pkt_control_ecb
struct pkt_control_ecb *ecb;
rctx->pctrllen = sizeof(struct pkt_control_ecb);
ecb = (struct pkt_control_ecb *)ce->pctrl;
ce->pctrl = dma_alloc_coherent(ce->dev, sizeof(struct pkt_control_ecb),
dma_free_coherent(ce->dev, sizeof(struct pkt_control_ecb), ce->pctrl,