QoS: Quality of Service block
is a feature which can be enabled for each CBA initiator port.
Each initiator can choose to enable the QoS feature in the CBA configuration
file. If an initiator port supports
channel ID, the QoS block provides priority and order ID for each channel,
otherwise all the transactions from that initiator port share the same
priority and order ID value. CAUTION: Since OrderID is used for
ordering purpose in CBASS, changing the order ID when the system is
running can cause system deadlock. Therefore, QoS configuration shall be
part of the initialization steps, if the application wants to change the
QoS setting from the default value.