8a335a2331
Added a reader/writer locking mechanism to allow multiple concurrent namespace walks (readers), but a dynamic table unload will have exclusive access to the namespace. This fixes a problem where a table unload could delete the portion of the namespace that is currently being examined by a walk. Adds a new file, utlock.c that implements the reader/writer lock mechanism. ACPICA BZ 749. http://www.acpica.org/bugzilla/show_bug.cgi?id=749 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
/******************************************************************************
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*
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* Name: actables.h - ACPI table management
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2008, Intel Corp.
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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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#ifndef __ACTABLES_H__
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#define __ACTABLES_H__
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acpi_status acpi_allocate_root_table(u32 initial_table_count);
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/*
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* tbfadt - FADT parse/convert/validate
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*/
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void acpi_tb_parse_fadt(u32 table_index);
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void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length);
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/*
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* tbfind - find ACPI table
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*/
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acpi_status
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acpi_tb_find_table(char *signature,
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char *oem_id, char *oem_table_id, u32 *table_index);
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/*
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* tbinstal - Table removal and deletion
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*/
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acpi_status acpi_tb_resize_root_table_list(void);
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acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc);
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acpi_status
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acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index);
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acpi_status
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acpi_tb_store_table(acpi_physical_address address,
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struct acpi_table_header *table,
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u32 length, u8 flags, u32 *table_index);
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void acpi_tb_delete_table(struct acpi_table_desc *table_desc);
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void acpi_tb_terminate(void);
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acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index);
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acpi_status acpi_tb_allocate_owner_id(u32 table_index);
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acpi_status acpi_tb_release_owner_id(u32 table_index);
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acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id *owner_id);
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u8 acpi_tb_is_table_loaded(u32 table_index);
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void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded);
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/*
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* tbutils - table manager utilities
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*/
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acpi_status acpi_tb_initialize_facs(void);
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u8 acpi_tb_tables_loaded(void);
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void
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acpi_tb_print_table_header(acpi_physical_address address,
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struct acpi_table_header *header);
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u8 acpi_tb_checksum(u8 *buffer, u32 length);
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acpi_status
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acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length);
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void
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acpi_tb_install_table(acpi_physical_address address,
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char *signature, u32 table_index);
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acpi_status acpi_tb_parse_root_table(acpi_physical_address rsdp_address);
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#endif /* __ACTABLES_H__ */
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