/******************************************************************************* * * FUNCTION: acpi_terminate * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources. *
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION acpi_terminate(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_terminate);
/* Shutdown and free all resources */
acpi_ut_subsystem_shutdown();
/* Free the mutex objects */
acpi_ut_mutex_terminate();
/* Now we can shutdown the OS-dependent layer */
status = acpi_os_terminate();
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_terminate)
#ifndef ACPI_ASL_COMPILER #ifdef ACPI_FUTURE_USAGE /******************************************************************************* * * FUNCTION: acpi_subsystem_status * * PARAMETERS: None * * RETURN: Status of the ACPI subsystem * * DESCRIPTION: Other drivers that use the ACPI subsystem should call this * before making any other calls, to ensure the subsystem * initialized successfully. *
******************************************************************************/
acpi_status acpi_subsystem_status(void)
{
/******************************************************************************* * * FUNCTION: acpi_get_system_info * * PARAMETERS: out_buffer - A buffer to receive the resources for the * device * * RETURN: status - the status of the call * * DESCRIPTION: This function is called to get information about the current * state of the ACPI subsystem. It will return system information * in the out_buffer. * * If the function fails an appropriate status will be returned * and the value of out_buffer is undefined. *
******************************************************************************/
acpi_status acpi_get_system_info(struct acpi_buffer *out_buffer)
{ struct acpi_system_info *info_ptr;
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_get_system_info);
/* Parameter validation */
status = acpi_ut_validate_buffer(out_buffer); if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Validate/Allocate/Clear caller buffer */
status =
acpi_ut_initialize_buffer(out_buffer, sizeof(struct acpi_system_info)); if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/******************************************************************************* * * FUNCTION: acpi_get_statistics * * PARAMETERS: stats - Where the statistics are returned * * RETURN: status - the status of the call * * DESCRIPTION: Get the contents of the various system counters *
******************************************************************************/
acpi_status acpi_get_statistics(struct acpi_statistics *stats)
{
ACPI_FUNCTION_TRACE(acpi_get_statistics);
/* Parameter validation */
if (!stats) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/***************************************************************************** * * FUNCTION: acpi_install_initialization_handler * * PARAMETERS: handler - Callback procedure * function - Not (currently) used, see below * * RETURN: Status * * DESCRIPTION: Install an initialization handler * * TBD: When a second function is added, must save the Function also. *
****************************************************************************/
acpi_status
acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
{
if (!handler) { return (AE_BAD_PARAMETER);
}
if (acpi_gbl_init_handler) { return (AE_ALREADY_EXISTS);
}
/***************************************************************************** * * FUNCTION: acpi_install_interface * * PARAMETERS: interface_name - The interface to install * * RETURN: Status * * DESCRIPTION: Install an _OSI interface to the global list *
****************************************************************************/
acpi_status acpi_install_interface(acpi_string interface_name)
{
acpi_status status; struct acpi_interface_info *interface_info;
/* Parameter validation */
if (!interface_name || (strlen(interface_name) == 0)) { return (AE_BAD_PARAMETER);
}
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); if (ACPI_FAILURE(status)) { return (status);
}
/* Check if the interface name is already in the global list */
interface_info = acpi_ut_get_interface(interface_name); if (interface_info) { /* * The interface already exists in the list. This is OK if the * interface has been marked invalid -- just clear the bit.
*/ if (interface_info->flags & ACPI_OSI_INVALID) {
interface_info->flags &= ~ACPI_OSI_INVALID;
status = AE_OK;
} else {
status = AE_ALREADY_EXISTS;
}
} else { /* New interface name, install into the global list */
status = acpi_ut_install_interface(interface_name);
}
/***************************************************************************** * * FUNCTION: acpi_remove_interface * * PARAMETERS: interface_name - The interface to remove * * RETURN: Status * * DESCRIPTION: Remove an _OSI interface from the global list *
****************************************************************************/
acpi_status acpi_remove_interface(acpi_string interface_name)
{
acpi_status status;
/* Parameter validation */
if (!interface_name || (strlen(interface_name) == 0)) { return (AE_BAD_PARAMETER);
}
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); if (ACPI_FAILURE(status)) { return (status);
}
status = acpi_ut_remove_interface(interface_name);
/***************************************************************************** * * FUNCTION: acpi_install_interface_handler * * PARAMETERS: handler - The _OSI interface handler to install * NULL means "remove existing handler" * * RETURN: Status * * DESCRIPTION: Install a handler for the predefined _OSI ACPI method. * invoked during execution of the internal implementation of * _OSI. A NULL handler simply removes any existing handler. *
****************************************************************************/
acpi_status acpi_install_interface_handler(acpi_interface_handler handler)
{
acpi_status status;
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); if (ACPI_FAILURE(status)) { return (status);
}
if (handler && acpi_gbl_interface_handler) {
status = AE_ALREADY_EXISTS;
} else {
acpi_gbl_interface_handler = handler;
}
/***************************************************************************** * * FUNCTION: acpi_check_address_range * * PARAMETERS: space_id - Address space ID * address - Start address * length - Length * warn - TRUE if warning on overlap desired * * RETURN: Count of the number of conflicts detected. * * DESCRIPTION: Check if the input address range overlaps any of the * ASL operation region address ranges. *
****************************************************************************/
ACPI_EXPORT_SYMBOL(acpi_check_address_range) #endif/* !ACPI_ASL_COMPILER */ /******************************************************************************* * * FUNCTION: acpi_decode_pld_buffer * * PARAMETERS: in_buffer - Buffer returned by _PLD method * length - Length of the in_buffer * return_buffer - Where the decode buffer is returned * * RETURN: Status and the decoded _PLD buffer. User must deallocate * the buffer via ACPI_FREE. * * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into * a local struct that is much more useful to an ACPI driver. *
******************************************************************************/
acpi_status
acpi_decode_pld_buffer(u8 *in_buffer,
acpi_size length, struct acpi_pld_info **return_buffer)
{ struct acpi_pld_info *pld_info;
u32 *buffer = ACPI_CAST_PTR(u32, in_buffer);
u32 dword;
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