linux/include/acpi/acpixf.h

/******************************************************************************
 *
 * Name: acpixf.h - External interfaces to the ACPI subsystem
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2014, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#ifndef __ACXFACE_H__
#define __ACXFACE_H__

/* Current ACPICA subsystem version in YYYYMMDD format */

#define ACPI_CA_VERSION                 0x20140325

#include <acpi/acconfig.h>
#include <acpi/actypes.h>
#include <acpi/actbl.h>
#include <acpi/acbuffer.h>

extern u8 acpi_gbl_permanent_mmap;

/*
 * Ensure that the globals are actually defined and initialized only once.
 *
 * The use of these macros allows a single list of globals (here) in order
 * to simplify maintenance of the code.
 */
#ifdef DEFINE_ACPI_GLOBALS
#define ACPI_GLOBAL(type,name) \
	extern type name; \
	type name

#define ACPI_INIT_GLOBAL(type,name,value) \
	type name=value

#else
#ifndef ACPI_GLOBAL
#define ACPI_GLOBAL(type,name) \
	extern type name
#endif

#ifndef ACPI_INIT_GLOBAL
#define ACPI_INIT_GLOBAL(type,name,value) \
	extern type name
#endif
#endif

/* Public globals, available from outside ACPICA subsystem */

/*****************************************************************************
 *
 * Runtime configuration (static defaults that can be overriden at runtime)
 *
 ****************************************************************************/

/*
 * Enable "slack" in the AML interpreter?  Default is FALSE, and the
 * interpreter strictly follows the ACPI specification. Setting to TRUE
 * allows the interpreter to ignore certain errors and/or bad AML constructs.
 *
 * Currently, these features are enabled by this flag:
 *
 * 1) Allow "implicit return" of last value in a control method
 * 2) Allow access beyond the end of an operation region
 * 3) Allow access to uninitialized locals/args (auto-init to integer 0)
 * 4) Allow ANY object type to be a source operand for the Store() operator
 * 5) Allow unresolved references (invalid target name) in package objects
 * 6) Enable warning messages for behavior that is not ACPI spec compliant
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_enable_interpreter_slack, FALSE);

/*
 * Automatically serialize all methods that create named objects? Default
 * is TRUE, meaning that all non_serialized methods are scanned once at
 * table load time to determine those that create named objects. Methods
 * that create named objects are marked Serialized in order to prevent
 * possible run-time problems if they are entered by more than one thread.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_auto_serialize_methods, TRUE);

/*
 * Create the predefined _OSI method in the namespace? Default is TRUE
 * because ACPICA is fully compatible with other ACPI implementations.
 * Changing this will revert ACPICA (and machine ASL) to pre-OSI behavior.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_create_osi_method, TRUE);

/*
 * Optionally use default values for the ACPI register widths. Set this to
 * TRUE to use the defaults, if an FADT contains incorrect widths/lengths.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_use_default_register_widths, TRUE);

/*
 * Optionally enable output from the AML Debug Object.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_enable_aml_debug_object, FALSE);

/*
 * 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.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_copy_dsdt_locally, FALSE);

/*
 * Optionally ignore an XSDT if present and use the RSDT instead.
 * Although the ACPI specification requires that an XSDT be used instead
 * of the RSDT, the XSDT has been found to be corrupt or ill-formed on
 * some machines. Default behavior is to use the XSDT if present.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_do_not_use_xsdt, FALSE);

/*
 * Optionally use 32-bit FADT addresses if and when there is a conflict
 * (address mismatch) between the 32-bit and 64-bit versions of the
 * address. Although ACPICA adheres to the ACPI specification which
 * requires the use of the corresponding 64-bit address if it is non-zero,
 * some machines have been found to have a corrupted non-zero 64-bit
 * address. Default is FALSE, do not favor the 32-bit addresses.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_use32_bit_fadt_addresses, FALSE);

/*
 * Optionally truncate I/O addresses to 16 bits. Provides compatibility
 * with other ACPI implementations. NOTE: During ACPICA initialization,
 * this value is set to TRUE if any Windows OSI strings have been
 * requested by the BIOS.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_truncate_io_addresses, FALSE);

/*
 * Disable runtime checking and repair of values returned by control methods.
 * Use only if the repair is causing a problem on a particular machine.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_disable_auto_repair, FALSE);

/*
 * Optionally do not install any SSDTs from the RSDT/XSDT during initialization.
 * This can be useful for debugging ACPI problems on some machines.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_disable_ssdt_table_install, FALSE);

/*
 * We keep track of the latest version of Windows that has been requested by
 * the BIOS.  ACPI 5.0.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_osi_data, 0);

/*
 * ACPI 5.0 introduces the concept of a "reduced hardware platform", meaning
 * that the ACPI hardware is no longer required. A flag in the FADT indicates
 * a reduced HW machine, and that flag is duplicated here for convenience.
 */
ACPI_INIT_GLOBAL(u8, acpi_gbl_reduced_hardware, FALSE);

/*
 * This mechanism is used to trace a specified AML method. The method is
 * traced each time it is executed.
 */
ACPI_INIT_GLOBAL(u32, acpi_gbl_trace_flags, 0);
ACPI_INIT_GLOBAL(acpi_name, acpi_gbl_trace_method_name, 0);

/*
 * Runtime configuration of debug output control masks. We want the debug
 * switches statically initialized so they are already set when the debugger
 * is entered.
 */
ACPI_INIT_GLOBAL(u32, acpi_dbg_level, ACPI_DEBUG_DEFAULT);
ACPI_INIT_GLOBAL(u32, acpi_dbg_layer, 0);

/*
 * Globals that are publically available
 */
ACPI_GLOBAL(u32, acpi_current_gpe_count);
ACPI_GLOBAL(struct acpi_table_fadt, acpi_gbl_FADT);
ACPI_GLOBAL(u8, acpi_gbl_system_awake_and_running);

/*
 * Hardware-reduced prototypes. All interfaces that use these macros will
 * be configured out of the ACPICA build if the ACPI_REDUCED_HARDWARE flag
 * is set to TRUE.
 */
#if (!ACPI_REDUCED_HARDWARE)
#define ACPI_HW_DEPENDENT_RETURN_STATUS(prototype) \
	prototype;

#define ACPI_HW_DEPENDENT_RETURN_OK(prototype) \
	prototype;

#define ACPI_HW_DEPENDENT_RETURN_VOID(prototype) \
	prototype;

#else
#define ACPI_HW_DEPENDENT_RETURN_STATUS(prototype) \
	static ACPI_INLINE prototype {return(AE_NOT_CONFIGURED);}

#define ACPI_HW_DEPENDENT_RETURN_OK(prototype) \
	static ACPI_INLINE prototype {return(AE_OK);}

#define ACPI_HW_DEPENDENT_RETURN_VOID(prototype) \
	static ACPI_INLINE prototype {return;}

#endif				/* !ACPI_REDUCED_HARDWARE */

/*
 * Error-message prototypes. All interfaces that use these macros will
 * be configured out of the ACPICA build if the ACPI_NO_ERROR_MESSAGE flag
 * is defined.
 */
#ifndef ACPI_NO_ERROR_MESSAGES
#define ACPI_MSG_DEPENDENT_RETURN_VOID(prototype) \
	prototype;

#else
#define ACPI_MSG_DEPENDENT_RETURN_VOID(prototype) \
	static ACPI_INLINE prototype {return;}

#endif				/* ACPI_NO_ERROR_MESSAGES */

/*
 * Initialization
 */
acpi_status __init
acpi_initialize_tables(struct acpi_table_desc *initial_storage,
		       u32 initial_table_count, u8 allow_resize);

acpi_status __init acpi_initialize_subsystem(void);

acpi_status __init acpi_enable_subsystem(u32 flags);

acpi_status __init acpi_initialize_objects(u32 flags);

acpi_status __init acpi_terminate(void);

/*
 * Miscellaneous global interfaces
 */
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable(void))
#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_subsystem_status(void);
#endif

#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_get_system_info(struct acpi_buffer *ret_buffer);
#endif

acpi_status acpi_get_statistics(struct acpi_statistics *stats);

const char *acpi_format_exception(acpi_status exception);

acpi_status acpi_purge_cached_objects(void);

acpi_status acpi_install_interface(acpi_string interface_name);

acpi_status acpi_remove_interface(acpi_string interface_name);

acpi_status acpi_update_interfaces(u8 action);

u32
acpi_check_address_range(acpi_adr_space_type space_id,
			 acpi_physical_address address,
			 acpi_size length, u8 warn);

acpi_status
acpi_decode_pld_buffer(u8 *in_buffer,
		       acpi_size length, struct acpi_pld_info **return_buffer);

/*
 * ACPI table load/unload interfaces
 */
acpi_status __init
acpi_install_table(acpi_physical_address address, u8 physical);

acpi_status acpi_load_table(struct acpi_table_header *table);

acpi_status acpi_unload_parent_table(acpi_handle object);

acpi_status __init acpi_load_tables(void);

/*
 * ACPI table manipulation interfaces
 */
acpi_status __init acpi_reallocate_root_table(void);

acpi_status __init acpi_find_root_pointer(acpi_size *rsdp_address);

acpi_status acpi_unload_table_id(acpi_owner_id id);

acpi_status
acpi_get_table_header(acpi_string signature,
		      u32 instance, struct acpi_table_header *out_table_header);

acpi_status
acpi_get_table_with_size(acpi_string signature,
	       u32 instance, struct acpi_table_header **out_table,
	       acpi_size *tbl_size);

acpi_status
acpi_get_table(acpi_string signature,
	       u32 instance, struct acpi_table_header **out_table);

acpi_status
acpi_get_table_by_index(u32 table_index, struct acpi_table_header **out_table);

acpi_status
acpi_install_table_handler(acpi_table_handler handler, void *context);

acpi_status acpi_remove_table_handler(acpi_table_handler handler);

/*
 * Namespace and name interfaces
 */
acpi_status
acpi_walk_namespace(acpi_object_type type,
		    acpi_handle start_object,
		    u32 max_depth,
		    acpi_walk_callback descending_callback,
		    acpi_walk_callback ascending_callback,
		    void *context, void **return_value);

acpi_status
acpi_get_devices(const char *HID,
		 acpi_walk_callback user_function,
		 void *context, void **return_value);

acpi_status
acpi_get_name(acpi_handle object,
	      u32 name_type, struct acpi_buffer *ret_path_ptr);

acpi_status
acpi_get_handle(acpi_handle parent,
		acpi_string pathname, acpi_handle * ret_handle);

acpi_status
acpi_attach_data(acpi_handle object, acpi_object_handler handler, void *data);

acpi_status acpi_detach_data(acpi_handle object, acpi_object_handler handler);

acpi_status
acpi_get_data_full(acpi_handle object, acpi_object_handler handler, void **data,
		   void (*callback)(void *));

acpi_status
acpi_get_data(acpi_handle object, acpi_object_handler handler, void **data);

acpi_status
acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags);

/*
 * Object manipulation and enumeration
 */
acpi_status
acpi_evaluate_object(acpi_handle object,
		     acpi_string pathname,
		     struct acpi_object_list *parameter_objects,
		     struct acpi_buffer *return_object_buffer);

acpi_status
acpi_evaluate_object_typed(acpi_handle object,
			   acpi_string pathname,
			   struct acpi_object_list *external_params,
			   struct acpi_buffer *return_buffer,
			   acpi_object_type return_type);

acpi_status
acpi_get_object_info(acpi_handle object,
		     struct acpi_device_info **return_buffer);

acpi_status acpi_install_method(u8 *buffer);

acpi_status
acpi_get_next_object(acpi_object_type type,
		     acpi_handle parent,
		     acpi_handle child, acpi_handle * out_handle);

acpi_status acpi_get_type(acpi_handle object, acpi_object_type * out_type);

acpi_status acpi_get_id(acpi_handle object, acpi_owner_id * out_type);

acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle);

/*
 * Handler interfaces
 */
acpi_status
acpi_install_initialization_handler(acpi_init_handler handler, u32 function);

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_install_sci_handler(acpi_sci_handler
							 address,
							 void *context))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_remove_sci_handler(acpi_sci_handler
							 address))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_install_global_event_handler
				 (acpi_gbl_event_handler handler,
				  void *context))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_install_fixed_event_handler(u32
								  acpi_event,
								  acpi_event_handler
								  handler,
								  void
								  *context))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_remove_fixed_event_handler(u32 acpi_event,
								 acpi_event_handler
								 handler))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_install_gpe_handler(acpi_handle
							  gpe_device,
							  u32 gpe_number,
							  u32 type,
							  acpi_gpe_handler
							  address,
							  void *context))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_remove_gpe_handler(acpi_handle gpe_device,
							 u32 gpe_number,
							 acpi_gpe_handler
							 address))
acpi_status acpi_install_notify_handler(acpi_handle device, u32 handler_type,
					 acpi_notify_handler handler,
					 void *context);

acpi_status
acpi_remove_notify_handler(acpi_handle device,
			   u32 handler_type, acpi_notify_handler handler);

acpi_status
acpi_install_address_space_handler(acpi_handle device,
				   acpi_adr_space_type space_id,
				   acpi_adr_space_handler handler,
				   acpi_adr_space_setup setup, void *context);

acpi_status
acpi_remove_address_space_handler(acpi_handle device,
				  acpi_adr_space_type space_id,
				  acpi_adr_space_handler handler);

#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_install_exception_handler(acpi_exception_handler handler);
#endif

acpi_status acpi_install_interface_handler(acpi_interface_handler handler);

/*
 * Global Lock interfaces
 */
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_acquire_global_lock(u16 timeout,
							 u32 *handle))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_release_global_lock(u32 handle))

/*
 * Interfaces to AML mutex objects
 */
acpi_status
acpi_acquire_mutex(acpi_handle handle, acpi_string pathname, u16 timeout);

acpi_status acpi_release_mutex(acpi_handle handle, acpi_string pathname);

/*
 * Fixed Event interfaces
 */
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_enable_event(u32 event, u32 flags))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_disable_event(u32 event, u32 flags))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_clear_event(u32 event))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_get_event_status(u32 event,
						      acpi_event_status
						      *event_status))

/*
 * General Purpose Event (GPE) Interfaces
 */
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_update_all_gpes(void))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_enable_gpe(acpi_handle gpe_device,
						u32 gpe_number))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_disable_gpe(acpi_handle gpe_device,
						 u32 gpe_number))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_clear_gpe(acpi_handle gpe_device,
					       u32 gpe_number))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_set_gpe(acpi_handle gpe_device,
					     u32 gpe_number, u8 action))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_finish_gpe(acpi_handle gpe_device,
						u32 gpe_number))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_setup_gpe_for_wake(acpi_handle
							parent_device,
							acpi_handle gpe_device,
							u32 gpe_number))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_set_gpe_wake_mask(acpi_handle gpe_device,
							u32 gpe_number,
							u8 action))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_get_gpe_status(acpi_handle gpe_device,
						     u32 gpe_number,
						     acpi_event_status
						     *event_status))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable_all_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_get_gpe_device(u32 gpe_index,
						    acpi_handle * gpe_device))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_install_gpe_block(acpi_handle gpe_device,
						       struct
						       acpi_generic_address
						       *gpe_block_address,
						       u32 register_count,
						       u32 interrupt_number))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				 acpi_remove_gpe_block(acpi_handle gpe_device))

/*
 * Resource interfaces
 */
typedef
acpi_status(*acpi_walk_resource_callback) (struct acpi_resource * resource,
					   void *context);

acpi_status
acpi_get_vendor_resource(acpi_handle device,
			 char *name,
			 struct acpi_vendor_uuid *uuid,
			 struct acpi_buffer *ret_buffer);

acpi_status
acpi_get_current_resources(acpi_handle device, struct acpi_buffer *ret_buffer);

#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_get_possible_resources(acpi_handle device, struct acpi_buffer *ret_buffer);
#endif

acpi_status
acpi_get_event_resources(acpi_handle device_handle,
			 struct acpi_buffer *ret_buffer);

acpi_status
acpi_walk_resource_buffer(struct acpi_buffer *buffer,
			  acpi_walk_resource_callback user_function,
			  void *context);

acpi_status
acpi_walk_resources(acpi_handle device,
		    char *name,
		    acpi_walk_resource_callback user_function, void *context);

acpi_status
acpi_set_current_resources(acpi_handle device, struct acpi_buffer *in_buffer);

acpi_status
acpi_get_irq_routing_table(acpi_handle device, struct acpi_buffer *ret_buffer);

acpi_status
acpi_resource_to_address64(struct acpi_resource *resource,
			   struct acpi_resource_address64 *out);

acpi_status
acpi_buffer_to_resource(u8 *aml_buffer,
			u16 aml_buffer_length,
			struct acpi_resource **resource_ptr);

/*
 * Hardware (ACPI device) interfaces
 */
acpi_status acpi_reset(void);

acpi_status acpi_read(u64 *value, struct acpi_generic_address *reg);

acpi_status acpi_write(u64 value, struct acpi_generic_address *reg);

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_read_bit_register(u32 register_id,
						       u32 *return_value))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_write_bit_register(u32 register_id,
							u32 value))

/*
 * Sleep/Wake interfaces
 */
acpi_status
acpi_get_sleep_type_data(u8 sleep_state, u8 *slp_typ_a, u8 *slp_typ_b);

acpi_status acpi_enter_sleep_state_prep(u8 sleep_state);

acpi_status acpi_enter_sleep_state(u8 sleep_state);

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enter_sleep_state_s4bios(void))

acpi_status acpi_leave_sleep_state_prep(u8 sleep_state);

acpi_status acpi_leave_sleep_state(u8 sleep_state);

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_set_firmware_waking_vector(u32
								physical_address))
#if ACPI_MACHINE_WIDTH == 64
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_set_firmware_waking_vector64(u64
								  physical_address))
#endif
/*
 * ACPI Timer interfaces
 */
#ifdef ACPI_FUTURE_USAGE
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_get_timer_resolution(u32 *resolution))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_get_timer(u32 *ticks))

ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
				acpi_get_timer_duration(u32 start_ticks,
							u32 end_ticks,
							u32 *time_elapsed))
#endif				/* ACPI_FUTURE_USAGE */

/*
 * Error/Warning output
 */
ACPI_MSG_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(3)
			       void ACPI_INTERNAL_VAR_XFACE
			       acpi_error(const char *module_name,
					  u32 line_number,
					  const char *format, ...))
ACPI_MSG_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(4)
				void ACPI_INTERNAL_VAR_XFACE
				acpi_exception(const char *module_name,
					       u32 line_number,
					       acpi_status status,
					       const char *format, ...))
ACPI_MSG_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(3)
				void ACPI_INTERNAL_VAR_XFACE
				acpi_warning(const char *module_name,
					     u32 line_number,
					     const char *format, ...))
ACPI_MSG_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(3)
				void ACPI_INTERNAL_VAR_XFACE
				acpi_info(const char *module_name,
					  u32 line_number,
					  const char *format, ...))
ACPI_MSG_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(3)
				void ACPI_INTERNAL_VAR_XFACE
				acpi_bios_error(const char *module_name,
						u32 line_number,
						const char *format, ...))
ACPI_MSG_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(3)
				void ACPI_INTERNAL_VAR_XFACE
				acpi_bios_warning(const char *module_name,
						  u32 line_number,
						  const char *format, ...))

/*
 * Debug output
 */
#ifdef ACPI_DEBUG_OUTPUT
ACPI_PRINTF_LIKE(6)
void ACPI_INTERNAL_VAR_XFACE
acpi_debug_print(u32 requested_debug_level,
		 u32 line_number,
		 const char *function_name,
		 const char *module_name,
		 u32 component_id, const char *format, ...);

ACPI_PRINTF_LIKE(6)
void ACPI_INTERNAL_VAR_XFACE
acpi_debug_print_raw(u32 requested_debug_level,
		     u32 line_number,
		     const char *function_name,
		     const char *module_name,
		     u32 component_id, const char *format, ...);
#endif

#endif				/* __ACXFACE_H__ */