Error Handling

On Error:

• send error response over response interface

• frontend needs to receive and acknowledge the error respons

-> Notification / SW handling is up to the frontend (i.e. platform)

3 Options to be implemented in backend:

• Abort generic 1D transfer

• Continue generic 1D transfer

• Replay AXI transfer with response != 0 (optimally: not full 1D transfer)

On Success:

• completed response over response interface

Important:

• Even if error occurs on AXI interface, burst needs to be completed for AXI compliance.

  • It is possible only a few transactions in the burst present an error

• Certain features may be difficult to implement with proper error handling, may result in significant performance impact.