ACPICA: Support for custom ACPICA build for ACPI 5 reduced hardware

Add ACPI_REDUCED_HARDWARE flag that removes all hardware-related
code (about 10% code, 5% static data).

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2012-02-14 18:14:27 +08:00 committed by Len Brown
parent d08310fe0d
commit 33620c5419
29 changed files with 520 additions and 309 deletions

View File

@ -51,7 +51,6 @@
*
* Note: The order of these include files is important.
*/
#include "acconfig.h" /* Global configuration constants */
#include "acmacros.h" /* C macros */
#include "aclocal.h" /* Internal data types */
#include "acobject.h" /* ACPI internal object */

View File

@ -111,7 +111,7 @@ acpi_status acpi_db_find_name_in_namespace(char *name_arg);
void acpi_db_set_scope(char *name);
acpi_status acpi_db_sleep(char *object_arg);
ACPI_HW_DEPENDENT_RETURN_OK(acpi_status acpi_db_sleep(char *object_arg))
void acpi_db_find_references(char *object_arg);
@ -119,11 +119,13 @@ void acpi_db_display_locks(void);
void acpi_db_display_resources(char *object_arg);
void acpi_db_display_gpes(void);
ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_db_display_gpes(void))
void acpi_db_check_integrity(void);
void acpi_db_generate_gpe(char *gpe_arg, char *block_arg);
ACPI_HW_DEPENDENT_RETURN_VOID(void
acpi_db_generate_gpe(char *gpe_arg,
char *block_arg))
void acpi_db_check_predefined_names(void);

View File

@ -69,11 +69,10 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node *node,
*/
acpi_status acpi_ev_init_global_lock_handler(void);
acpi_status acpi_ev_acquire_global_lock(u16 timeout);
acpi_status acpi_ev_release_global_lock(void);
acpi_status acpi_ev_remove_global_lock_handler(void);
ACPI_HW_DEPENDENT_RETURN_OK(acpi_status
acpi_ev_acquire_global_lock(u16 timeout))
ACPI_HW_DEPENDENT_RETURN_OK(acpi_status acpi_ev_release_global_lock(void))
acpi_status acpi_ev_remove_global_lock_handler(void);
/*
* evgpe - Low-level GPE support
@ -114,7 +113,9 @@ acpi_ev_initialize_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block,
void *context);
acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block);
ACPI_HW_DEPENDENT_RETURN_OK(acpi_status
acpi_ev_delete_gpe_block(struct acpi_gpe_block_info
*gpe_block))
u32
acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
@ -126,9 +127,10 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
*/
acpi_status acpi_ev_gpe_initialize(void);
void acpi_ev_update_gpes(acpi_owner_id table_owner_id);
ACPI_HW_DEPENDENT_RETURN_VOID(void
acpi_ev_update_gpes(acpi_owner_id table_owner_id))
acpi_status
acpi_status
acpi_ev_match_gpe_method(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
@ -237,6 +239,5 @@ acpi_status acpi_ev_remove_sci_handler(void);
u32 acpi_ev_initialize_sCI(u32 program_sCI);
void acpi_ev_terminate(void);
ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_ev_terminate(void))
#endif /* __ACEVENTS_H__ */

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@ -147,7 +147,7 @@ u8 acpi_gbl_system_awake_and_running;
*/
u8 acpi_gbl_reduced_hardware;
#endif
#endif /* DEFINE_ACPI_GLOBALS */
/* Do not disassemble buffers to resource descriptors */
@ -184,8 +184,12 @@ ACPI_EXTERN u32 acpi_gbl_trace_dbg_layer;
* found in the RSDT/XSDT.
*/
ACPI_EXTERN struct acpi_table_list acpi_gbl_root_table_list;
#if (!ACPI_REDUCED_HARDWARE)
ACPI_EXTERN struct acpi_table_facs *acpi_gbl_FACS;
#endif /* !ACPI_REDUCED_HARDWARE */
/* These addresses are calculated from the FADT Event Block addresses */
ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_status;
@ -397,10 +401,15 @@ ACPI_EXTERN struct acpi_fixed_event_handler
ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head;
ACPI_EXTERN struct acpi_gpe_block_info
*acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS];
#if (!ACPI_REDUCED_HARDWARE)
ACPI_EXTERN u8 acpi_gbl_all_gpes_initialized;
ACPI_EXTERN ACPI_GBL_EVENT_HANDLER acpi_gbl_global_event_handler;
ACPI_EXTERN void *acpi_gbl_global_event_handler_context;
#endif /* !ACPI_REDUCED_HARDWARE */
/*****************************************************************************
*
* Debugger globals

View File

@ -47,7 +47,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evevent")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static acpi_status acpi_ev_fixed_event_initialize(void);
@ -291,3 +291,5 @@ static u32 acpi_ev_fixed_event_dispatch(u32 event)
return ((acpi_gbl_fixed_event_handlers[event].
handler) (acpi_gbl_fixed_event_handlers[event].context));
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -48,7 +48,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evglock")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static u32 acpi_ev_global_lock_handler(void *context);
@ -339,3 +339,5 @@ acpi_status acpi_ev_release_global_lock(void)
acpi_os_release_mutex(acpi_gbl_global_lock_mutex->mutex.os_mutex);
return_ACPI_STATUS(status);
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -48,7 +48,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evgpe")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context);
@ -766,3 +766,5 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
return_UINT32(ACPI_INTERRUPT_HANDLED);
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -48,7 +48,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evgpeblk")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static acpi_status
acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
@ -504,3 +504,5 @@ acpi_ev_initialize_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
return_ACPI_STATUS(AE_OK);
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -48,7 +48,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evgpeinit")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/*
* Note: History of _PRW support in ACPICA
*
@ -440,3 +440,5 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
name, gpe_number));
return_ACPI_STATUS(AE_OK);
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -48,6 +48,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evgpeutil")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/*******************************************************************************
*
* FUNCTION: acpi_ev_walk_gpe_list
@ -374,3 +375,5 @@ acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
return_ACPI_STATUS(AE_OK);
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -270,6 +270,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context)
acpi_ut_delete_generic_state(notify_info);
}
#if (!ACPI_REDUCED_HARDWARE)
/******************************************************************************
*
* FUNCTION: acpi_ev_terminate
@ -338,3 +339,5 @@ void acpi_ev_terminate(void)
}
return_VOID;
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -48,7 +48,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evsci")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static u32 ACPI_SYSTEM_XFACE acpi_ev_sci_xrupt_handler(void *context);
@ -181,3 +181,5 @@ acpi_status acpi_ev_remove_sci_handler(void)
return_ACPI_STATUS(status);
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -51,222 +51,6 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evxface")
/*******************************************************************************
*
* FUNCTION: acpi_install_exception_handler
*
* PARAMETERS: Handler - Pointer to the handler function for the
* event
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function
*
******************************************************************************/
#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_install_exception_handler(acpi_exception_handler handler)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_exception_handler);
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow two handlers. */
if (acpi_gbl_exception_handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
/* Install the handler */
acpi_gbl_exception_handler = handler;
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_exception_handler)
#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*
* FUNCTION: acpi_install_global_event_handler
*
* PARAMETERS: Handler - Pointer to the global event handler function
* Context - Value passed to the handler on each event
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function. The global handler
* is invoked upon each incoming GPE and Fixed Event. It is
* invoked at interrupt level at the time of the event dispatch.
* Can be used to update event counters, etc.
*
******************************************************************************/
acpi_status
acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_global_event_handler);
/* Parameter validation */
if (!handler) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow two handlers. */
if (acpi_gbl_global_event_handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
acpi_gbl_global_event_handler = handler;
acpi_gbl_global_event_handler_context = context;
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_global_event_handler)
/*******************************************************************************
*
* FUNCTION: acpi_install_fixed_event_handler
*
* PARAMETERS: Event - Event type to enable.
* Handler - Pointer to the handler function for the
* event
* Context - Value passed to the handler on each GPE
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function and then enables the
* event.
*
******************************************************************************/
acpi_status
acpi_install_fixed_event_handler(u32 event,
acpi_event_handler handler, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_fixed_event_handler);
/* Parameter validation */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow two handlers. */
if (NULL != acpi_gbl_fixed_event_handlers[event].handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
/* Install the handler before enabling the event */
acpi_gbl_fixed_event_handlers[event].handler = handler;
acpi_gbl_fixed_event_handlers[event].context = context;
status = acpi_clear_event(event);
if (ACPI_SUCCESS(status))
status = acpi_enable_event(event, 0);
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "Could not enable fixed event 0x%X",
event));
/* Remove the handler */
acpi_gbl_fixed_event_handlers[event].handler = NULL;
acpi_gbl_fixed_event_handlers[event].context = NULL;
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Enabled fixed event %X, Handler=%p\n", event,
handler));
}
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_fixed_event_handler)
/*******************************************************************************
*
* FUNCTION: acpi_remove_fixed_event_handler
*
* PARAMETERS: Event - Event type to disable.
* Handler - Address of the handler
*
* RETURN: Status
*
* DESCRIPTION: Disables the event and unregisters the event handler.
*
******************************************************************************/
acpi_status
acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_remove_fixed_event_handler);
/* Parameter validation */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Disable the event before removing the handler */
status = acpi_disable_event(event, 0);
/* Always Remove the handler */
acpi_gbl_fixed_event_handlers[event].handler = NULL;
acpi_gbl_fixed_event_handlers[event].context = NULL;
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO,
"Could not write to fixed event enable register 0x%X",
event));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Disabled fixed event %X\n",
event));
}
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler)
/*******************************************************************************
*
@ -334,6 +118,7 @@ acpi_add_handler_object(struct acpi_object_notify_handler *parent_obj,
return AE_OK;
}
/*******************************************************************************
*
* FUNCTION: acpi_install_notify_handler
@ -703,6 +488,224 @@ acpi_remove_notify_handler(acpi_handle device,
ACPI_EXPORT_SYMBOL(acpi_remove_notify_handler)
/*******************************************************************************
*
* FUNCTION: acpi_install_exception_handler
*
* PARAMETERS: Handler - Pointer to the handler function for the
* event
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function
*
******************************************************************************/
#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_install_exception_handler(acpi_exception_handler handler)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_exception_handler);
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow two handlers. */
if (acpi_gbl_exception_handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
/* Install the handler */
acpi_gbl_exception_handler = handler;
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_exception_handler)
#endif /* ACPI_FUTURE_USAGE */
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_install_global_event_handler
*
* PARAMETERS: Handler - Pointer to the global event handler function
* Context - Value passed to the handler on each event
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function. The global handler
* is invoked upon each incoming GPE and Fixed Event. It is
* invoked at interrupt level at the time of the event dispatch.
* Can be used to update event counters, etc.
*
******************************************************************************/
acpi_status
acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_global_event_handler);
/* Parameter validation */
if (!handler) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow two handlers. */
if (acpi_gbl_global_event_handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
acpi_gbl_global_event_handler = handler;
acpi_gbl_global_event_handler_context = context;
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_global_event_handler)
/*******************************************************************************
*
* FUNCTION: acpi_install_fixed_event_handler
*
* PARAMETERS: Event - Event type to enable.
* Handler - Pointer to the handler function for the
* event
* Context - Value passed to the handler on each GPE
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function and then enables the
* event.
*
******************************************************************************/
acpi_status
acpi_install_fixed_event_handler(u32 event,
acpi_event_handler handler, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_fixed_event_handler);
/* Parameter validation */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow two handlers. */
if (NULL != acpi_gbl_fixed_event_handlers[event].handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
/* Install the handler before enabling the event */
acpi_gbl_fixed_event_handlers[event].handler = handler;
acpi_gbl_fixed_event_handlers[event].context = context;
status = acpi_clear_event(event);
if (ACPI_SUCCESS(status))
status = acpi_enable_event(event, 0);
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "Could not enable fixed event 0x%X",
event));
/* Remove the handler */
acpi_gbl_fixed_event_handlers[event].handler = NULL;
acpi_gbl_fixed_event_handlers[event].context = NULL;
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Enabled fixed event %X, Handler=%p\n", event,
handler));
}
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_fixed_event_handler)
/*******************************************************************************
*
* FUNCTION: acpi_remove_fixed_event_handler
*
* PARAMETERS: Event - Event type to disable.
* Handler - Address of the handler
*
* RETURN: Status
*
* DESCRIPTION: Disables the event and unregisters the event handler.
*
******************************************************************************/
acpi_status
acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_remove_fixed_event_handler);
/* Parameter validation */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Disable the event before removing the handler */
status = acpi_disable_event(event, 0);
/* Always Remove the handler */
acpi_gbl_fixed_event_handlers[event].handler = NULL;
acpi_gbl_fixed_event_handlers[event].context = NULL;
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO,
"Could not write to fixed event enable register 0x%X",
event));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Disabled fixed event %X\n",
event));
}
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler)
/*******************************************************************************
*
* FUNCTION: acpi_install_gpe_handler
@ -984,3 +987,4 @@ acpi_status acpi_release_global_lock(u32 handle)
}
ACPI_EXPORT_SYMBOL(acpi_release_global_lock)
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -49,6 +49,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evxfevnt")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/*******************************************************************************
*
* FUNCTION: acpi_enable
@ -352,3 +353,4 @@ acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status)
}
ACPI_EXPORT_SYMBOL(acpi_get_event_status)
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -50,6 +50,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evxfgpe")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/******************************************************************************
*
* FUNCTION: acpi_update_all_gpes
@ -695,3 +696,4 @@ acpi_get_gpe_device(u32 index, acpi_handle *gpe_device)
}
ACPI_EXPORT_SYMBOL(acpi_get_gpe_device)
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -48,6 +48,7 @@
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwacpi")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/******************************************************************************
*
* FUNCTION: acpi_hw_set_mode
@ -166,3 +167,5 @@ u32 acpi_hw_get_mode(void)
return_UINT32(ACPI_SYS_MODE_LEGACY);
}
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -48,7 +48,7 @@
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwgpe")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static acpi_status
acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
@ -479,3 +479,5 @@ acpi_status acpi_hw_enable_all_wakeup_gpes(void)
status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block, NULL);
return_ACPI_STATUS(status);
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -51,6 +51,7 @@
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwregs")
#if (!ACPI_REDUCED_HARDWARE)
/* Local Prototypes */
static acpi_status
acpi_hw_read_multiple(u32 *value,
@ -62,6 +63,8 @@ acpi_hw_write_multiple(u32 value,
struct acpi_generic_address *register_a,
struct acpi_generic_address *register_b);
#endif /* !ACPI_REDUCED_HARDWARE */
/******************************************************************************
*
* FUNCTION: acpi_hw_validate_register
@ -240,6 +243,7 @@ acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg)
return (status);
}
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_hw_clear_acpi_status
@ -285,7 +289,7 @@ exit:
/*******************************************************************************
*
* FUNCTION: acpi_hw_get_register_bit_mask
* FUNCTION: acpi_hw_get_bit_register_info
*
* PARAMETERS: register_id - Index of ACPI Register to access
*
@ -658,3 +662,5 @@ acpi_hw_write_multiple(u32 value,
return (status);
}
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -197,6 +197,7 @@ void acpi_hw_execute_SST(u32 indicator_id)
}
}
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_hw_legacy_sleep
@ -512,6 +513,7 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state)
return_ACPI_STATUS(status);
}
#endif /* !ACPI_REDUCED_HARDWARE */
/*******************************************************************************
*

View File

@ -49,6 +49,7 @@
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwtimer")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/******************************************************************************
*
* FUNCTION: acpi_get_timer_resolution
@ -187,3 +188,4 @@ acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed)
}
ACPI_EXPORT_SYMBOL(acpi_get_timer_duration)
#endif /* !ACPI_REDUCED_HARDWARE */

View File

@ -286,6 +286,7 @@ acpi_status acpi_write(u64 value, struct acpi_generic_address *reg)
ACPI_EXPORT_SYMBOL(acpi_write)
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_read_bit_register
@ -453,7 +454,7 @@ unlock_and_exit:
}
ACPI_EXPORT_SYMBOL(acpi_write_bit_register)
#endif /* !ACPI_REDUCED_HARDWARE */
/*******************************************************************************
*
* FUNCTION: acpi_get_sleep_type_data

View File

@ -48,6 +48,7 @@
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwxfsleep")
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_set_firmware_waking_vector
@ -189,7 +190,7 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
}
ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios)
#endif /* !ACPI_REDUCED_HARDWARE */
/*******************************************************************************
*
* FUNCTION: acpi_enter_sleep_state_prep
@ -290,6 +291,7 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b));
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
}
#if (!ACPI_REDUCED_HARDWARE)
/* If Hardware Reduced flag is set, must use the extended sleep registers */
@ -301,6 +303,11 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
status = acpi_hw_legacy_sleep(sleep_state);
}
#else
status = acpi_hw_extended_sleep(sleep_state);
#endif /* !ACPI_REDUCED_HARDWARE */
return_ACPI_STATUS(status);
}
@ -326,6 +333,8 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
ACPI_FUNCTION_TRACE(acpi_leave_sleep_state);
#if (!ACPI_REDUCED_HARDWARE)
/* If Hardware Reduced flag is set, must use the extended sleep registers */
if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) {
@ -335,6 +344,10 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
status = acpi_hw_legacy_wake_prep(sleep_state);
}
#else
status = acpi_hw_extended_wake_prep(sleep_state);
#endif /* !ACPI_REDUCED_HARDWARE */
return_ACPI_STATUS(status);
@ -361,6 +374,8 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state)
ACPI_FUNCTION_TRACE(acpi_leave_sleep_state);
#if (!ACPI_REDUCED_HARDWARE)
/* If Hardware Reduced flag is set, must use the extended sleep registers */
if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) {
@ -371,6 +386,11 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state)
status = acpi_hw_legacy_wake(sleep_state);
}
#else
status = acpi_hw_extended_wake(sleep_state);
#endif /* !ACPI_REDUCED_HARDWARE */
return_ACPI_STATUS(status);
}

View File

@ -118,6 +118,7 @@ acpi_tb_check_xsdt(acpi_physical_address address)
return AE_OK;
}
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_tb_initialize_facs
@ -148,6 +149,7 @@ acpi_status acpi_tb_initialize_facs(void)
&acpi_gbl_FACS));
return status;
}
#endif /* !ACPI_REDUCED_HARDWARE */
/*******************************************************************************
*

View File

@ -140,6 +140,7 @@ const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
{NULL, ACPI_TYPE_ANY, NULL}
};
#if (!ACPI_REDUCED_HARDWARE)
/******************************************************************************
*
* Event and Hardware globals
@ -236,6 +237,7 @@ struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] =
ACPI_BITMASK_RT_CLOCK_STATUS,
ACPI_BITMASK_RT_CLOCK_ENABLE},
};
#endif /* !ACPI_REDUCED_HARDWARE */
/*******************************************************************************
*
@ -286,6 +288,8 @@ acpi_status acpi_ut_init_globals(void)
acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
#if (!ACPI_REDUCED_HARDWARE)
/* GPE support */
acpi_gbl_gpe_xrupt_list_head = NULL;
@ -294,6 +298,10 @@ acpi_status acpi_ut_init_globals(void)
acpi_current_gpe_count = 0;
acpi_gbl_all_gpes_initialized = FALSE;
acpi_gbl_global_event_handler = NULL;
#endif /* !ACPI_REDUCED_HARDWARE */
/* Global handlers */
acpi_gbl_system_notify.handler = NULL;
@ -302,7 +310,6 @@ acpi_status acpi_ut_init_globals(void)
acpi_gbl_init_handler = NULL;
acpi_gbl_table_handler = NULL;
acpi_gbl_interface_handler = NULL;
acpi_gbl_global_event_handler = NULL;
/* Global Lock support */

View File

@ -53,27 +53,35 @@ ACPI_MODULE_NAME("utinit")
/* Local prototypes */
static void acpi_ut_terminate(void);
#if (!ACPI_REDUCED_HARDWARE)
static void acpi_ut_free_gpe_lists(void);
#else
#define acpi_ut_free_gpe_lists()
#endif /* !ACPI_REDUCED_HARDWARE */
#if (!ACPI_REDUCED_HARDWARE)
/******************************************************************************
*
* FUNCTION: acpi_ut_terminate
* FUNCTION: acpi_ut_free_gpe_lists
*
* PARAMETERS: none
*
* RETURN: none
*
* DESCRIPTION: Free global memory
* DESCRIPTION: Free global GPE lists
*
******************************************************************************/
static void acpi_ut_terminate(void)
static void acpi_ut_free_gpe_lists(void)
{
struct acpi_gpe_block_info *gpe_block;
struct acpi_gpe_block_info *next_gpe_block;
struct acpi_gpe_xrupt_info *gpe_xrupt_info;
struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
ACPI_FUNCTION_TRACE(ut_terminate);
/* Free global GPE blocks and related info structures */
gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
@ -91,7 +99,26 @@ static void acpi_ut_terminate(void)
ACPI_FREE(gpe_xrupt_info);
gpe_xrupt_info = next_gpe_xrupt_info;
}
}
#endif /* !ACPI_REDUCED_HARDWARE */
/******************************************************************************
*
* FUNCTION: acpi_ut_terminate
*
* PARAMETERS: none
*
* RETURN: none
*
* DESCRIPTION: Free global memory
*
******************************************************************************/
static void acpi_ut_terminate(void)
{
ACPI_FUNCTION_TRACE(ut_terminate);
acpi_ut_free_gpe_lists();
acpi_ut_delete_address_lists();
return_VOID;
}

View File

@ -145,6 +145,8 @@ acpi_status acpi_enable_subsystem(u32 flags)
ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
#if (!ACPI_REDUCED_HARDWARE)
/* Enable ACPI mode */
if (!(flags & ACPI_NO_ACPI_ENABLE)) {
@ -169,6 +171,7 @@ acpi_status acpi_enable_subsystem(u32 flags)
ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
return_ACPI_STATUS(status);
}
#endif /* !ACPI_REDUCED_HARDWARE */
/*
* Install the default op_region handlers. These are installed unless
@ -184,7 +187,7 @@ acpi_status acpi_enable_subsystem(u32 flags)
return_ACPI_STATUS(status);
}
}
#if (!ACPI_REDUCED_HARDWARE)
/*
* Initialize ACPI Event handling (Fixed and General Purpose)
*
@ -220,6 +223,7 @@ acpi_status acpi_enable_subsystem(u32 flags)
return_ACPI_STATUS(status);
}
}
#endif /* !ACPI_REDUCED_HARDWARE */
return_ACPI_STATUS(status);
}

View File

@ -85,6 +85,23 @@
*/
#define ACPI_CHECKSUM_ABORT FALSE
/*
* Generate a version of ACPICA that only supports "reduced hardware"
* platforms (as defined in ACPI 5.0). Set to TRUE to generate a specialized
* version of ACPICA that ONLY supports the ACPI 5.0 "reduced hardware"
* model. In other words, no ACPI hardware is supported.
*
* If TRUE, this means no support for the following:
* PM Event and Control registers
* SCI interrupt (and handler)
* Fixed Events
* General Purpose Events (GPEs)
* Global Lock
* ACPI PM timer
* FACS table (Waking vectors and Global Lock)
*/
#define ACPI_REDUCED_HARDWARE FALSE
/******************************************************************************
*
* Subsystem Constants

View File

@ -89,8 +89,9 @@
#define AE_SAME_HANDLER (acpi_status) (0x0019 | AE_CODE_ENVIRONMENTAL)
#define AE_NO_HANDLER (acpi_status) (0x001A | AE_CODE_ENVIRONMENTAL)
#define AE_OWNER_ID_LIMIT (acpi_status) (0x001B | AE_CODE_ENVIRONMENTAL)
#define AE_NOT_CONFIGURED (acpi_status) (0x001C | AE_CODE_ENVIRONMENTAL)
#define AE_CODE_ENV_MAX 0x001B
#define AE_CODE_ENV_MAX 0x001C
/*
* Programmer exceptions
@ -213,7 +214,8 @@ char const *acpi_gbl_exception_names_env[] = {
"AE_ABORT_METHOD",
"AE_SAME_HANDLER",
"AE_NO_HANDLER",
"AE_OWNER_ID_LIMIT"
"AE_OWNER_ID_LIMIT",
"AE_NOT_CONFIGURED"
};
char const *acpi_gbl_exception_names_pgm[] = {

View File

@ -49,6 +49,7 @@
#define ACPI_CA_VERSION 0x20120111
#include "acconfig.h"
#include "actypes.h"
#include "actbl.h"
@ -71,6 +72,33 @@ extern u8 acpi_gbl_copy_dsdt_locally;
extern u8 acpi_gbl_truncate_io_addresses;
extern u8 acpi_gbl_disable_auto_repair;
/*
* 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 {}
#endif /* !ACPI_REDUCED_HARDWARE */
extern u32 acpi_current_gpe_count;
extern struct acpi_table_fadt acpi_gbl_FADT;
extern u8 acpi_gbl_system_awake_and_running;
@ -96,9 +124,8 @@ acpi_status acpi_terminate(void);
acpi_status acpi_subsystem_status(void);
#endif
acpi_status acpi_enable(void);
acpi_status acpi_disable(void);
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_get_system_info(struct acpi_buffer *ret_buffer);
@ -235,17 +262,34 @@ acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle);
acpi_status
acpi_install_initialization_handler(acpi_init_handler handler, u32 function);
acpi_status
acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler,
void *context);
acpi_status
acpi_install_fixed_event_handler(u32 acpi_event,
acpi_event_handler handler, void *context);
acpi_status
acpi_remove_fixed_event_handler(u32 acpi_event, acpi_event_handler handler);
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,
@ -266,15 +310,6 @@ acpi_remove_address_space_handler(acpi_handle device,
acpi_adr_space_type space_id,
acpi_adr_space_handler handler);
acpi_status
acpi_install_gpe_handler(acpi_handle gpe_device,
u32 gpe_number,
u32 type, acpi_gpe_handler address, void *context);
acpi_status
acpi_remove_gpe_handler(acpi_handle gpe_device,
u32 gpe_number, acpi_gpe_handler address);
#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_install_exception_handler(acpi_exception_handler handler);
#endif
@ -284,9 +319,11 @@ acpi_status acpi_install_interface_handler(acpi_interface_handler handler);
/*
* Global Lock interfaces
*/
acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle);
acpi_status acpi_release_global_lock(u32 handle);
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
@ -299,47 +336,75 @@ acpi_status acpi_release_mutex(acpi_handle handle, acpi_string pathname);
/*
* Fixed Event interfaces
*/
acpi_status acpi_enable_event(u32 event, u32 flags);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_enable_event(u32 event, u32 flags))
acpi_status acpi_disable_event(u32 event, u32 flags);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_disable_event(u32 event, u32 flags))
acpi_status acpi_clear_event(u32 event);
acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status);
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_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_update_all_gpes(void))
acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_enable_gpe(acpi_handle gpe_device,
u32 gpe_number))
acpi_status acpi_clear_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_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_clear_gpe(acpi_handle gpe_device,
u32 gpe_number))
acpi_status acpi_set_gpe_wake_mask(acpi_handle gpe_device, u32 gpe_number, u8 action);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_set_gpe(acpi_handle gpe_device,
u32 gpe_number, u8 action))
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_finish_gpe(acpi_handle gpe_device,
u32 gpe_number))
acpi_status acpi_disable_all_gpes(void);
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_status acpi_enable_all_runtime_gpes(void);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable_all_gpes(void))
acpi_status acpi_get_gpe_device(u32 gpe_index, acpi_handle *gpe_device);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void))
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_get_gpe_device(u32 gpe_index,
acpi_handle * gpe_device))
acpi_status acpi_remove_gpe_block(acpi_handle gpe_device);
acpi_status acpi_update_all_gpes(void);
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
@ -391,20 +456,31 @@ acpi_buffer_to_resource(u8 *aml_buffer,
*/
acpi_status acpi_reset(void);
acpi_status acpi_read_bit_register(u32 register_id, u32 *return_value);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_read_bit_register(u32 register_id,
u32 *return_value))
acpi_status acpi_write_bit_register(u32 register_id, u32 value);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_write_bit_register(u32 register_id,
u32 value))
acpi_status acpi_set_firmware_waking_vector(u32 physical_address);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_set_firmware_waking_vector(u32
physical_address))
#if ACPI_MACHINE_WIDTH == 64
acpi_status acpi_set_firmware_waking_vector64(u64 physical_address);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_set_firmware_waking_vector64(u64
physical_address))
#endif
acpi_status acpi_read(u64 *value, struct acpi_generic_address *reg);
acpi_status acpi_write(u64 value, struct acpi_generic_address *reg);
/*
* Sleep/Wake interfaces
*/
acpi_status
acpi_get_sleep_type_data(u8 sleep_state, u8 * slp_typ_a, u8 * slp_typ_b);
@ -412,7 +488,7 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state);
acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state);
acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void))
acpi_status acpi_leave_sleep_state_prep(u8 sleep_state);
@ -422,12 +498,15 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state);
* ACPI Timer interfaces
*/
#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_get_timer_resolution(u32 *resolution);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_get_timer_resolution(u32 *resolution))
acpi_status acpi_get_timer(u32 *ticks);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_get_timer(u32 *ticks))
acpi_status
acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 *time_elapsed);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_get_timer_duration(u32 start_ticks,
u32 end_ticks,
u32 *time_elapsed))
#endif /* ACPI_FUTURE_USAGE */
/*