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p1010 pcie can't read when data length less than 4 bytes

Question asked by 旭东 营 on Sep 4, 2017
Latest reply on Oct 12, 2017 by Serguei Podiatchev

HI,I'm working on P1010 board which running the vxWorks5.5, the pcie controller was configered as RC,when writing data to the pcie device,any data length is ok,but when readubg data , if data length less than 4 bytes, pcie would be "dead",we can see that , a completion time-out  on the PCI Express link was detected, through the PCI Express error detect register.

Does P1010 board have any special requirement  on the data align?