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C6678 SRIO通信 NREAD



在K1_STK_v1.1例程的基础上进行修改,实现了C6678与FPGA之间的4x,5G模式srio通信,但是存在以下异常现象:


在完成基本配置(调用函数KeyStone_SRIO_Init与SRIO_PktDM_init)后,我们连续进行多次Nread操作,
发现有时会出现第一次Nread操作异常,但后续Nread操作正常,具体打印信息如下(如连续4次执行Nread操作):
NREAD from 0x00000000 to 0x80000000, 262144 bytes, completion code = 1
NREAD from 0x00000000 to 0x80000000, 262144 bytes, completion code = 0
NREAD from 0x00000000 to 0x80000000, 262144 bytes, completion code = 0
NREAD from 0x00000000 to 0x80000000, 262144 bytes, completion code = 0

有检测DSP与FPGA两端的PLL稳定与端口链接状态,请问还有其他状态需要排查确定吗?