[参考译文] AM2434：使用 UDMA 将 GPMC 突发传输至 FPGA (TR 类型设置)

static void App_udmaTrpdInit(Udma_ChHandle chHandle,
                             uint8_t *trpdMem,
                             const void *destBuf,
                             const void *srcBuf,
                             uint32_t length)
{
    CSL_UdmapTR15  *pTr;
    uint32_t        cqRingNum = Udma_chGetCqRingNum(chHandle);
 
    /* Make TRPD with TR15 TR type */
    UdmaUtils_makeTrpdTr15(trpdMem, 1U, cqRingNum);
 
    /* Setup TR */
    pTr = UdmaUtils_getTrpdTr15Pointer(trpdMem, 0U);
    pTr->flags    = CSL_FMK(UDMAP_TR_FLAGS_TYPE, CSL_UDMAP_TR_FLAGS_TYPE_4D_BLOCK_MOVE_REPACKING_INDIRECTION);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_STATIC, 0U);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_EOL, CSL_UDMAP_TR_FLAGS_EOL_MATCH_SOL_EOL);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_EVENT_SIZE, CSL_UDMAP_TR_FLAGS_EVENT_SIZE_COMPLETION);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_TRIGGER0, CSL_UDMAP_TR_FLAGS_TRIGGER_NONE);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_TRIGGER0_TYPE, CSL_UDMAP_TR_FLAGS_TRIGGER_TYPE_ALL);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_TRIGGER1, CSL_UDMAP_TR_FLAGS_TRIGGER_NONE);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_TRIGGER1_TYPE, CSL_UDMAP_TR_FLAGS_TRIGGER_TYPE_ALL);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_CMD_ID, 0x25U);  /* This will come back in TR response */
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_SA_INDIRECT, 0U);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_DA_INDIRECT, 0U);
    pTr->flags   |= CSL_FMK(UDMAP_TR_FLAGS_EOP, 1U);
    pTr->icnt0    = length;
    pTr->icnt1    = 1U;
    pTr->icnt2    = 1U;
    pTr->icnt3    = 1U;
    pTr->dim1     = pTr->icnt0;
    pTr->dim2     = (pTr->icnt0 * pTr->icnt1);
    pTr->dim3     = (pTr->icnt0 * pTr->icnt1 * pTr->icnt2);
    pTr->addr     = (uint64_t) Udma_defaultVirtToPhyFxn(srcBuf, 0U, NULL);
    pTr->fmtflags = 0x00000000U;    /* Linear addressing, 1 byte per elem */
    pTr->dicnt0   = length;
    pTr->dicnt1   = 1U;
    pTr->dicnt2   = 1U;
    pTr->dicnt3   = 1U;
    pTr->ddim1    = pTr->dicnt0;
    pTr->ddim2    = (pTr->dicnt0 * pTr->dicnt1);
    pTr->ddim3    = (pTr->dicnt0 * pTr->dicnt1 * pTr->dicnt2);
    pTr->daddr    = (uint64_t) Udma_defaultVirtToPhyFxn(destBuf, 0U, NULL);
 
    /* Perform cache writeback */
    CacheP_wb(trpdMem, UDMA_TEST_TRPD_SIZE, CacheP_TYPE_ALLD);
 
    return;
}