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Commit a0fcdb23 authored by Lin Ming's avatar Lin Ming Committed by Len Brown
Browse files

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: default avatarLin Ming <ming.m.lin@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent bba63a29

drivers/acpi/acpica/acglobal.h

+5 −0
Original line number Diff line number Diff line
@@ -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;



/*****************************************************************************

 *

drivers/acpi/acpica/evevent.c

+10 −2
Original line number Diff line number Diff line
@@ -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);

		}

	}

drivers/acpi/acpica/evgpe.c

+8 −1
Original line number Diff line number Diff line
@@ -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

drivers/acpi/acpica/evxface.c

+51 −0
Original line number Diff line number Diff line
@@ -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

drivers/acpi/acpica/utglobal.c

+1 −0
Original line number Diff line number Diff line
@@ -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 */