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Diffstat (limited to 'drivers/acpi/executer/exconfig.c')
| -rw-r--r-- | drivers/acpi/executer/exconfig.c | 536 |
1 files changed, 0 insertions, 536 deletions
diff --git a/drivers/acpi/executer/exconfig.c b/drivers/acpi/executer/exconfig.c deleted file mode 100644 index be32d0105fe2..000000000000 --- a/drivers/acpi/executer/exconfig.c +++ /dev/null @@ -1,536 +0,0 @@ -/****************************************************************************** - * - * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes) - * - *****************************************************************************/ - -/* - * Copyright (C) 2000 - 2008, 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 <acpi/accommon.h> -#include <acpi/acinterp.h> -#include <acpi/acnamesp.h> -#include <acpi/actables.h> -#include <acpi/acdispat.h> - -#define _COMPONENT ACPI_EXECUTER -ACPI_MODULE_NAME("exconfig") - -/* Local prototypes */ -static acpi_status -acpi_ex_add_table(u32 table_index, - struct acpi_namespace_node *parent_node, - union acpi_operand_object **ddb_handle); - -/******************************************************************************* - * - * FUNCTION: acpi_ex_add_table - * - * PARAMETERS: Table - Pointer to raw table - * parent_node - Where to load the table (scope) - * ddb_handle - Where to return the table handle. - * - * RETURN: Status - * - * DESCRIPTION: Common function to Install and Load an ACPI table with a - * returned table handle. - * - ******************************************************************************/ - -static acpi_status -acpi_ex_add_table(u32 table_index, - struct acpi_namespace_node *parent_node, - union acpi_operand_object **ddb_handle) -{ - acpi_status status; - union acpi_operand_object *obj_desc; - - ACPI_FUNCTION_TRACE(ex_add_table); - - /* Create an object to be the table handle */ - - obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); - if (!obj_desc) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* Init the table handle */ - - obj_desc->reference.class = ACPI_REFCLASS_TABLE; - *ddb_handle = obj_desc; - - /* Install the new table into the local data structures */ - - obj_desc->reference.value = table_index; - - /* Add the table to the namespace */ - - status = acpi_ns_load_table(table_index, parent_node); - if (ACPI_FAILURE(status)) { - acpi_ut_remove_reference(obj_desc); - *ddb_handle = NULL; - } - - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_load_table_op - * - * PARAMETERS: walk_state - Current state with operands - * return_desc - Where to store the return object - * - * RETURN: Status - * - * DESCRIPTION: Load an ACPI table from the RSDT/XSDT - * - ******************************************************************************/ - -acpi_status -acpi_ex_load_table_op(struct acpi_walk_state *walk_state, - union acpi_operand_object **return_desc) -{ - acpi_status status; - union acpi_operand_object **operand = &walk_state->operands[0]; - struct acpi_namespace_node *parent_node; - struct acpi_namespace_node *start_node; - struct acpi_namespace_node *parameter_node = NULL; - union acpi_operand_object *ddb_handle; - struct acpi_table_header *table; - u32 table_index; - - ACPI_FUNCTION_TRACE(ex_load_table_op); - - /* Validate lengths for the signature_string, OEMIDString, OEMtable_iD */ - - if ((operand[0]->string.length > ACPI_NAME_SIZE) || - (operand[1]->string.length > ACPI_OEM_ID_SIZE) || - (operand[2]->string.length > ACPI_OEM_TABLE_ID_SIZE)) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* Find the ACPI table in the RSDT/XSDT */ - - status = acpi_tb_find_table(operand[0]->string.pointer, - operand[1]->string.pointer, - operand[2]->string.pointer, &table_index); - if (ACPI_FAILURE(status)) { - if (status != AE_NOT_FOUND) { - return_ACPI_STATUS(status); - } - - /* Table not found, return an Integer=0 and AE_OK */ - - ddb_handle = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); - if (!ddb_handle) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - ddb_handle->integer.value = 0; - *return_desc = ddb_handle; - - return_ACPI_STATUS(AE_OK); - } - - /* Default nodes */ - - start_node = walk_state->scope_info->scope.node; - parent_node = acpi_gbl_root_node; - - /* root_path (optional parameter) */ - - if (operand[3]->string.length > 0) { - /* - * Find the node referenced by the root_path_string. This is the - * location within the namespace where the table will be loaded. - */ - status = - acpi_ns_get_node(start_node, operand[3]->string.pointer, - ACPI_NS_SEARCH_PARENT, &parent_node); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } - - /* parameter_path (optional parameter) */ - - if (operand[4]->string.length > 0) { - if ((operand[4]->string.pointer[0] != '\\') && - (operand[4]->string.pointer[0] != '^')) { - /* - * Path is not absolute, so it will be relative to the node - * referenced by the root_path_string (or the NS root if omitted) - */ - start_node = parent_node; - } - - /* Find the node referenced by the parameter_path_string */ - - status = - acpi_ns_get_node(start_node, operand[4]->string.pointer, - ACPI_NS_SEARCH_PARENT, ¶meter_node); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } - - /* Load the table into the namespace */ - - status = acpi_ex_add_table(table_index, parent_node, &ddb_handle); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Parameter Data (optional) */ - - if (parameter_node) { - - /* Store the parameter data into the optional parameter object */ - - status = acpi_ex_store(operand[5], - ACPI_CAST_PTR(union acpi_operand_object, - parameter_node), - walk_state); - if (ACPI_FAILURE(status)) { - (void)acpi_ex_unload_table(ddb_handle); - return_ACPI_STATUS(status); - } - } - - status = acpi_get_table_by_index(table_index, &table); - if (ACPI_SUCCESS(status)) { - ACPI_INFO((AE_INFO, - "Dynamic OEM Table Load - [%.4s] OemId [%.6s] OemTableId [%.8s]", - table->signature, table->oem_id, - table->oem_table_id)); - } - - /* Invoke table handler if present */ - - if (acpi_gbl_table_handler) { - (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table, - acpi_gbl_table_handler_context); - } - - *return_desc = ddb_handle; - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_load_op - * - * PARAMETERS: obj_desc - Region or Buffer/Field where the table will be - * obtained - * Target - Where a handle to the table will be stored - * walk_state - Current state - * - * RETURN: Status - * - * DESCRIPTION: Load an ACPI table from a field or operation region - * - * NOTE: Region Fields (Field, bank_field, index_fields) are resolved to buffer - * objects before this code is reached. - * - * If source is an operation region, it must refer to system_memory, as - * per the ACPI specification. - * - ******************************************************************************/ - -acpi_status -acpi_ex_load_op(union acpi_operand_object *obj_desc, - union acpi_operand_object *target, - struct acpi_walk_state *walk_state) -{ - union acpi_operand_object *ddb_handle; - struct acpi_table_header *table; - struct acpi_table_desc table_desc; - u32 table_index; - acpi_status status; - u32 length; - - ACPI_FUNCTION_TRACE(ex_load_op); - - ACPI_MEMSET(&table_desc, 0, sizeof(struct acpi_table_desc)); - - /* Source Object can be either an op_region or a Buffer/Field */ - - switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { - case ACPI_TYPE_REGION: - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Load table from Region %p\n", obj_desc)); - - /* Region must be system_memory (from ACPI spec) */ - - if (obj_desc->region.space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) { - return_ACPI_STATUS(AE_AML_OPERAND_TYPE); - } - - /* - * If the Region Address and Length have not been previously evaluated, - * evaluate them now and save the results. - */ - if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) { - status = acpi_ds_get_region_arguments(obj_desc); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } - - /* - * Map the table header and get the actual table length. The region - * length is not guaranteed to be the same as the table length. - */ - table = acpi_os_map_memory(obj_desc->region.address, - sizeof(struct acpi_table_header)); - if (!table) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - length = table->length; - acpi_os_unmap_memory(table, sizeof(struct acpi_table_header)); - - /* Must have at least an ACPI table header */ - - if (length < sizeof(struct acpi_table_header)) { - return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH); - } - - /* - * The memory region is not guaranteed to remain stable and we must - * copy the table to a local buffer. For example, the memory region - * is corrupted after suspend on some machines. Dynamically loaded - * tables are usually small, so this overhead is minimal. - */ - - /* Allocate a buffer for the table */ - - table_desc.pointer = ACPI_ALLOCATE(length); - if (!table_desc.pointer) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* Map the entire table and copy it */ - - table = acpi_os_map_memory(obj_desc->region.address, length); - if (!table) { - ACPI_FREE(table_desc.pointer); - return_ACPI_STATUS(AE_NO_MEMORY); - } - - ACPI_MEMCPY(table_desc.pointer, table, length); - acpi_os_unmap_memory(table, length); - - table_desc.address = obj_desc->region.address; - break; - - case ACPI_TYPE_BUFFER: /* Buffer or resolved region_field */ - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Load table from Buffer or Field %p\n", - obj_desc)); - - /* Must have at least an ACPI table header */ - - if (obj_desc->buffer.length < sizeof(struct acpi_table_header)) { - return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH); - } - - /* Get the actual table length from the table header */ - - table = - ACPI_CAST_PTR(struct acpi_table_header, - obj_desc->buffer.pointer); - length = table->length; - - /* Table cannot extend beyond the buffer */ - - if (length > obj_desc->buffer.length) { - return_ACPI_STATUS(AE_AML_BUFFER_LIMIT); - } - if (length < sizeof(struct acpi_table_header)) { - return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH); - } - - /* - * Copy the table from the buffer because the buffer could be modified - * or even deleted in the future - */ - table_desc.pointer = ACPI_ALLOCATE(length); - if (!table_desc.pointer) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - ACPI_MEMCPY(table_desc.pointer, table, length); - table_desc.address = ACPI_TO_INTEGER(table_desc.pointer); - break; - - default: - return_ACPI_STATUS(AE_AML_OPERAND_TYPE); - } - - /* Validate table checksum (will not get validated in tb_add_table) */ - - status = acpi_tb_verify_checksum(table_desc.pointer, length); - if (ACPI_FAILURE(status)) { - ACPI_FREE(table_desc.pointer); - return_ACPI_STATUS(status); - } - - /* Complete the table descriptor */ - - table_desc.length = length; - table_desc.flags = ACPI_TABLE_ORIGIN_ALLOCATED; - - /* Install the new table into the local data structures */ - - status = acpi_tb_add_table(&table_desc, &table_index); - if (ACPI_FAILURE(status)) { - goto cleanup; - } - - /* - * Add the table to the namespace. - * - * Note: Load the table objects relative to the root of the namespace. - * This appears to go against the ACPI specification, but we do it for - * compatibility with other ACPI implementations. - */ - status = - acpi_ex_add_table(table_index, acpi_gbl_root_node, &ddb_handle); - if (ACPI_FAILURE(status)) { - - /* On error, table_ptr was deallocated above */ - - return_ACPI_STATUS(status); - } - - /* Store the ddb_handle into the Target operand */ - - status = acpi_ex_store(ddb_handle, target, walk_state); - if (ACPI_FAILURE(status)) { - (void)acpi_ex_unload_table(ddb_handle); - - /* table_ptr was deallocated above */ - - acpi_ut_remove_reference(ddb_handle); - return_ACPI_STATUS(status); - } - - /* Invoke table handler if present */ - - if (acpi_gbl_table_handler) { - (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, - table_desc.pointer, - acpi_gbl_table_handler_context); - } - - cleanup: - if (ACPI_FAILURE(status)) { - - /* Delete allocated table buffer */ - - acpi_tb_delete_table(&table_desc); - } - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_unload_table - * - * PARAMETERS: ddb_handle - Handle to a previously loaded table - * - * RETURN: Status - * - * DESCRIPTION: Unload an ACPI table - * - ******************************************************************************/ - -acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle) -{ - acpi_status status = AE_OK; - union acpi_operand_object *table_desc = ddb_handle; - u32 table_index; - struct acpi_table_header *table; - - ACPI_FUNCTION_TRACE(ex_unload_table); - - /* - * Validate the handle - * Although the handle is partially validated in acpi_ex_reconfiguration(), - * when it calls acpi_ex_resolve_operands(), the handle is more completely - * validated here. - */ - if ((!ddb_handle) || - (ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) || - (ACPI_GET_OBJECT_TYPE(ddb_handle) != ACPI_TYPE_LOCAL_REFERENCE)) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* Get the table index from the ddb_handle */ - - table_index = table_desc->reference.value; - - /* Invoke table handler if present */ - - if (acpi_gbl_table_handler) { - status = acpi_get_table_by_index(table_index, &table); - if (ACPI_SUCCESS(status)) { - (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD, - table, - acpi_gbl_table_handler_context); - } - } - - /* - * Delete the entire namespace under this table Node - * (Offset contains the table_id) - */ - acpi_tb_delete_namespace_by_owner(table_index); - (void)acpi_tb_release_owner_id(table_index); - - acpi_tb_set_table_loaded_flag(table_index, FALSE); - - /* Table unloaded, remove a reference to the ddb_handle object */ - - acpi_ut_remove_reference(ddb_handle); - return_ACPI_STATUS(AE_OK); -} |
