diff options
Diffstat (limited to 'drivers/acpi/tables/tbinstal.c')
| -rw-r--r-- | drivers/acpi/tables/tbinstal.c | 538 |
1 files changed, 0 insertions, 538 deletions
diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/tables/tbinstal.c deleted file mode 100644 index 10db8484e46..00000000000 --- a/drivers/acpi/tables/tbinstal.c +++ /dev/null @@ -1,538 +0,0 @@ -/****************************************************************************** - * - * Module Name: tbinstal - ACPI table installation and removal - * - *****************************************************************************/ - -/* - * Copyright (C) 2000 - 2005, R. Byron Moore - * 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/actables.h> - -#define _COMPONENT ACPI_TABLES -ACPI_MODULE_NAME("tbinstal") - -/* Local prototypes */ -static acpi_status -acpi_tb_match_signature(char *signature, - struct acpi_table_desc *table_info, u8 search_type); - -/******************************************************************************* - * - * FUNCTION: acpi_tb_match_signature - * - * PARAMETERS: Signature - Table signature to match - * table_info - Return data - * search_type - Table type to match (primary/secondary) - * - * RETURN: Status - * - * DESCRIPTION: Compare signature against the list of "ACPI-subsystem-owned" - * tables (DSDT/FADT/SSDT, etc.) Returns the table_type_iD on match. - * - ******************************************************************************/ - -static acpi_status -acpi_tb_match_signature(char *signature, - struct acpi_table_desc *table_info, u8 search_type) -{ - acpi_native_uint i; - - ACPI_FUNCTION_TRACE("tb_match_signature"); - - /* Search for a signature match among the known table types */ - - for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) { - if (!(acpi_gbl_table_data[i].flags & search_type)) { - continue; - } - - if (!ACPI_STRNCMP(signature, acpi_gbl_table_data[i].signature, - acpi_gbl_table_data[i].sig_length)) { - /* Found a signature match, return index if requested */ - - if (table_info) { - table_info->type = (u8) i; - } - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Table [%4.4s] is an ACPI table consumed by the core subsystem\n", - (char *)acpi_gbl_table_data[i]. - signature)); - - return_ACPI_STATUS(AE_OK); - } - } - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Table [%4.4s] is not an ACPI table consumed by the core subsystem - ignored\n", - (char *)signature)); - - return_ACPI_STATUS(AE_TABLE_NOT_SUPPORTED); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_install_table - * - * PARAMETERS: table_info - Return value from acpi_tb_get_table_body - * - * RETURN: Status - * - * DESCRIPTION: Install the table into the global data structures. - * - ******************************************************************************/ - -acpi_status acpi_tb_install_table(struct acpi_table_desc *table_info) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE("tb_install_table"); - - /* Lock tables while installing */ - - status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); - if (ACPI_FAILURE(status)) { - ACPI_REPORT_ERROR(("Could not acquire table mutex, %s\n", - acpi_format_exception(status))); - return_ACPI_STATUS(status); - } - - /* - * Ignore a table that is already installed. For example, some BIOS - * ASL code will repeatedly attempt to load the same SSDT. - */ - status = acpi_tb_is_table_installed(table_info); - if (ACPI_FAILURE(status)) { - goto unlock_and_exit; - } - - /* Install the table into the global data structure */ - - status = acpi_tb_init_table_descriptor(table_info->type, table_info); - if (ACPI_FAILURE(status)) { - ACPI_REPORT_ERROR(("Could not install table [%4.4s], %s\n", - table_info->pointer->signature, - acpi_format_exception(status))); - } - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s located at %p\n", - acpi_gbl_table_data[table_info->type].name, - table_info->pointer)); - - unlock_and_exit: - (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_recognize_table - * - * PARAMETERS: table_info - Return value from acpi_tb_get_table_body - * search_type - Table type to match (primary/secondary) - * - * RETURN: Status - * - * DESCRIPTION: Check a table signature for a match against known table types - * - * NOTE: All table pointers are validated as follows: - * 1) Table pointer must point to valid physical memory - * 2) Signature must be 4 ASCII chars, even if we don't recognize the - * name - * 3) Table must be readable for length specified in the header - * 4) Table checksum must be valid (with the exception of the FACS - * which has no checksum for some odd reason) - * - ******************************************************************************/ - -acpi_status -acpi_tb_recognize_table(struct acpi_table_desc *table_info, u8 search_type) -{ - struct acpi_table_header *table_header; - acpi_status status; - - ACPI_FUNCTION_TRACE("tb_recognize_table"); - - /* Ensure that we have a valid table pointer */ - - table_header = (struct acpi_table_header *)table_info->pointer; - if (!table_header) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* - * We only "recognize" a limited number of ACPI tables -- namely, the - * ones that are used by the subsystem (DSDT, FADT, etc.) - * - * An AE_TABLE_NOT_SUPPORTED means that the table was not recognized. - * This can be any one of many valid ACPI tables, it just isn't one of - * the tables that is consumed by the core subsystem - */ - status = acpi_tb_match_signature(table_header->signature, - table_info, search_type); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - status = acpi_tb_validate_table_header(table_header); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Return the table type and length via the info struct */ - - table_info->length = (acpi_size) table_header->length; - - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_init_table_descriptor - * - * PARAMETERS: table_type - The type of the table - * table_info - A table info struct - * - * RETURN: None. - * - * DESCRIPTION: Install a table into the global data structs. - * - ******************************************************************************/ - -acpi_status -acpi_tb_init_table_descriptor(acpi_table_type table_type, - struct acpi_table_desc *table_info) -{ - struct acpi_table_list *list_head; - struct acpi_table_desc *table_desc; - acpi_status status; - - ACPI_FUNCTION_TRACE_U32("tb_init_table_descriptor", table_type); - - /* Allocate a descriptor for this table */ - - table_desc = ACPI_MEM_CALLOCATE(sizeof(struct acpi_table_desc)); - if (!table_desc) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* Get a new owner ID for the table */ - - status = acpi_ut_allocate_owner_id(&table_desc->owner_id); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Install the table into the global data structure */ - - list_head = &acpi_gbl_table_lists[table_type]; - - /* - * Two major types of tables: 1) Only one instance is allowed. This - * includes most ACPI tables such as the DSDT. 2) Multiple instances of - * the table are allowed. This includes SSDT and PSDTs. - */ - if (ACPI_IS_SINGLE_TABLE(acpi_gbl_table_data[table_type].flags)) { - /* - * Only one table allowed, and a table has alread been installed - * at this location, so return an error. - */ - if (list_head->next) { - ACPI_MEM_FREE(table_desc); - return_ACPI_STATUS(AE_ALREADY_EXISTS); - } - - table_desc->next = list_head->next; - list_head->next = table_desc; - - if (table_desc->next) { - table_desc->next->prev = table_desc; - } - - list_head->count++; - } else { - /* - * Link the new table in to the list of tables of this type. - * Insert at the end of the list, order IS IMPORTANT. - * - * table_desc->Prev & Next are already NULL from calloc() - */ - list_head->count++; - - if (!list_head->next) { - list_head->next = table_desc; - } else { - table_desc->next = list_head->next; - - while (table_desc->next->next) { - table_desc->next = table_desc->next->next; - } - - table_desc->next->next = table_desc; - table_desc->prev = table_desc->next; - table_desc->next = NULL; - } - } - - /* Finish initialization of the table descriptor */ - - table_desc->type = (u8) table_type; - table_desc->pointer = table_info->pointer; - table_desc->length = table_info->length; - table_desc->allocation = table_info->allocation; - table_desc->aml_start = (u8 *) (table_desc->pointer + 1), - table_desc->aml_length = (u32) (table_desc->length - - (u32) sizeof(struct - acpi_table_header)); - table_desc->loaded_into_namespace = FALSE; - - /* - * Set the appropriate global pointer (if there is one) to point to the - * newly installed table - */ - if (acpi_gbl_table_data[table_type].global_ptr) { - *(acpi_gbl_table_data[table_type].global_ptr) = - table_info->pointer; - } - - /* Return Data */ - - table_info->owner_id = table_desc->owner_id; - table_info->installed_desc = table_desc; - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_delete_all_tables - * - * PARAMETERS: None. - * - * RETURN: None. - * - * DESCRIPTION: Delete all internal ACPI tables - * - ******************************************************************************/ - -void acpi_tb_delete_all_tables(void) -{ - acpi_table_type type; - - /* - * Free memory allocated for ACPI tables - * Memory can either be mapped or allocated - */ - for (type = 0; type < NUM_ACPI_TABLE_TYPES; type++) { - acpi_tb_delete_tables_by_type(type); - } -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_delete_tables_by_type - * - * PARAMETERS: Type - The table type to be deleted - * - * RETURN: None. - * - * DESCRIPTION: Delete an internal ACPI table - * Locks the ACPI table mutex - * - ******************************************************************************/ - -void acpi_tb_delete_tables_by_type(acpi_table_type type) -{ - struct acpi_table_desc *table_desc; - u32 count; - u32 i; - - ACPI_FUNCTION_TRACE_U32("tb_delete_tables_by_type", type); - - if (type > ACPI_TABLE_MAX) { - return_VOID; - } - - if (ACPI_FAILURE(acpi_ut_acquire_mutex(ACPI_MTX_TABLES))) { - return; - } - - /* Clear the appropriate "typed" global table pointer */ - - switch (type) { - case ACPI_TABLE_RSDP: - acpi_gbl_RSDP = NULL; - break; - - case ACPI_TABLE_DSDT: - acpi_gbl_DSDT = NULL; - break; - - case ACPI_TABLE_FADT: - acpi_gbl_FADT = NULL; - break; - - case ACPI_TABLE_FACS: - acpi_gbl_FACS = NULL; - break; - - case ACPI_TABLE_XSDT: - acpi_gbl_XSDT = NULL; - break; - - case ACPI_TABLE_SSDT: - case ACPI_TABLE_PSDT: - default: - break; - } - - /* - * Free the table - * 1) Get the head of the list - */ - table_desc = acpi_gbl_table_lists[type].next; - count = acpi_gbl_table_lists[type].count; - - /* - * 2) Walk the entire list, deleting both the allocated tables - * and the table descriptors - */ - for (i = 0; i < count; i++) { - table_desc = acpi_tb_uninstall_table(table_desc); - } - - (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); - return_VOID; -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_delete_single_table - * - * PARAMETERS: table_info - A table info struct - * - * RETURN: None. - * - * DESCRIPTION: Low-level free for a single ACPI table. Handles cases where - * the table was allocated a buffer or was mapped. - * - ******************************************************************************/ - -void acpi_tb_delete_single_table(struct acpi_table_desc *table_desc) -{ - - /* Must have a valid table descriptor and pointer */ - - if ((!table_desc) || (!table_desc->pointer)) { - return; - } - - /* Valid table, determine type of memory allocation */ - - switch (table_desc->allocation) { - case ACPI_MEM_NOT_ALLOCATED: - break; - - case ACPI_MEM_ALLOCATED: - - ACPI_MEM_FREE(table_desc->pointer); - break; - - case ACPI_MEM_MAPPED: - - acpi_os_unmap_memory(table_desc->pointer, table_desc->length); - break; - - default: - break; - } -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_uninstall_table - * - * PARAMETERS: table_info - A table info struct - * - * RETURN: Pointer to the next table in the list (of same type) - * - * DESCRIPTION: Free the memory associated with an internal ACPI table that - * is either installed or has never been installed. - * Table mutex should be locked. - * - ******************************************************************************/ - -struct acpi_table_desc *acpi_tb_uninstall_table(struct acpi_table_desc - *table_desc) -{ - struct acpi_table_desc *next_desc; - - ACPI_FUNCTION_TRACE_PTR("tb_uninstall_table", table_desc); - - if (!table_desc) { - return_PTR(NULL); - } - - /* Unlink the descriptor from the doubly linked list */ - - if (table_desc->prev) { - table_desc->prev->next = table_desc->next; - } else { - /* Is first on list, update list head */ - - acpi_gbl_table_lists[table_desc->type].next = table_desc->next; - } - - if (table_desc->next) { - table_desc->next->prev = table_desc->prev; - } - - /* Free the memory allocated for the table itself */ - - acpi_tb_delete_single_table(table_desc); - - /* Free the table descriptor */ - - next_desc = table_desc->next; - ACPI_MEM_FREE(table_desc); - - /* Return pointer to the next descriptor */ - - return_PTR(next_desc); -} |