*****************************************************************************/
/*
- * Copyright (C) 2000 - 2006, R. Byron Moore
+ * Copyright (C) 2000 - 2007, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*/
#include <acpi/acpi.h>
+#include <acpi/acnamesp.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
+ * FUNCTION: acpi_tb_verify_table
*
- * PARAMETERS: Signature - Table signature to match
- * table_info - Return data
- * search_type - Table type to match (primary/secondary)
+ * PARAMETERS: table_desc - table
*
* RETURN: Status
*
- * DESCRIPTION: Compare signature against the list of "ACPI-subsystem-owned"
- * tables (DSDT/FADT/SSDT, etc.) Returns the table_type_iD on match.
+ * DESCRIPTION: this function is called to verify and map table
*
- ******************************************************************************/
-
-static acpi_status
-acpi_tb_match_signature(char *signature,
- struct acpi_table_desc *table_info, u8 search_type)
+ *****************************************************************************/
+acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc)
{
- acpi_native_uint i;
+ acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE(tb_match_signature);
+ ACPI_FUNCTION_TRACE(tb_verify_table);
- /* Search for a signature match among the known table types */
+ /* Map the table if necessary */
- for (i = 0; i < (ACPI_TABLE_ID_MAX + 1); i++) {
- if (!(acpi_gbl_table_data[i].flags & search_type)) {
- continue;
+ if (!table_desc->pointer) {
+ if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) ==
+ ACPI_TABLE_ORIGIN_MAPPED) {
+ table_desc->pointer =
+ acpi_os_map_memory(table_desc->address,
+ table_desc->length);
}
+ if (!table_desc->pointer) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+ }
- 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 */
+ /* FACS is the odd table, has no standard ACPI header and no checksum */
- if (table_info) {
- table_info->type = (u8) i;
- }
+ if (!ACPI_COMPARE_NAME(&table_desc->signature, ACPI_SIG_FACS)) {
- 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));
+ /* Always calculate checksum, ignore bad checksum if requested */
- return_ACPI_STATUS(AE_OK);
- }
+ status =
+ acpi_tb_verify_checksum(table_desc->pointer,
+ table_desc->length);
}
- 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);
+ return_ACPI_STATUS(status);
}
/*******************************************************************************
*
- * FUNCTION: acpi_tb_install_table
+ * FUNCTION: acpi_tb_add_table
*
- * PARAMETERS: table_info - Return value from acpi_tb_get_table_body
+ * PARAMETERS: table_desc - Table descriptor
+ * table_index - Where the table index is returned
*
* RETURN: Status
*
- * DESCRIPTION: Install the table into the global data structures.
+ * DESCRIPTION: This function is called to add the ACPI table
*
******************************************************************************/
-acpi_status acpi_tb_install_table(struct acpi_table_desc *table_info)
+acpi_status
+acpi_tb_add_table(struct acpi_table_desc *table_desc,
+ acpi_native_uint * table_index)
{
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(tb_install_table);
+ acpi_native_uint i;
+ acpi_native_uint length;
+ acpi_status status = AE_OK;
- /* Lock tables while installing */
+ ACPI_FUNCTION_TRACE(tb_add_table);
- status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Could not acquire table mutex"));
- return_ACPI_STATUS(status);
+ if (!table_desc->pointer) {
+ status = acpi_tb_verify_table(table_desc);
+ if (ACPI_FAILURE(status) || !table_desc->pointer) {
+ 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;
+ /* The table must be either an SSDT or a PSDT */
+
+ if ((!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_PSDT))
+ &&
+ (!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT)))
+ {
+ ACPI_ERROR((AE_INFO,
+ "Table has invalid signature [%4.4s], must be SSDT or PSDT",
+ table_desc->pointer->signature));
+ return_ACPI_STATUS(AE_BAD_SIGNATURE);
}
- /* Install the table into the global data structure */
+ (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+
+ /* Check if table is already registered */
+
+ for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
+ if (!acpi_gbl_root_table_list.tables[i].pointer) {
+ status =
+ acpi_tb_verify_table(&acpi_gbl_root_table_list.
+ tables[i]);
+ if (ACPI_FAILURE(status)
+ || !acpi_gbl_root_table_list.tables[i].pointer) {
+ continue;
+ }
+ }
+
+ length = ACPI_MIN(table_desc->length,
+ acpi_gbl_root_table_list.tables[i].length);
+ if (ACPI_MEMCMP(table_desc->pointer,
+ acpi_gbl_root_table_list.tables[i].pointer,
+ length)) {
+ continue;
+ }
+
+ /* Table is already registered */
+
+ acpi_tb_delete_table(table_desc);
+ *table_index = i;
+ goto release;
+ }
- status = acpi_tb_init_table_descriptor(table_info->type, table_info);
+ /*
+ * Add the table to the global table list
+ */
+ status = acpi_tb_store_table(table_desc->address, table_desc->pointer,
+ table_desc->length, table_desc->flags,
+ table_index);
if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Could not install table [%4.4s]",
- table_info->pointer->signature));
+ goto release;
}
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s located at %p\n",
- acpi_gbl_table_data[table_info->type].name,
- table_info->pointer));
+ acpi_tb_print_table_header(table_desc->address, table_desc->pointer);
- unlock_and_exit:
+ release:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
- * FUNCTION: acpi_tb_recognize_table
+ * FUNCTION: acpi_tb_resize_root_table_list
*
- * PARAMETERS: table_info - Return value from acpi_tb_get_table_body
- * search_type - Table type to match (primary/secondary)
+ * PARAMETERS: None
*
* 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)
+ * DESCRIPTION: Expand the size of global table array
*
******************************************************************************/
-acpi_status
-acpi_tb_recognize_table(struct acpi_table_desc *table_info, u8 search_type)
+acpi_status acpi_tb_resize_root_table_list(void)
{
- struct acpi_table_header *table_header;
- acpi_status status;
+ struct acpi_table_desc *tables;
- ACPI_FUNCTION_TRACE(tb_recognize_table);
+ ACPI_FUNCTION_TRACE(tb_resize_root_table_list);
- /* Ensure that we have a valid table pointer */
+ /* allow_resize flag is a parameter to acpi_initialize_tables */
- table_header = (struct acpi_table_header *)table_info->pointer;
- if (!table_header) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ 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);
}
- /*
- * 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);
+ /* Increase the Table Array size */
+
+ tables = ACPI_ALLOCATE_ZEROED((acpi_gbl_root_table_list.size +
+ 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);
}
- status = acpi_tb_validate_table_header(table_header);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ /* Copy and free the previous table array */
+
+ if (acpi_gbl_root_table_list.tables) {
+ ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables,
+ acpi_gbl_root_table_list.size *
+ sizeof(struct acpi_table_desc));
+
+ if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
+ ACPI_FREE(acpi_gbl_root_table_list.tables);
+ }
}
- /* Return the table type and length via the info struct */
+ acpi_gbl_root_table_list.tables = tables;
+ acpi_gbl_root_table_list.size += ACPI_ROOT_TABLE_SIZE_INCREMENT;
+ acpi_gbl_root_table_list.flags |= (u8) ACPI_ROOT_ORIGIN_ALLOCATED;
- table_info->length = (acpi_size) table_header->length;
- return_ACPI_STATUS(status);
+ return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_tb_init_table_descriptor
+ * FUNCTION: acpi_tb_store_table
*
- * PARAMETERS: table_type - The type of the table
- * table_info - A table info struct
+ * PARAMETERS: Address - Table address
+ * Table - Table header
+ * Length - Table length
+ * Flags - flags
*
- * RETURN: None.
+ * RETURN: Status and table index.
*
- * DESCRIPTION: Install a table into the global data structs.
+ * DESCRIPTION: Add an ACPI table to the global table list
*
******************************************************************************/
acpi_status
-acpi_tb_init_table_descriptor(acpi_table_type table_type,
- struct acpi_table_desc *table_info)
+acpi_tb_store_table(acpi_physical_address address,
+ struct acpi_table_header *table,
+ u32 length, u8 flags, acpi_native_uint * table_index)
{
- 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);
+ acpi_status status = AE_OK;
- /* Allocate a descriptor for this table */
+ /* Ensure that there is room for the table in the Root Table List */
- table_desc = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_table_desc));
- if (!table_desc) {
- return_ACPI_STATUS(AE_NO_MEMORY);
+ if (acpi_gbl_root_table_list.count >= acpi_gbl_root_table_list.size) {
+ status = acpi_tb_resize_root_table_list();
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
}
- /* Get a new owner ID for the table */
+ /* Initialize added table */
+
+ acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
+ address = address;
+ acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
+ pointer = table;
+ acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].length =
+ length;
+ acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
+ owner_id = 0;
+ acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].flags =
+ flags;
+
+ ACPI_MOVE_32_TO_32(&
+ (acpi_gbl_root_table_list.
+ tables[acpi_gbl_root_table_list.count].signature),
+ table->signature);
+
+ *table_index = acpi_gbl_root_table_list.count;
+ acpi_gbl_root_table_list.count++;
+ return (status);
+}
- status = acpi_ut_allocate_owner_id(&table_desc->owner_id);
- if (ACPI_FAILURE(status)) {
- goto error_exit1;
- }
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_delete_table
+ *
+ * PARAMETERS: table_index - Table index
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Delete one internal ACPI table
+ *
+ ******************************************************************************/
- /* Install the table into the global data structure */
+void acpi_tb_delete_table(struct acpi_table_desc *table_desc)
+{
+ /* Table must be mapped or allocated */
+ if (!table_desc->pointer) {
+ return;
+ }
+ switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
+ case ACPI_TABLE_ORIGIN_MAPPED:
+ acpi_os_unmap_memory(table_desc->pointer, table_desc->length);
+ break;
+ case ACPI_TABLE_ORIGIN_ALLOCATED:
+ ACPI_FREE(table_desc->pointer);
+ break;
+ default:;
+ }
- list_head = &acpi_gbl_table_lists[table_type];
+ table_desc->pointer = NULL;
+}
- /*
- * 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) {
- status = AE_ALREADY_EXISTS;
- goto error_exit2;
- }
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_terminate
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Delete all internal ACPI tables
+ *
+ ******************************************************************************/
- table_desc->next = list_head->next;
- list_head->next = table_desc;
+void acpi_tb_terminate(void)
+{
+ acpi_native_uint i;
- if (table_desc->next) {
- table_desc->next->prev = table_desc;
- }
+ ACPI_FUNCTION_TRACE(tb_terminate);
- 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;
+ (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
- while (table_desc->next->next) {
- table_desc->next = table_desc->next->next;
- }
+ /* Delete the individual tables */
- table_desc->next->next = table_desc;
- table_desc->prev = table_desc->next;
- table_desc->next = NULL;
- }
+ for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
+ acpi_tb_delete_table(&acpi_gbl_root_table_list.tables[i]);
}
- /* Finish initialization of the table descriptor */
-
- table_desc->loaded_into_namespace = FALSE;
- 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));
-
/*
- * Set the appropriate global pointer (if there is one) to point to the
- * newly installed table
+ * 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_table_data[table_type].global_ptr) {
- *(acpi_gbl_table_data[table_type].global_ptr) =
- table_info->pointer;
+ if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
+ ACPI_FREE(acpi_gbl_root_table_list.tables);
}
- /* Return Data */
-
- table_info->owner_id = table_desc->owner_id;
- table_info->installed_desc = table_desc;
- return_ACPI_STATUS(AE_OK);
-
- /* Error exit with cleanup */
-
- error_exit2:
-
- acpi_ut_release_owner_id(&table_desc->owner_id);
+ acpi_gbl_root_table_list.tables = NULL;
+ acpi_gbl_root_table_list.flags = 0;
+ acpi_gbl_root_table_list.count = 0;
- error_exit1:
-
- ACPI_FREE(table_desc);
- return_ACPI_STATUS(status);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n"));
+ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
}
/*******************************************************************************
*
- * FUNCTION: acpi_tb_delete_all_tables
+ * FUNCTION: acpi_tb_delete_namespace_by_owner
*
- * PARAMETERS: None.
+ * PARAMETERS: table_index - Table index
*
- * RETURN: None.
+ * RETURN: None
*
- * DESCRIPTION: Delete all internal ACPI tables
+ * DESCRIPTION: Delete all namespace objects created when this table was loaded.
*
******************************************************************************/
-void acpi_tb_delete_all_tables(void)
+void acpi_tb_delete_namespace_by_owner(acpi_native_uint table_index)
{
- acpi_table_type type;
+ acpi_owner_id owner_id;
- /*
- * Free memory allocated for ACPI tables
- * Memory can either be mapped or allocated
- */
- for (type = 0; type < (ACPI_TABLE_ID_MAX + 1); type++) {
- acpi_tb_delete_tables_by_type(type);
+ (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+ if (table_index < acpi_gbl_root_table_list.count) {
+ owner_id =
+ acpi_gbl_root_table_list.tables[table_index].owner_id;
+ } else {
+ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+ return;
}
+
+ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+ acpi_ns_delete_namespace_by_owner(owner_id);
}
/*******************************************************************************
*
- * FUNCTION: acpi_tb_delete_tables_by_type
+ * FUNCTION: acpi_tb_allocate_owner_id
*
- * PARAMETERS: Type - The table type to be deleted
+ * PARAMETERS: table_index - Table index
*
- * RETURN: None.
+ * RETURN: Status
*
- * DESCRIPTION: Delete an internal ACPI table
- * Locks the ACPI table mutex
+ * DESCRIPTION: Allocates owner_id in table_desc
*
******************************************************************************/
-void acpi_tb_delete_tables_by_type(acpi_table_type type)
+acpi_status acpi_tb_allocate_owner_id(acpi_native_uint table_index)
{
- struct acpi_table_desc *table_desc;
- u32 count;
- u32 i;
+ acpi_status status = AE_BAD_PARAMETER;
- ACPI_FUNCTION_TRACE_U32(tb_delete_tables_by_type, type);
+ ACPI_FUNCTION_TRACE(tb_allocate_owner_id);
- if (type > ACPI_TABLE_ID_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_ID_RSDP:
- acpi_gbl_RSDP = NULL;
- break;
-
- case ACPI_TABLE_ID_DSDT:
- acpi_gbl_DSDT = NULL;
- break;
-
- case ACPI_TABLE_ID_FADT:
- acpi_gbl_FADT = NULL;
- break;
-
- case ACPI_TABLE_ID_FACS:
- acpi_gbl_FACS = NULL;
- break;
-
- case ACPI_TABLE_ID_XSDT:
- acpi_gbl_XSDT = NULL;
- break;
-
- case ACPI_TABLE_ID_SSDT:
- case ACPI_TABLE_ID_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_acquire_mutex(ACPI_MTX_TABLES);
+ if (table_index < acpi_gbl_root_table_list.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_VOID;
+ return_ACPI_STATUS(status);
}
/*******************************************************************************
*
- * FUNCTION: acpi_tb_delete_single_table
+ * FUNCTION: acpi_tb_release_owner_id
*
- * PARAMETERS: table_info - A table info struct
+ * PARAMETERS: table_index - Table index
*
- * RETURN: None.
+ * RETURN: Status
*
- * DESCRIPTION: Low-level free for a single ACPI table. Handles cases where
- * the table was allocated a buffer or was mapped.
+ * DESCRIPTION: Releases owner_id in table_desc
*
******************************************************************************/
-void acpi_tb_delete_single_table(struct acpi_table_desc *table_desc)
+acpi_status acpi_tb_release_owner_id(acpi_native_uint table_index)
{
+ acpi_status status = AE_BAD_PARAMETER;
- /* Must have a valid table descriptor and pointer */
+ ACPI_FUNCTION_TRACE(tb_release_owner_id);
- if ((!table_desc) || (!table_desc->pointer)) {
- return;
+ (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+ if (table_index < acpi_gbl_root_table_list.count) {
+ acpi_ut_release_owner_id(&
+ (acpi_gbl_root_table_list.
+ tables[table_index].owner_id));
+ status = AE_OK;
}
- /* Valid table, determine type of memory allocation */
-
- switch (table_desc->allocation) {
- case ACPI_MEM_NOT_ALLOCATED:
- break;
-
- case ACPI_MEM_ALLOCATED:
-
- ACPI_FREE(table_desc->pointer);
- break;
-
- case ACPI_MEM_MAPPED:
-
- acpi_os_unmap_memory(table_desc->pointer, table_desc->length);
- break;
-
- default:
- break;
- }
+ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+ return_ACPI_STATUS(status);
}
/*******************************************************************************
*
- * FUNCTION: acpi_tb_uninstall_table
+ * FUNCTION: acpi_tb_get_owner_id
*
- * PARAMETERS: table_info - A table info struct
+ * PARAMETERS: table_index - Table index
+ * owner_id - Where the table owner_id is returned
*
- * RETURN: Pointer to the next table in the list (of same type)
+ * RETURN: Status
*
- * DESCRIPTION: Free the memory associated with an internal ACPI table that
- * is either installed or has never been installed.
- * Table mutex should be locked.
+ * DESCRIPTION: returns owner_id for the ACPI table
*
******************************************************************************/
-struct acpi_table_desc *acpi_tb_uninstall_table(struct acpi_table_desc
- *table_desc)
+acpi_status
+acpi_tb_get_owner_id(acpi_native_uint table_index, acpi_owner_id * owner_id)
{
- struct acpi_table_desc *next_desc;
+ acpi_status status = AE_BAD_PARAMETER;
- ACPI_FUNCTION_TRACE_PTR(tb_uninstall_table, table_desc);
+ ACPI_FUNCTION_TRACE(tb_get_owner_id);
- if (!table_desc) {
- return_PTR(NULL);
+ (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+ if (table_index < acpi_gbl_root_table_list.count) {
+ *owner_id =
+ acpi_gbl_root_table_list.tables[table_index].owner_id;
+ status = AE_OK;
}
- /* Unlink the descriptor from the doubly linked list */
+ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+ return_ACPI_STATUS(status);
+}
- if (table_desc->prev) {
- table_desc->prev->next = table_desc->next;
- } else {
- /* Is first on list, update list head */
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_is_table_loaded
+ *
+ * PARAMETERS: table_index - Table index
+ *
+ * RETURN: Table Loaded Flag
+ *
+ ******************************************************************************/
- acpi_gbl_table_lists[table_desc->type].next = table_desc->next;
- }
+u8 acpi_tb_is_table_loaded(acpi_native_uint table_index)
+{
+ u8 is_loaded = FALSE;
- if (table_desc->next) {
- table_desc->next->prev = table_desc->prev;
+ (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+ if (table_index < acpi_gbl_root_table_list.count) {
+ is_loaded = (u8)
+ (acpi_gbl_root_table_list.tables[table_index].
+ flags & ACPI_TABLE_IS_LOADED);
}
- /* Free the memory allocated for the table itself */
-
- acpi_tb_delete_single_table(table_desc);
-
- /* Free the owner ID associated with this table */
-
- acpi_ut_release_owner_id(&table_desc->owner_id);
+ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+ return (is_loaded);
+}
- /* Free the table descriptor */
+/*******************************************************************************
+ *
+ * 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.
+ *
+ ******************************************************************************/
- next_desc = table_desc->next;
- ACPI_FREE(table_desc);
+void acpi_tb_set_table_loaded_flag(acpi_native_uint table_index, u8 is_loaded)
+{
- /* Return pointer to the next descriptor */
+ (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+ if (table_index < acpi_gbl_root_table_list.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;
+ }
+ }
- return_PTR(next_desc);
+ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
}
git.openpandora.org / pandora-kernel.git / blobdiff