Abstract: A method, system, and device provide for the streaming of ordered requests from one or more Senders to one or more Receivers over an un-ordered interconnect while mitigating structural deadlock conditions.

Abstract: A bridging circuit and method of operation thereof, which couples first and second electronic circuits of a data processing system. The first electronic circuit generates signals corresponding to digits of a flow control unit (flit) of a first flow control protocol and where the second electronic circuit is responsive to signals corresponding to flits of a second flow control protocol. When first flits are destined for the same target buffer, they are combined to provide a second flit consistent with the second flow control protocol and transmitting the second flit to the second electronic circuit. The second flit includes data and metadata fields copied from the first flits, a common field common to each of the first flits, a merged field containing a merger of fields from the first flits and a validity field indicating which portions of the second flit contain valid data.

Abstract: A data processing apparatus (2) comprises a first protocol domain A configured to operate under a write progress protocol and a second protocol domain B configured to operate under a snoop progress protocol. A deadlock condition is detected if a write target address for a pending write request issued from the first domain A to the second domain B is the same as a snoop target address or a pending snoop request issued from the second domain B to the first domain A. When the deadlock condition is detected, a bridge (4) between the domains may issue an early response to a selected one of the deadlocked write and snoop requests without waiting for the selected request serviced. The early response indicates to the domain that issued the selected request that the selected request has been serviced, enabling the other request to be serviced by the issuing domain.

Abstract: A data processing apparatus (2) comprises a first protocol domain A configured to operate under a write progress protocol and a second protocol domain B configured to operate under a snoop progress protocol. A deadlock condition is detected if a write target address for a pending write request issued from the first domain A to the second domain B is the same as a snoop target address or a pending snoop request issued from the second domain B to the first domain A. When the deadlock condition is detected, a bridge (4) between the domains may issue an early response to a selected one of the deadlocked write and snoop requests without waiting for the selected request serviced. The early response indicates to the domain that issued the selected request that the selected request has been serviced, enabling the other request to be serviced by the issuing domain.