通过TMS320C6455EVM板测试 maintenance read/write 功能

TMS320C6455EVM由两块板通过RapidIO接口互联，测试IO读写功能、DOORBELL功能正确，但maintenance read返回错误代码（“Transaction complete, non-posted response packet (type 8 and 13) contained ERROR status, or response payload length was in error”）。

通过LSU测试程序测试：仅修改包类型为0x80，偏移地址offset=0x0，长度为0x10。

srio_read(0x0, 0x900300, 0x10);

void srio_read(Uint32 src, Uint32 dst, Uint32 len)
{
    Uint8 lsu_no;
    CSL_SrioDirectIO_ConfigXfr lsu_conf = {0};

    /* Create an LSU configuration */
    lsu_conf.srcNodeAddr           = dst;             /* Local address */
    lsu_conf.dstNodeAddr.addressHi = 0;
    lsu_conf.dstNodeAddr.addressLo = src;             /* Remote address */
    lsu_conf.byteCnt               = len;
    lsu_conf.idSize                = 1;               /* 16 bit device id */
    lsu_conf.priority              = 2;               /* PKT priority is 2 */
    lsu_conf.xambs                 = 0;               /* Not an extended
                                                          address */
    lsu_conf.dstId                 = LARGE_DEV_ID;
    lsu_conf.intrReq               = 0;               /* No interrupts */
    lsu_conf.pktType               = 0x80;
                                                      /* write with no
                                                          response */
    lsu_conf.hopCount              = 0;               /* Valid for
                                                          maintainance pkt */
    lsu_conf.doorbellInfo          = 0;               /* Not a doorbell pkt */
    lsu_conf.outPortId             = 0;               /* Tx on Port 0 */

    lsu_no = SELECTED_LSU;
    CSL_srioLsuSetup (hSrio, &lsu_conf, lsu_no);

    /* Wait for the completion of transfer */
    response.index = lsu_no;
    do {
        CSL_srioGetHwStatus (hSrio, CSL_SRIO_QUERY_LSU_BSY_STAT, &response);
    } while(response.data == 1);
}