774 lines
22 KiB
C
774 lines
22 KiB
C
/******************************************************************************
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*
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* Module Name: tbdata - Table manager data structure functions
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2015, 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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#include <acpi/acpi.h>
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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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#define _COMPONENT ACPI_TABLES
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ACPI_MODULE_NAME("tbdata")
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_init_table_descriptor
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*
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* PARAMETERS: table_desc - Table descriptor
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* address - Physical address of the table
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* flags - Allocation flags of the table
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* table - Pointer to the table
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*
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* RETURN: None
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*
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* DESCRIPTION: Initialize a new table descriptor
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*
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******************************************************************************/
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void
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acpi_tb_init_table_descriptor(struct acpi_table_desc *table_desc,
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acpi_physical_address address,
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u8 flags, struct acpi_table_header *table)
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{
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/*
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* Initialize the table descriptor. Set the pointer to NULL, since the
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* table is not fully mapped at this time.
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*/
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memset(table_desc, 0, sizeof(struct acpi_table_desc));
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table_desc->address = address;
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table_desc->length = table->length;
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table_desc->flags = flags;
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ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_acquire_table
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*
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* PARAMETERS: table_desc - Table descriptor
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* table_ptr - Where table is returned
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* table_length - Where table length is returned
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* table_flags - Where table allocation flags are returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Acquire an ACPI table. It can be used for tables not
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* maintained in the acpi_gbl_root_table_list.
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*
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******************************************************************************/
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acpi_status
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acpi_tb_acquire_table(struct acpi_table_desc *table_desc,
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struct acpi_table_header **table_ptr,
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u32 *table_length, u8 *table_flags)
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{
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struct acpi_table_header *table = NULL;
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switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
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case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
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table =
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acpi_os_map_memory(table_desc->address, table_desc->length);
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break;
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case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
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case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
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table = ACPI_CAST_PTR(struct acpi_table_header,
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ACPI_PHYSADDR_TO_PTR(table_desc->
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address));
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break;
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default:
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break;
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}
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/* Table is not valid yet */
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if (!table) {
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return (AE_NO_MEMORY);
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}
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/* Fill the return values */
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*table_ptr = table;
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*table_length = table_desc->length;
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*table_flags = table_desc->flags;
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_release_table
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*
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* PARAMETERS: table - Pointer for the table
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* table_length - Length for the table
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* table_flags - Allocation flags for the table
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*
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* RETURN: None
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*
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* DESCRIPTION: Release a table. The inverse of acpi_tb_acquire_table().
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*
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******************************************************************************/
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void
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acpi_tb_release_table(struct acpi_table_header *table,
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u32 table_length, u8 table_flags)
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{
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switch (table_flags & ACPI_TABLE_ORIGIN_MASK) {
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case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
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acpi_os_unmap_memory(table, table_length);
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break;
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case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
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case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
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default:
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break;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_acquire_temp_table
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*
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* PARAMETERS: table_desc - Table descriptor to be acquired
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* address - Address of the table
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* flags - Allocation flags of the table
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function validates the table header to obtain the length
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* of a table and fills the table descriptor to make its state as
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* "INSTALLED". Such a table descriptor is only used for verified
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* installation.
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*
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******************************************************************************/
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acpi_status
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acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc,
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acpi_physical_address address, u8 flags)
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{
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struct acpi_table_header *table_header;
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switch (flags & ACPI_TABLE_ORIGIN_MASK) {
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case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
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/* Get the length of the full table from the header */
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table_header =
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acpi_os_map_memory(address,
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sizeof(struct acpi_table_header));
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if (!table_header) {
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return (AE_NO_MEMORY);
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}
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acpi_tb_init_table_descriptor(table_desc, address, flags,
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table_header);
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acpi_os_unmap_memory(table_header,
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sizeof(struct acpi_table_header));
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return (AE_OK);
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case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
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case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
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table_header = ACPI_CAST_PTR(struct acpi_table_header,
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ACPI_PHYSADDR_TO_PTR(address));
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if (!table_header) {
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return (AE_NO_MEMORY);
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}
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acpi_tb_init_table_descriptor(table_desc, address, flags,
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table_header);
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return (AE_OK);
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default:
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break;
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}
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/* Table is not valid yet */
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return (AE_NO_MEMORY);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_release_temp_table
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*
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* PARAMETERS: table_desc - Table descriptor to be released
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*
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* RETURN: Status
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*
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* DESCRIPTION: The inverse of acpi_tb_acquire_temp_table().
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*
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*****************************************************************************/
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void acpi_tb_release_temp_table(struct acpi_table_desc *table_desc)
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{
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/*
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* Note that the .Address is maintained by the callers of
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* acpi_tb_acquire_temp_table(), thus do not invoke acpi_tb_uninstall_table()
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* where .Address will be freed.
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*/
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acpi_tb_invalidate_table(table_desc);
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_tb_validate_table
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*
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* PARAMETERS: table_desc - Table descriptor
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to validate the table, the returned
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* table descriptor is in "VALIDATED" state.
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*
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*****************************************************************************/
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acpi_status acpi_tb_validate_table(struct acpi_table_desc *table_desc)
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{
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE(tb_validate_table);
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/* Validate the table if necessary */
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if (!table_desc->pointer) {
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status = acpi_tb_acquire_table(table_desc, &table_desc->pointer,
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&table_desc->length,
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&table_desc->flags);
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if (!table_desc->pointer) {
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status = AE_NO_MEMORY;
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}
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}
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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_invalidate_table
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*
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* PARAMETERS: table_desc - Table descriptor
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*
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* RETURN: None
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*
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* DESCRIPTION: Invalidate one internal ACPI table, this is the inverse of
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* acpi_tb_validate_table().
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*
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******************************************************************************/
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void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc)
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{
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ACPI_FUNCTION_TRACE(tb_invalidate_table);
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/* Table must be validated */
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if (!table_desc->pointer) {
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return_VOID;
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}
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acpi_tb_release_table(table_desc->pointer, table_desc->length,
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table_desc->flags);
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table_desc->pointer = NULL;
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return_VOID;
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_tb_validate_temp_table
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*
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* PARAMETERS: table_desc - Table descriptor
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to validate the table, the returned
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* table descriptor is in "VALIDATED" state.
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*
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*****************************************************************************/
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acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc)
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{
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if (!table_desc->pointer && !acpi_gbl_verify_table_checksum) {
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/*
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* Only validates the header of the table.
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* Note that Length contains the size of the mapping after invoking
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* this work around, this value is required by
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* acpi_tb_release_temp_table().
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* We can do this because in acpi_init_table_descriptor(), the Length
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* field of the installed descriptor is filled with the actual
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* table length obtaining from the table header.
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*/
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table_desc->length = sizeof(struct acpi_table_header);
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}
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return (acpi_tb_validate_table(table_desc));
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_tb_verify_temp_table
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*
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* PARAMETERS: table_desc - Table descriptor
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* signature - Table signature to verify
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to validate and verify the table, the
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* returned table descriptor is in "VALIDATED" state.
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*
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*****************************************************************************/
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acpi_status
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acpi_tb_verify_temp_table(struct acpi_table_desc * table_desc, char *signature)
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{
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE(tb_verify_temp_table);
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/* Validate the table */
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status = acpi_tb_validate_temp_table(table_desc);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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/* If a particular signature is expected (DSDT/FACS), it must match */
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if (signature && !ACPI_COMPARE_NAME(&table_desc->signature, signature)) {
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ACPI_BIOS_ERROR((AE_INFO,
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"Invalid signature 0x%X for ACPI table, expected [%s]",
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table_desc->signature.integer, signature));
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status = AE_BAD_SIGNATURE;
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goto invalidate_and_exit;
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}
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/* Verify the checksum */
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if (acpi_gbl_verify_table_checksum) {
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status =
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acpi_tb_verify_checksum(table_desc->pointer,
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table_desc->length);
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
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"%4.4s 0x%8.8X%8.8X"
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" Attempted table install failed",
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acpi_ut_valid_acpi_name(table_desc->
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signature.
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ascii) ?
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table_desc->signature.ascii : "????",
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ACPI_FORMAT_UINT64(table_desc->
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address)));
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goto invalidate_and_exit;
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}
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}
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return_ACPI_STATUS(AE_OK);
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invalidate_and_exit:
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acpi_tb_invalidate_table(table_desc);
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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_resize_root_table_list
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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: Expand the size of global table array
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*
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******************************************************************************/
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acpi_status acpi_tb_resize_root_table_list(void)
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{
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struct acpi_table_desc *tables;
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u32 table_count;
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ACPI_FUNCTION_TRACE(tb_resize_root_table_list);
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/* allow_resize flag is a parameter to acpi_initialize_tables */
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if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) {
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ACPI_ERROR((AE_INFO,
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"Resize of Root Table Array is not allowed"));
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return_ACPI_STATUS(AE_SUPPORT);
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}
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/* Increase the Table Array size */
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if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
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table_count = acpi_gbl_root_table_list.max_table_count;
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} else {
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table_count = acpi_gbl_root_table_list.current_table_count;
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}
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tables = ACPI_ALLOCATE_ZEROED(((acpi_size) table_count +
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ACPI_ROOT_TABLE_SIZE_INCREMENT) *
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sizeof(struct acpi_table_desc));
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if (!tables) {
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ACPI_ERROR((AE_INFO,
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"Could not allocate new root table array"));
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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/* Copy and free the previous table array */
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if (acpi_gbl_root_table_list.tables) {
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memcpy(tables, acpi_gbl_root_table_list.tables,
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(acpi_size) table_count *
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sizeof(struct acpi_table_desc));
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if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
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ACPI_FREE(acpi_gbl_root_table_list.tables);
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}
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}
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acpi_gbl_root_table_list.tables = tables;
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acpi_gbl_root_table_list.max_table_count =
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table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT;
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acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED;
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return_ACPI_STATUS(AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_get_next_table_descriptor
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*
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* PARAMETERS: table_index - Where table index is returned
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* table_desc - Where table descriptor is returned
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*
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* RETURN: Status and table index/descriptor.
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*
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* DESCRIPTION: Allocate a new ACPI table entry to the global table list
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_next_table_descriptor(u32 *table_index,
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struct acpi_table_desc **table_desc)
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{
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acpi_status status;
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u32 i;
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/* Ensure that there is room for the table in the Root Table List */
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if (acpi_gbl_root_table_list.current_table_count >=
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acpi_gbl_root_table_list.max_table_count) {
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status = acpi_tb_resize_root_table_list();
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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}
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i = acpi_gbl_root_table_list.current_table_count;
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acpi_gbl_root_table_list.current_table_count++;
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if (table_index) {
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*table_index = i;
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}
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if (table_desc) {
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*table_desc = &acpi_gbl_root_table_list.tables[i];
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_terminate
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Delete all internal ACPI tables
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*
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******************************************************************************/
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void acpi_tb_terminate(void)
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{
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u32 i;
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ACPI_FUNCTION_TRACE(tb_terminate);
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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/* Delete the individual tables */
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for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
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acpi_tb_uninstall_table(&acpi_gbl_root_table_list.tables[i]);
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}
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/*
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* Delete the root table array if allocated locally. Array cannot be
|
|
* mapped, so we don't need to check for that flag.
|
|
*/
|
|
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
|
|
ACPI_FREE(acpi_gbl_root_table_list.tables);
|
|
}
|
|
|
|
acpi_gbl_root_table_list.tables = NULL;
|
|
acpi_gbl_root_table_list.flags = 0;
|
|
acpi_gbl_root_table_list.current_table_count = 0;
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n"));
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return_VOID;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_delete_namespace_by_owner
|
|
*
|
|
* PARAMETERS: table_index - Table index
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Delete all namespace objects created when this table was loaded.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index)
|
|
{
|
|
acpi_owner_id owner_id;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner);
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (table_index >= acpi_gbl_root_table_list.current_table_count) {
|
|
|
|
/* The table index does not exist */
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS(AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Get the owner ID for this table, used to delete namespace nodes */
|
|
|
|
owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id;
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
|
|
/*
|
|
* Need to acquire the namespace writer lock to prevent interference
|
|
* with any concurrent namespace walks. The interpreter must be
|
|
* released during the deletion since the acquisition of the deletion
|
|
* lock may block, and also since the execution of a namespace walk
|
|
* must be allowed to use the interpreter.
|
|
*/
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
|
|
status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock);
|
|
|
|
acpi_ns_delete_namespace_by_owner(owner_id);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock);
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_allocate_owner_id
|
|
*
|
|
* PARAMETERS: table_index - Table index
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Allocates owner_id in table_desc
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_tb_allocate_owner_id(u32 table_index)
|
|
{
|
|
acpi_status status = AE_BAD_PARAMETER;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_allocate_owner_id);
|
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
|
if (table_index < acpi_gbl_root_table_list.current_table_count) {
|
|
status =
|
|
acpi_ut_allocate_owner_id(&
|
|
(acpi_gbl_root_table_list.
|
|
tables[table_index].owner_id));
|
|
}
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_release_owner_id
|
|
*
|
|
* PARAMETERS: table_index - Table index
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Releases owner_id in table_desc
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_tb_release_owner_id(u32 table_index)
|
|
{
|
|
acpi_status status = AE_BAD_PARAMETER;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_release_owner_id);
|
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
|
if (table_index < acpi_gbl_root_table_list.current_table_count) {
|
|
acpi_ut_release_owner_id(&
|
|
(acpi_gbl_root_table_list.
|
|
tables[table_index].owner_id));
|
|
status = AE_OK;
|
|
}
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_get_owner_id
|
|
*
|
|
* PARAMETERS: table_index - Table index
|
|
* owner_id - Where the table owner_id is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: returns owner_id for the ACPI table
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id * owner_id)
|
|
{
|
|
acpi_status status = AE_BAD_PARAMETER;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_get_owner_id);
|
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
|
if (table_index < acpi_gbl_root_table_list.current_table_count) {
|
|
*owner_id =
|
|
acpi_gbl_root_table_list.tables[table_index].owner_id;
|
|
status = AE_OK;
|
|
}
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_is_table_loaded
|
|
*
|
|
* PARAMETERS: table_index - Index into the root table
|
|
*
|
|
* RETURN: Table Loaded Flag
|
|
*
|
|
******************************************************************************/
|
|
|
|
u8 acpi_tb_is_table_loaded(u32 table_index)
|
|
{
|
|
u8 is_loaded = FALSE;
|
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
|
if (table_index < acpi_gbl_root_table_list.current_table_count) {
|
|
is_loaded = (u8)
|
|
(acpi_gbl_root_table_list.tables[table_index].flags &
|
|
ACPI_TABLE_IS_LOADED);
|
|
}
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
return (is_loaded);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_set_table_loaded_flag
|
|
*
|
|
* PARAMETERS: table_index - Table index
|
|
* is_loaded - TRUE if table is loaded, FALSE otherwise
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded)
|
|
{
|
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
|
if (table_index < acpi_gbl_root_table_list.current_table_count) {
|
|
if (is_loaded) {
|
|
acpi_gbl_root_table_list.tables[table_index].flags |=
|
|
ACPI_TABLE_IS_LOADED;
|
|
} else {
|
|
acpi_gbl_root_table_list.tables[table_index].flags &=
|
|
~ACPI_TABLE_IS_LOADED;
|
|
}
|
|
}
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
|
|
}
|