Beispiel #1
0
acpi_status
acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
			     u32 notify_value)
{
	union acpi_operand_object *obj_desc;
	union acpi_operand_object *handler_obj = NULL;
	union acpi_generic_state *notify_info;
	acpi_status status = AE_OK;

	ACPI_FUNCTION_NAME(ev_queue_notify_request);

	/*
	 * For value 3 (Ejection Request), some device method may need to be run.
	 * For value 2 (Device Wake) if _PRW exists, the _PS0 method may need
	 *   to be run.
	 * For value 0x80 (Status Change) on the power button or sleep button,
	 *   initiate soft-off or sleep operation?
	 */
	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
			  "Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
			  acpi_ut_get_node_name(node), node, notify_value,
			  acpi_ut_get_notify_name(notify_value)));

	/* Get the notify object attached to the NS Node */

	obj_desc = acpi_ns_get_attached_object(node);
	if (obj_desc) {

		/* We have the notify object, Get the right handler */

		switch (node->type) {

			/* Notify allowed only on these types */

		case ACPI_TYPE_DEVICE:
		case ACPI_TYPE_THERMAL:
		case ACPI_TYPE_PROCESSOR:

			if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
				handler_obj =
				    obj_desc->common_notify.system_notify;
			} else {
				handler_obj =
				    obj_desc->common_notify.device_notify;
			}
			break;

		default:

			/* All other types are not supported */

			return (AE_TYPE);
		}
	}

	/*
	 * If there is any handler to run, schedule the dispatcher.
	 * Check for:
	 * 1) Global system notify handler
	 * 2) Global device notify handler
	 * 3) Per-device notify handler
	 */
	if ((acpi_gbl_system_notify.handler &&
	     (notify_value <= ACPI_MAX_SYS_NOTIFY)) ||
	    (acpi_gbl_device_notify.handler &&
	     (notify_value > ACPI_MAX_SYS_NOTIFY)) || handler_obj) {
		notify_info = acpi_ut_create_generic_state();
		if (!notify_info) {
			return (AE_NO_MEMORY);
		}

		if (!handler_obj) {
			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
					  "Executing system notify handler for Notify (%4.4s, %X) "
					  "node %p\n",
					  acpi_ut_get_node_name(node),
					  notify_value, node));
		}

		notify_info->common.descriptor_type =
		    ACPI_DESC_TYPE_STATE_NOTIFY;
		notify_info->notify.node = node;
		notify_info->notify.value = (u16) notify_value;
		notify_info->notify.handler_obj = handler_obj;

		status =
		    acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_notify_dispatch,
				    notify_info);
		if (ACPI_FAILURE(status)) {
			acpi_ut_delete_generic_state(notify_info);
		}
	} else {
		/* There is no notify handler (per-device or system) for this device */

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "No notify handler for Notify (%4.4s, %X) node %p\n",
				  acpi_ut_get_node_name(node), notify_value,
				  node));
	}

	return (status);
}
Beispiel #2
0
acpi_status
acpi_ev_queue_notify_request(struct acpi_namespace_node *node, u32 notify_value)
{
	union acpi_operand_object *obj_desc;
	union acpi_operand_object *handler_list_head = NULL;
	union acpi_generic_state *info;
	u8 handler_list_id = 0;
	acpi_status status = AE_OK;

	ACPI_FUNCTION_NAME(ev_queue_notify_request);

	/* Are Notifies allowed on this object? */

	if (!acpi_ev_is_notify_object(node)) {
		return (AE_TYPE);
	}

	/* Get the correct notify list type (System or Device) */

	if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
		handler_list_id = ACPI_SYSTEM_HANDLER_LIST;
	} else {
		handler_list_id = ACPI_DEVICE_HANDLER_LIST;
	}

	/* Get the notify object attached to the namespace Node */

	obj_desc = acpi_ns_get_attached_object(node);
	if (obj_desc) {

		/* We have an attached object, Get the correct handler list */

		handler_list_head =
		    obj_desc->common_notify.notify_list[handler_list_id];
	}

	/*
	 * If there is no notify handler (Global or Local)
	 * for this object, just ignore the notify
	 */
	if (!acpi_gbl_global_notify[handler_list_id].handler
	    && !handler_list_head) {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "No notify handler for Notify, ignoring (%4.4s, %X) node %p\n",
				  acpi_ut_get_node_name(node), notify_value,
				  node));

		return (AE_OK);
	}

	/* Setup notify info and schedule the notify dispatcher */

	info = acpi_ut_create_generic_state();
	if (!info) {
		return (AE_NO_MEMORY);
	}

	info->common.descriptor_type = ACPI_DESC_TYPE_STATE_NOTIFY;

	info->notify.node = node;
	info->notify.value = (u16)notify_value;
	info->notify.handler_list_id = handler_list_id;
	info->notify.handler_list_head = handler_list_head;
	info->notify.global = &acpi_gbl_global_notify[handler_list_id];

	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
			  "Dispatching Notify on [%4.4s] (%s) Value 0x%2.2X (%s) Node %p\n",
			  acpi_ut_get_node_name(node),
			  acpi_ut_get_type_name(node->type), notify_value,
			  acpi_ut_get_notify_name(notify_value, ACPI_TYPE_ANY),
			  node));

	status = acpi_os_execute(OSL_NOTIFY_HANDLER,
				 acpi_ev_notify_dispatch, info);
	if (ACPI_FAILURE(status)) {
		acpi_ut_delete_generic_state(info);
	}

	return (status);
}