540 lines
15 KiB
C
540 lines
15 KiB
C
/******************************************************************************
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*
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* Module Name: tbinstal - ACPI table installation and removal
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2007, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acnamesp.h>
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#include <acpi/actables.h>
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#define _COMPONENT ACPI_TABLES
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ACPI_MODULE_NAME("tbinstal")
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/******************************************************************************
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*
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* FUNCTION: acpi_tb_verify_table
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*
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* PARAMETERS: table_desc - table
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*
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* RETURN: Status
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*
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* DESCRIPTION: this function is called to verify and map table
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*
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*****************************************************************************/
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acpi_status acpi_tb_verify_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_verify_table);
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/* Map the table if necessary */
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if (!table_desc->pointer) {
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if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) ==
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ACPI_TABLE_ORIGIN_MAPPED) {
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table_desc->pointer =
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acpi_os_map_memory(table_desc->address,
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table_desc->length);
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}
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if (!table_desc->pointer) {
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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}
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/* FACS is the odd table, has no standard ACPI header and no checksum */
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if (!ACPI_COMPARE_NAME(&table_desc->signature, ACPI_SIG_FACS)) {
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/* Always calculate checksum, ignore bad checksum if requested */
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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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}
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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_add_table
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*
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* PARAMETERS: table_desc - Table descriptor
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* table_index - Where the table index is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to add the ACPI table
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*
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******************************************************************************/
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acpi_status
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acpi_tb_add_table(struct acpi_table_desc *table_desc,
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acpi_native_uint * table_index)
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{
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acpi_native_uint i;
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acpi_native_uint length;
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE(tb_add_table);
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if (!table_desc->pointer) {
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status = acpi_tb_verify_table(table_desc);
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if (ACPI_FAILURE(status) || !table_desc->pointer) {
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return_ACPI_STATUS(status);
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}
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}
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/* The table must be either an SSDT or a PSDT */
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if ((!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_PSDT))
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&&
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(!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT)))
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{
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ACPI_ERROR((AE_INFO,
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"Table has invalid signature [%4.4s], must be SSDT or PSDT",
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table_desc->pointer->signature));
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return_ACPI_STATUS(AE_BAD_SIGNATURE);
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}
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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/* Check if table is already registered */
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for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
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if (!acpi_gbl_root_table_list.tables[i].pointer) {
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status =
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acpi_tb_verify_table(&acpi_gbl_root_table_list.
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tables[i]);
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if (ACPI_FAILURE(status)
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|| !acpi_gbl_root_table_list.tables[i].pointer) {
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continue;
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}
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}
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length = ACPI_MIN(table_desc->length,
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acpi_gbl_root_table_list.tables[i].length);
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if (ACPI_MEMCMP(table_desc->pointer,
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acpi_gbl_root_table_list.tables[i].pointer,
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length)) {
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continue;
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}
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/* Table is already registered */
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acpi_tb_delete_table(table_desc);
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*table_index = i;
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goto release;
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}
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/*
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* Add the table to the global table list
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*/
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status = acpi_tb_store_table(table_desc->address, table_desc->pointer,
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table_desc->length, table_desc->flags,
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table_index);
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if (ACPI_FAILURE(status)) {
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goto release;
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}
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acpi_tb_print_table_header(table_desc->address, table_desc->pointer);
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release:
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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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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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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tables = ACPI_ALLOCATE_ZEROED((acpi_gbl_root_table_list.size +
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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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ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables,
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acpi_gbl_root_table_list.size *
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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.size += ACPI_ROOT_TABLE_SIZE_INCREMENT;
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acpi_gbl_root_table_list.flags |= (u8) 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_store_table
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*
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* PARAMETERS: Address - Table address
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* Table - Table header
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* Length - Table length
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* Flags - flags
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*
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* RETURN: Status and table index.
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*
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* DESCRIPTION: Add an ACPI table 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_store_table(acpi_physical_address address,
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struct acpi_table_header *table,
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u32 length, u8 flags, acpi_native_uint * table_index)
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{
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acpi_status status = AE_OK;
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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.count >= acpi_gbl_root_table_list.size) {
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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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/* Initialize added table */
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acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
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address = address;
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acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
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pointer = table;
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acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].length =
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length;
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acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
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owner_id = 0;
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acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].flags =
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flags;
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ACPI_MOVE_32_TO_32(&
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(acpi_gbl_root_table_list.
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tables[acpi_gbl_root_table_list.count].signature),
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table->signature);
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*table_index = acpi_gbl_root_table_list.count;
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acpi_gbl_root_table_list.count++;
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return (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_delete_table
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*
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* PARAMETERS: table_index - Table index
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*
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* RETURN: None
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*
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* DESCRIPTION: Delete one internal ACPI table
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*
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******************************************************************************/
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void acpi_tb_delete_table(struct acpi_table_desc *table_desc)
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{
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/* Table must be mapped or allocated */
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if (!table_desc->pointer) {
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return;
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}
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switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
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case ACPI_TABLE_ORIGIN_MAPPED:
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acpi_os_unmap_memory(table_desc->pointer, table_desc->length);
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break;
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case ACPI_TABLE_ORIGIN_ALLOCATED:
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ACPI_FREE(table_desc->pointer);
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break;
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default:;
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}
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table_desc->pointer = NULL;
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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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acpi_native_uint 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.count; ++i) {
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acpi_tb_delete_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
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* mapped, so we don't need to check for that flag.
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*/
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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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acpi_gbl_root_table_list.tables = NULL;
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acpi_gbl_root_table_list.flags = 0;
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acpi_gbl_root_table_list.count = 0;
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n"));
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_delete_namespace_by_owner
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*
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* PARAMETERS: table_index - Table index
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*
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* RETURN: None
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*
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* DESCRIPTION: Delete all namespace objects created when this table was loaded.
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*
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******************************************************************************/
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void acpi_tb_delete_namespace_by_owner(acpi_native_uint table_index)
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{
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acpi_owner_id owner_id;
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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if (table_index < acpi_gbl_root_table_list.count) {
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owner_id =
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acpi_gbl_root_table_list.tables[table_index].owner_id;
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} else {
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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return;
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}
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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acpi_ns_delete_namespace_by_owner(owner_id);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_allocate_owner_id
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*
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* PARAMETERS: table_index - Table index
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*
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* RETURN: Status
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*
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* DESCRIPTION: Allocates owner_id in table_desc
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*
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******************************************************************************/
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acpi_status acpi_tb_allocate_owner_id(acpi_native_uint table_index)
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{
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acpi_status status = AE_BAD_PARAMETER;
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ACPI_FUNCTION_TRACE(tb_allocate_owner_id);
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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if (table_index < acpi_gbl_root_table_list.count) {
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status = acpi_ut_allocate_owner_id
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(&(acpi_gbl_root_table_list.tables[table_index].owner_id));
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}
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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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_release_owner_id
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*
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* PARAMETERS: table_index - Table index
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*
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* RETURN: Status
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*
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* DESCRIPTION: Releases owner_id in table_desc
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*
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******************************************************************************/
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acpi_status acpi_tb_release_owner_id(acpi_native_uint table_index)
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{
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acpi_status status = AE_BAD_PARAMETER;
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ACPI_FUNCTION_TRACE(tb_release_owner_id);
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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if (table_index < acpi_gbl_root_table_list.count) {
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acpi_ut_release_owner_id(&
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(acpi_gbl_root_table_list.
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tables[table_index].owner_id));
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status = AE_OK;
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}
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_get_owner_id
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*
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* PARAMETERS: table_index - Table index
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* owner_id - Where the table owner_id is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: returns owner_id for the ACPI table
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_owner_id(acpi_native_uint table_index, acpi_owner_id * owner_id)
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{
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acpi_status status = AE_BAD_PARAMETER;
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ACPI_FUNCTION_TRACE(tb_get_owner_id);
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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if (table_index < acpi_gbl_root_table_list.count) {
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*owner_id =
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acpi_gbl_root_table_list.tables[table_index].owner_id;
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status = AE_OK;
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}
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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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_is_table_loaded
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*
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* PARAMETERS: table_index - Table index
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*
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* RETURN: Table Loaded Flag
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*
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******************************************************************************/
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u8 acpi_tb_is_table_loaded(acpi_native_uint table_index)
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{
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u8 is_loaded = FALSE;
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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if (table_index < acpi_gbl_root_table_list.count) {
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is_loaded = (u8)
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(acpi_gbl_root_table_list.tables[table_index].
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flags & ACPI_TABLE_IS_LOADED);
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}
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(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
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return (is_loaded);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_set_table_loaded_flag
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*
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* PARAMETERS: table_index - Table index
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* is_loaded - TRUE if table is loaded, FALSE otherwise
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*
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* RETURN: None
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*
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* DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
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*
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******************************************************************************/
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void acpi_tb_set_table_loaded_flag(acpi_native_uint table_index, u8 is_loaded)
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{
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(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
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if (table_index < acpi_gbl_root_table_list.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);
|
|
}
|