A Completer Abort occurs when the completion TLP completion status is 0b100 - Completer Abort. This indicates that the completer has encountered a state in which it was unable to complete the transaction. When the slave bridge receives a completer abort response, the Slave Completer Abort (SCA) interrupt is asserted and the SLVERR response is asserted with arbitrary data on the memory mapped AXI4 bus.
Table 3-6:
Slave Bridge Response to Abnormal Conditions
|
Transfer Type
|
Abnormal Condition
|
Bridge Response
|
|
Read
|
Illegal burst type
|
SIB interrupt is asserted.
SLVERR response given with arbitrary read data.
|
|
Write
|
Illegal burst type
|
SIB interrupt is asserted.
Write data is discarded.
SLVERR response given.
|
|
Read
|
Unexpected completion
|
SUC interrupt is asserted.
Completion is discarded.
|
|
Read
|
Unsupported Request status returned
|
SUR interrupt is asserted.
SLVERR
response given with arbitrary read data.
|
|
Read
|
Completion timeout
|
SCT interrupt is asserted.
SLVERR response given with arbitrary read data.
|
|
Read
|
Poison bit in completion
|
Completion data is discarded.
SEP interrupt is asserted.
SLVERR response given with arbitrary read data.
|
|
Read
|
Completer Abort (CA) status returned
|
SCA interrupt is asserted.
SLVERR response given with arbitrary read data.
|