in my project,powerpc (mpc8548) communicate with FPGA (kinect7 160t) through rapidio.
Two FPGA can communicate with each other through DIO or Msg or DoorBell ..
when FPGA send Msg to ppc, ppc can receive the Msg and FPGA receive the Response from ppc
But ppc can't receive the Response from the FPGA, when ppc send Msg to FPGA.
In the FPGA side, saw the response has sent as right format ,by capturing the signal of log_interface_SRIO_Core in debug mode;
In the PPC side, the bit 7 and bit 8 of LTLEDCSR register has trun to 1;
bit7: Packet Response Time-out : A required response has not been received within the specified timeout interval
bit8: Unsolicited Response : An unsolicited/unexpected Response packet was received
the same problem appears ,when we use NWRITE_R or NREAD operation.
Have you come across this problem?
so what can I do?