void scic_cb_port_bc_change_primitive_recieved(
SCI_CONTROLLER_HANDLE_T controller,
SCI_PORT_HANDLE_T port,
SCI_PHY_HANDLE_T phy
)
{
SCIF_SAS_DOMAIN_T * fw_domain = (SCIF_SAS_DOMAIN_T*)
sci_object_get_association(port);
SCIF_SAS_CONTROLLER_T * fw_controller = (SCIF_SAS_CONTROLLER_T *)
sci_object_get_association(controller);
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_domain),
SCIF_LOG_OBJECT_DOMAIN | SCIF_LOG_OBJECT_DOMAIN_DISCOVERY,
"scic_cb_port_bc_change_primitive_recieved(0x%x, 0x%x, 0x%x) enter\n",
controller, port, phy
));
if (fw_domain->broadcast_change_count == 0)
{ // Enable the BCN detection only if the bcn_count is zero. If bcn_count is
// not zero at this time, we won't enable BCN detection since all non-zero
// BCN_count means same to us. Furthermore, we avoid BCN storm by not
// always enabling the BCN_detection.
scic_port_enable_broadcast_change_notification(fw_domain->core_object);
}
fw_domain->broadcast_change_count++;
//if there is smp device on this domain that is in the middle of discover
//process or smp target reset, don't notify the driver layer.
if( ! scif_sas_domain_is_in_smp_activity(fw_domain) )
// Notify the user that there is, potentially, a change to the domain.
scif_cb_domain_change_notification(fw_controller, fw_domain);
}
/**
* @brief This method implements the actions taken when entering the
* READY state. If the transition into this state came from:
* - the STARTING state, then alert the user via a
* scif_cb_domain_change_notification() that the domain
* has at least 1 device ready for discovery.
* - the DISCOVERING state, then alert the user that
* discovery is complete via the
* scif_cb_domain_discovery_complete() notification that
* discovery is finished.
*
* @param[in] object This parameter specifies the base object for which
* the state transition is occurring. This is cast into a
* SCIF_SAS_DOMAIN object in the method implementation.
*
* @return none
*/
static
void scif_sas_domain_ready_state_enter(
SCI_BASE_OBJECT_T * object
)
{
SCIF_SAS_DOMAIN_T * fw_domain = (SCIF_SAS_DOMAIN_T *)object;
SET_STATE_HANDLER(
fw_domain,
scif_sas_domain_state_handler_table,
SCI_BASE_DOMAIN_STATE_READY
);
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_domain),
SCIF_LOG_OBJECT_DOMAIN | SCIF_LOG_OBJECT_DOMAIN_DISCOVERY,
"scif_sas_domain_ready_state_enter(0x%x) enter\n",
fw_domain
));
if (fw_domain->parent.state_machine.previous_state_id
== SCI_BASE_DOMAIN_STATE_STARTING)
{
scif_cb_domain_ready(fw_domain->controller, fw_domain);
// Only indicate the domain change notification if the previous
// state was the STARTING state. We issue the notification here
// as opposed to exit of the STARTING state so that the appropriate
// state handlers are in place should the user call
// scif_domain_discover() from scif_cb_domain_change_notification()
scif_cb_domain_change_notification(fw_domain->controller, fw_domain);
}
else if (fw_domain->parent.state_machine.previous_state_id
== SCI_BASE_DOMAIN_STATE_DISCOVERING)
{
//if domain discovery timed out, we will NOT go back to discover even
//the broadcast change count is not zero. Instead we finish the discovery
//back to user. User can check the operation status and decide to
//retry discover all over again.
if (fw_domain->operation.status == SCI_FAILURE_TIMEOUT)
fw_domain->broadcast_change_count = 0;
// Check the broadcast change count to determine if discovery
// is indeed complete.
if (fw_domain->broadcast_change_count == 0)
{
scif_sas_domain_transition_from_discovering_state(fw_domain);
scif_cb_domain_ready(fw_domain->controller, fw_domain);
}
else
{
// The broadcast change count indicates something my have
// changed in the domain, while a discovery was ongoing.
// Thus, we should start discovery over again.
sci_base_state_machine_change_state(
&fw_domain->parent.state_machine, SCI_BASE_DOMAIN_STATE_DISCOVERING
);
}
// Enable the BCN because underneath hardware may disabled any further
// BCN.
scic_port_enable_broadcast_change_notification(fw_domain->core_object);
}
}
