示例#1
0
文件: evgpe.c 项目: AllenDou/linux
/*******************************************************************************
 *
 * FUNCTION:    acpi_ev_enable_gpe
 *
 * PARAMETERS:  gpe_event_info  - GPE to enable
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Clear a GPE of stale events and enable it.
 *
 ******************************************************************************/
acpi_status
acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(ev_enable_gpe);

	/*
	 * We will only allow a GPE to be enabled if it has either an associated
	 * method (_Lxx/_Exx) or a handler, or is using the implicit notify
	 * feature. Otherwise, the GPE will be immediately disabled by
	 * acpi_ev_gpe_dispatch the first time it fires.
	 */
	if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
	    ACPI_GPE_DISPATCH_NONE) {
		return_ACPI_STATUS(AE_NO_HANDLER);
	}

	/* Clear the GPE (of stale events) */
	status = acpi_hw_clear_gpe(gpe_event_info);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Enable the requested GPE */
	status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE);

	return_ACPI_STATUS(status);
}
示例#2
0
/*******************************************************************************
 *
 * FUNCTION:    acpi_clear_gpe
 *
 * PARAMETERS:  gpe_device      - Parent GPE Device
 *              gpe_number      - GPE level within the GPE block
 *              Flags           - Called from an ISR or not
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Clear an ACPI event (general purpose)
 *
 ******************************************************************************/
acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
{
	acpi_status status = AE_OK;
	struct acpi_gpe_event_info *gpe_event_info;

	ACPI_FUNCTION_TRACE(acpi_clear_gpe);

	/* Use semaphore lock if not executing at interrupt level */

	if (flags & ACPI_NOT_ISR) {
		status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
		if (ACPI_FAILURE(status)) {
			return_ACPI_STATUS(status);
		}
	}

	/* Ensure that we have a valid GPE number */

	gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
	if (!gpe_event_info) {
		status = AE_BAD_PARAMETER;
		goto unlock_and_exit;
	}

	status = acpi_hw_clear_gpe(gpe_event_info);

      unlock_and_exit:
	if (flags & ACPI_NOT_ISR) {
		(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
	}
	return_ACPI_STATUS(status);
}
示例#3
0
acpi_status
acpi_ev_enable_gpe (
	struct acpi_gpe_event_info      *gpe_event_info,
	u8                              write_to_hardware)
{
	acpi_status                     status;


	ACPI_FUNCTION_TRACE ("ev_enable_gpe");


	/* Make sure HW enable masks are updated */

	status = acpi_ev_update_gpe_enable_masks (gpe_event_info, ACPI_GPE_ENABLE);
	if (ACPI_FAILURE (status)) {
		return_ACPI_STATUS (status);
	}

	/* Mark wake-enabled or HW enable, or both */

	switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
	case ACPI_GPE_TYPE_WAKE:

		ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
		break;

	case ACPI_GPE_TYPE_WAKE_RUN:

		ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);

		/*lint -fallthrough */

	case ACPI_GPE_TYPE_RUNTIME:

		ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);

		if (write_to_hardware) {
			/* Clear the GPE (of stale events), then enable it */

			status = acpi_hw_clear_gpe (gpe_event_info);
			if (ACPI_FAILURE (status)) {
				return_ACPI_STATUS (status);
			}

			/* Enable the requested runtime GPE */

			status = acpi_hw_write_gpe_enable_reg (gpe_event_info);
		}
		break;

	default:
		return_ACPI_STATUS (AE_BAD_PARAMETER);
	}

	return_ACPI_STATUS (AE_OK);
}
示例#4
0
acpi_status
acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info,
		   u8 write_to_hardware)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(ev_enable_gpe);

	

	status =
	    acpi_ev_update_gpe_enable_masks(gpe_event_info, ACPI_GPE_ENABLE);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	

	switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
	case ACPI_GPE_TYPE_WAKE:

		ACPI_SET_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
		break;

	case ACPI_GPE_TYPE_WAKE_RUN:

		ACPI_SET_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);

		

	case ACPI_GPE_TYPE_RUNTIME:

		ACPI_SET_BIT(gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);

		if (write_to_hardware) {

			

			status = acpi_hw_clear_gpe(gpe_event_info);
			if (ACPI_FAILURE(status)) {
				return_ACPI_STATUS(status);
			}

			

			status = acpi_hw_write_gpe_enable_reg(gpe_event_info);
		}
		break;

	default:
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	return_ACPI_STATUS(AE_OK);
}
示例#5
0
acpi_status
acpi_install_gpe_handler (
	u32                     gpe_number,
	u32                     type,
	acpi_gpe_handler        handler,
	void                    *context)
{
	acpi_status             status = AE_OK;


	FUNCTION_TRACE ("Acpi_install_gpe_handler");


	/* Parameter validation */

	if (!handler || (gpe_number > ACPI_GPE_MAX)) {
		return_ACPI_STATUS (AE_BAD_PARAMETER);
	}

	/* Ensure that we have a valid GPE number */

	if (acpi_gbl_gpe_valid[gpe_number] == ACPI_GPE_INVALID) {
		return_ACPI_STATUS (AE_BAD_PARAMETER);
	}

	acpi_ut_acquire_mutex (ACPI_MTX_EVENTS);

	/* Make sure that there isn't a handler there already */

	if (acpi_gbl_gpe_info[gpe_number].handler) {
		status = AE_EXIST;
		goto cleanup;
	}

	/* Install the handler */

	acpi_gbl_gpe_info[gpe_number].handler = handler;
	acpi_gbl_gpe_info[gpe_number].context = context;
	acpi_gbl_gpe_info[gpe_number].type = (u8) type;

	/* Clear the GPE (of stale events), the enable it */

	acpi_hw_clear_gpe (gpe_number);
	acpi_hw_enable_gpe (gpe_number);


cleanup:
	acpi_ut_release_mutex (ACPI_MTX_EVENTS);
	return_ACPI_STATUS (status);
}
示例#6
0
static void acpi_ev_asynch_enable_gpe(void *context)
{
	struct acpi_gpe_event_info *gpe_event_info = context;
	acpi_status status;
	if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
	    ACPI_GPE_LEVEL_TRIGGERED) {
		
		status = acpi_hw_clear_gpe(gpe_event_info);
		if (ACPI_FAILURE(status)) {
			return_VOID;
		}
	}

	
	(void)acpi_hw_write_gpe_enable_reg(gpe_event_info);
	return_VOID;
}
示例#7
0
文件: evgpe.c 项目: 0-T-0/ps4-linux
acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(ev_enable_gpe);

	/* Clear the GPE (of stale events) */

	status = acpi_hw_clear_gpe(gpe_event_info);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Enable the requested GPE */

	status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE);
	return_ACPI_STATUS(status);
}
示例#8
0
static void
acpi_ev_asynch_execute_gpe_method (
	void                    *context)
{
	unsigned long           gpe_number = (unsigned long) context;
	acpi_gpe_level_info     gpe_info;


	FUNCTION_TRACE ("Ev_asynch_execute_gpe_method");

	/*
	 * Take a snapshot of the GPE info for this level
	 */
	acpi_ut_acquire_mutex (ACPI_MTX_EVENTS);
	gpe_info = acpi_gbl_gpe_info [gpe_number];
	acpi_ut_release_mutex (ACPI_MTX_EVENTS);

	/*
	 * Method Handler (_Lxx, _Exx):
	 * ----------------------------
	 * Evaluate the _Lxx/_Exx control method that corresponds to this GPE.
	 */
	if (gpe_info.method_handle) {
		acpi_ns_evaluate_by_handle (gpe_info.method_handle, NULL, NULL);
	}

	/*
	 * Level-Triggered?
	 * ----------------
	 * If level-triggered we clear the GPE status bit after handling the event.
	 */
	if (gpe_info.type & ACPI_EVENT_LEVEL_TRIGGERED) {
		acpi_hw_clear_gpe (gpe_number);
	}

	/*
	 * Enable the GPE.
	 */
	acpi_hw_enable_gpe (gpe_number);

	return_VOID;
}
示例#9
0
static void acpi_ev_asynch_enable_gpe(void *context)
{
    struct acpi_gpe_event_info *gpe_event_info = context;
    acpi_status status;
    if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
            ACPI_GPE_LEVEL_TRIGGERED) {
        /*
         * GPE is level-triggered, we clear the GPE status bit after handling
         * the event.
         */
        status = acpi_hw_clear_gpe(gpe_event_info);
        if (ACPI_FAILURE(status)) {
            return_VOID;
        }
    }

    /* Enable this GPE */
    (void)acpi_hw_write_gpe_enable_reg(gpe_event_info);
    return_VOID;
}
示例#10
0
static void acpi_ev_asynch_enable_gpe(void *context)
{
	struct acpi_gpe_event_info *gpe_event_info = context;
	acpi_status status;
	if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
	    ACPI_GPE_LEVEL_TRIGGERED) {
		/*
		 * GPE is level-triggered, we clear the GPE status bit after handling
		 * the event.
		 */
		status = acpi_hw_clear_gpe(gpe_event_info);
		if (ACPI_FAILURE(status)) {
			return_VOID;
		}
	}

	/*
	 * Enable this GPE, conditionally. This means that the GPE will only be
	 * physically enabled if the enable_for_run bit is set in the event_info
	 */
	(void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_COND_ENABLE);

	return_VOID;
}
示例#11
0
/*******************************************************************************
 *
 * FUNCTION:    acpi_clear_gpe
 *
 * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
 *              gpe_number      - GPE level within the GPE block
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Clear an ACPI event (general purpose)
 *
 ******************************************************************************/
acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number)
{
	acpi_status status = AE_OK;
	struct acpi_gpe_event_info *gpe_event_info;
	acpi_cpu_flags flags;

	ACPI_FUNCTION_TRACE(acpi_clear_gpe);

	flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);

	/* Ensure that we have a valid GPE number */

	gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
	if (!gpe_event_info) {
		status = AE_BAD_PARAMETER;
		goto unlock_and_exit;
	}

	status = acpi_hw_clear_gpe(gpe_event_info);

      unlock_and_exit:
	acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
	return_ACPI_STATUS(status);
}
示例#12
0
文件: evgpe.c 项目: 0-T-0/ps4-linux
acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info * gpe_event_info)
{
	acpi_status status;

	if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
	    ACPI_GPE_LEVEL_TRIGGERED) {
		/*
		 * GPE is level-triggered, we clear the GPE status bit after
		 * handling the event.
		 */
		status = acpi_hw_clear_gpe(gpe_event_info);
		if (ACPI_FAILURE(status)) {
			return (status);
		}
	}

	/*
	 * Enable this GPE, conditionally. This means that the GPE will
	 * only be physically enabled if the enable_mask bit is set
	 * in the event_info.
	 */
	(void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_CONDITIONAL_ENABLE);
	return (AE_OK);
}
示例#13
0
u32
acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
    acpi_status status;

    ACPI_FUNCTION_TRACE(ev_gpe_dispatch);

    acpi_os_gpe_count(gpe_number);

    /*
     * If edge-triggered, clear the GPE status bit now. Note that
     * level-triggered events are cleared after the GPE is serviced.
     */
    if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
            ACPI_GPE_EDGE_TRIGGERED) {
        status = acpi_hw_clear_gpe(gpe_event_info);
        if (ACPI_FAILURE(status)) {
            ACPI_EXCEPTION((AE_INFO, status,
                            "Unable to clear GPE[%2X]",
                            gpe_number));
            return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
        }
    }

    /*
     * Dispatch the GPE to either an installed handler, or the control method
     * associated with this GPE (_Lxx or _Exx). If a handler exists, we invoke
     * it and do not attempt to run the method. If there is neither a handler
     * nor a method, we disable this GPE to prevent further such pointless
     * events from firing.
     */
    switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
    case ACPI_GPE_DISPATCH_HANDLER:

        /*
         * Invoke the installed handler (at interrupt level)
         * Ignore return status for now.
         * TBD: leave GPE disabled on error?
         */
        (void)gpe_event_info->dispatch.handler->address(gpe_event_info->
                dispatch.
                handler->
                context);

        /* It is now safe to clear level-triggered events. */

        if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
                ACPI_GPE_LEVEL_TRIGGERED) {
            status = acpi_hw_clear_gpe(gpe_event_info);
            if (ACPI_FAILURE(status)) {
                ACPI_EXCEPTION((AE_INFO, status,
                                "Unable to clear GPE[%2X]",
                                gpe_number));
                return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
            }
        }
        break;

    case ACPI_GPE_DISPATCH_METHOD:

        /*
         * Disable the GPE, so it doesn't keep firing before the method has a
         * chance to run (it runs asynchronously with interrupts enabled).
         */
        status = acpi_ev_disable_gpe(gpe_event_info);
        if (ACPI_FAILURE(status)) {
            ACPI_EXCEPTION((AE_INFO, status,
                            "Unable to disable GPE[%2X]",
                            gpe_number));
            return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
        }

        /*
         * Execute the method associated with the GPE
         * NOTE: Level-triggered GPEs are cleared after the method completes.
         */
        status = acpi_os_execute(OSL_GPE_HANDLER,
                                 acpi_ev_asynch_execute_gpe_method,
                                 gpe_event_info);
        if (ACPI_FAILURE(status)) {
            ACPI_EXCEPTION((AE_INFO, status,
                            "Unable to queue handler for GPE[%2X] - event disabled",
                            gpe_number));
        }
        break;

    default:

        /* No handler or method to run! */

        ACPI_ERROR((AE_INFO,
                    "No handler or method for GPE[%2X], disabling event",
                    gpe_number));

        /*
         * Disable the GPE. The GPE will remain disabled until the ACPICA
         * Core Subsystem is restarted, or a handler is installed.
         */
        status = acpi_ev_disable_gpe(gpe_event_info);
        if (ACPI_FAILURE(status)) {
            ACPI_EXCEPTION((AE_INFO, status,
                            "Unable to disable GPE[%2X]",
                            gpe_number));
            return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
        }
        break;
    }

    return_UINT32(ACPI_INTERRUPT_HANDLED);
}
示例#14
0
u32
acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(ev_gpe_dispatch);

	acpi_os_gpe_count(gpe_number);

	
	if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
	    ACPI_GPE_EDGE_TRIGGERED) {
		status = acpi_hw_clear_gpe(gpe_event_info);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to clear GPE[%2X]",
					gpe_number));
			return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
		}
	}

	
	switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
	case ACPI_GPE_DISPATCH_HANDLER:

		
		(void)gpe_event_info->dispatch.handler->address(gpe_event_info->
								dispatch.
								handler->
								context);

		

		if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
		    ACPI_GPE_LEVEL_TRIGGERED) {
			status = acpi_hw_clear_gpe(gpe_event_info);
			if (ACPI_FAILURE(status)) {
				ACPI_EXCEPTION((AE_INFO, status,
						"Unable to clear GPE[%2X]",
						gpe_number));
				return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
			}
		}
		break;

	case ACPI_GPE_DISPATCH_METHOD:

		
		status = acpi_ev_disable_gpe(gpe_event_info);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to disable GPE[%2X]",
					gpe_number));
			return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
		}

		
		status = acpi_os_execute(OSL_GPE_HANDLER,
					 acpi_ev_asynch_execute_gpe_method,
					 gpe_event_info);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to queue handler for GPE[%2X] - event disabled",
					gpe_number));
		}
		break;

	default:

		

		ACPI_ERROR((AE_INFO,
			    "No handler or method for GPE[%2X], disabling event",
			    gpe_number));

		
		status = acpi_ev_disable_gpe(gpe_event_info);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to disable GPE[%2X]",
					gpe_number));
			return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
		}
		break;
	}

	return_UINT32(ACPI_INTERRUPT_HANDLED);
}
示例#15
0
static void ACPI_SYSTEM_XFACE
acpi_ev_asynch_execute_gpe_method (
	void                            *context)
{
	struct acpi_gpe_event_info      *gpe_event_info = (void *) context;
	u32                             gpe_number = 0;
	acpi_status                     status;
	struct acpi_gpe_event_info      local_gpe_event_info;


	ACPI_FUNCTION_TRACE ("ev_asynch_execute_gpe_method");


	status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS);
	if (ACPI_FAILURE (status)) {
		return_VOID;
	}

	/* Must revalidate the gpe_number/gpe_block */

	if (!acpi_ev_valid_gpe_event (gpe_event_info)) {
		status = acpi_ut_release_mutex (ACPI_MTX_EVENTS);
		return_VOID;
	}

	/*
	 * Take a snapshot of the GPE info for this level - we copy the
	 * info to prevent a race condition with remove_handler/remove_block.
	 */
	ACPI_MEMCPY (&local_gpe_event_info, gpe_event_info, sizeof (struct acpi_gpe_event_info));

	status = acpi_ut_release_mutex (ACPI_MTX_EVENTS);
	if (ACPI_FAILURE (status)) {
		return_VOID;
	}

	if (local_gpe_event_info.method_node) {
		/*
		 * Invoke the GPE Method (_Lxx, _Exx):
		 * (Evaluate the _Lxx/_Exx control method that corresponds to this GPE.)
		 */
		status = acpi_ns_evaluate_by_handle (local_gpe_event_info.method_node, NULL, NULL);
		if (ACPI_FAILURE (status)) {
			ACPI_REPORT_ERROR (("%s while evaluating method [%4.4s] for GPE[%2X]\n",
				acpi_format_exception (status),
				local_gpe_event_info.method_node->name.ascii, gpe_number));
		}
	}

	if (local_gpe_event_info.flags & ACPI_EVENT_LEVEL_TRIGGERED) {
		/*
		 * GPE is level-triggered, we clear the GPE status bit after handling
		 * the event.
		 */
		status = acpi_hw_clear_gpe (&local_gpe_event_info);
		if (ACPI_FAILURE (status)) {
			return_VOID;
		}
	}

	/* Enable this GPE */

	(void) acpi_hw_enable_gpe (&local_gpe_event_info);
	return_VOID;
}
示例#16
0
u32
acpi_ev_gpe_dispatch (
	struct acpi_gpe_event_info      *gpe_event_info,
	u32                             gpe_number)
{
	acpi_status                     status;


	ACPI_FUNCTION_TRACE ("ev_gpe_dispatch");


	/*
	 * If edge-triggered, clear the GPE status bit now.  Note that
	 * level-triggered events are cleared after the GPE is serviced.
	 */
	if (gpe_event_info->flags & ACPI_EVENT_EDGE_TRIGGERED) {
		status = acpi_hw_clear_gpe (gpe_event_info);
		if (ACPI_FAILURE (status)) {
			ACPI_REPORT_ERROR (("acpi_ev_gpe_dispatch: Unable to clear GPE[%2X]\n",
				gpe_number));
			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
		}
	}

	/*
	 * Dispatch the GPE to either an installed handler, or the control
	 * method associated with this GPE (_Lxx or _Exx).
	 * If a handler exists, we invoke it and do not attempt to run the method.
	 * If there is neither a handler nor a method, we disable the level to
	 * prevent further events from coming in here.
	 */
	if (gpe_event_info->handler) {
		/* Invoke the installed handler (at interrupt level) */

		gpe_event_info->handler (gpe_event_info->context);
	}
	else if (gpe_event_info->method_node) {
		/*
		 * Disable GPE, so it doesn't keep firing before the method has a
		 * chance to run.
		 */
		status = acpi_hw_disable_gpe (gpe_event_info);
		if (ACPI_FAILURE (status)) {
			ACPI_REPORT_ERROR (("acpi_ev_gpe_dispatch: Unable to disable GPE[%2X]\n",
				gpe_number));
			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
		}

		/* Execute the method associated with the GPE. */

		if (ACPI_FAILURE (acpi_os_queue_for_execution (OSD_PRIORITY_GPE,
				 acpi_ev_asynch_execute_gpe_method,
				 gpe_event_info))) {
			ACPI_REPORT_ERROR ((
				"acpi_ev_gpe_dispatch: Unable to queue handler for GPE[%2X], event is disabled\n",
				gpe_number));
		}
	}
	else {
		/* No handler or method to run! */

		ACPI_REPORT_ERROR ((
			"acpi_ev_gpe_dispatch: No handler or method for GPE[%2X], disabling event\n",
			gpe_number));

		/*
		 * Disable the GPE.  The GPE will remain disabled until the ACPI
		 * Core Subsystem is restarted, or the handler is reinstalled.
		 */
		status = acpi_hw_disable_gpe (gpe_event_info);
		if (ACPI_FAILURE (status)) {
			ACPI_REPORT_ERROR (("acpi_ev_gpe_dispatch: Unable to disable GPE[%2X]\n",
				gpe_number));
			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
		}
	}

	/* It is now safe to clear level-triggered events. */

	if (gpe_event_info->flags & ACPI_EVENT_LEVEL_TRIGGERED) {
		status = acpi_hw_clear_gpe (gpe_event_info);
		if (ACPI_FAILURE (status)) {
			ACPI_REPORT_ERROR (("acpi_ev_gpe_dispatch: Unable to clear GPE[%2X]\n",
				gpe_number));
			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
		}
	}

	return_VALUE (ACPI_INTERRUPT_HANDLED);
}
示例#17
0
u32
acpi_ev_gpe_dispatch (
	u32                     gpe_number)
{
	acpi_gpe_level_info     gpe_info;


	FUNCTION_TRACE ("Ev_gpe_dispatch");


	/*
	 * Valid GPE number?
	 */
	if (acpi_gbl_gpe_valid[gpe_number] == ACPI_GPE_INVALID) {
		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid GPE bit [%X].\n", gpe_number));
		return_VALUE (INTERRUPT_NOT_HANDLED);
	}

	/*
	 * Disable the GPE.
	 */
	acpi_hw_disable_gpe (gpe_number);

	gpe_info = acpi_gbl_gpe_info [gpe_number];

	/*
	 * Edge-Triggered?
	 * ---------------
	 * If edge-triggered, clear the GPE status bit now.  Note that
	 * level-triggered events are cleared after the GPE is serviced.
	 */
	if (gpe_info.type & ACPI_EVENT_EDGE_TRIGGERED) {
		acpi_hw_clear_gpe (gpe_number);
	}
		/*
		 * Function Handler (e.g. EC)?
		 */
	if (gpe_info.handler) {
		/* Invoke function handler (at interrupt level). */

		gpe_info.handler (gpe_info.context);

		/* Level-Triggered? */

		if (gpe_info.type & ACPI_EVENT_LEVEL_TRIGGERED) {
			acpi_hw_clear_gpe (gpe_number);
		}

		/* Enable GPE */

		acpi_hw_enable_gpe (gpe_number);
	}

	/*
	 * Method Handler (e.g. _Exx/_Lxx)?
	 */
	else if (gpe_info.method_handle) {
		if (ACPI_FAILURE(acpi_os_queue_for_execution (OSD_PRIORITY_GPE,
			acpi_ev_asynch_execute_gpe_method, (void*) (u64)gpe_number))) {
			/*
			 * Shoudn't occur, but if it does report an error. Note that
			 * the GPE will remain disabled until the ACPI Core Subsystem
			 * is restarted, or the handler is removed/reinstalled.
			 */
			REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to queue handler for GPE bit [%X]\n", gpe_number));
		}
	}

	/*
	 * No Handler? Report an error and leave the GPE disabled.
	 */
	else {
		REPORT_ERROR (("Acpi_ev_gpe_dispatch: No installed handler for GPE [%X]\n", gpe_number));

		/* Level-Triggered? */

		if (gpe_info.type & ACPI_EVENT_LEVEL_TRIGGERED) {
			acpi_hw_clear_gpe (gpe_number);
		}
	}

	return_VALUE (INTERRUPT_HANDLED);
}
示例#18
0
文件: evgpe.c 项目: 0-T-0/ps4-linux
u32
acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
		     struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
	acpi_status status;
	u32 return_value;

	ACPI_FUNCTION_TRACE(ev_gpe_dispatch);

	/*
	 * Always disable the GPE so that it does not keep firing before
	 * any asynchronous activity completes (either from the execution
	 * of a GPE method or an asynchronous GPE handler.)
	 *
	 * If there is no handler or method to run, just disable the
	 * GPE and leave it disabled permanently to prevent further such
	 * pointless events from firing.
	 */
	status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status,
				"Unable to disable GPE %02X", gpe_number));
		return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
	}

	/*
	 * If edge-triggered, clear the GPE status bit now. Note that
	 * level-triggered events are cleared after the GPE is serviced.
	 */
	if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
	    ACPI_GPE_EDGE_TRIGGERED) {
		status = acpi_hw_clear_gpe(gpe_event_info);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to clear GPE %02X",
					gpe_number));
			(void)acpi_hw_low_set_gpe(gpe_event_info,
						  ACPI_GPE_CONDITIONAL_ENABLE);
			return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
		}
	}

	/*
	 * Dispatch the GPE to either an installed handler or the control
	 * method associated with this GPE (_Lxx or _Exx). If a handler
	 * exists, we invoke it and do not attempt to run the method.
	 * If there is neither a handler nor a method, leave the GPE
	 * disabled.
	 */
	switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) {
	case ACPI_GPE_DISPATCH_HANDLER:

		/* Invoke the installed handler (at interrupt level) */

		return_value =
		    gpe_event_info->dispatch.handler->address(gpe_device,
							      gpe_number,
							      gpe_event_info->
							      dispatch.handler->
							      context);

		/* If requested, clear (if level-triggered) and reenable the GPE */

		if (return_value & ACPI_REENABLE_GPE) {
			(void)acpi_ev_finish_gpe(gpe_event_info);
		}
		break;

	case ACPI_GPE_DISPATCH_METHOD:
	case ACPI_GPE_DISPATCH_NOTIFY:
		/*
		 * Execute the method associated with the GPE
		 * NOTE: Level-triggered GPEs are cleared after the method completes.
		 */
		status = acpi_os_execute(OSL_GPE_HANDLER,
					 acpi_ev_asynch_execute_gpe_method,
					 gpe_event_info);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to queue handler for GPE %02X - event disabled",
					gpe_number));
		}
		break;

	default:
		/*
		 * No handler or method to run!
		 * 03/2010: This case should no longer be possible. We will not allow
		 * a GPE to be enabled if it has no handler or method.
		 */
		ACPI_ERROR((AE_INFO,
			    "No handler or method for GPE %02X, disabling event",
			    gpe_number));

		break;
	}

	return_UINT32(ACPI_INTERRUPT_HANDLED);
}
示例#19
0
u32
acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(ev_gpe_dispatch);

	acpi_os_gpe_count(gpe_number);

	/*
	 * If edge-triggered, clear the GPE status bit now. Note that
	 * level-triggered events are cleared after the GPE is serviced.
	 */
	if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
	    ACPI_GPE_EDGE_TRIGGERED) {
		status = acpi_hw_clear_gpe(gpe_event_info);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to clear GPE[0x%2X]",
					gpe_number));
			return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
		}
	}

	/*
	 * Dispatch the GPE to either any installed handler or control
	 * method associated with this GPE (_Lxx or _Exx). We invoke
	 * the method first in case it has side effects that would be
	 * interfered with if the handler has already altered hardware
	 * state. If there is neither a handler nor a method, we
	 * disable this GPE to prevent further such pointless events
	 * from firing.
	 */
	if (gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD) {
		/*
		 * Disable the GPE, so it doesn't keep firing before the method has a
		 * chance to run (it runs asynchronously with interrupts enabled).
		 */
		status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to disable GPE[0x%2X]",
					gpe_number));
			return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
		}

		/*
		 * Execute the method associated with the GPE
		 * NOTE: Level-triggered GPEs are cleared after the method completes.
		 */
		status = acpi_os_execute(OSL_GPE_HANDLER,
					 acpi_ev_asynch_execute_gpe_method,
					 gpe_event_info);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to queue handler for GPE[0x%2X] - event disabled",
					gpe_number));
		}
	}

	if (gpe_event_info->flags & ACPI_GPE_DISPATCH_HANDLER) {
		/*
		 * Invoke the installed handler (at interrupt level)
		 * Ignore return status for now.
		 * TBD: leave GPE disabled on error?
		 */
		(void)gpe_event_info->dispatch.handler->address(gpe_event_info->
								dispatch.
								handler->
								context);

		/* It is now safe to clear level-triggered events. */

		if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
		    ACPI_GPE_LEVEL_TRIGGERED) {
			status = acpi_hw_clear_gpe(gpe_event_info);
			if (ACPI_FAILURE(status)) {
				ACPI_EXCEPTION((AE_INFO, status,
					"Unable to clear GPE[0x%2X]",
						gpe_number));
				return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
			}
		}
	}

	if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)) {
		/*
		 * No handler or method to run!
		 * 03/2010: This case should no longer be possible. We will not allow
		 * a GPE to be enabled if it has no handler or method.
		 */
		ACPI_ERROR((AE_INFO,
			    "No handler or method for GPE[0x%2X], disabling event",
			    gpe_number));

		/*
		 * Disable the GPE. The GPE will remain disabled a handler
		 * is installed or ACPICA is restarted.
		 */
		status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"Unable to disable GPE[0x%2X]",
					gpe_number));
			return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
		}
	}

	return_UINT32(ACPI_INTERRUPT_HANDLED);
}