/*******************************************************************************
*
* FUNCTION: acpi_load_table
*
* PARAMETERS: table - Pointer to a buffer containing the ACPI
* table to be loaded.
*
* RETURN: Status
*
* DESCRIPTION: Dynamically load an ACPI table from the caller's buffer. Must
* be a valid ACPI table with a valid ACPI table header.
* Note1: Mainly intended to support hotplug addition of SSDTs.
* Note2: Does not copy the incoming table. User is responsible
* to ensure that the table is not deleted or unmapped.
*
******************************************************************************/
acpi_status acpi_load_table(struct acpi_table_header *table)
{
acpi_status status;
u32 table_index;
ACPI_FUNCTION_TRACE(acpi_load_table);
/* Parameter validation */
if (!table) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Must acquire the interpreter lock during this operation */
status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Install the table and load it into the namespace */
ACPI_INFO((AE_INFO, "Host-directed Dynamic ACPI Table Load:"));
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
status = acpi_tb_install_standard_table(ACPI_PTR_TO_PHYSADDR(table),
ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
TRUE, FALSE, &table_index);
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
/*
* Note: Now table is "INSTALLED", it must be validated before
* using.
*/
status =
acpi_tb_validate_table(&acpi_gbl_root_table_list.
tables[table_index]);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
status = acpi_ns_load_table(table_index, acpi_gbl_root_node);
/* 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);
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
return_ACPI_STATUS(status);
}
acpi_status acpi_load_table(struct acpi_table_header *table)
{
acpi_status status;
struct acpi_table_desc table_desc;
u32 table_index;
ACPI_FUNCTION_TRACE(acpi_load_table);
/* Parameter validation */
if (!table) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Init local table descriptor */
ACPI_MEMSET(&table_desc, 0, sizeof(struct acpi_table_desc));
table_desc.address = ACPI_PTR_TO_PHYSADDR(table);
table_desc.pointer = table;
table_desc.length = table->length;
table_desc.flags = ACPI_TABLE_ORIGIN_UNKNOWN;
/* Must acquire the interpreter lock during this operation */
status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Install the table and load it into the namespace */
ACPI_INFO((AE_INFO, "Host-directed Dynamic ACPI Table Load:"));
status = acpi_tb_add_table(&table_desc, &table_index);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
status = acpi_ns_load_table(table_index, acpi_gbl_root_node);
/* 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);
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
return_ACPI_STATUS(status);
}
acpi_status
acpi_tb_load_table(u32 table_index, struct acpi_namespace_node *parent_node)
{
struct acpi_table_header *table;
acpi_status status;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(tb_load_table);
/*
* Note: Now table is "INSTALLED", it must be validated before
* using.
*/
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_ns_load_table(table_index, parent_node);
/*
* This case handles the legacy option that groups all module-level
* code blocks together and defers execution until all of the tables
* are loaded. Execute all of these blocks at this time.
* Execute any module-level code that was detected during the table
* load phase.
*
* Note: this option is deprecated and will be eliminated in the
* future. Use of this option can cause problems with AML code that
* depends upon in-order immediate execution of module-level code.
*/
acpi_ns_exec_module_code_list();
/*
* Update GPEs for any new _Lxx/_Exx methods. Ignore errors. The host is
* responsible for discovering any new wake GPEs by running _PRW methods
* that may have been loaded by this table.
*/
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_SUCCESS(status)) {
acpi_ev_update_gpes(owner_id);
}
/* Invoke table handler */
acpi_tb_notify_table(ACPI_TABLE_EVENT_LOAD, table);
return_ACPI_STATUS(status);
}
acpi_status
acpi_tb_load_table(u32 table_index, struct acpi_namespace_node *parent_node)
{
struct acpi_table_header *table;
acpi_status status;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(tb_load_table);
/*
* Note: Now table is "INSTALLED", it must be validated before
* using.
*/
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_ns_load_table(table_index, parent_node);
/* Execute any module-level code that was found in the table */
if (!acpi_gbl_parse_table_as_term_list
&& acpi_gbl_group_module_level_code) {
acpi_ns_exec_module_code_list();
}
/*
* Update GPEs for any new _Lxx/_Exx methods. Ignore errors. The host is
* responsible for discovering any new wake GPEs by running _PRW methods
* that may have been loaded by this table.
*/
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_SUCCESS(status)) {
acpi_ev_update_gpes(owner_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_ACPI_STATUS(status);
}
acpi_status
acpi_load_table (
acpi_table_header *table_ptr)
{
acpi_status status;
acpi_table_desc table_info;
FUNCTION_TRACE ("Acpi_load_table");
if (!table_ptr) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Copy the table to a local buffer */
status = acpi_tb_get_table (0, table_ptr, &table_info);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Install the new table into the local data structures */
status = acpi_tb_install_table (NULL, &table_info);
if (ACPI_FAILURE (status)) {
/* Free table allocated by Acpi_tb_get_table */
acpi_tb_delete_single_table (&table_info);
return_ACPI_STATUS (status);
}
status = acpi_ns_load_table (table_info.installed_desc, acpi_gbl_root_node);
if (ACPI_FAILURE (status)) {
/* Uninstall table and free the buffer */
acpi_tb_uninstall_table (table_info.installed_desc);
return_ACPI_STATUS (status);
}
return_ACPI_STATUS (status);
}
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.opcode = AML_LOAD_OP;
*ddb_handle = obj_desc;
/* Install the new table into the local data structures */
obj_desc->reference.object = ACPI_CAST_PTR(void,
(unsigned long)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_load_table
*
* PARAMETERS: table_ptr - pointer to a buffer containing the entire
* table to be loaded
*
* RETURN: Status
*
* DESCRIPTION: This function is called to load a table from the caller's
* buffer. The buffer must contain an entire ACPI Table including
* a valid header. The header fields will be verified, and if it
* is determined that the table is invalid, the call will fail.
*
******************************************************************************/
acpi_status acpi_load_table(struct acpi_table_header *table_ptr)
{
acpi_status status;
u32 table_index;
struct acpi_table_desc table_desc;
if (!table_ptr)
return AE_BAD_PARAMETER;
ACPI_MEMSET(&table_desc, 0, sizeof(struct acpi_table_desc));
table_desc.pointer = table_ptr;
table_desc.length = table_ptr->length;
table_desc.flags = ACPI_TABLE_ORIGIN_UNKNOWN;
/*
* Install the new table into the local data structures
*/
status = acpi_tb_add_table(&table_desc, &table_index);
if (ACPI_FAILURE(status)) {
return status;
}
status = acpi_ns_load_table(table_index, acpi_gbl_root_node);
return status;
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_load_namespace
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
* the RSDT/XSDT.
*
******************************************************************************/
acpi_status acpi_tb_load_namespace(void)
{
acpi_status status;
u32 i;
struct acpi_table_header *new_dsdt;
struct acpi_table_desc *table;
u32 tables_loaded = 0;
u32 tables_failed = 0;
ACPI_FUNCTION_TRACE(tb_load_namespace);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/*
* Load the namespace. The DSDT is required, but any SSDT and
* PSDT tables are optional. Verify the DSDT.
*/
table = &acpi_gbl_root_table_list.tables[acpi_gbl_dsdt_index];
if (!acpi_gbl_root_table_list.current_table_count ||
!ACPI_COMPARE_NAMESEG(table->signature.ascii, ACPI_SIG_DSDT) ||
ACPI_FAILURE(acpi_tb_validate_table(table))) {
status = AE_NO_ACPI_TABLES;
goto unlock_and_exit;
}
/*
* Save the DSDT pointer for simple access. This is the mapped memory
* address. We must take care here because the address of the .Tables
* array can change dynamically as tables are loaded at run-time. Note:
* .Pointer field is not validated until after call to acpi_tb_validate_table.
*/
acpi_gbl_DSDT = table->pointer;
/*
* Optionally copy the entire DSDT to local memory (instead of simply
* mapping it.) There are some BIOSs that corrupt or replace the original
* DSDT, creating the need for this option. Default is FALSE, do not copy
* the DSDT.
*/
if (acpi_gbl_copy_dsdt_locally) {
new_dsdt = acpi_tb_copy_dsdt(acpi_gbl_dsdt_index);
if (new_dsdt) {
acpi_gbl_DSDT = new_dsdt;
}
}
/*
* Save the original DSDT header for detection of table corruption
* and/or replacement of the DSDT from outside the OS.
*/
memcpy(&acpi_gbl_original_dsdt_header, acpi_gbl_DSDT,
sizeof(struct acpi_table_header));
/* Load and parse tables */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
status = acpi_ns_load_table(acpi_gbl_dsdt_index, acpi_gbl_root_node);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "[DSDT] table load failed"));
tables_failed++;
} else {
tables_loaded++;
}
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
table = &acpi_gbl_root_table_list.tables[i];
if (!table->address ||
(!ACPI_COMPARE_NAMESEG
(table->signature.ascii, ACPI_SIG_SSDT)
&& !ACPI_COMPARE_NAMESEG(table->signature.ascii,
ACPI_SIG_PSDT)
&& !ACPI_COMPARE_NAMESEG(table->signature.ascii,
ACPI_SIG_OSDT))
|| ACPI_FAILURE(acpi_tb_validate_table(table))) {
continue;
}
/* Ignore errors while loading tables, get as many as possible */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
status = acpi_ns_load_table(i, acpi_gbl_root_node);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"(%4.4s:%8.8s) while loading table",
table->signature.ascii,
table->pointer->oem_table_id));
tables_failed++;
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"Table [%4.4s:%8.8s] (id FF) - Table namespace load failed\n\n",
table->signature.ascii,
table->pointer->oem_table_id));
} else {
tables_loaded++;
}
}
if (!tables_failed) {
ACPI_INFO(("%u ACPI AML tables successfully acquired and loaded", tables_loaded));
} else {
ACPI_ERROR((AE_INFO,
"%u table load failures, %u successful",
tables_failed, tables_loaded));
/* Indicate at least one failure */
status = AE_CTRL_TERMINATE;
}
#ifdef ACPI_APPLICATION
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "\n"));
#endif
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
acpi_status
acpi_load_table (
struct acpi_table_header *table_ptr)
{
acpi_status status;
struct acpi_table_desc table_info;
struct acpi_pointer address;
ACPI_FUNCTION_TRACE ("acpi_load_table");
if (!table_ptr) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Copy the table to a local buffer */
address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
address.pointer.logical = table_ptr;
status = acpi_tb_get_table_body (&address, table_ptr, &table_info);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Install the new table into the local data structures */
status = acpi_tb_install_table (&table_info);
if (ACPI_FAILURE (status)) {
/* Free table allocated by acpi_tb_get_table_body */
acpi_tb_delete_single_table (&table_info);
return_ACPI_STATUS (status);
}
/* Convert the table to common format if necessary */
switch (table_info.type) {
case ACPI_TABLE_FADT:
status = acpi_tb_convert_table_fadt ();
break;
case ACPI_TABLE_FACS:
status = acpi_tb_build_common_facs (&table_info);
break;
default:
/* Load table into namespace if it contains executable AML */
status = acpi_ns_load_table (table_info.installed_desc, acpi_gbl_root_node);
break;
}
if (ACPI_FAILURE (status)) {
/* Uninstall table and free the buffer */
(void) acpi_tb_uninstall_table (table_info.installed_desc);
}
return_ACPI_STATUS (status);
}
static acpi_status
acpi_ex_add_table(struct acpi_table_header *table,
struct acpi_namespace_node *parent_node,
union acpi_operand_object **ddb_handle)
{
acpi_status status;
struct acpi_table_desc table_info;
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.opcode = AML_LOAD_OP;
*ddb_handle = obj_desc;
/* Install the new table into the local data structures */
ACPI_MEMSET(&table_info, 0, sizeof(struct acpi_table_desc));
table_info.type = ACPI_TABLE_ID_SSDT;
table_info.pointer = table;
table_info.length = (acpi_size) table->length;
table_info.allocation = ACPI_MEM_ALLOCATED;
status = acpi_tb_install_table(&table_info);
obj_desc->reference.object = table_info.installed_desc;
if (ACPI_FAILURE(status)) {
if (status == AE_ALREADY_EXISTS) {
/* Table already exists, just return the handle */
return_ACPI_STATUS(AE_OK);
}
goto cleanup;
}
/* Add the table to the namespace */
status = acpi_ns_load_table(table_info.installed_desc, parent_node);
if (ACPI_FAILURE(status)) {
/* Uninstall table on error */
(void)acpi_tb_uninstall_table(table_info.installed_desc);
goto cleanup;
}
return_ACPI_STATUS(AE_OK);
cleanup:
acpi_ut_remove_reference(obj_desc);
*ddb_handle = NULL;
return_ACPI_STATUS(status);
}
acpi_status
acpi_ns_load_table_by_type (
acpi_table_type table_type)
{
u32 i;
acpi_status status = AE_OK;
acpi_table_desc *table_desc;
FUNCTION_TRACE ("Ns_load_table_by_type");
acpi_ut_acquire_mutex (ACPI_MTX_TABLES);
/*
* Table types supported are:
* DSDT (one), SSDT/PSDT (multiple)
*/
switch (table_type) {
case ACPI_TABLE_DSDT:
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading DSDT\n"));
table_desc = &acpi_gbl_acpi_tables[ACPI_TABLE_DSDT];
/* If table already loaded into namespace, just return */
if (table_desc->loaded_into_namespace) {
goto unlock_and_exit;
}
table_desc->table_id = TABLE_ID_DSDT;
/* Now load the single DSDT */
status = acpi_ns_load_table (table_desc, acpi_gbl_root_node);
if (ACPI_SUCCESS (status)) {
table_desc->loaded_into_namespace = TRUE;
}
break;
case ACPI_TABLE_SSDT:
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading %d SSDTs\n",
acpi_gbl_acpi_tables[ACPI_TABLE_SSDT].count));
/*
* Traverse list of SSDT tables
*/
table_desc = &acpi_gbl_acpi_tables[ACPI_TABLE_SSDT];
for (i = 0; i < acpi_gbl_acpi_tables[ACPI_TABLE_SSDT].count; i++) {
/*
* Only attempt to load table if it is not
* already loaded!
*/
if (!table_desc->loaded_into_namespace) {
status = acpi_ns_load_table (table_desc, acpi_gbl_root_node);
if (ACPI_FAILURE (status)) {
break;
}
table_desc->loaded_into_namespace = TRUE;
}
table_desc = table_desc->next;
}
break;
case ACPI_TABLE_PSDT:
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading %d PSDTs\n",
acpi_gbl_acpi_tables[ACPI_TABLE_PSDT].count));
/*
* Traverse list of PSDT tables
*/
table_desc = &acpi_gbl_acpi_tables[ACPI_TABLE_PSDT];
for (i = 0; i < acpi_gbl_acpi_tables[ACPI_TABLE_PSDT].count; i++) {
/* Only attempt to load table if it is not already loaded! */
if (!table_desc->loaded_into_namespace) {
status = acpi_ns_load_table (table_desc, acpi_gbl_root_node);
if (ACPI_FAILURE (status)) {
break;
}
table_desc->loaded_into_namespace = TRUE;
}
table_desc = table_desc->next;
}
break;
default:
status = AE_SUPPORT;
break;
}
unlock_and_exit:
acpi_ut_release_mutex (ACPI_MTX_TABLES);
return_ACPI_STATUS (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_load_namespace
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
* the RSDT/XSDT.
*
******************************************************************************/
static acpi_status acpi_tb_load_namespace(void)
{
acpi_status status;
u32 i;
struct acpi_table_header *new_dsdt;
ACPI_FUNCTION_TRACE(tb_load_namespace);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/*
* Load the namespace. The DSDT is required, but any SSDT and
* PSDT tables are optional. Verify the DSDT.
*/
if (!acpi_gbl_root_table_list.current_table_count ||
!ACPI_COMPARE_NAME(&
(acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT].signature),
ACPI_SIG_DSDT)
||
ACPI_FAILURE(acpi_tb_verify_table
(&acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT]))) {
status = AE_NO_ACPI_TABLES;
goto unlock_and_exit;
}
/*
* Save the DSDT pointer for simple access. This is the mapped memory
* address. We must take care here because the address of the .Tables
* array can change dynamically as tables are loaded at run-time. Note:
* .Pointer field is not validated until after call to acpi_tb_verify_table.
*/
acpi_gbl_DSDT =
acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].pointer;
/*
* Optionally copy the entire DSDT to local memory (instead of simply
* mapping it.) There are some BIOSs that corrupt or replace the original
* DSDT, creating the need for this option. Default is FALSE, do not copy
* the DSDT.
*/
if (acpi_gbl_copy_dsdt_locally) {
new_dsdt = acpi_tb_copy_dsdt(ACPI_TABLE_INDEX_DSDT);
if (new_dsdt) {
acpi_gbl_DSDT = new_dsdt;
}
}
/*
* Save the original DSDT header for detection of table corruption
* and/or replacement of the DSDT from outside the OS.
*/
ACPI_MEMCPY(&acpi_gbl_original_dsdt_header, acpi_gbl_DSDT,
sizeof(struct acpi_table_header));
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
/* Load and parse tables */
status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
if ((!ACPI_COMPARE_NAME
(&(acpi_gbl_root_table_list.tables[i].signature),
ACPI_SIG_SSDT)
&&
!ACPI_COMPARE_NAME(&
(acpi_gbl_root_table_list.tables[i].
signature), ACPI_SIG_PSDT))
||
ACPI_FAILURE(acpi_tb_verify_table
(&acpi_gbl_root_table_list.tables[i]))) {
continue;
}
if (no_auto_ssdt) {
printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
continue;
}
/* Ignore errors while loading tables, get as many as possible */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
(void)acpi_ns_load_table(i, acpi_gbl_root_node);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
}
ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_load_namespace
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
* the RSDT/XSDT.
*
******************************************************************************/
static acpi_status acpi_tb_load_namespace(void)
{
acpi_status status;
u32 i;
ACPI_FUNCTION_TRACE(tb_load_namespace);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/*
* Load the namespace. The DSDT is required, but any SSDT and PSDT tables
* are optional.
*/
if (!acpi_gbl_root_table_list.count ||
!ACPI_COMPARE_NAME(&
(acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT].signature),
ACPI_SIG_DSDT)
||
ACPI_FAILURE(acpi_tb_verify_table
(&acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT]))) {
status = AE_NO_ACPI_TABLES;
goto unlock_and_exit;
}
/* A valid DSDT is required */
status =
acpi_tb_verify_table(&acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT]);
if (ACPI_FAILURE(status)) {
status = AE_NO_ACPI_TABLES;
goto unlock_and_exit;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
/* Load and parse tables */
status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
if ((!ACPI_COMPARE_NAME
(&(acpi_gbl_root_table_list.tables[i].signature),
ACPI_SIG_SSDT)
&&
!ACPI_COMPARE_NAME(&
(acpi_gbl_root_table_list.tables[i].
signature), ACPI_SIG_PSDT))
||
ACPI_FAILURE(acpi_tb_verify_table
(&acpi_gbl_root_table_list.tables[i]))) {
continue;
}
if (no_auto_ssdt) {
printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
continue;
}
/* Ignore errors while loading tables, get as many as possible */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
(void)acpi_ns_load_table(i, acpi_gbl_root_node);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
}
ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_load_namespace
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
* the RSDT/XSDT.
*
******************************************************************************/
static acpi_status acpi_tb_load_namespace(void)
{
acpi_status status;
struct acpi_table_header *table;
u32 i;
ACPI_FUNCTION_TRACE(tb_load_namespace);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/*
* Load the namespace. The DSDT is required, but any SSDT and PSDT tables
* are optional.
*/
if (!acpi_gbl_root_table_list.count ||
!ACPI_COMPARE_NAME(&
(acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT].signature),
ACPI_SIG_DSDT)
||
ACPI_FAILURE(acpi_tb_verify_table
(&acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT]))) {
status = AE_NO_ACPI_TABLES;
goto unlock_and_exit;
}
/*
* Find DSDT table
*/
status =
acpi_os_table_override(acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT].pointer,
&table);
if (ACPI_SUCCESS(status) && table) {
/*
* DSDT table has been found
*/
acpi_tb_delete_table(&acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT]);
acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].pointer =
table;
acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].length =
table->length;
acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].flags =
ACPI_TABLE_ORIGIN_UNKNOWN;
ACPI_INFO((AE_INFO, "Table DSDT replaced by host OS"));
acpi_tb_print_table_header(0, table);
if (no_auto_ssdt == 0) {
printk(KERN_WARNING "ACPI: DSDT override uses original SSDTs unless \"acpi_no_auto_ssdt\"\n");
}
}
status =
acpi_tb_verify_table(&acpi_gbl_root_table_list.
tables[ACPI_TABLE_INDEX_DSDT]);
if (ACPI_FAILURE(status)) {
/* A valid DSDT is required */
status = AE_NO_ACPI_TABLES;
goto unlock_and_exit;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
/*
* Load and parse tables.
*/
status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Load any SSDT or PSDT tables. Note: Loop leaves tables locked
*/
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
if ((!ACPI_COMPARE_NAME
(&(acpi_gbl_root_table_list.tables[i].signature),
ACPI_SIG_SSDT)
&&
!ACPI_COMPARE_NAME(&
(acpi_gbl_root_table_list.tables[i].
signature), ACPI_SIG_PSDT))
||
ACPI_FAILURE(acpi_tb_verify_table
(&acpi_gbl_root_table_list.tables[i]))) {
continue;
}
if (no_auto_ssdt) {
printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
continue;
}
/* Ignore errors while loading tables, get as many as possible */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
(void)acpi_ns_load_table(i, acpi_gbl_root_node);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
}
ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
