEMSET(initial_table_array, 0,
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2008-06-10 05:42:13 +00:00
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(acpi_size) initial_table_count *
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2007-02-02 16:48:19 +00:00
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sizeof(struct acpi_table_desc));
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2007-02-02 16:48:19 +00:00
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2007-02-02 16:48:18 +00:00
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acpi_gbl_root_table_list.tables = initial_table_array;
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2010-04-27 03:16:14 +00:00
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acpi_gbl_root_table_list.max_table_count = initial_table_count;
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2007-02-02 16:48:19 +00:00
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acpi_gbl_root_table_list.flags = ACPI_ROOT_ORIGIN_UNKNOWN;
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2007-02-02 16:48:18 +00:00
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if (allow_resize) {
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2007-02-02 16:48:19 +00:00
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acpi_gbl_root_table_list.flags |=
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ACPI_ROOT_ALLOW_RESIZE;
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2007-02-02 16:48:18 +00:00
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}
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2005-04-16 22:20:36 +00:00
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}
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2007-02-02 16:48:19 +00:00
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/* Get the address of the RSDP */
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:19 +00:00
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rsdp_address = acpi_os_get_root_pointer();
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if (!rsdp_address) {
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2007-02-02 16:48:18 +00:00
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return_ACPI_STATUS(AE_NOT_FOUND);
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}
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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/*
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* Get the root table (RSDT or XSDT) and extract all entries to the local
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* Root Table Array. This array contains the information of the RSDT/XSDT
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* in a common, more useable format.
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*/
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2009-02-03 06:41:03 +00:00
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status = acpi_tb_parse_root_table(rsdp_address);
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2007-02-02 16:48:18 +00:00
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return_ACPI_STATUS(status);
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}
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_reallocate_root_table
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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: Reallocate Root Table List into dynamic memory. Copies the
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* root list from the previously provided scratch area. Should
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* be called once dynamic memory allocation is available in the
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* kernel
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*
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******************************************************************************/
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acpi_status acpi_reallocate_root_table(void)
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{
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struct acpi_table_desc *tables;
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acpi_size new_size;
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2010-04-01 03:06:34 +00:00
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acpi_size current_size;
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2007-02-02 16:48:18 +00:00
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ACPI_FUNCTION_TRACE(acpi_reallocate_root_table);
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/*
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* Only reallocate the root table if the host provided a static buffer
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* for the table array in the call to acpi_initialize_tables.
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*/
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2007-02-02 16:48:19 +00:00
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if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
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2007-02-02 16:48:18 +00:00
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return_ACPI_STATUS(AE_SUPPORT);
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2005-04-16 22:20:36 +00:00
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}
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2010-04-01 03:06:34 +00:00
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/*
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* Get the current size of the root table and add the default
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* increment to create the new table size.
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*/
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current_size = (acpi_size)
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2010-04-27 03:16:14 +00:00
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acpi_gbl_root_table_list.current_table_count *
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sizeof(struct acpi_table_desc);
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2010-04-01 03:06:34 +00:00
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new_size = current_size +
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(ACPI_ROOT_TABLE_SIZE_INCREMENT * sizeof(struct acpi_table_desc));
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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/* Create new array and copy the old array */
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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tables = ACPI_ALLOCATE_ZEROED(new_size);
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if (!tables) {
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return_ACPI_STATUS(AE_NO_MEMORY);
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2005-04-16 22:20:36 +00:00
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}
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2010-04-01 03:06:34 +00:00
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ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, current_size);
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2005-04-16 22:20:36 +00:00
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2010-04-01 03:06:34 +00:00
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/*
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* Update the root table descriptor. The new size will be the current
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* number of tables plus the increment, independent of the reserved
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* size of the original table list.
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*/
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2007-02-02 16:48:18 +00:00
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acpi_gbl_root_table_list.tables = tables;
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2010-04-27 03:16:14 +00:00
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acpi_gbl_root_table_list.max_table_count =
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acpi_gbl_root_table_list.current_table_count +
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ACPI_ROOT_TABLE_SIZE_INCREMENT;
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2007-02-02 16:48:18 +00:00
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acpi_gbl_root_table_list.flags =
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2007-02-02 16:48:19 +00:00
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ACPI_ROOT_ORIGIN_ALLOCATED | ACPI_ROOT_ALLOW_RESIZE;
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2006-10-03 04:00:00 +00:00
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2007-02-02 16:48:18 +00:00
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return_ACPI_STATUS(AE_OK);
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}
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2007-05-10 03:34:35 +00:00
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2005-04-16 22:20:36 +00:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_load_table
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*
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* PARAMETERS: table_ptr - pointer to a buffer containing the entire
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* table to be loaded
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to load a table from the caller's
|
2006-07-08 00:44:38 +00:00
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* buffer. The buffer must contain an entire ACPI Table including
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* a valid header. The header fields will be verified, and if it
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2005-04-16 22:20:36 +00:00
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* is determined that the table is invalid, the call will fail.
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*
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******************************************************************************/
|
2005-08-05 04:44:28 +00:00
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acpi_status acpi_load_table(struct acpi_table_header *table_ptr)
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2005-04-16 22:20:36 +00:00
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{
|
2005-08-05 04:44:28 +00:00
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acpi_status status;
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2008-06-10 05:42:13 +00:00
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u32 table_index;
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2007-02-02 16:48:22 +00:00
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struct acpi_table_desc table_desc;
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if (!table_ptr)
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return AE_BAD_PARAMETER;
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ACPI_MEMSET(&table_desc, 0, sizeof(struct acpi_table_desc));
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table_desc.pointer = table_ptr;
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table_desc.length = table_ptr->length;
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table_desc.flags = ACPI_TABLE_ORIGIN_UNKNOWN;
|
2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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/*
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* Install the new table into the local data structures
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*/
|
2007-02-02 16:48:22 +00:00
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status = acpi_tb_add_table(&table_desc, &table_index);
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2005-08-05 04:44:28 +00:00
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if (ACPI_FAILURE(status)) {
|
2007-02-02 16:48:22 +00:00
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return status;
|
2005-07-29 22:15:00 +00:00
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}
|
2007-02-02 16:48:18 +00:00
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status = acpi_ns_load_table(table_index, acpi_gbl_root_node);
|
2007-02-02 16:48:22 +00:00
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return status;
|
2007-02-02 16:48:18 +00:00
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}
|
2005-07-29 22:15:00 +00:00
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2007-02-02 16:48:18 +00:00
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|
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ACPI_EXPORT_SYMBOL(acpi_load_table)
|
2006-10-02 04:00:00 +00:00
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|
2009-02-18 07:03:30 +00:00
|
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|
/*******************************************************************************
|
2007-02-02 16:48:18 +00:00
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*
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* FUNCTION: acpi_get_table_header
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*
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* PARAMETERS: Signature - ACPI signature of needed table
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* Instance - Which instance (for SSDTs)
|
2007-02-02 16:48:22 +00:00
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* out_table_header - The pointer to the table header to fill
|
2007-02-02 16:48:18 +00:00
|
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*
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* RETURN: Status and pointer to mapped table header
|
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*
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|
|
* DESCRIPTION: Finds an ACPI table header.
|
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*
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* NOTE: Caller is responsible in unmapping the header with
|
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* acpi_os_unmap_memory
|
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*
|
2009-02-18 07:03:30 +00:00
|
|
|
******************************************************************************/
|
2007-02-02 16:48:18 +00:00
|
|
|
acpi_status
|
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|
|
acpi_get_table_header(char *signature,
|
2008-06-10 05:42:13 +00:00
|
|
|
u32 instance, struct acpi_table_header *out_table_header)
|
2007-02-02 16:48:18 +00:00
|
|
|
{
|
2008-06-10 05:42:13 +00:00
|
|
|
u32 i;
|
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|
|
u32 j;
|
2007-02-02 16:48:22 +00:00
|
|
|
struct acpi_table_header *header;
|
2005-07-29 22:15:00 +00:00
|
|
|
|
2007-02-02 16:48:19 +00:00
|
|
|
/* Parameter validation */
|
|
|
|
|
|
|
|
if (!signature || !out_table_header) {
|
|
|
|
return (AE_BAD_PARAMETER);
|
|
|
|
}
|
|
|
|
|
2009-02-18 07:03:30 +00:00
|
|
|
/* Walk the root table list */
|
|
|
|
|
2010-04-27 03:16:14 +00:00
|
|
|
for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
|
|
|
|
i++) {
|
2007-02-02 16:48:18 +00:00
|
|
|
if (!ACPI_COMPARE_NAME
|
|
|
|
(&(acpi_gbl_root_table_list.tables[i].signature),
|
|
|
|
signature)) {
|
|
|
|
continue;
|
2005-07-29 22:15:00 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
if (++j < instance) {
|
|
|
|
continue;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:22 +00:00
|
|
|
if (!acpi_gbl_root_table_list.tables[i].pointer) {
|
2009-02-18 07:03:30 +00:00
|
|
|
if ((acpi_gbl_root_table_list.tables[i].flags &
|
|
|
|
ACPI_TABLE_ORIGIN_MASK) ==
|
2007-02-02 16:48:22 +00:00
|
|
|
ACPI_TABLE_ORIGIN_MAPPED) {
|
|
|
|
header =
|
|
|
|
acpi_os_map_memory(acpi_gbl_root_table_list.
|
|
|
|
tables[i].address,
|
|
|
|
sizeof(struct
|
|
|
|
acpi_table_header));
|
|
|
|
if (!header) {
|
|
|
|
return AE_NO_MEMORY;
|
|
|
|
}
|
|
|
|
ACPI_MEMCPY(out_table_header, header,
|
|
|
|
sizeof(struct acpi_table_header));
|
|
|
|
acpi_os_unmap_memory(header,
|
|
|
|
sizeof(struct
|
|
|
|
acpi_table_header));
|
|
|
|
} else {
|
|
|
|
return AE_NOT_FOUND;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
ACPI_MEMCPY(out_table_header,
|
|
|
|
acpi_gbl_root_table_list.tables[i].pointer,
|
|
|
|
sizeof(struct acpi_table_header));
|
2007-02-02 16:48:18 +00:00
|
|
|
}
|
|
|
|
return (AE_OK);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
return (AE_NOT_FOUND);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_table_header)
|
2006-10-03 04:00:00 +00:00
|
|
|
|
2009-02-18 07:03:30 +00:00
|
|
|
/*******************************************************************************
|
2006-12-19 20:56:19 +00:00
|
|
|
*
|
|
|
|
* FUNCTION: acpi_unload_table_id
|
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* PARAMETERS: id - Owner ID of the table to be removed.
|
2006-12-19 20:56:19 +00:00
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: This routine is used to force the unload of a table (by id)
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2007-02-02 16:48:18 +00:00
|
|
|
acpi_status acpi_unload_table_id(acpi_owner_id id)
|
2006-12-19 20:56:19 +00:00
|
|
|
{
|
2007-02-02 16:48:18 +00:00
|
|
|
int i;
|
|
|
|
acpi_status status = AE_NOT_EXIST;
|
2006-12-19 20:56:19 +00:00
|
|
|
|
2007-02-15 20:08:30 +00:00
|
|
|
ACPI_FUNCTION_TRACE(acpi_unload_table_id);
|
2006-12-19 20:56:19 +00:00
|
|
|
|
2007-02-15 20:08:30 +00:00
|
|
|
/* Find table in the global table list */
|
2010-04-27 03:16:14 +00:00
|
|
|
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
|
2007-02-02 16:48:18 +00:00
|
|
|
if (id != acpi_gbl_root_table_list.tables[i].owner_id) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
/*
|
2007-05-10 03:34:35 +00:00
|
|
|
* Delete all namespace objects owned by this table. Note that these
|
|
|
|
* objects can appear anywhere in the namespace by virtue of the AML
|
|
|
|
* "Scope" operator. Thus, we need to track ownership by an ID, not
|
|
|
|
* simply a position within the hierarchy
|
|
|
|
*/
|
2007-02-02 16:48:18 +00:00
|
|
|
acpi_tb_delete_namespace_by_owner(i);
|
2007-02-15 20:08:30 +00:00
|
|
|
status = acpi_tb_release_owner_id(i);
|
2007-02-02 16:48:18 +00:00
|
|
|
acpi_tb_set_table_loaded_flag(i, FALSE);
|
2007-02-15 20:08:30 +00:00
|
|
|
break;
|
2007-02-02 16:48:18 +00:00
|
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
2006-12-19 20:56:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_unload_table_id)
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
2009-02-07 23:39:41 +00:00
|
|
|
* FUNCTION: acpi_get_table_with_size
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* PARAMETERS: Signature - ACPI signature of needed table
|
|
|
|
* Instance - Which instance (for SSDTs)
|
|
|
|
* out_table - Where the pointer to the table is returned
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* RETURN: Status and pointer to table
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* DESCRIPTION: Finds and verifies an ACPI table.
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2009-02-18 07:03:30 +00:00
|
|
|
******************************************************************************/
|
2007-02-02 16:48:18 +00:00
|
|
|
acpi_status
|
2009-02-07 23:39:41 +00:00
|
|
|
acpi_get_table_with_size(char *signature,
|
|
|
|
u32 instance, struct acpi_table_header **out_table,
|
|
|
|
acpi_size *tbl_size)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2008-06-10 05:42:13 +00:00
|
|
|
u32 i;
|
|
|
|
u32 j;
|
2007-02-02 16:48:18 +00:00
|
|
|
acpi_status status;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:19 +00:00
|
|
|
/* Parameter validation */
|
|
|
|
|
|
|
|
if (!signature || !out_table) {
|
|
|
|
return (AE_BAD_PARAMETER);
|
|
|
|
}
|
|
|
|
|
2009-02-18 07:03:30 +00:00
|
|
|
/* Walk the root table list */
|
|
|
|
|
2010-04-27 03:16:14 +00:00
|
|
|
for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
|
|
|
|
i++) {
|
2007-02-02 16:48:18 +00:00
|
|
|
if (!ACPI_COMPARE_NAME
|
|
|
|
(&(acpi_gbl_root_table_list.tables[i].signature),
|
|
|
|
signature)) {
|
|
|
|
continue;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
if (++j < instance) {
|
|
|
|
continue;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
status =
|
|
|
|
acpi_tb_verify_table(&acpi_gbl_root_table_list.tables[i]);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
*out_table = acpi_gbl_root_table_list.tables[i].pointer;
|
2009-02-07 23:39:41 +00:00
|
|
|
*tbl_size = acpi_gbl_root_table_list.tables[i].length;
|
2007-02-02 16:48:18 +00:00
|
|
|
}
|
2006-07-08 00:44:38 +00:00
|
|
|
|
2007-02-02 16:48:19 +00:00
|
|
|
if (!acpi_gbl_permanent_mmap) {
|
2007-02-14 00:11:36 +00:00
|
|
|
acpi_gbl_root_table_list.tables[i].pointer = NULL;
|
2007-02-02 16:48:19 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
return (status);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
return (AE_NOT_FOUND);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-02-07 23:39:41 +00:00
|
|
|
acpi_status
|
|
|
|
acpi_get_table(char *signature,
|
|
|
|
u32 instance, struct acpi_table_header **out_table)
|
|
|
|
{
|
|
|
|
acpi_size tbl_size;
|
|
|
|
|
|
|
|
return acpi_get_table_with_size(signature,
|
|
|
|
instance, out_table, &tbl_size);
|
|
|
|
}
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_table)
|
2006-10-03 04:00:00 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* FUNCTION: acpi_get_table_by_index
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* PARAMETERS: table_index - Table index
|
|
|
|
* Table - Where the pointer to the table is returned
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* RETURN: Status and pointer to the table
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* DESCRIPTION: Obtain a table by an index into the global table list.
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
2008-06-10 05:42:13 +00:00
|
|
|
acpi_get_table_by_index(u32 table_index, struct acpi_table_header **table)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_status status;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_FUNCTION_TRACE(acpi_get_table_by_index);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:19 +00:00
|
|
|
/* Parameter validation */
|
|
|
|
|
|
|
|
if (!table) {
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
/* Validate index */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2010-04-27 03:16:14 +00:00
|
|
|
if (table_index >= acpi_gbl_root_table_list.current_table_count) {
|
2007-02-02 16:48:18 +00:00
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
if (!acpi_gbl_root_table_list.tables[table_index].pointer) {
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
/* Table is not mapped, map it */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
status =
|
|
|
|
acpi_tb_verify_table(&acpi_gbl_root_table_list.
|
|
|
|
tables[table_index]);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
*table = acpi_gbl_root_table_list.tables[table_index].pointer;
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_table_by_index)
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* FUNCTION: acpi_tb_load_namespace
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* PARAMETERS: None
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
2007-02-02 16:48:18 +00:00
|
|
|
* DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
|
|
|
|
* the RSDT/XSDT.
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
|
|
|
******************************************************************************/
|
2007-02-02 16:48:18 +00:00
|
|
|
static acpi_status acpi_tb_load_namespace(void)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_status status;
|
2008-06-10 05:42:13 +00:00
|
|
|
u32 i;
|
2010-04-07 03:05:11 +00:00
|
|
|
struct acpi_table_header *new_dsdt;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_FUNCTION_TRACE(tb_load_namespace);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
/*
|
2010-04-01 02:47:56 +00:00
|
|
|
* Load the namespace. The DSDT is required, but any SSDT and
|
|
|
|
* PSDT tables are optional. Verify the DSDT.
|
2007-02-02 16:48:18 +00:00
|
|
|
*/
|
2010-04-27 03:16:14 +00:00
|
|
|
if (!acpi_gbl_root_table_list.current_table_count ||
|
2010-04-07 03:05:11 +00:00
|
|
|
!ACPI_COMPARE_NAME(&
|
|
|
|
(acpi_gbl_root_table_list.
|
|
|
|
tables[ACPI_TABLE_INDEX_DSDT].signature),
|
|
|
|
ACPI_SIG_DSDT)
|
|
|
|
||
|
|
|
|
ACPI_FAILURE(acpi_tb_verify_table
|
|
|
|
(&acpi_gbl_root_table_list.
|
|
|
|
tables[ACPI_TABLE_INDEX_DSDT]))) {
|
2007-02-02 16:48:18 +00:00
|
|
|
status = AE_NO_ACPI_TABLES;
|
|
|
|
goto unlock_and_exit;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2010-04-07 03:05:11 +00:00
|
|
|
/*
|
|
|
|
* 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 acpi_tb_verify_table.
|
|
|
|
*/
|
|
|
|
acpi_gbl_DSDT =
|
|
|
|
acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].pointer;
|
|
|
|
|
2010-04-01 03:14:12 +00:00
|
|
|
/*
|
|
|
|
* 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 (acpi_gbl_copy_dsdt_locally) {
|
2010-04-07 03:05:11 +00:00
|
|
|
new_dsdt = acpi_tb_copy_dsdt(ACPI_TABLE_INDEX_DSDT);
|
|
|
|
if (new_dsdt) {
|
|
|
|
acpi_gbl_DSDT = new_dsdt;
|
|
|
|
}
|
2010-04-01 03:14:12 +00:00
|
|
|
}
|
|
|
|
|
2010-04-01 02:47:56 +00:00
|
|
|
/*
|
|
|
|
* Save the original DSDT header for detection of table corruption
|
|
|
|
* and/or replacement of the DSDT from outside the OS.
|
|
|
|
*/
|
2010-04-07 03:05:11 +00:00
|
|
|
ACPI_MEMCPY(&acpi_gbl_original_dsdt_header, acpi_gbl_DSDT,
|
2010-04-01 02:47:56 +00:00
|
|
|
sizeof(struct acpi_table_header));
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-02-18 07:03:30 +00:00
|
|
|
/* Load and parse tables */
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node);
|
2005-08-05 04:44:28 +00:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-02-18 07:03:30 +00:00
|
|
|
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
2010-04-27 03:16:14 +00:00
|
|
|
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
|
2007-02-02 16:48:18 +00:00
|
|
|
if ((!ACPI_COMPARE_NAME
|
|
|
|
(&(acpi_gbl_root_table_list.tables[i].signature),
|
|
|
|
ACPI_SIG_SSDT)
|
|
|
|
&&
|
|
|
|
!ACPI_COMPARE_NAME(&
|
|
|
|
(acpi_gbl_root_table_list.tables[i].
|
|
|
|
signature), ACPI_SIG_PSDT))
|
|
|
|
||
|
|
|
|
ACPI_FAILURE(acpi_tb_verify_table
|
|
|
|
(&acpi_gbl_root_table_list.tables[i]))) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2007-07-26 04:50:06 +00:00
|
|
|
if (no_auto_ssdt) {
|
|
|
|
printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
/* Ignore errors while loading tables, get as many as possible */
|
|
|
|
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
|
|
(void)acpi_ns_load_table(i, acpi_gbl_root_node);
|
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
unlock_and_exit:
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
2006-10-02 04:00:00 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_load_tables
|
|
|
|
*
|
|
|
|
* PARAMETERS: None
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Load the ACPI tables from the RSDT/XSDT
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2005-04-19 02:49:35 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
acpi_status acpi_load_tables(void)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_FUNCTION_TRACE(acpi_load_tables);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-02-18 07:03:30 +00:00
|
|
|
/* Load the namespace from the tables */
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
status = acpi_tb_load_namespace();
|
2005-08-05 04:44:28 +00:00
|
|
|
if (ACPI_FAILURE(status)) {
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
|
|
"While loading namespace from ACPI tables"));
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-02-02 16:48:18 +00:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_load_tables)
|
2007-07-26 04:50:06 +00:00
|
|
|
|
|
|
|
|
2008-04-10 15:06:38 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_install_table_handler
|
|
|
|
*
|
|
|
|
* PARAMETERS: Handler - Table event handler
|
|
|
|
* Context - Value passed to the handler on each event
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Install table event handler
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
|
|
acpi_install_table_handler(acpi_tbl_handler handler, void *context)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_install_table_handler);
|
|
|
|
|
|
|
|
if (!handler) {
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
}
|
|
|
|
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Don't allow more than one handler */
|
|
|
|
|
|
|
|
if (acpi_gbl_table_handler) {
|
|
|
|
status = AE_ALREADY_EXISTS;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Install the handler */
|
|
|
|
|
|
|
|
acpi_gbl_table_handler = handler;
|
|
|
|
acpi_gbl_table_handler_context = context;
|
|
|
|
|
|
|
|
cleanup:
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_install_table_handler)
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_remove_table_handler
|
|
|
|
*
|
|
|
|
* PARAMETERS: Handler - Table event handler that was installed
|
|
|
|
* previously.
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Remove table event handler
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_remove_table_handler(acpi_tbl_handler handler)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_remove_table_handler);
|
|
|
|
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Make sure that the installed handler is the same */
|
|
|
|
|
|
|
|
if (!handler || handler != acpi_gbl_table_handler) {
|
|
|
|
status = AE_BAD_PARAMETER;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Remove the handler */
|
|
|
|
|
|
|
|
acpi_gbl_table_handler = NULL;
|
|
|
|
|
|
|
|
cleanup:
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_remove_table_handler)
|
|
|
|
|
|
|
|
|
2007-07-26 04:50:06 +00:00
|
|
|
static int __init acpi_no_auto_ssdt_setup(char *s) {
|
|
|
|
|
|
|
|
printk(KERN_NOTICE "ACPI: SSDT auto-load disabled\n");
|
|
|
|
|
|
|
|
no_auto_ssdt = 1;
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);
|