| /****************************************************************************** |
| * |
| * Module Name: tbdata - Table manager data structure functions |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2015, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include <acpi/acpi.h> |
| #include "accommon.h" |
| #include "acnamesp.h" |
| #include "actables.h" |
| |
| #define _COMPONENT ACPI_TABLES |
| ACPI_MODULE_NAME("tbdata") |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_init_table_descriptor |
| * |
| * PARAMETERS: table_desc - Table descriptor |
| * address - Physical address of the table |
| * flags - Allocation flags of the table |
| * table - Pointer to the table |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Initialize a new table descriptor |
| * |
| ******************************************************************************/ |
| void |
| acpi_tb_init_table_descriptor(struct acpi_table_desc *table_desc, |
| acpi_physical_address address, |
| u8 flags, struct acpi_table_header *table) |
| { |
| |
| /* |
| * Initialize the table descriptor. Set the pointer to NULL, since the |
| * table is not fully mapped at this time. |
| */ |
| ACPI_MEMSET(table_desc, 0, sizeof(struct acpi_table_desc)); |
| table_desc->address = address; |
| table_desc->length = table->length; |
| table_desc->flags = flags; |
| ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_acquire_table |
| * |
| * PARAMETERS: table_desc - Table descriptor |
| * table_ptr - Where table is returned |
| * table_length - Where table length is returned |
| * table_flags - Where table allocation flags are returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Acquire an ACPI table. It can be used for tables not |
| * maintained in the acpi_gbl_root_table_list. |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_tb_acquire_table(struct acpi_table_desc *table_desc, |
| struct acpi_table_header **table_ptr, |
| u32 *table_length, u8 *table_flags) |
| { |
| struct acpi_table_header *table = NULL; |
| |
| switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) { |
| case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: |
| |
| table = |
| acpi_os_map_memory(table_desc->address, table_desc->length); |
| break; |
| |
| case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: |
| case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: |
| |
| table = ACPI_CAST_PTR(struct acpi_table_header, |
| ACPI_PHYSADDR_TO_PTR(table_desc-> |
| address)); |
| break; |
| |
| default: |
| |
| break; |
| } |
| |
| /* Table is not valid yet */ |
| |
| if (!table) { |
| return (AE_NO_MEMORY); |
| } |
| |
| /* Fill the return values */ |
| |
| *table_ptr = table; |
| *table_length = table_desc->length; |
| *table_flags = table_desc->flags; |
| return (AE_OK); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_release_table |
| * |
| * PARAMETERS: table - Pointer for the table |
| * table_length - Length for the table |
| * table_flags - Allocation flags for the table |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Release a table. The inverse of acpi_tb_acquire_table(). |
| * |
| ******************************************************************************/ |
| |
| void |
| acpi_tb_release_table(struct acpi_table_header *table, |
| u32 table_length, u8 table_flags) |
| { |
| |
| switch (table_flags & ACPI_TABLE_ORIGIN_MASK) { |
| case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: |
| |
| acpi_os_unmap_memory(table, table_length); |
| break; |
| |
| case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: |
| case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: |
| default: |
| |
| break; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_acquire_temp_table |
| * |
| * PARAMETERS: table_desc - Table descriptor to be acquired |
| * address - Address of the table |
| * flags - Allocation flags of the table |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function validates the table header to obtain the length |
| * of a table and fills the table descriptor to make its state as |
| * "INSTALLED". Such a table descriptor is only used for verified |
| * installation. |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc, |
| acpi_physical_address address, u8 flags) |
| { |
| struct acpi_table_header *table_header; |
| |
| switch (flags & ACPI_TABLE_ORIGIN_MASK) { |
| case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: |
| |
| /* Get the length of the full table from the header */ |
| |
| table_header = |
| acpi_os_map_memory(address, |
| sizeof(struct acpi_table_header)); |
| if (!table_header) { |
| return (AE_NO_MEMORY); |
| } |
| |
| acpi_tb_init_table_descriptor(table_desc, address, flags, |
| table_header); |
| acpi_os_unmap_memory(table_header, |
| sizeof(struct acpi_table_header)); |
| return (AE_OK); |
| |
| case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: |
| case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: |
| |
| table_header = ACPI_CAST_PTR(struct acpi_table_header, |
| ACPI_PHYSADDR_TO_PTR(address)); |
| if (!table_header) { |
| return (AE_NO_MEMORY); |
| } |
| |
| acpi_tb_init_table_descriptor(table_desc, address, flags, |
| table_header); |
| return (AE_OK); |
| |
| default: |
| |
| break; |
| } |
| |
| /* Table is not valid yet */ |
| |
| return (AE_NO_MEMORY); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_release_temp_table |
| * |
| * PARAMETERS: table_desc - Table descriptor to be released |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: The inverse of acpi_tb_acquire_temp_table(). |
| * |
| *****************************************************************************/ |
| |
| void acpi_tb_release_temp_table(struct acpi_table_desc *table_desc) |
| { |
| |
| /* |
| * Note that the .Address is maintained by the callers of |
| * acpi_tb_acquire_temp_table(), thus do not invoke acpi_tb_uninstall_table() |
| * where .Address will be freed. |
| */ |
| acpi_tb_invalidate_table(table_desc); |
| } |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: acpi_tb_validate_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. |
| * |
| *****************************************************************************/ |
| |
| acpi_status acpi_tb_validate_table(struct acpi_table_desc *table_desc) |
| { |
| acpi_status status = AE_OK; |
| |
| ACPI_FUNCTION_TRACE(tb_validate_table); |
| |
| /* Validate the table if necessary */ |
| |
| if (!table_desc->pointer) { |
| status = acpi_tb_acquire_table(table_desc, &table_desc->pointer, |
| &table_desc->length, |
| &table_desc->flags); |
| if (!table_desc->pointer) { |
| status = AE_NO_MEMORY; |
| } |
| } |
| |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_invalidate_table |
| * |
| * PARAMETERS: table_desc - Table descriptor |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Invalidate one internal ACPI table, this is the inverse of |
| * acpi_tb_validate_table(). |
| * |
| ******************************************************************************/ |
| |
| void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc) |
| { |
| |
| ACPI_FUNCTION_TRACE(tb_invalidate_table); |
| |
| /* Table must be validated */ |
| |
| if (!table_desc->pointer) { |
| return_VOID; |
| } |
| |
| acpi_tb_release_table(table_desc->pointer, table_desc->length, |
| table_desc->flags); |
| table_desc->pointer = NULL; |
| |
| return_VOID; |
| } |
| |
| /****************************************************************************** |
| * |
| * 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. |
| * |
| *****************************************************************************/ |
| |
| acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc) |
| { |
| |
| if (!table_desc->pointer && !acpi_gbl_verify_table_checksum) { |
| /* |
| * 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_verify_temp_table |
| * |
| * PARAMETERS: table_desc - Table descriptor |
| * signature - Table signature to verify |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to validate and verify the table, the |
| * returned table descriptor is in "VALIDATED" state. |
| * |
| *****************************************************************************/ |
| |
| acpi_status |
| acpi_tb_verify_temp_table(struct acpi_table_desc * table_desc, char *signature) |
| { |
| 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_NAME(&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; |
| } |
| |
| /* Verify the checksum */ |
| |
| if (acpi_gbl_verify_table_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_acpi_name(table_desc-> |
| signature. |
| ascii) ? |
| table_desc->signature.ascii : "????", |
| ACPI_FORMAT_UINT64(table_desc-> |
| address))); |
| goto invalidate_and_exit; |
| } |
| } |
| |
| return_ACPI_STATUS(AE_OK); |
| |
| 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; |
| |
| 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; |
| } |
| |
| tables = ACPI_ALLOCATE_ZEROED(((acpi_size) table_count + |
| ACPI_ROOT_TABLE_SIZE_INCREMENT) * |
| 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 */ |
| |
| if (acpi_gbl_root_table_list.tables) { |
| ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, |
| (acpi_size) table_count * |
| sizeof(struct acpi_table_desc)); |
| |
| 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 = |
| table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT; |
| 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. |
| */ |
| (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); |
| status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock); |
| |
| acpi_ns_delete_namespace_by_owner(owner_id); |
| if (ACPI_FAILURE(status)) { |
| return_ACPI_STATUS(status); |
| } |
| |
| acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock); |
| |
| status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER); |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_allocate_owner_id |
| * |
| * PARAMETERS: table_index - Table index |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Allocates owner_id in table_desc |
| * |
| ******************************************************************************/ |
| |
| acpi_status acpi_tb_allocate_owner_id(u32 table_index) |
| { |
| acpi_status status = AE_BAD_PARAMETER; |
| |
| ACPI_FUNCTION_TRACE(tb_allocate_owner_id); |
| |
| (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
| if (table_index < acpi_gbl_root_table_list.current_table_count) { |
| status = |
| acpi_ut_allocate_owner_id(& |
| (acpi_gbl_root_table_list. |
| tables[table_index].owner_id)); |
| } |
| |
| (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_release_owner_id |
| * |
| * PARAMETERS: table_index - Table index |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Releases owner_id in table_desc |
| * |
| ******************************************************************************/ |
| |
| acpi_status acpi_tb_release_owner_id(u32 table_index) |
| { |
| acpi_status status = AE_BAD_PARAMETER; |
| |
| ACPI_FUNCTION_TRACE(tb_release_owner_id); |
| |
| (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
| if (table_index < acpi_gbl_root_table_list.current_table_count) { |
| acpi_ut_release_owner_id(& |
| (acpi_gbl_root_table_list. |
| tables[table_index].owner_id)); |
| status = AE_OK; |
| } |
| |
| (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_get_owner_id |
| * |
| * PARAMETERS: table_index - Table index |
| * owner_id - Where the table owner_id is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: returns owner_id for the ACPI table |
| * |
| ******************************************************************************/ |
| |
| acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id * owner_id) |
| { |
| acpi_status status = AE_BAD_PARAMETER; |
| |
| ACPI_FUNCTION_TRACE(tb_get_owner_id); |
| |
| (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
| if (table_index < acpi_gbl_root_table_list.current_table_count) { |
| *owner_id = |
| acpi_gbl_root_table_list.tables[table_index].owner_id; |
| status = AE_OK; |
| } |
| |
| (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_is_table_loaded |
| * |
| * PARAMETERS: table_index - Index into the root table |
| * |
| * RETURN: Table Loaded Flag |
| * |
| ******************************************************************************/ |
| |
| u8 acpi_tb_is_table_loaded(u32 table_index) |
| { |
| u8 is_loaded = FALSE; |
| |
| (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
| if (table_index < acpi_gbl_root_table_list.current_table_count) { |
| is_loaded = (u8) |
| (acpi_gbl_root_table_list.tables[table_index].flags & |
| ACPI_TABLE_IS_LOADED); |
| } |
| |
| (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
| return (is_loaded); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_tb_set_table_loaded_flag |
| * |
| * PARAMETERS: table_index - Table index |
| * is_loaded - TRUE if table is loaded, FALSE otherwise |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. |
| * |
| ******************************************************************************/ |
| |
| void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded) |
| { |
| |
| (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
| if (table_index < acpi_gbl_root_table_list.current_table_count) { |
| if (is_loaded) { |
| acpi_gbl_root_table_list.tables[table_index].flags |= |
| ACPI_TABLE_IS_LOADED; |
| } else { |
| acpi_gbl_root_table_list.tables[table_index].flags &= |
| ~ACPI_TABLE_IS_LOADED; |
| } |
| } |
| |
| (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
| } |