******************************************************************************/
acpi_status
-acpi_tb_add_table(struct acpi_table_desc *table_desc,
- acpi_native_uint * table_index)
+acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index)
{
- acpi_native_uint i;
- acpi_native_uint length;
+ u32 i;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(tb_add_table);
}
}
- length = ACPI_MIN(table_desc->length,
- acpi_gbl_root_table_list.tables[i].length);
+ /*
+ * Check for a table match on the entire table length,
+ * not just the header.
+ */
+ if (table_desc->length !=
+ acpi_gbl_root_table_list.tables[i].length) {
+ continue;
+ }
+
if (ACPI_MEMCMP(table_desc->pointer,
acpi_gbl_root_table_list.tables[i].pointer,
- length)) {
+ acpi_gbl_root_table_list.tables[i].length)) {
continue;
}
- /* Table is already registered */
-
+ /*
+ * 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.
+ */
+
+ /*
+ * Table is already registered.
+ * We can delete the table that was passed as a parameter.
+ */
acpi_tb_delete_table(table_desc);
*table_index = i;
- status = AE_ALREADY_EXISTS;
- goto release;
+
+ if (acpi_gbl_root_table_list.tables[i].
+ flags & ACPI_TABLE_IS_LOADED) {
+
+ /* Table is still loaded, this is an error */
+
+ status = AE_ALREADY_EXISTS;
+ goto release;
+ } else {
+ /* Table was unloaded, allow it to be reloaded */
+
+ table_desc->pointer =
+ acpi_gbl_root_table_list.tables[i].pointer;
+ table_desc->address =
+ acpi_gbl_root_table_list.tables[i].address;
+ status = AE_OK;
+ goto print_header;
+ }
}
- /*
- * Add the table to the global table list
- */
+ /* Add the table to the global root table list */
+
status = acpi_tb_store_table(table_desc->address, table_desc->pointer,
table_desc->length, table_desc->flags,
table_index);
goto release;
}
+ print_header:
acpi_tb_print_table_header(table_desc->address, table_desc->pointer);
release:
/* Increase the Table Array size */
- tables = ACPI_ALLOCATE_ZEROED((acpi_gbl_root_table_list.size +
- ACPI_ROOT_TABLE_SIZE_INCREMENT)
+ tables = ACPI_ALLOCATE_ZEROED(((acpi_size) acpi_gbl_root_table_list.
+ size + ACPI_ROOT_TABLE_SIZE_INCREMENT)
* sizeof(struct acpi_table_desc));
if (!tables) {
ACPI_ERROR((AE_INFO,
if (acpi_gbl_root_table_list.tables) {
ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables,
- acpi_gbl_root_table_list.size *
+ (acpi_size) acpi_gbl_root_table_list.size *
sizeof(struct acpi_table_desc));
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
acpi_status
acpi_tb_store_table(acpi_physical_address address,
struct acpi_table_header *table,
- u32 length, u8 flags, acpi_native_uint * table_index)
+ u32 length, u8 flags, u32 *table_index)
{
acpi_status status = AE_OK;
void acpi_tb_terminate(void)
{
- acpi_native_uint i;
+ u32 i;
ACPI_FUNCTION_TRACE(tb_terminate);
*
******************************************************************************/
-void acpi_tb_delete_namespace_by_owner(acpi_native_uint table_index)
+void acpi_tb_delete_namespace_by_owner(u32 table_index)
{
acpi_owner_id owner_id;
*
******************************************************************************/
-acpi_status acpi_tb_allocate_owner_id(acpi_native_uint table_index)
+acpi_status acpi_tb_allocate_owner_id(u32 table_index)
{
acpi_status status = AE_BAD_PARAMETER;
*
******************************************************************************/
-acpi_status acpi_tb_release_owner_id(acpi_native_uint table_index)
+acpi_status acpi_tb_release_owner_id(u32 table_index)
{
acpi_status status = AE_BAD_PARAMETER;
*
******************************************************************************/
-acpi_status
-acpi_tb_get_owner_id(acpi_native_uint table_index, acpi_owner_id * owner_id)
+acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id *owner_id)
{
acpi_status status = AE_BAD_PARAMETER;
*
******************************************************************************/
-u8 acpi_tb_is_table_loaded(acpi_native_uint table_index)
+u8 acpi_tb_is_table_loaded(u32 table_index)
{
u8 is_loaded = FALSE;
*
******************************************************************************/
-void acpi_tb_set_table_loaded_flag(acpi_native_uint table_index, u8 is_loaded)
+void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded)
{
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);