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ACPICA: Global event handler 

The global event handler is called whenever a general purpose
or fixed ACPI event occurs.

Also update Linux OSL to collect events counter with
global event handler.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Lin Ming 2010-12-13 13:39:26 +08:00 committed by Len Brown
parent bba63a296f
commit a0fcdb237f
8 changed files with 104 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/acpi/acpica/acglobal.h
View File

@ -146,6 +146,9 @@ u8 acpi_gbl_system_awake_and_running;
extern u32 acpi_gbl_nesting_level;
ACPI_EXTERN u32 acpi_gpe_count;
ACPI_EXTERN u32 acpi_fixed_event_count[ACPI_NUM_FIXED_EVENTS];
/* Support for dynamic control method tracing mechanism */
ACPI_EXTERN u32 acpi_gbl_original_dbg_level;
@ -371,6 +374,8 @@ 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];
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;
/*****************************************************************************
*

12
drivers/acpi/acpica/evevent.c
View File

@ -217,9 +217,17 @@ u32 acpi_ev_fixed_event_detect(void)
status_bit_mask)
&& (fixed_enable & acpi_gbl_fixed_event_info[i].
enable_bit_mask)) {
/*
* Found an active (signalled) event. Invoke global event
* handler if present.
*/
acpi_fixed_event_count[i]++;
if (acpi_gbl_global_event_handler) {
acpi_gbl_global_event_handler
(ACPI_EVENT_TYPE_FIXED, NULL, i,
acpi_gbl_global_event_handler_context);
}
/* Found an active (signalled) event */
acpi_os_fixed_event_count(i);
int_status |= acpi_ev_fixed_event_dispatch(i);
}
}

9
drivers/acpi/acpica/evgpe.c
View File

@ -642,7 +642,14 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
acpi_os_gpe_count(gpe_number);
/* Invoke global event handler if present */
acpi_gpe_count++;
if (acpi_gbl_global_event_handler) {
acpi_gbl_global_event_handler(ACPI_EVENT_TYPE_GPE, gpe_device,
gpe_number,
acpi_gbl_global_event_handler_context);
}
/*
* If edge-triggered, clear the GPE status bit now. Note that

51
drivers/acpi/acpica/evxface.c
View File

@ -92,6 +92,57 @@ acpi_status acpi_install_exception_handler(acpi_exception_handler handler)
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

1
drivers/acpi/acpica/utglobal.c
View File

@ -778,6 +778,7 @@ 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 */

19
drivers/acpi/sysfs.c
View File

@ -438,7 +438,7 @@ static void delete_gpe_attr_array(void)
return;
}
void acpi_os_gpe_count(u32 gpe_number)
static void gpe_count(u32 gpe_number)
{
acpi_gpe_count++;
@ -454,7 +454,7 @@ void acpi_os_gpe_count(u32 gpe_number)
return;
}
void acpi_os_fixed_event_count(u32 event_number)
static void fixed_event_count(u32 event_number)
{
if (!all_counters)
return;
@ -468,6 +468,16 @@ void acpi_os_fixed_event_count(u32 event_number)
return;
}
static void acpi_gbl_event_handler(u32 event_type, acpi_handle device,
u32 event_number, void *context)
{
if (event_type == ACPI_EVENT_TYPE_GPE)
gpe_count(event_number);
if (event_type == ACPI_EVENT_TYPE_FIXED)
fixed_event_count(event_number);
}
static int get_status(u32 index, acpi_event_status *status,
acpi_handle *handle)
{
@ -601,6 +611,7 @@ end:
void acpi_irq_stats_init(void)
{
acpi_status status;
int i;
if (all_counters)
@ -619,6 +630,10 @@ void acpi_irq_stats_init(void)
if (all_counters == NULL)
goto fail;
status = acpi_install_global_event_handler(acpi_gbl_event_handler, NULL);
if (ACPI_FAILURE(status))
goto fail;
counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
GFP_KERNEL);
if (counter_attrs == NULL)

4
include/acpi/acpixf.h
View File

@ -228,6 +228,10 @@ 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);

8
include/acpi/actypes.h
View File

@ -895,6 +895,14 @@ typedef void
/*
* Various handlers and callback procedures
*/
typedef
void (*ACPI_GBL_EVENT_HANDLER) (u32 event_type,
acpi_handle device,
u32 event_number, void *context);
#define ACPI_EVENT_TYPE_GPE 0
#define ACPI_EVENT_TYPE_FIXED 1
typedef u32(*acpi_event_handler) (void *context);
typedef