How to run successful OMAP-L138 UPP capture

Hello,

I'm using OMAP-L138 and CCS-5.4 for

SW-1) bios_5_42_01_09

SW-2) edma3_lld_01_11_03_01

SW-3) pspdrivers_01_30_01

SW-4) rtfs_1_10_02_32

I created a project based on sample code on UPP and RTFS where UPP collects data from FPGA and RTFS write collect data to SATA

I have a counter in FPGA to generate to check data integrity

Below are basic procedure for the whole job

Code-1) Setup UPP similar to UPP sample code

Code-2) Loop

   2.1) SIO_reclaim()

   2.2) Sata_Write()

   2.3) SIO_issue()

Below are my UPP_SATA problems

P-1)For the very run after power-up

       Most of the time, I have the very first data are correct starting with  0, 1, ..., as expected from FPGA counter

Once in a while, data do not start from ZERO ?!?!?

P-2) For the 2nd run after power-up

     The data do not start from ZERO at all, and I found the expected data starting from ZERO appear sometime later. So the first data segment are left over from the first run

It appears to me a flushing mechanism could solve both problem above, but I failed to use the function SIO_flush()

Any idea how to deal with these problems ?

Thanks,