Bridging strongly ordered write transactions to devices in weakly ordered domains, and related apparatuses, methods, and computer-readable media

An apparatus comprising a host bridge device, the host bridge device comprising:

• a means for receiving a plurality of strongly ordered write transactions from one or more strongly ordered producer devices;
• a means for issuing the plurality of strongly ordered write transactions to one or more consumer devices within a weakly ordered domain;
• a means for detecting a first write transaction of the plurality of strongly ordered write transactions that is not accepted by a first consumer device of the one or more consumer devices;
• a means for sending a cancellation message to the respective consumer device for each of one or more write transactions issued subsequent to the first write transaction and accepted by a respective consumer device of the one or more consumer devices;
• and
• a means for replaying the first write transaction and the one or more write transactions that were issued subsequent to the first write transaction.

A method for bridging strongly ordered write transactions into weakly ordered domains, comprising:

• receiving, by a host bridge device, a plurality of strongly ordered write transactions from one or more strongly ordered producer devices;
• issuing the plurality of strongly ordered write transactions to one or more consumer devices within a weakly ordered domain;
• detecting a first write transaction of the plurality of strongly ordered write transactions that is not accepted by a first consumer device of the one or more consumer devices;
• for each of one or more write transactions issued subsequent to the first write transaction and accepted by a respective consumer device of the one or more consumer devices, sending a cancellation message to the respective consumer device;
• and
• replaying the first write transaction and the one or more write transactions that were issued subsequent to the first write transaction.

A non-transitory computer-readable medium having stored thereon computer-executable instructions to cause a processor to:

• receive a plurality of strongly ordered write transactions from one or more strongly ordered producer devices;
• issue the plurality of strongly ordered write transactions to one or more consumer devices within a weakly ordered domain;
• detect a first write transaction of the plurality of strongly ordered write transactions that is not accepted by a first consumer device of the one or more consumer devices;
• for each of one or more write transactions issued subsequent to the first write transaction and accepted by a respective consumer device of the one or more consumer devices, send a cancellation message to the respective consumer device;
• and
• replay the first write transaction and the one or more write transactions that were issued subsequent to the first write transaction.