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![Bob Moore](/assets/img/avatar_default.png)
ACPICA commit 738d7b0726e6c0458ef93c0a01c0377490888d1e Affects all source modules and utility signons. Link: https://github.com/acpica/acpica/commit/738d7b07 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
1097 lines
30 KiB
C
1097 lines
30 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/******************************************************************************
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*
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* Module Name: tbdata - Table manager data structure functions
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*
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* Copyright (C) 2000 - 2022, Intel Corp.
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*
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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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#include "acevents.h"
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#define _COMPONENT ACPI_TABLES
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ACPI_MODULE_NAME("tbdata")
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/* Local prototypes */
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static acpi_status
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acpi_tb_check_duplication(struct acpi_table_desc *table_desc, u32 *table_index);
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static u8
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acpi_tb_compare_tables(struct acpi_table_desc *table_desc, u32 table_index);
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_compare_tables
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*
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* PARAMETERS: table_desc - Table 1 descriptor to be compared
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* table_index - Index of table 2 to be compared
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*
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* RETURN: TRUE if both tables are identical.
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*
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* DESCRIPTION: This function compares a table with another table that has
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* already been installed in the root table list.
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*
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******************************************************************************/
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static u8
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acpi_tb_compare_tables(struct acpi_table_desc *table_desc, u32 table_index)
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{
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acpi_status status = AE_OK;
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u8 is_identical;
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struct acpi_table_header *table;
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u32 table_length;
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u8 table_flags;
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status =
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acpi_tb_acquire_table(&acpi_gbl_root_table_list.tables[table_index],
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&table, &table_length, &table_flags);
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if (ACPI_FAILURE(status)) {
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return (FALSE);
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}
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/*
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* Check for a table match on the entire table length,
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* not just the header.
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*/
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is_identical = (u8)((table_desc->length != table_length ||
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memcmp(table_desc->pointer, table, table_length)) ?
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FALSE : TRUE);
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/* Release the acquired table */
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acpi_tb_release_table(table, table_length, table_flags);
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return (is_identical);
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}
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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 for external
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* tables, since the 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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switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
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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_desc->pointer = table;
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break;
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case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
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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_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 = table_desc->pointer;
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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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* table - Pointer to the table (required for virtual
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* origins, optional for physical)
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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,
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u8 flags, struct acpi_table_header *table)
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{
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u8 mapped_table = FALSE;
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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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if (!table) {
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table =
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acpi_os_map_memory(address,
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sizeof(struct
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acpi_table_header));
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if (!table) {
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return (AE_NO_MEMORY);
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}
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mapped_table = TRUE;
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}
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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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if (!table) {
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return (AE_BAD_PARAMETER);
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}
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break;
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default:
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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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acpi_tb_init_table_descriptor(table_desc, address, flags, table);
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if (mapped_table) {
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acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
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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_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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switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
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case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
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table_desc->pointer = NULL;
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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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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_enable_table_validation) {
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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_check_duplication
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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: Avoid installing duplicated tables. However table override and
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* user aided dynamic table load is allowed, thus comparing the
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* address of the table is not sufficient, and checking the entire
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* table content is required.
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*
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******************************************************************************/
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static acpi_status
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acpi_tb_check_duplication(struct acpi_table_desc *table_desc, u32 *table_index)
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{
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u32 i;
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ACPI_FUNCTION_TRACE(tb_check_duplication);
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/* Check if table is already registered */
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for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
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/* Do not compare with unverified tables */
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if (!
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(acpi_gbl_root_table_list.tables[i].
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flags & ACPI_TABLE_IS_VERIFIED)) {
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continue;
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}
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/*
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* Check for a table match on the entire table length,
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* not just the header.
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*/
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if (!acpi_tb_compare_tables(table_desc, i)) {
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continue;
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}
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/*
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* Note: the current mechanism does not unregister a table if it is
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* dynamically unloaded. The related namespace entries are deleted,
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* but the table remains in the root table list.
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*
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* The assumption here is that the number of different tables that
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* will be loaded is actually small, and there is minimal overhead
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* in just keeping the table in case it is needed again.
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*
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* If this assumption changes in the future (perhaps on large
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* machines with many table load/unload operations), tables will
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* need to be unregistered when they are unloaded, and slots in the
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* root table list should be reused when empty.
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*/
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if (acpi_gbl_root_table_list.tables[i].flags &
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ACPI_TABLE_IS_LOADED) {
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/* Table is still loaded, this is an error */
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return_ACPI_STATUS(AE_ALREADY_EXISTS);
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} else {
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*table_index = i;
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return_ACPI_STATUS(AE_CTRL_TERMINATE);
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}
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}
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/* Indicate no duplication to the caller */
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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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|
*
|
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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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* 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 validate and verify the table, the
|
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* returned table descriptor is in "VALIDATED" state.
|
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* Note that 'TableIndex' is required to be set to !NULL to
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* enable duplication check.
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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,
|
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char *signature, u32 *table_index)
|
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{
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acpi_status status = AE_OK;
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|
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ACPI_FUNCTION_TRACE(tb_verify_temp_table);
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|
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/* Validate the table */
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|
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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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|
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/* If a particular signature is expected (DSDT/FACS), it must match */
|
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|
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if (signature &&
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!ACPI_COMPARE_NAMESEG(&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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if (acpi_gbl_enable_table_validation) {
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|
|
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/* Verify the 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_nameseg(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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/* Avoid duplications */
|
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|
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if (table_index) {
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status =
|
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acpi_tb_check_duplication(table_desc, table_index);
|
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if (ACPI_FAILURE(status)) {
|
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if (status != AE_CTRL_TERMINATE) {
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ACPI_EXCEPTION((AE_INFO, status,
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"%4.4s 0x%8.8X%8.8X"
|
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" Table is already loaded",
|
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acpi_ut_valid_nameseg
|
|
(table_desc->signature.
|
|
ascii) ? table_desc->
|
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signature.
|
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ascii : "????",
|
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ACPI_FORMAT_UINT64
|
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(table_desc->address)));
|
|
}
|
|
|
|
goto invalidate_and_exit;
|
|
}
|
|
}
|
|
|
|
table_desc->flags |= ACPI_TABLE_IS_VERIFIED;
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
invalidate_and_exit:
|
|
acpi_tb_invalidate_table(table_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_resize_root_table_list
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Expand the size of global table array
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_tb_resize_root_table_list(void)
|
|
{
|
|
struct acpi_table_desc *tables;
|
|
u32 table_count;
|
|
u32 current_table_count, max_table_count;
|
|
u32 i;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_resize_root_table_list);
|
|
|
|
/* allow_resize flag is a parameter to acpi_initialize_tables */
|
|
|
|
if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Resize of Root Table Array is not allowed"));
|
|
return_ACPI_STATUS(AE_SUPPORT);
|
|
}
|
|
|
|
/* Increase the Table Array size */
|
|
|
|
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
|
|
table_count = acpi_gbl_root_table_list.max_table_count;
|
|
} else {
|
|
table_count = acpi_gbl_root_table_list.current_table_count;
|
|
}
|
|
|
|
max_table_count = table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT;
|
|
tables = ACPI_ALLOCATE_ZEROED(((acpi_size)max_table_count) *
|
|
sizeof(struct acpi_table_desc));
|
|
if (!tables) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Could not allocate new root table array"));
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Copy and free the previous table array */
|
|
|
|
current_table_count = 0;
|
|
if (acpi_gbl_root_table_list.tables) {
|
|
for (i = 0; i < table_count; i++) {
|
|
if (acpi_gbl_root_table_list.tables[i].address) {
|
|
memcpy(tables + current_table_count,
|
|
acpi_gbl_root_table_list.tables + i,
|
|
sizeof(struct acpi_table_desc));
|
|
current_table_count++;
|
|
}
|
|
}
|
|
|
|
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 = tables;
|
|
acpi_gbl_root_table_list.max_table_count = max_table_count;
|
|
acpi_gbl_root_table_list.current_table_count = current_table_count;
|
|
acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED;
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_get_next_table_descriptor
|
|
*
|
|
* PARAMETERS: table_index - Where table index is returned
|
|
* table_desc - Where table descriptor is returned
|
|
*
|
|
* RETURN: Status and table index/descriptor.
|
|
*
|
|
* DESCRIPTION: Allocate a new ACPI table entry to the global table list
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_tb_get_next_table_descriptor(u32 *table_index,
|
|
struct acpi_table_desc **table_desc)
|
|
{
|
|
acpi_status status;
|
|
u32 i;
|
|
|
|
/* Ensure that there is room for the table in the Root Table List */
|
|
|
|
if (acpi_gbl_root_table_list.current_table_count >=
|
|
acpi_gbl_root_table_list.max_table_count) {
|
|
status = acpi_tb_resize_root_table_list();
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
i = acpi_gbl_root_table_list.current_table_count;
|
|
acpi_gbl_root_table_list.current_table_count++;
|
|
|
|
if (table_index) {
|
|
*table_index = i;
|
|
}
|
|
if (table_desc) {
|
|
*table_desc = &acpi_gbl_root_table_list.tables[i];
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_terminate
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Delete all internal ACPI tables
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_tb_terminate(void)
|
|
{
|
|
u32 i;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_terminate);
|
|
|
|
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
|
|
|
|
/* Delete the individual tables */
|
|
|
|
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
|
|
acpi_tb_uninstall_table(&acpi_gbl_root_table_list.tables[i]);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
acpi_ns_delete_namespace_by_owner(owner_id);
|
|
acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock);
|
|
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);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_load_table
|
|
*
|
|
* PARAMETERS: table_index - Table index
|
|
* parent_node - Where table index is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load an ACPI table
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_tb_load_table(u32 table_index, struct acpi_namespace_node *parent_node)
|
|
{
|
|
struct acpi_table_header *table;
|
|
acpi_status status;
|
|
acpi_owner_id owner_id;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_load_table);
|
|
|
|
/*
|
|
* Note: Now table is "INSTALLED", it must be validated before
|
|
* using.
|
|
*/
|
|
status = acpi_get_table_by_index(table_index, &table);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
status = acpi_ns_load_table(table_index, parent_node);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*
|
|
* Update GPEs for any new _Lxx/_Exx methods. Ignore errors. The host is
|
|
* responsible for discovering any new wake GPEs by running _PRW methods
|
|
* that may have been loaded by this table.
|
|
*/
|
|
status = acpi_tb_get_owner_id(table_index, &owner_id);
|
|
if (ACPI_SUCCESS(status)) {
|
|
acpi_ev_update_gpes(owner_id);
|
|
}
|
|
|
|
/* Invoke table handler */
|
|
|
|
acpi_tb_notify_table(ACPI_TABLE_EVENT_LOAD, table);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_install_and_load_table
|
|
*
|
|
* PARAMETERS: address - Physical address of the table
|
|
* flags - Allocation flags of the table
|
|
* table - Pointer to the table (required for
|
|
* virtual origins, optional for
|
|
* physical)
|
|
* override - Whether override should be performed
|
|
* table_index - Where table index is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install and load an ACPI table
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_tb_install_and_load_table(acpi_physical_address address,
|
|
u8 flags,
|
|
struct acpi_table_header *table,
|
|
u8 override, u32 *table_index)
|
|
{
|
|
acpi_status status;
|
|
u32 i;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_install_and_load_table);
|
|
|
|
/* Install the table and load it into the namespace */
|
|
|
|
status = acpi_tb_install_standard_table(address, flags, table, TRUE,
|
|
override, &i);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto exit;
|
|
}
|
|
|
|
status = acpi_tb_load_table(i, acpi_gbl_root_node);
|
|
|
|
exit:
|
|
*table_index = i;
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_tb_install_and_load_table)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_unload_table
|
|
*
|
|
* PARAMETERS: table_index - Table index
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Unload an ACPI table
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_tb_unload_table(u32 table_index)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
struct acpi_table_header *table;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_unload_table);
|
|
|
|
/* Ensure the table is still loaded */
|
|
|
|
if (!acpi_tb_is_table_loaded(table_index)) {
|
|
return_ACPI_STATUS(AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Invoke table handler */
|
|
|
|
status = acpi_get_table_by_index(table_index, &table);
|
|
if (ACPI_SUCCESS(status)) {
|
|
acpi_tb_notify_table(ACPI_TABLE_EVENT_UNLOAD, table);
|
|
}
|
|
|
|
/* Delete the portion of the namespace owned by this table */
|
|
|
|
status = acpi_tb_delete_namespace_by_owner(table_index);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
(void)acpi_tb_release_owner_id(table_index);
|
|
acpi_tb_set_table_loaded_flag(table_index, FALSE);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_tb_unload_table)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_notify_table
|
|
*
|
|
* PARAMETERS: event - Table event
|
|
* table - Validated table pointer
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Notify a table event to the users.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_tb_notify_table(u32 event, void *table)
|
|
{
|
|
/* Invoke table handler if present */
|
|
|
|
if (acpi_gbl_table_handler) {
|
|
(void)acpi_gbl_table_handler(event, table,
|
|
acpi_gbl_table_handler_context);
|
|
}
|
|
}
|