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1097 lines
30 KiB
1097 lines
30 KiB
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
|
/****************************************************************************** |
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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 - 2021, Intel Corp. |
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* |
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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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|
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#define _COMPONENT ACPI_TABLES |
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ACPI_MODULE_NAME("tbdata") |
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|
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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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|
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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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|
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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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/* |
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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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|
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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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|
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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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|
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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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|
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case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: |
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default: |
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|
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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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|
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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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|
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case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: |
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case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: |
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|
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table = table_desc->pointer; |
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break; |
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|
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default: |
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|
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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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* 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 |
|
acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc, |
|
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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|
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case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: |
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case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: |
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|
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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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* |
|
* FUNCTION: acpi_tb_release_temp_table |
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* |
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* PARAMETERS: table_desc - Table descriptor to be released |
|
* |
|
* 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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|
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return_ACPI_STATUS(status); |
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} |
|
|
|
/******************************************************************************* |
|
* |
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* FUNCTION: acpi_tb_invalidate_table |
|
* |
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* PARAMETERS: table_desc - Table descriptor |
|
* |
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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 |
|
* 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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|
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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, |
|
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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} |
|
|
|
/****************************************************************************** |
|
* |
|
* FUNCTION: acpi_tb_validate_temp_table |
|
* |
|
* PARAMETERS: table_desc - Table descriptor |
|
* |
|
* RETURN: Status |
|
* |
|
* DESCRIPTION: This function is called to validate the table, the returned |
|
* table descriptor is in "VALIDATED" state. |
|
* |
|
*****************************************************************************/ |
|
|
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acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc) |
|
{ |
|
|
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if (!table_desc->pointer && !acpi_gbl_enable_table_validation) { |
|
/* |
|
* Only validates the header of the table. |
|
* Note that Length contains the size of the mapping after invoking |
|
* this work around, this value is required by |
|
* acpi_tb_release_temp_table(). |
|
* We can do this because in acpi_init_table_descriptor(), the Length |
|
* field of the installed descriptor is filled with the actual |
|
* table length obtaining from the table header. |
|
*/ |
|
table_desc->length = sizeof(struct acpi_table_header); |
|
} |
|
|
|
return (acpi_tb_validate_table(table_desc)); |
|
} |
|
|
|
/******************************************************************************* |
|
* |
|
* FUNCTION: acpi_tb_check_duplication |
|
* |
|
* PARAMETERS: table_desc - Table descriptor |
|
* table_index - Where the table index is returned |
|
* |
|
* RETURN: Status |
|
* |
|
* DESCRIPTION: Avoid installing duplicated tables. However table override and |
|
* user aided dynamic table load is allowed, thus comparing the |
|
* address of the table is not sufficient, and checking the entire |
|
* table content is required. |
|
* |
|
******************************************************************************/ |
|
|
|
static acpi_status |
|
acpi_tb_check_duplication(struct acpi_table_desc *table_desc, u32 *table_index) |
|
{ |
|
u32 i; |
|
|
|
ACPI_FUNCTION_TRACE(tb_check_duplication); |
|
|
|
/* Check if table is already registered */ |
|
|
|
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) { |
|
|
|
/* Do not compare with unverified tables */ |
|
|
|
if (! |
|
(acpi_gbl_root_table_list.tables[i]. |
|
flags & ACPI_TABLE_IS_VERIFIED)) { |
|
continue; |
|
} |
|
|
|
/* |
|
* Check for a table match on the entire table length, |
|
* not just the header. |
|
*/ |
|
if (!acpi_tb_compare_tables(table_desc, i)) { |
|
continue; |
|
} |
|
|
|
/* |
|
* Note: the current mechanism does not unregister a table if it is |
|
* dynamically unloaded. The related namespace entries are deleted, |
|
* but the table remains in the root table list. |
|
* |
|
* The assumption here is that the number of different tables that |
|
* will be loaded is actually small, and there is minimal overhead |
|
* in just keeping the table in case it is needed again. |
|
* |
|
* If this assumption changes in the future (perhaps on large |
|
* machines with many table load/unload operations), tables will |
|
* need to be unregistered when they are unloaded, and slots in the |
|
* root table list should be reused when empty. |
|
*/ |
|
if (acpi_gbl_root_table_list.tables[i].flags & |
|
ACPI_TABLE_IS_LOADED) { |
|
|
|
/* Table is still loaded, this is an error */ |
|
|
|
return_ACPI_STATUS(AE_ALREADY_EXISTS); |
|
} else { |
|
*table_index = i; |
|
return_ACPI_STATUS(AE_CTRL_TERMINATE); |
|
} |
|
} |
|
|
|
/* Indicate no duplication to the caller */ |
|
|
|
return_ACPI_STATUS(AE_OK); |
|
} |
|
|
|
/****************************************************************************** |
|
* |
|
* FUNCTION: acpi_tb_verify_temp_table |
|
* |
|
* PARAMETERS: table_desc - Table descriptor |
|
* signature - Table signature to verify |
|
* table_index - Where the table index is returned |
|
* |
|
* RETURN: Status |
|
* |
|
* DESCRIPTION: This function is called to validate and verify the table, the |
|
* returned table descriptor is in "VALIDATED" state. |
|
* Note that 'TableIndex' is required to be set to !NULL to |
|
* enable duplication check. |
|
* |
|
*****************************************************************************/ |
|
|
|
acpi_status |
|
acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc, |
|
char *signature, u32 *table_index) |
|
{ |
|
acpi_status status = AE_OK; |
|
|
|
ACPI_FUNCTION_TRACE(tb_verify_temp_table); |
|
|
|
/* Validate the table */ |
|
|
|
status = acpi_tb_validate_temp_table(table_desc); |
|
if (ACPI_FAILURE(status)) { |
|
return_ACPI_STATUS(AE_NO_MEMORY); |
|
} |
|
|
|
/* If a particular signature is expected (DSDT/FACS), it must match */ |
|
|
|
if (signature && |
|
!ACPI_COMPARE_NAMESEG(&table_desc->signature, signature)) { |
|
ACPI_BIOS_ERROR((AE_INFO, |
|
"Invalid signature 0x%X for ACPI table, expected [%s]", |
|
table_desc->signature.integer, signature)); |
|
status = AE_BAD_SIGNATURE; |
|
goto invalidate_and_exit; |
|
} |
|
|
|
if (acpi_gbl_enable_table_validation) { |
|
|
|
/* Verify the checksum */ |
|
|
|
status = |
|
acpi_tb_verify_checksum(table_desc->pointer, |
|
table_desc->length); |
|
if (ACPI_FAILURE(status)) { |
|
ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, |
|
"%4.4s 0x%8.8X%8.8X" |
|
" Attempted table install failed", |
|
acpi_ut_valid_nameseg(table_desc-> |
|
signature. |
|
ascii) ? |
|
table_desc->signature.ascii : "????", |
|
ACPI_FORMAT_UINT64(table_desc-> |
|
address))); |
|
|
|
goto invalidate_and_exit; |
|
} |
|
|
|
/* Avoid duplications */ |
|
|
|
if (table_index) { |
|
status = |
|
acpi_tb_check_duplication(table_desc, table_index); |
|
if (ACPI_FAILURE(status)) { |
|
if (status != AE_CTRL_TERMINATE) { |
|
ACPI_EXCEPTION((AE_INFO, status, |
|
"%4.4s 0x%8.8X%8.8X" |
|
" Table is already loaded", |
|
acpi_ut_valid_nameseg |
|
(table_desc->signature. |
|
ascii) ? table_desc-> |
|
signature. |
|
ascii : "????", |
|
ACPI_FORMAT_UINT64 |
|
(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); |
|
} |
|
}
|
|
|