acpi_status
acpi_tb_install_table (
acpi_table_header *table_ptr,
acpi_table_desc *table_info)
{
acpi_status status;
FUNCTION_TRACE ("Tb_install_table");
/*
* Check the table signature and make sure it is recognized
* Also checks the header checksum
*/
status = acpi_tb_recognize_table (table_ptr, table_info);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Lock tables while installing */
acpi_ut_acquire_mutex (ACPI_MTX_TABLES);
/* Install the table into the global data structure */
status = acpi_tb_init_table_descriptor (table_info->type, table_info);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%s located at %p\n",
acpi_gbl_acpi_table_data[table_info->type].name, table_info->pointer));
acpi_ut_release_mutex (ACPI_MTX_TABLES);
return_ACPI_STATUS (status);
}
acpi_status
acpi_tb_get_primary_table (
struct acpi_pointer *address,
struct acpi_table_desc *table_info)
{
acpi_status status;
struct acpi_table_header header;
ACPI_FUNCTION_TRACE ("tb_get_primary_table");
/* Ignore a NULL address in the RSDT */
if (!address->pointer.value) {
return_ACPI_STATUS (AE_OK);
}
/*
* Get the header in order to get signature and table size
*/
status = acpi_tb_get_table_header (address, &header);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Clear the table_info */
ACPI_MEMSET (table_info, 0, sizeof (struct acpi_table_desc));
/*
* Check the table signature and make sure it is recognized.
* Also checks the header checksum
*/
table_info->pointer = &header;
status = acpi_tb_recognize_table (table_info, ACPI_TABLE_PRIMARY);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Get the entire table */
status = acpi_tb_get_table_body (address, &header, table_info);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Install the table */
status = acpi_tb_install_table (table_info);
return_ACPI_STATUS (status);
}
static acpi_status
acpi_tb_get_secondary_table (
struct acpi_pointer *address,
acpi_string signature,
struct acpi_table_desc *table_info)
{
acpi_status status;
struct acpi_table_header header;
ACPI_FUNCTION_TRACE_STR ("tb_get_secondary_table", signature);
/* Get the header in order to match the signature */
status = acpi_tb_get_table_header (address, &header);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Signature must match request */
if (ACPI_STRNCMP (header.signature, signature, ACPI_NAME_SIZE)) {
ACPI_REPORT_ERROR ((
"Incorrect table signature - wanted [%s] found [%4.4s]\n",
signature, header.signature));
return_ACPI_STATUS (AE_BAD_SIGNATURE);
}
/*
* Check the table signature and make sure it is recognized.
* Also checks the header checksum
*/
table_info->pointer = &header;
status = acpi_tb_recognize_table (table_info, ACPI_TABLE_SECONDARY);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Get the entire table */
status = acpi_tb_get_table_body (address, &header, table_info);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Install the table */
status = acpi_tb_install_table (table_info);
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;
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);
}
/* Check signature for a valid table type */
status = acpi_tb_recognize_table(&table_info, ACPI_TABLE_ALL);
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)) {
if (status == AE_ALREADY_EXISTS) {
/* Table already exists, no error */
status = AE_OK;
}
/* 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_ID_FADT:
status = acpi_tb_convert_table_fadt();
break;
case ACPI_TABLE_ID_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);
}
