NIX_CHAN_SDP_CH_START
#define NIX_CHAN_SDP_CHX(a) (NIX_CHAN_SDP_CH_START + (a))
hw->sdp_chan_base = NIX_CHAN_SDP_CH_START;
sdp_chan_base = pfvf->rx_chan_base - NIX_CHAN_SDP_CH_START;
rsp->chan_base = NIX_CHAN_SDP_CH_START;